Fit Up Welding
Ensure that the joint surfaces are smooth and uniform.
Fit up welding. Everything has to be square or the final bolt up might be off. If the tolerances cannot be achieved the end preparations may be built up by welding with an approved wps or wts or re prepped by machining or grinding. Good fit up of the joint is crucial for high quality welding. 8 fit up of joints to be welded the fit up of the joint selected for any welding job materially affects the quality strength and appearance of the finished weld.
The examples do not illustrate the entire range of submerged arc welding applications but the principles described can be applied to all types. The following section is devoted to a discussion of the effects of fit up on weld quality. A experienced welder may be able to weld thicker material with some pre heating but i would not suggest it welding has many applications in the construction industry but the average home owner can have multiple uses for welding as well. Large diameter vessel shells pipe and fittings are often out of round and require.
In this video i show one method of fitting a flange to a length of pipe. You must carefully prepare pipe joints for welding if you want good results. Welcome in this document i will outline the basic step by step instructions on how to weld mild steel up to 3 8 thick. An unfused root can be a stress riser for fatigue cracking and or a site for deposit formation and corrosion.
Clean the weld edges or surfaces of all loose scale slag rust paint oil and other foreign matter.