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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Be gentle with critique of welding please.
Here are some welds I just did in my garage. I have not welded in
almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. |
#2
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Be gentle with critique of welding please.
stryped wrote:
Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. 7018 should be kept dry. A cycle through your oven, on a cleaning cycle, is not too hot, for driving off the moisture from the flux. Clean the areas of paint and rust before welding, Get a decent knot wheel on a angle grinder for cleaning, and don't look too hard at the welds until there is a coat od Tremclad over them, and they will look really good! :-0 Nobody ever got better at welding by not doing it! Practice is good! Cheers Trevor Jones |
#3
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Be gentle with critique of welding please.
On Apr 19, 9:32*pm, Trevor Jones wrote:
stryped wrote: Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible:http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. * 7018 should be kept dry. A cycle through your oven, on a cleaning cycle, is not too hot, for driving off the moisture from the flux. * Clean the areas of paint and rust before welding, Get a decent knot wheel on a angle grinder for cleaning, and don't look too hard at the welds until there is a coat od Tremclad over them, and they will look really good! :-0 * Nobody ever got better at welding by not doing it! Practice is good! * Cheers * *Trevor Jones it is ok to put them in the oven I cook in? At what temp? |
#4
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Be gentle with critique of welding please.
On Sat, 19 Apr 2008 19:44:01 -0700 (PDT), stryped
wrote: On Apr 19, 9:32*pm, Trevor Jones wrote: stryped wrote: Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible:http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. * 7018 should be kept dry. A cycle through your oven, on a cleaning cycle, is not too hot, for driving off the moisture from the flux. * Clean the areas of paint and rust before welding, Get a decent knot wheel on a angle grinder for cleaning, and don't look too hard at the welds until there is a coat od Tremclad over them, and they will look really good! :-0 * Nobody ever got better at welding by not doing it! Practice is good! * Cheers * *Trevor Jones it is ok to put them in the oven I cook in? At what temp? 350F...though it works fine even if its been damp, unless you are welding high strenth stuff to code and have to worry about hydrogen imbrittlement. Ive got probably 2 lbs of 7018 in a rod holder made out of a plate and a bit of square tubing, like pencils in a cup, sitting on my welding table at any given moment, outside, only protected by a roof 8' up, the welding area has open sides, winter and summer. I dont worry about welding stuff with it, unless its gonna be under HIGH stress over its lifetime. Ive got about 500lbs of 70xx rod on hand and use it for nearly everything that Im not Tigging or Migging. And I often use rod instead of wire just to keep my hand in. Shrug Gunner "[L]iberals are afraid to state what they truly believe in, for to do so would result in even less votes than they currently receive. Their methodology is to lie about their real agenda in the hopes of regaining power, at which point they will do whatever they damn well please. The problem is they have concealed and obfuscated for so long that, as a group, they themselves are no longer sure of their goals. They are a collection of wild-eyed splinter groups, all holding a grab-bag of dreams and wishes. Some want a Socialist, secular-humanist state, others the repeal of the Second Amendment. Some want same sex/different species marriage, others want voting rights for trees, fish, coal and bugs. Some want cradle to grave care and complete subservience to the government nanny state, others want a culture that walks in lockstep and speaks only with intonations of political correctness. I view the American liberals in much the same way I view the competing factions of Islamic fundamentalists. The latter hate each other to the core, and only join forces to attack the US or Israel. The former hate themselves to the core, and only join forces to attack George Bush and conservatives." --Ron Marr |
#5
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Be gentle with critique of welding please.
Baking your 7018 at about 300 to 350 in the oven for about an hour might help noticably. My rod oven calls out a bit higher temp. 500 - 600 1 hour. here's another manufactures link. http://www.rodovens.com/welding_arti...rage_chart.htm P.S. I used to use the SO's oven. She came home early once when I was drying out some rod that had a bit of grease on them, I guess. I NEVER TRIED THAT AGAIN. Karl |
#6
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Be gentle with critique of welding please.
