机械模具材料类专业毕业论文

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1、 I 摘 要 21 世纪工业正向着节能化和高效率方向发展，在追求降低零部件生产成本和提高效率 的过程中，人们对材料的成型方法有着更深的重视。压铸是最先进的金属成型方法之一， 应用领域很广，发展速度很快。铜合金零部件具有良好的耐腐蚀性和再生率高等优点，铜 合金零部件应用领域也在不断扩展。作为铜合金零部件的主要成形工具的铜合金压铸模， 直接影响工件的性能和使用寿命。但由于铜合金的浇注温度较高，铜合金压铸模的服役条 件非常苛刻。因此目前的铜合金压铸模普遍存在无法满足使用要求及使用寿命低等缺陷， 使用寿命仅相当于铝合金压铸模寿命的 1/2-1/3。本课题从模具选材及热处理优化出发， 对铜合金压铸工艺和

2、模具的热疲劳性能进行了研究。 关键关键词词：压铸 铜合金 热处理 热疲劳 II Abstract 21 century industry is toward energy conservation and high efficiency direction, in pursuit of the lower parts production cost and improve the efficiency of the process, people to material molding method has a deeper attention. Die casting is the most

3、 advanced metal forming one of the ways, application field is broad, the speed of development soon. Copper alloy parts has good corrosion resistance and regeneration rate higher advantages, copper alloy parts in the expanding application areas. As the copper alloy parts of the main forming tools of

4、copper alloy die casting die, directly affect the performance of the workpiece and service life. But because the copper alloy casting temperature is higher, the copper alloy die casting die service condition of very harsh. So the copper alloy die casting die exists generally cant meet the application requirements and service life lower defects, service life is only aluminum alloy die casting die life 1/3 to 1/2- This topic from the mold of the materials and heat treatment optimization, the co