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Re:welding question
Originally Posted by cua0
i'm just going to avoid this one..
wouldn't touch it with a ten foot pole, unless you paid me to, in which case, it's your money and you'll spend it how you want. Beau |
Re:welding question
ok....i had a scrap o2 housing here and took it to work, and guess what...i welded the ---- out of that thing....it did not break. i even had it cherry red. but after i was finished, i stuck it in a bucket of sand that way it would hold the heat and cool down slowly. it worked. i will post pics when i get my pipe welded on.
i stuck it in a bucket of sand that way it would hold the heat and cool down slowly. |
Re:welding question
beau: welding to cast is one thing, welding to cast exhaust parts is a whole different ballgame, the chance of it cracking out is far too high to even justify it. it'd end up being cheaper in the long run for him to go to a machine shop and have them cut out the flanges for him and he can make whatever kind of manifold he wants.
yes i know it can be done, but there's just too much risk involved. |
Re:welding question
risk of what?....that youd have to fix a crack?...these arent high stress parts really
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Re:welding question
I was reading up on repairing cracks in cast manifolds. The best way to weld it, is to use a grinder and slightly grind off the sharp edges of the crack to make a triangle shaped indent for the weldling filler to pool in. But before you start welding you should use a acelatane torch and heat up the cast to a dim redish glow ( around 600 degrees C). Once its hot weld it with the appropriate rod/wire. Then let the whole thing cool down slowly. I guess you could put it in ur oven and set it on broil and slowly decrease the temp untill its cool. This is supposed to help the molecules of the metal to form the correct lattice structure with less fatigue. Knocking the weld while still hot with a ball peen hammer will also strengthen the weld.
So i guess you could apply this method to welding mild steel to cast....but i'm no welder, just a guy reading a book trying not to look like a dumbass ::) |
Re:welding question
Originally Posted by hirostyle
I was reading up on repairing cracks in cast manifolds. The best way to weld it, is to use a grinder and slightly grind off the sharp edges of the crack to make a triangle shaped indent for the weldling filler to pool in. But before you start welding you should use a acelatane torch and heat up the cast to a dim redish glow ( around 600 degrees C). Once its hot weld it with the appropriate rod/wire. Then let the whole thing cool down slowly. I guess you could put it in ur oven and set it on broil and slowly decrease the temp untill its cool. This is supposed to help the molecules of the metal to form the correct lattice structure with less fatigue. Knocking the weld while still hot with a ball peen hammer will also strengthen the weld.
So i guess you could apply this method to welding mild steel to cast....but i'm no welder, just a guy reading a book trying not to look like a dumbass ::) not sure you want to be that patient. or know someone who has the facilities to do such a thing |
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