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用正交试验法选出了GCrl5SiMo钢热处理的最佳工艺参数：淬火温度860℃，保温时间30min，回火温度200℃，回火时间3h。此工艺满足生产需要和技术要求。附表2个。
The optimum technological parameters of GCrl5SiMo steel were selected by orthogonal test: quenching temperature 860 ℃, holding time 30min, tempering temperature 200 ℃, tempering time 3h. This process meets production needs and technical requirements. Schedule 2.