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作者对内燃机配汽机构的主要零件汽门挺柱的几种材质;钢质汽门挺柱、淬火汽门挺柱和激冷汽门挺柱等,从基体组织结构、性能及石墨形态进行了对比分析,提出了早期损坏的原因。经试验和应用,证明,激冷铸铁是汽门挺柱的理想材质。通过试验:在化学成分基本相同的情况下,调整激冷板的厚度(即冷却速度)可得不同白口深度的铸件。在此基础上推导出计算激冷板厚度的公式。
The author of the main components of internal combustion engine with steam valve tappet several materials; steel valve tappet, quench valve tappet and chilled valve tappet, etc., from the matrix structure, performance and morphology of the graphite Comparative analysis, put forward the reason for the early damage. After testing and application, it is proved that chilled cast iron is an ideal material for valve tappet. Through the test: In the case of the same chemical composition, the thickness of the quench plate (ie cooling rate) can be cast with different white depth. Based on this, a formula for calculating the thickness of cold plate is deduced.