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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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Welding Torch is allways NEGATIVE
Lets start a big arguement ..... WHY ?? WHY weld negative ? Cause ya can't get the torch hotter than the work . Even in old vac tubes , plate ( aka "anode" cause its + ) gets hotter . They had to heat the cathode ! It was running too cool . S.S. , tung' negative will keep work hotter than tung' .. works better . Stick . 6011 . ! AC is the reason for the noise and splatter ! Try H'F' e-welder for $200 . Its very quiet . Novices notice ,, Stick pos ,, is easier to start . True , if ya overheat , the stick , it sends off electrons easier , but it overheats the rod , and where are you now ! Lower penetration . Never use an old 60hz , AC machine , they are difficult to weld with . Learn on a modern hi-frequency D.C. box . |
#2
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Welding Torch is allways NEGATIVE
kc7cc writes:
lots snipped Even in old vac tubes , plate ( aka "anode" cause its + ) gets hotter . They had to heat the cathode ! It was running too cool . This had nothing to do with relative temperatures of cathode and anode, nor with the cathode "running too cool". It was pretty fundamentally different from an arc, and doesn't work as an analogy. The cathode had to be heated to boil off electrons, which could then be attracted to the anode. -- As we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours; and this we should do freely and generously. (Benjamin Franklin) |
#3
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Welding Torch is allways NEGATIVE
On Wed, 16 Sep 2009 21:18:15 -0700 (PDT), kc7cc
wrote: Lets start a big arguement ..... WHY ?? WHY weld negative ? Cause ya can't get the torch hotter than the work . Even in old vac tubes , plate ( aka "anode" cause its + ) gets hotter . They had to heat the cathode ! It was running too cool . S.S. , tung' negative will keep work hotter than tung' .. works better . Stick . 6011 . ! AC is the reason for the noise and splatter ! Try H'F' e-welder for $200 . Its very quiet . Novices notice ,, Stick pos ,, is easier to start . True , if ya overheat , the stick , it sends off electrons easier , but it overheats the rod , and where are you now ! Lower penetration . Never use an old 60hz , AC machine , they are difficult to weld with . Learn on a modern hi-frequency D.C. box . Learn on an old 60 hz box, you'll be a better welder when you move up in power sources. electode positive is good on thin sheet metal. ( when stick welding) Thank You, Randy Remove 333 from email address to reply. |
#4
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Welding Torch is allways NEGATIVE
On Wed, 16 Sep 2009 21:18:15 -0700 (PDT), kc7cc wrote:
Lets start a big arguement ..... Novices notice ,, Stick pos ,, is easier to start . True , if ya overheat , the stick , it sends off electrons easier Just think on that statement for a moment... Mark Rand RTFM |
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