Cast iron plate (cast iron platform) Material: high strength cast iron HT200-250 face hardness HB160-210. After two treatments, the accuracy of the product is stable, good wear resistance. Cast iron platform material is generally HT200-250, foundry often casting materials according to the needs of raw materials and their own melting intermediate alloy. Self-made, in order to ensure the uniformity of the ingredients, each melt a batch, after the Central crushing and mixing, sampling five for component analysis, and then take the average. Hope to get small deformation, good wear resistance, easy processing, low cost, linear expansion coefficient and most of the measured parts (steel) close to the ratio of raw materials. Cast iron has excellent mechanical and physical properties, it can have a variety of different strength, hardness, toughness with the overall performance, but also combines one or more special properties, such as wear resistance, high temperature and low temperature, corrosion resistance, etc. . Due to a variety of factors, often appear pores, pinholes, slag, cracks, pits and other defects. Commonly used repair equipment for the TIG welding machine, resistance welding machine, cold welding and so on. Cast iron platform (cast iron plate). ???????