Down And Dirty Fashion
Metallurgy is the examine of metallic. Welding Metallurgy is the examine of how welding affects the microstructure of metallic.
Did you know that there are metallurgists who commit their lives to only studying carbon steels So what about all the opposite metals like Stainless steel, nickel alloys, aluminum, magnesium, titanium, cobalt, and copper alloys
Metallurgy is such a deep and mysterious subject that it takes a lifetime to fully perceive carbon steels much much less all the remainder.
So if is such a deep topic, what likelihood does a welder have in understanding sufficient about metallurgy so as to be a greater welder.
There may be good news. And its not that I saved a bunch of money on my automotive insurance coverage by switching to GEICO.
The good news is that you dont have to grasp everything about metallurgy. You just want to know some basic ideas.
The absolute basic thing to grasp is that heat from welding affects steel. That sounds really simple but it’s profound. Why As a result of heat impacts completely different metals in different ways.
When you heat a piece of steel to pink sizzling, after which quench it by dunking it in a bucket of cold water, what do you assume happens If you reply “it hardens” you’re solely partially right. Only some metals harden by heating and quick cooling. Most other metals react completely in a different way.
Carbon and low alloy Steels like 4130, software steel, forged iron, and some 400 series stainless steels harden by quick cooling from a purple sizzling temperature.
However most different stainless steels, nickel alloys, aluminum, magnesium, titanium, cobalt, and copper alloys will truly soften and lose properties by heating up purple sizzling and fast cooling.
So what does this imply to you the welder
If you’re doing a weld on 4130 chromoly, it’s worthwhile to know not to speed cool the weld or it’s going to harden.
If you’re welding 6061 t6 aluminum, you have to know that the weld area will soften if it gets too hot for too long, and energy might be lost and by no means regained except a full heat remedy will be carried out.
Welding 301 full hard stainless steel is easy to do, but heat from welding recrystallizes the work hardened microstructure and the power and hardness goes right out the window.
Welding 304 stainless could cause carbon and chromium to bind up and type chromium carbides if the weld area stays too sizzling for too lengthy.
So do you get the picture. Heat impacts different metals in different ways.
Welding Metallurgy studies exactly how the heat from welding affects steel and should you the welder take the time to review metallurgy, the information gained will make you higher.
Creator Field Jody Collier has 1 articles online
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