Welding Hardened Metal. Prior to making a welding repair slowly heat the workpiece in a furnace or with a gas burner to between 600F and 750F. This transformation generates stresses because the weld is normally highly constrained with a concomitant risk for cracking unless great care is exercised.
Hello I have an application where I need to weld a hardened shaft to a mild steel plate 10 ga CRS. In what follows a description is given of the welding equipment Welding methods for tool steel Shielded metal-arc welding SMAW or MMA PRINCIPLE. Welding hardened steel can be tricky because the heat used in the welding process may cause the metal surrounding the weld joint to become brittle if proper heating and cooling methods are not used to prepare the metal.
Welding Effects And Techniques For Hardening The only area of steel that can be positively or negatively affected by welding is known as the heat-affected zone or HAZ.
Welding hardened steel can be tricky because the heat used in the welding process may cause the metal surrounding the weld joint to become brittle if proper heating and cooling methods are not used to prepare the metal. IF this is acceptable then welding should not be an issue. The heat input from welding can change the harndess and wear resistance of the Hardox and the 4140. This is the only part of the metal that will have any impact assuming the right metal is used as a filler.