On Apr 20, 3:44*am, Gunner Asch wrote:
On Sat, 19 Apr 2008 18:57:59 -0700 (PDT), stryped wrote: Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible:http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. Your flat 7018 weld is pretty damned good. You sorta got carried away at the ends of the weld, but thats what grinders are for. Your 6013 is not bad in places. You were having a hard time keeping the proper distance going around the shaft and varying the arc length on both the 6013 and 7018. *The crater on the 7018 was the result of pulling away sharply. Probably where you ended the weld. Which most folks, including myself have a hard time doing on round stuff. Its obvious you know how to weld, you just need some practice keeping consistant arc length on pipe. As do I..damnit. *Which is why I cobbled up a positioner..I cheat. Like tig welding, finding a comfortable and steady way to rest your arm and hand, and make a smooth transition around pipe is the hard part with stick welding, as you not only have to move the rod, but slowly plunge in as it melts. With MIG..its "easier" unquote, as you dont have to worry about arc length and moving in as you melt the wire. Gunner, dauber, not a welder, nor plays one on TV "[L]iberals are afraid to state what they truly believe in, for to do so would result in even less votes than they currently receive. Their methodology is to lie about their real agenda in the hopes of regaining power, at which point they will do whatever they damn well please. The problem is they have concealed and obfuscated for so long that, as a group, they themselves are no longer sure of their goals. They are a collection of wild-eyed splinter groups, all holding a grab-bag of dreams and wishes. Some want a Socialist, secular-humanist state, others the repeal of the Second Amendment. Some want same sex/different species marriage, others want voting rights for trees, fish, coal and bugs. Some want cradle to grave care and complete subservience to the government nanny state, others want a culture that walks in lockstep and speaks only with intonations of political correctness. I view the American liberals in much the same way I view the competing factions of Islamic fundamentalists. The latter hate each other to the core, and only join forces to attack the US or Israel. The former hate themselves to the core, and only join forces to attack George Bush and conservatives." --Ron Marr Thanks for the input! Is it ok to weld, scrape the slag off or grind it off, then weld on top of it again in the case a pinhole or somethign is seen? Some of that metal I am getting is pre painted. SHould I take the time to grind down and use 7018 or just use somethign like 6011 or 6013? If my wife goes somewhere I may stick those in the oven. It may make them weld better. |
#7
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Be gentle with critique of welding please.
Gunner Asch wrote:
On Sat, 19 Apr 2008 19:44:01 -0700 (PDT), stryped wrote: On Apr 19, 9:32 pm, Trevor Jones wrote: stryped wrote: Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible:http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. 7018 should be kept dry. A cycle through your oven, on a cleaning cycle, is not too hot, for driving off the moisture from the flux. Clean the areas of paint and rust before welding, Get a decent knot wheel on a angle grinder for cleaning, and don't look too hard at the welds until there is a coat od Tremclad over them, and they will look really good! :-0 Nobody ever got better at welding by not doing it! Practice is good! Cheers Trevor Jones it is ok to put them in the oven I cook in? At what temp? 350F...though it works fine even if its been damp, unless you are welding high strenth stuff to code and have to worry about hydrogen imbrittlement. Ive got probably 2 lbs of 7018 in a rod holder made out of a plate and a bit of square tubing, like pencils in a cup, sitting on my welding table at any given moment, outside, only protected by a roof 8' up, the welding area has open sides, winter and summer. I dont worry about welding stuff with it, unless its gonna be under HIGH stress over its lifetime. Ive got about 500lbs of 70xx rod on hand and use it for nearly everything that Im not Tigging or Migging. And I often use rod instead of wire just to keep my hand in. Shrug Gunner Yeah. Last time I was reading welding code stuff, they were limiting 7018 to about 4 hours exposure to air, without having it in a rod oven. For average guy kind of use, it does not make a lot of difference, for someone getting their welds inspected, it does. I found 7018 to be a bit nicer to use, when the flux was dry-dry. If it got really humid, I found that the flux would shatter and the rod would burn unevenly. The flux stuff is sorta like plaster or concrete. The water is bound into it, and takes temperatures higher than the boiling point of water to drive off. You will get better payback from the time spent cleaning the rust and paint away from your working area, at this stage of the game. Dunno about the 6013, never used it. I have used a LOT of 6011, and it works better when NOT kept in a rod oven. The cellulosic flux needs the little bit of moisture to work its magic, as I understand it. Dip a 6011 rod in water just before use, and it'll cut a nice deep groove, too. Cheers Trevor Jones |
#8
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Be gentle with critique of welding please.
stryped wrote:
Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. There's this device called an angle grinder that makes my welds invisible. Seriously, my skills get better by the end of a project, but then start to wane due to no practice. Grinder skills seem to stay with me longer. -- Gary Brady Austin, TX www.powdercoatoven.4t.com |
#9
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Be gentle with critique of welding please.
