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对高速钢在高温流动石墨粒子电炉中加热时出现的熔瘤进行了金相分析,发现高温增碳使钢表面熔点降低,用涂料保护法可防止熔瘤的产生,从而可用流动石墨粒子电炉进行高速钢淬火时的加热(1300℃)。一、熔蚀现象在对高速钢木刨刀进行流动粒子电炉加热淬火后,发现刨刀表面有局部熔蚀现象(如图1)。
The metallurgical analysis of the high-speed steel in the high-temperature flow of graphite particles heated in the electric furnace was found in the metallographic analysis and found that high temperature carbon reduction of the steel surface melting point, with coating protection method to prevent the formation of nodules, which can be used in the flow of graphite particle furnace High-speed steel quenching heat (1300 ℃). First, the phenomenon of corrosion In the high-speed steel wood planer for electric particle furnace heating after quenching, planing surface erosion was found (see Figure 1).