【摘 要】
：
在热处理工艺中,已进行研究气门钢上喷镀耐磨层并随后熔化的过程和熔化对金属组织的影响。拖拉机与汽车涡轮增压发动机的排气门是一种承受强载荷的零件,它采用40X10C2M(107)
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在热处理工艺中,已进行研究气门钢上喷镀耐磨层并随后熔化的过程和熔化对金属组织的影响。拖拉机与汽车涡轮增压发动机的排气门是一种承受强载荷的零件,它采用40X10C2M(107)、45X14H14B2M(69)和55X20Γ9AH4M(303)耐热钢制造。强化发动机的气门在下述艰难条件下工作:承受冲击拉伸载荷、高温作用以及气体锈蚀破坏。气门头处于最复杂的使用条件下工作。图1示出在气体作用下,排气门头上的温度分布
In the heat treatment process, the process of spraying the wear resistant layer on the valve steel and subsequent melting and the effect of melting on the metal structure have been studied. The exhaust valve for tractors and automotive turbocharged engines is a heavy-duty part that is made of 40X10C2M (107), 45X14H14B2M (69) and 55X20Γ9AH4M (303) heat-resistant steels. Enhance the engine valve in the following difficult conditions: to withstand the impact of tensile load, high temperature and gas corrosion damage. Valve head in the most complex conditions of use to work. Figure 1 shows the temperature distribution on the exhaust valve head under the influence of gas
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