Home |
Search |
Today's Posts |
|
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. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
Hi All,
I'm building an aluminum hinged cover for a dry well. The hinge barrels are 1" o.d. aluminim and I had originally planned on stainless hinge pins. Any reason not to use aluminum hinge pins (much cheaper)? Thanks, Nok |
#2
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
"Nok" fired this volley in
: Hi All, I'm building an aluminum hinged cover for a dry well. The hinge barrels are 1" o.d. aluminim and I had originally planned on stainless hinge pins. Any reason not to use aluminum hinge pins (much cheaper)? Thanks, Nok There are a few: First, aluminum on aluminum tends to gall. If nothing else, this will make the hinge "creaky" and hard to work. Second, unless you specify exactly the same alloy from the same source for the hinge tubes and the pins, you'll get dissimilar metals corrosion in the joints. That tends not to happen with stainless-on-aluminum (although they are dissimilar metals, also). Third, mill-finish aluminum tends to easily corrode upon exposure to the elements. SS hinge pins will at least keep the running surfaces "polished" instead of pitting (together) and becoming hard to move. In any case, keep them protected from the elements, well-lubricated, and moved often. LLoyd |
#3
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
On Oct 4, 8:32*pm, "Nok" wrote:
Hi All, I'm building an aluminum hinged cover for a dry well. *The hinge barrels are 1" o.d. aluminim and I had originally planned on stainless hinge pins. *Any reason not to use aluminum hinge pins (much cheaper)? Thanks, Nok It sounds as if the hinge pins will not have much stress. How about using some plastic pipe for hinge pins? Maybe CVPC. It will not rust and will not encourage the aluminum to rust. It is very cheap. Dan |
#4
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
On 10/4/2011 7:32 PM, Nok wrote:
Hi All, I'm building an aluminum hinged cover for a dry well. The hinge barrels are 1" o.d. aluminim and I had originally planned on stainless hinge pins. Any reason not to use aluminum hinge pins (much cheaper)? Thanks, Nok I would be another who agrees that you will get better end results using a different metal for the pins. Keep in mind that you don't need to use solid stainless rod if the strength is not necessary. Just some stainless 1/16" thick wall tube will work also, since the stainless isn't going to wear through mechanically. If you cannot (or don't) want to precisely size both the hole and the pin OD, then just get some 1" OD stainless tubing of ~1/16"-1/8th thickness and slice it lengthwise to make a giant 'roll pin' (smooth off all the burrs of course). With a lengthwise cut, the tube will go into the hole even if the hole is slightly undersize or uneven. ---------- I'm building a project that has a bunch of cro-mo tube pivots for aluminum parts, right now. I tried using aluminum tube first, but it would quickly get "sticky" despite being oiled & coated with powdered teflon during assembly. The cro-mo pivots (lubed the same way) work perfectly. |
#5
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
Alum much softer metal, probably won't last long.
-- Christopher A. Young Learn more about Jesus www.lds.org .. "Nok" wrote in message ... Hi All, I'm building an aluminum hinged cover for a dry well. The hinge barrels are 1" o.d. aluminim and I had originally planned on stainless hinge pins. Any reason not to use aluminum hinge pins (much cheaper)? Thanks, Nok |
#6
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
" wrote: On Oct 4, 8:32 pm, "Nok" wrote: Hi All, I'm building an aluminum hinged cover for a dry well. The hinge barrels are 1" o.d. aluminim and I had originally planned on stainless hinge pins. Any reason not to use aluminum hinge pins (much cheaper)? Thanks, Nok It sounds as if the hinge pins will not have much stress. How about using some plastic pipe for hinge pins? Maybe CVPC. It will not rust and will not encourage the aluminum to rust. It is very cheap. Copper or stainless 1" OD tubing would be stronger than plastic. A foot of tubing doesn't cost very much. -jim Dan |
#7
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
If the hinge barrels are 1 inch outside diameter, and you
buy some 1 inch outside diameter tubing. How do you interact the two? -- Christopher A. Young Learn more about Jesus www.lds.org .. "jim" "sjedgingN0Sp"@m@mwt,net wrote in message .. . " wrote: On Oct 4, 8:32 pm, "Nok" wrote: Hi All, I'm building an aluminum hinged cover for a dry well. The hinge barrels are 1" o.d. aluminim and I had originally planned on stainless hinge pins. Any reason not to use aluminum hinge pins (much cheaper)? Thanks, Nok It sounds as if the hinge pins will not have much stress. How about using some plastic pipe for hinge pins? Maybe CVPC. It will not rust and will not encourage the aluminum to rust. It is very cheap. Copper or stainless 1" OD tubing would be stronger than plastic. A foot of tubing doesn't cost very much. -jim Dan |
#8
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
On Oct 5, 8:33*am, jim "sjedgingN0Sp"@m@mwt,net wrote:
