涂层制备工艺对钒钛改性冷作模具钢性能的影响

• 作 者: 王晓峰 赵瑞山
• 机 构: 郑州职业技术学院,国防科技大学航天与材料工程学院,
• 出 处: 钢铁钒钛
• 发表日期: 2017年05期
• 关键词: 激光熔敷 耐磨损性能 火焰喷涂 复合制 冲击性能 涂层制备 磨损体积 冷作模具 钒钛 改性

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。

Different coating preparation techniques were used to modify the surface of vanadium-titanium modified cold die. The wear resistance and room temperature impact resistance at 25 ℃ and 300 ℃ were tested and analyzed. The results show that the room temperature wear volume of flame spraying and laser cladding molds are reduced by 23% and 27% respectively, and the wear volume of high temperature wear is reduced by 46% % And 50%, impact absorption work increased by 29% and 18%. In order to improve the wear resistance and impact performance of the vanadium-titanium modified cold-work die, the composite coating preparation process of laser cladding after flame spraying should be preferred.