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指出新一代主战坦克履带销的选材、形状设计及装配均合理;样机履带销在整车运行考核中暴露出的断销现象是包括原材料生产和制销生产在内的全过程工艺不合理所致;钢材生产工艺不合理造成的组织遗传性,影响钢材用户通过正常热处理发挥钢材潜力;钢材用户在制造履带销时采用切削加工,加重了履带销成品的脆断倾向;提出了全过程工艺改进意见,包括冶金厂的轧制工艺和退火规范改进,以及坦克制造厂履带销成型方法改进;采纳所提出的改进意见,将能有效遏制30CrMnSiNi2A钢在钢材用户方的终产品中,因组织遗传而产生粗断口的伪细组织;采用无切削成型加工替换现行工艺中的切削加工,更适于超高强度钢零件制造,并可节约大量(12％)昂贵的履带销超高强度钢。
It is pointed out that the new generation of main battle tank crawler pin material selection, shape design and assembly are reasonable; prototype crawler pin in the vehicle operation assessment revealed broken phenomenon is the entire process, including raw material production and marketing of production, including unreasonable process Caused by unreasonable steel production process of organizational heredity, affecting steel users through the normal heat treatment to play the potential of steel; steel users in the manufacture of crawler pin using cutting process, increased the tendency of brittle fracture of the finished track; put forward the whole process of process improvement Opinions, including the improvement of the rolling process and annealing specification of the metallurgical plant, and the improvement of the molding method for the track pin of the tank factory; adoption of the proposed improvements will effectively prevent the 30CrMnSiNi2A steel from being harmed in the end products of the steel users due to the organization of inheritance Resulting in coarse fissures of fake microstructure; the use of non-cutting forming process to replace the current cutting process is more suitable for the manufacture of ultra-high-strength steel parts, and can save a lot of (12%) expensive track pin super high strength steel.