Copper or stainless 1" OD tubing would be stronger than plastic. A foot of tubing doesn't cost very much. -jim What do you calculate the max load to be? The definition of an engineer that I like is someone who builds things that any damn fool can build, but does it for less money. Dan |
#9
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
On 05/10/2011 03:06, DougC wrote:
On 10/4/2011 7:32 PM, Nok wrote: Hi All, I'm building an aluminum hinged cover for a dry well. The hinge barrels are 1" o.d. aluminim and I had originally planned on stainless hinge pins. Any reason not to use aluminum hinge pins (much cheaper)? Thanks, Nok I would be another who agrees that you will get better end results using a different metal for the pins. Keep in mind that you don't need to use solid stainless rod if the strength is not necessary. Just some stainless 1/16" thick wall tube will work also, since the stainless isn't going to wear through mechanically. If you cannot (or don't) want to precisely size both the hole and the pin OD, then just get some 1" OD stainless tubing of ~1/16"-1/8th thickness and slice it lengthwise to make a giant 'roll pin' (smooth off all the burrs of course). With a lengthwise cut, the tube will go into the hole even if the hole is slightly undersize or uneven. Yup. Or brass? |
#10
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
Stormin Mormon wrote:
If the hinge barrels are 1 inch outside diameter, and you buy some 1 inch outside diameter tubing. How do you interact the two? You're right. I misread it as ID. -- Christopher A. Young Learn more about Jesus www.lds.org . "jim" "sjedgingN0Sp"@m@mwt,net wrote in message .. . " wrote: On Oct 4, 8:32 pm, "Nok" wrote: Hi All, I'm building an aluminum hinged cover for a dry well. The hinge barrels are 1" o.d. aluminim and I had originally planned on stainless hinge pins. Any reason not to use aluminum hinge pins (much cheaper)? Thanks, Nok It sounds as if the hinge pins will not have much stress. How about using some plastic pipe for hinge pins? Maybe CVPC. It will not rust and will not encourage the aluminum to rust. It is very cheap. Copper or stainless 1" OD tubing would be stronger than plastic. A foot of tubing doesn't cost very much. -jim Dan |
#11
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
On Tue, 04 Oct 2011 20:07:53 -0500, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote: "Nok" fired this volley in : Hi All, I'm building an aluminum hinged cover for a dry well. The hinge barrels are 1" o.d. aluminim and I had originally planned on stainless hinge pins. Any reason not to use aluminum hinge pins (much cheaper)? Thanks, Nok There are a few: First, aluminum on aluminum tends to gall. If nothing else, this will make the hinge "creaky" and hard to work. Second, unless you specify exactly the same alloy from the same source for the hinge tubes and the pins, you'll get dissimilar metals corrosion in the joints. That tends not to happen with stainless-on-aluminum (although they are dissimilar metals, also). Third, mill-finish aluminum tends to easily corrode upon exposure to the elements. SS hinge pins will at least keep the running surfaces "polished" instead of pitting (together) and becoming hard to move. In any case, keep them protected from the elements, well-lubricated, and moved often. LLoyd What Lloyd said. Here is a useful table of some typical coefficients of friction: http://www.engineershandbook.com/Tab...efficients.htm Aluminum on aluminum is quite high. -- Best -- Terry |
#12
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
Dan, I ended up with a hybrid of your idea. I bought some PEX and turned it
down on the lathe a few thou. Man it machines easy! Then I turned some aluminum bar as a "core" for the PEX. No contact between the aluminum and the PEX is going to be a very good bearing surface I believe. Thanks for the idea! Nok wrote in message ... On Oct 4, 8:32 pm, "Nok" wrote: Hi All, I'm building an aluminum hinged cover for a dry well. The hinge barrels are 1" o.d. aluminim and I had originally planned on stainless hinge pins. Any reason not to use aluminum hinge pins (much cheaper)? Thanks, Nok It sounds as if the hinge pins will not have much stress. How about using some plastic pipe for hinge pins? Maybe CVPC. It will not rust and will not encourage the aluminum to rust. It is very cheap. Dan |
#13
Posted to rec.crafts.metalworking
|
|||
|
|||
Material for hinge pins in aluminum
On Oct 14, 6:03*pm, "Nok" wrote:
Dan, I ended up with a hybrid of your idea. *I bought some PEX and turned it down on the lathe a few thou. *Man it machines easy! *Then I turned some aluminum bar as a "core" for the PEX. *No contact between the aluminum and the PEX is going to be a very good bearing surface I believe. *Thanks for the idea! You are welcome. Sounds like you came up with a better version of what I was thinking of. Dan |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
left hinge door, right hinge storm | Home Repair | |||
Removing roll marked material data from aluminum bar stock | Metalworking | |||
Removing roll marked material data from aluminum bar stock | Metalworking | |||
Request for material recommendation for a Titanium grade or similarlightweight material with high yield strength | Metalworking | |||
U.S. tests new ceramic armor made of aluminum oxynitride (clear aluminum) | Metalworking |