"stryped" wrote in message ... Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. You need a few more years practice before welding on trailers. Steve |
#10
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Be gentle with critique of welding please.
In article ,
"SteveB" wrote: "stryped" wrote in message ... Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. You need a few more years practice before welding on trailers. Steve (It'd really be best if Ernie would jump into this thread.) Have to agree, sorry. Those welds look too uneven, porous, undercut, and contaminated to trust with the stresses a trailer will experience, not to mention they look like your amperage was too low. The angle iron weld is the best of the three, but looks too cold and penetration might not be adequate. I'm a long way from an expert, so apply the usual measure of salt, but it might benefit you to develop a more even travel speed and weave. Also, it's a lot easier to get a stronger weld if the parent metal is clean. Then you get weld metal in the joint without generating gases that cause porosity and poor penetration. Especially, I look very hard at my joint setups and then the puddle when using flux-core or MIG. It's really easy to get a pretty bead that doesn't penetrate both sides of the joint. I've seen it from some of the biggest, most well-known, and respected wheelchair manufacturers. (and have charged accordingly when I had to repair some of their brand-spankin' new equipment. Stick seems deceptively difficult. MIG is deceptively easy, especially on fillets. I don't think you need years more practice, but doing plenty of practice on scrap before you even try the first weld on a trailer frame can't help but improve your welds. You've got too much to lose if your welds let go. So practice lots and weld once. |
#11
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Be gentle with critique of welding please.
On Sun, 20 Apr 2008 11:13:11 -0600, SteveB wrote:
"stryped" wrote in message ... Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. You need a few more years practice before welding on trailers. Or some welding courses at local trade schools. In any case, break a bunch of your welds and let us know the outcome. Some of the welds in the pictures look blobby and erratic, like they won't take much force to break. -jiw |
#12
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Be gentle with critique of welding please.
On Sun, 20 Apr 2008 06:31:22 -0500, "Karl Townsend"
wrote: Baking your 7018 at about 300 to 350 in the oven for about an hour might help noticably. My rod oven calls out a bit higher temp. 500 - 600 1 hour. here's another manufactures link. http://www.rodovens.com/welding_arti...rage_chart.htm P.S. I used to use the SO's oven. She came home early once when I was drying out some rod that had a bit of grease on them, I guess. I NEVER TRIED THAT AGAIN. Karl Good data, Karl. I was recalling that a rod oven runs at 325 or so, but that's storage rather than restoration. |
#13
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Be gentle with critique of welding please.
On Apr 20, 2:24*pm, James Waldby wrote:
On Sun, 20 Apr 2008 11:13:11 -0600, SteveB wrote: "stryped" wrote in message ... Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. You need a few more years practice before welding on trailers. Or some welding courses at local trade schools. In any case, break a bunch of your welds and let us know the outcome. *Some of the welds in the pictures look blobby and erratic, like they won't take much force to break. -jiw I beat the heck out of the angle iron and could not get it to break. By the way, it is ok to weld, grind down, then weld on top of the origional weld? |
#14
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Be gentle with critique of welding please.
On Sun, 20 Apr 2008 18:07:33 -0700, stryped wrote:
On Apr 20, 2:24Â*pm, James Waldby wrote: On Sun, 20 Apr 2008 11:13:11 -0600, SteveB wrote: "stryped" wrote ... Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ [snip] Or some welding courses at local trade schools. In any case, break a bunch of your welds and let us know the outcome. Â*Some of the welds in the pictures look blobby and erratic, like they won't take much force to break. I beat the heck out of the angle iron and could not get it to break. What about the welded pipes? By the way, it is ok to weld, grind down, then weld on top of the original weld? You should avoid any slag inclusion, so may need to run a knotted wire brush as well, like others have suggested, before welding another layer, which welded joints in heavy metal probably will require. An air driven needle scaler is another way to clean up mild steel before the next welding pass. -jiw |
#15
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Be gentle with critique of welding please.
