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通过对某大型天线传动箱轴齿轮材料的检测分析表明,发生断齿的主要原因是该轴齿轮在生产过程的热处理淬火工序中严重过烧,基体材料晶粒严重粗大脆化,齿根部位的冲击韧度只有标准值的42%。
The test and analysis of the gear material of gearbox of a large antenna shows that the main reason of the broken gear is that the shaft gear is seriously over-burned during the heat-treatment and quenching process in the production process, the crystal grains of the base material are heavily and coarsely brittle, Impact toughness is only 42% of the standard value.