As a general rule, weld deposits will respond to the heat treatment recommended for the average tool steel in its classification. Alloy Welding Electrodes . Also in this group are the more highly alloyed electrodes used to weld dies for forging, drawing and forming. These electrodes produce machinable weld deposits which are not affected by heat treatment. They are available in several types, providing a range of hardness in the weld deposits.
Additional hardness is obtained by work hardening.
Other alloy electrodes are sometimes used in conjunction with tool and die welding electrodes, especially for applications on cast dies for drawing or forming. Current, Coatings, and Deposits. The percentage of alloying elements lost in the weld deposits during welding can be regained by selecting an electrode which incorporates the required alloys in the coating. Mineral-alloyed coatings are preferred. The introduction of a mineral-alloyed coating on the electrodes also helps produce a desirable spray action of the arc and forms a protective slag, which is easily removed.