On Sun, 20 Apr 2008 18:07:33 -0700 (PDT), stryped
wrote: On Apr 20, 2:24*pm, James Waldby wrote: On Sun, 20 Apr 2008 11:13:11 -0600, SteveB wrote: "stryped" wrote in message ... Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. You need a few more years practice before welding on trailers. Or some welding courses at local trade schools. In any case, break a bunch of your welds and let us know the outcome. *Some of the welds in the pictures look blobby and erratic, like they won't take much force to break. -jiw I beat the heck out of the angle iron and could not get it to break. By the way, it is ok to weld, grind down, then weld on top of the origional weld? It is, but that won't fix welds that bridge the gap rather than achieving face-to-face fusion clear thru the joined members. It is much better to get a good root pass, then grind away slag and inclusions and fill in behind the root pass. It is better yet to get it right the first time in thin metal like you are using. Practice on scrap similar to your job to get your techique and machine set so you and it make good welds, then start the job. If you don't have scrap, make some. I'm not kidding! It'll save time and materials in the long run, and result in a better job. I've been welding for over 30 years as an amateur. I still do a trial run with stick or MIG before going for the money on a given job. Might be 2 minutes or 30, one try or a dozen, whatever it takes to get it right. 6013, 7014 and 7018 are all suitable. An accomplished welder could make a good job of it with any of those. It's far more important to discover which of those works consistently well for you under what conditions. The first two digits (60xx or 70xx) infer tensile strength in KSI but that assumes ideal welds. Both are probably higher than the metal you're joining when making a trailer. A good weld with 6013 is considerably stronger than a poor weld with 7018. A realistic stress limit for angle iron etc used in trailer building is more like 20KSI. Gae thee forth and weld. Try things, see what works, nevermind "expert guidance" from an internet newsgroup. You might amaze yourself with your rate of progress. We don't have to "ride your welds" but you do. |
#16
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Be gentle with critique of welding please.
On Apr 21, 12:32*am, Don Foreman
wrote: On Sun, 20 Apr 2008 18:07:33 -0700 (PDT), stryped wrote: On Apr 20, 2:24*pm, James Waldby wrote: On Sun, 20 Apr 2008 11:13:11 -0600, SteveB wrote: "stryped" wrote in message .... Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. You need a few more years practice before welding on trailers. Or some welding courses at local trade schools. In any case, break a bunch of your welds and let us know the outcome. *Some of the welds in the pictures look blobby and erratic, like they won't take much force to break. -jiw I beat the heck out of the angle iron and could not get it to break. By the way, it is ok toweld, grind down, thenweldon top of the origionalweld? It is, but that won't fix welds that bridge the gap rather than achieving face-to-face fusion clear thru the joined members. It is much better to get a good root pass, then grind away slag and inclusions and fill in behind the root pass. *It is better yet to get it right the first time in thin metal like you are using. Practice on scrap similar to your job to get your techique and machine set so you and it *make good welds, then start the job. If you don't have scrap, make some. *I'm not kidding! * *It'll save time and materials in the long run, and result in a better job. I've been welding for over 30 years as an amateur. *I still do a trial run with stick or MIG before going for the money on a given job. Might be 2 minutes or 30, *one try or a dozen, whatever it takes to get it right. * * 6013, 7014 and 7018 are all suitable. * An accomplished welder could make a good job of it with any of those. * It's far more important to discover which of those works consistently well for you under what conditions. *The first two digits (60xx or 70xx) *infer tensile strength in KSI but that assumes ideal welds. *Both are probably higher than the metal you're joining when making a trailer. * * *A goodweldwith 6013 is considerably stronger *than a poorweldwith 7018. *A realistic stress limit for angle iron etc used in trailer building is more like 20KSI. * Gae thee forth andweld. Try things, see what works, nevermind "expert guidance" from an internet newsgroup. *You might *amaze yourself with your rate of progress. *We don't have to "ride your welds" but you do.- Hide quoted text - - Show quoted text - Thanks. I am going to take a jack and try to break that weld on the angle tonight. The pipe I was really playing with. I know the welds are not great. I actually had to stop because they caught fire! (There was grease on the inside of it). |
#17
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Be gentle with critique of welding please.
