Effect of Coating Preparation Process on Properties of Vanadium-titanium Modified Cold Working Die Steel
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摘要: 采用不同的涂层制备工艺对钒钛改性冷作模具进行表面处理, 并对其25℃室温和300℃高温下的耐磨损性能和室温冲击性能进行了测试与分析。结果表明:采用火焰喷涂后激光熔敷的涂层复合制备工艺获得的模具较采用火焰喷涂和激光熔敷处理模具的室温磨损体积分别减小了23%和27%, 高温磨损体积减小了46%和50%, 冲击吸收功增大了29%和18%。从提高钒钛改性冷作模具的耐磨损性能和冲击性能出发, 应优选火焰喷涂后激光熔敷的涂层复合制备工艺。Abstract: The vanadium-titanium modified cold working die steels were surface treated by various coating preparation processes.The wear resistance at room temperature of 25 ℃ and high temperature of 300 ℃,and impact property at room temperature of 25 ℃ were tested and analyzed. The results show that when the composite process of flame spraying followed by laser cladding was used,the wear volume of the die steel at room temperature decreased by 23% and 27%,its wear volume at high temperature decreased by 46% and 50%,and the impact absorption energy increased by 29% and 18%,compared with those of the steels separately by coating preparation process of flame spraying and laser cladding,respectively.
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