IF I am just spot welding, do I need to worry about preheating and slow cooling?
I got to plug some bolt holes in cast iron. See the holes to the side of the turbo in the pict? I can't use bolts cause the heads will interfere with the turbo. So, what I want to do is screw in a stud, cut it flush, then tack weld it is so it cant rattle loose and fall in. I have heard all the horror stories of welding cast iron. Thoughts?
I have a cheap mig welder with Argon/CO2
I got to plug some bolt holes in cast iron. See the holes to the side of the turbo in the pict? I can't use bolts cause the heads will interfere with the turbo. So, what I want to do is screw in a stud, cut it flush, then tack weld it is so it cant rattle loose and fall in. I have heard all the horror stories of welding cast iron. Thoughts?
I have a cheap mig welder with Argon/CO2