On Apr 21, 12:32*am, Don Foreman
wrote: On Sun, 20 Apr 2008 18:07:33 -0700 (PDT), stryped wrote: On Apr 20, 2:24*pm, James Waldby wrote: On Sun, 20 Apr 2008 11:13:11 -0600, SteveB wrote: "stryped" wrote in message .... Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. You need a few more years practice before welding on trailers. Or some welding courses at local trade schools. In any case, break a bunch of your welds and let us know the outcome. *Some of the welds in the pictures look blobby and erratic, like they won't take much force to break. -jiw I beat the heck out of the angle iron and could not get it to break. By the way, it is ok to weld, grind down, then weld on top of the origional weld? It is, but that won't fix welds that bridge the gap rather than achieving face-to-face fusion clear thru the joined members. It is much better to get a good root pass, then grind away slag and inclusions and fill in behind the root pass. *It is better yet to get it right the first time in thin metal like you are using. Practice on scrap similar to your job to get your techique and machine set so you and it *make good welds, then start the job. If you don't have scrap, make some. *I'm not kidding! * *It'll save time and materials in the long run, and result in a better job. I've been welding for over 30 years as an amateur. *I still do a trial run with stick or MIG before going for the money on a given job. Might be 2 minutes or 30, *one try or a dozen, whatever it takes to get it right. * * 6013, 7014 and 7018 are all suitable. * An accomplished welder could make a good job of it with any of those. * It's far more important to discover which of those works consistently well for you under what conditions. *The first two digits (60xx or 70xx) *infer tensile strength in KSI but that assumes ideal welds. *Both are probably higher than the metal you're joining when making a trailer. * * *A good weld with 6013 is considerably stronger *than a poor weld with 7018. *A realistic stress limit for angle iron etc used in trailer building is more like 20KSI. * Gae thee forth and weld. Try things, see what works, nevermind "expert guidance" from an internet newsgroup. *You might *amaze yourself with your rate of progress. *We don't have to "ride your welds" but you do.- Hide quoted text - - Show quoted text - What about 6011 rods? |
#18
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Be gentle with critique of welding please.
On Mon, 21 Apr 2008 10:25:32 -0700 (PDT), stryped
wrote: On Apr 21, 12:32*am, Don Foreman wrote: On Sun, 20 Apr 2008 18:07:33 -0700 (PDT), stryped wrote: On Apr 20, 2:24*pm, James Waldby wrote: On Sun, 20 Apr 2008 11:13:11 -0600, SteveB wrote: "stryped" wrote in message ... Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. You need a few more years practice before welding on trailers. Or some welding courses at local trade schools. In any case, break a bunch of your welds and let us know the outcome. *Some of the welds in the pictures look blobby and erratic, like they won't take much force to break. -jiw I beat the heck out of the angle iron and could not get it to break. By the way, it is ok to weld, grind down, then weld on top of the origional weld? It is, but that won't fix welds that bridge the gap rather than achieving face-to-face fusion clear thru the joined members. It is much better to get a good root pass, then grind away slag and inclusions and fill in behind the root pass. *It is better yet to get it right the first time in thin metal like you are using. Practice on scrap similar to your job to get your techique and machine set so you and it *make good welds, then start the job. If you don't have scrap, make some. *I'm not kidding! * *It'll save time and materials in the long run, and result in a better job. I've been welding for over 30 years as an amateur. *I still do a trial run with stick or MIG before going for the money on a given job. Might be 2 minutes or 30, *one try or a dozen, whatever it takes to get it right. * * 6013, 7014 and 7018 are all suitable. * An accomplished welder could make a good job of it with any of those. * It's far more important to discover which of those works consistently well for you under what conditions. *The first two digits (60xx or 70xx) *infer tensile strength in KSI but that assumes ideal welds. *Both are probably higher than the metal you're joining when making a trailer. * * *A good weld with 6013 is considerably stronger *than a poor weld with 7018. *A realistic stress limit for angle iron etc used in trailer building is more like 20KSI. * Gae thee forth and weld. Try things, see what works, nevermind "expert guidance" from an internet newsgroup. *You might *amaze yourself with your rate of progress. *We don't have to "ride your welds" but you do.- Hide quoted text - - Show quoted text - What about 6011 rods? I never liked it for working on thin stuff, but some folks do. |
#19
Posted to rec.crafts.metalworking
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Be gentle with critique of welding please.
