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垫板为砂轮模具零件之一(见图1),系由25mm厚的20钢板加工而成,后经渗碳、淬火及低温回火处理,再经表面磨削处理而制成厂家所需要的产品。该产品的热处理技术要求为:板面渗碳层厚度2mm,淬火硬度58~63HRC,淬火后平面度及平行度不得超过0.30mm。由于垫板需渗碳、淬火,不可避免地要
Pad is one of the wheel mold parts (see Figure 1), made of 25mm thick 20 steel plate processed by carburizing, quenching and tempering at low temperature, and then by surface grinding made of the manufacturers need product. The product’s heat treatment technology requirements: carburizing layer thickness of 2mm, quenching hardness 58 ~ 63HRC, flatness and degree of parallelism after quenching shall not exceed 0.30mm. As the mat required carburizing, quenching, inevitably want