The specific process of annealing heat treatment of high alloy white cast iron using medium frequency induction heating machine

The carbon in white cast iron exists entirely in the form of combined carbon, and no graphite appears. Therefore, white cast iron has high wear resistance, but is brittle and has poor impact load resistance. It is mainly used in crushing plates and bottom plates of jaw crushers, blades and shot blasting wheels of shot blasting machines, plow mirrors, etc. Wear-resistant parts that do not require cutting. Among them, high-alloy white cast iron, especially high-silicon and high-chromium white cast iron, will produce large casting stress during the casting process. If a medium-frequency induction heating machine is not used for annealing heat treatment in time, it will suffer vibration or environmental changes. Castings are prone to cracks and cracking.

The stress relief annealing heat treatment of high-alloy white cast iron is carried out using a medium frequency induction heating machine, where the heating temperature is 800-900°C, and then cooled to 100-150°C and air-cooled out of the furnace. This equipment is used to anneal and heat treat high-alloy white cast iron. The inductor is a copy inductor made according to the specifications of the workpiece, which can effectively ensure the uniformity of the annealing temperature and annealing area, so that the annealed high-alloy white cast iron can meet the working requirements. need.

We all know that the heat treatment process plays a vital role in the heat treatment effect and even the quality of the workpiece. Therefore, it is necessary to understand and master the heat treatment process of the workpiece. This article briefly introduces the stress relief annealing process of high-alloy white cast iron. I hope it will be helpful to your work.