Most field welding machines are portable, that is, they are on a truck and can be moved around. The welding equipment is usually a generator driven by a gasoline-powered engine and puts a DC current that may be reversed by changing the leads.
The welding…
This document covers the procedure to prepare a WPS – Welding Procedure Specification & PQR – Procedure Qualification Record for Overlay weld, Corrosion Resistant Overlay and Wear Resistant Overlay both.
The procedure refers international standard ASME BPVC Section IX, ( American Society of Mechanical Engineers,…
The welding processes are not the scope of this manual, specific for welding inspections. However, only for refreshing, the most common arc welding processes used in heavy and medium carbon and alloy steel manufacturing are:
SMAW: Shielded Metal Arc Welding – stick welding electrode;
GMAW: Gas…