On Apr 21, 2:03*pm, Don Foreman wrote:
On Mon, 21 Apr 2008 10:25:32 -0700 (PDT), stryped wrote: On Apr 21, 12:32*am, Don Foreman wrote: On Sun, 20 Apr 2008 18:07:33 -0700 (PDT), stryped wrote: On Apr 20, 2:24*pm, James Waldby wrote: On Sun, 20 Apr 2008 11:13:11 -0600, SteveB wrote: "stryped" wrote in message ... Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. You need a few more years practice before welding on trailers. Or some welding courses at local trade schools. In any case, break a bunch of your welds and let us know the outcome. *Some of the welds in the pictures look blobby and erratic, like they won't take much force to break. -jiw I beat the heck out of the angle iron and could not get it to break. By the way, it is ok to weld, grind down, then weld on top of the origional weld? It is, but that won't fix welds that bridge the gap rather than achieving face-to-face fusion clear thru the joined members. It is much better to get a good root pass, then grind away slag and inclusions and fill in behind the root pass. *It is better yet to get it right the first time in thin metal like you are using. Practice on scrap similar to your job to get your techique and machine set so you and it *make good welds, then start the job. If you don't have scrap, make some. *I'm not kidding! * *It'll save time and materials in the long run, and result in a better job. I've been welding for over 30 years as an amateur. *I still do a trial run with stick or MIG before going for the money on a given job. Might be 2 minutes or 30, *one try or a dozen, whatever it takes to get it right. * * 6013, 7014 and 7018 are all suitable. * An accomplished welder could make a good job of it with any of those. * It's far more important to discover which of those works consistently well for you under what conditions. *The first two digits (60xx or 70xx) *infer tensile strength in KSI but that assumes ideal welds. *Both are probably higher than the metal you're joining when making a trailer. * * *A good weld with 6013 is considerably stronger *than a poor weld with 7018. *A realistic stress limit for angle iron etc used in trailer building is more like 20KSI. * Gae thee forth and weld. Try things, see what works, nevermind "expert guidance" from an internet newsgroup. *You might *amaze yourself with your rate of progress. *We don't have to "ride your welds" but you do..- Hide quoted text - - Show quoted text - What about 6011 rods? I never liked it for working on thin stuff, but some folks do. *- Hide quoted text - - Show quoted text - What do you consider "thin"? Less than 1/4? |
#20
Posted to rec.crafts.metalworking
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Be gentle with critique of welding please.
On Mon, 21 Apr 2008 12:38:37 -0700 (PDT), stryped
wrote: On Apr 21, 2:03*pm, Don Foreman wrote: On Mon, 21 Apr 2008 10:25:32 -0700 (PDT), stryped wrote: On Apr 21, 12:32*am, Don Foreman wrote: On Sun, 20 Apr 2008 18:07:33 -0700 (PDT), stryped wrote: On Apr 20, 2:24*pm, James Waldby wrote: On Sun, 20 Apr 2008 11:13:11 -0600, SteveB wrote: "stryped" wrote in message ... Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. You need a few more years practice before welding on trailers. Or some welding courses at local trade schools. In any case, break a bunch of your welds and let us know the outcome. *Some of the welds in the pictures look blobby and erratic, like they won't take much force to break. -jiw I beat the heck out of the angle iron and could not get it to break. By the way, it is ok to weld, grind down, then weld on top of the origional weld? It is, but that won't fix welds that bridge the gap rather than achieving face-to-face fusion clear thru the joined members. It is much better to get a good root pass, then grind away slag and inclusions and fill in behind the root pass. *It is better yet to get it right the first time in thin metal like you are using. Practice on scrap similar to your job to get your techique and machine set so you and it *make good welds, then start the job. If you don't have scrap, make some. *I'm not kidding! * *It'll save time and materials in the long run, and result in a better job. I've been welding for over 30 years as an amateur. *I still do a trial run with stick or MIG before going for the money on a given job. Might be 2 minutes or 30, *one try or a dozen, whatever it takes to get it right. * * 6013, 7014 and 7018 are all suitable. * An accomplished welder could make a good job of it with any of those. * It's far more important to discover which of those works consistently well for you under what conditions. *The first two digits (60xx or 70xx) *infer tensile strength in KSI but that assumes ideal welds. *Both are probably higher than the metal you're joining when making a trailer. * * *A good weld with 6013 is considerably stronger *than a poor weld with 7018. *A realistic stress limit for angle iron etc used in trailer building is more like 20KSI. * Gae thee forth and weld. Try things, see what works, nevermind "expert guidance" from an internet newsgroup. *You might *amaze yourself with your rate of progress. *We don't have to "ride your welds" but you do.- Hide quoted text - - Show quoted text - What about 6011 rods? I never liked it for working on thin stuff, but some folks do. *- Hide quoted text - - Show quoted text - What do you consider "thin"? Less than 1/4? "Thin" is a variable with the size of the rod being the deciding factor. Ive got some 6013, which we all know is for Thin Stuff..only proble is that this rod is about 3/8". Takes about 200- 300 amps to run a decent bead. Ive also got some 1/16 6011. Takes about 35 amps to run a decent bead at most. Think 3/8 plate is thick for the 1/16th rod and a smidge too thin for the 3/8 rod? You would be right...G Ive blown holes in 1/2" plate farting around with the big rod, and did it in a heart beat. Im not sure what the ratio of rod diameter to material thickness in single pass welding..or how to define "thin".... I did weld a razor blade to the top of a piece of railroad track with 1/8th 6011 once as an exercise, but thats like a "bar bet" trick. Perhaps someone has a good formula? Gunner "[L]iberals are afraid to state what they truly believe in, for to do so would result in even less votes than they currently receive. Their methodology is to lie about their real agenda in the hopes of regaining power, at which point they will do whatever they damn well please. The problem is they have concealed and obfuscated for so long that, as a group, they themselves are no longer sure of their goals. They are a collection of wild-eyed splinter groups, all holding a grab-bag of dreams and wishes. Some want a Socialist, secular-humanist state, others the repeal of the Second Amendment. Some want same sex/different species marriage, others want voting rights for trees, fish, coal and bugs. Some want cradle to grave care and complete subservience to the government nanny state, others want a culture that walks in lockstep and speaks only with intonations of political correctness. I view the American liberals in much the same way I view the competing factions of Islamic fundamentalists. The latter hate each other to the core, and only join forces to attack the US or Israel. The former hate themselves to the core, and only join forces to attack George Bush and conservatives." --Ron Marr |
#21
Posted to rec.crafts.metalworking
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Be gentle with critique of welding please.
On Mon, 21 Apr 2008 12:38:37 -0700 (PDT), stryped
wrote: What about 6011 rods? I never liked it for working on thin stuff, but some folks do. *- Hide quoted text - - Show quoted text - What do you consider "thin"? Less than 1/4? I'd say 1/8" and less, though I used 6013, 7014 and 7018 on everything up thru 1/4". I always had clean metal free of rust, paint and crud, wasn't repairing road or agri machinery. I use past tense because I've not done any stick welding since I got a Millermatic 210. I think it's easier to make good welds with stick, but I don't like all the smoke, slag and spatter. MIG works great if (and only if) everything is set just right. If/when I need to do anything thicker than 3/8", I'll use stick. |
#22
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Be gentle with critique of welding please.
Too low a temp. Baking out wet 7018 calls for 650F to 750F for 1 hour
http://content.lincolnelectric.com/p...ature/c210.pdf page 46 Don Foreman wrote: On Sat, 19 Apr 2008 18:57:59 -0700 (PDT), stryped wrote: Here are some welds I just did in my garage. I have not welded in almost a year and I was trying to basically lay a bead. I know they are probably pretty horrible: http://s173.photobucket.com/albums/w75/stryped_2007/ I had a hard time with 7018. I have had all my rods in a closet in the house for several years. Think they have accumulated moisture? One of the pictures is with 6013. It was a lot easier I think. Just wondered what you thought. Baking your 7018 at about 300 to 350 in the oven for about an hour might help noticably. When I haven't welded for several months, I also do a few practice welds on scrap before staring a job that matters. I don't think one ever forgets how to weld once one has learned, because once one has learned then he knows what to do if things aren't runnin' quite right. If I haven't welded for a while, I often don't get things right first go but it only takes a few minutes to "get it back". I'll be doing some o' that tomorrow, in fact. I have practice bits ready to go to the scrap bin after first attempts. I figure 10 minutes will have me cookin' again. I'll be MIG-welding conduit (EMT) to make something. I sure discovered that 3/4" conduit isn't as cheap as it used to be (holy buckets!) but I suppose nothing is. |
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