45钢锻后余热热处理研究.doc

45钢锻后余热热处理研究
摘要:45钢作为最常用的中碳调质结构钢,其锻件的应用极其广泛,45钢锻件热处理还可以得到进一步的完善。通过对45钢锻造和45钢锻件锻后常规热处理的研究,利用所学的金属学与热处理相关知识,通过工艺性分析得出如何在45钢锻造结束时利用45钢的终锻温度直接进入热处理的工艺方法,最后,总结出45钢锻后余热热处理的工艺方案。通过实验验证,分析实验结果,比较得出45钢锻后余热热处理的工艺性能。45钢锻后余热热处理减少了45钢锻后进行的热处理工序,降低了45钢锻件的热处理成本。在一定程度上,提高了45钢锻件的机械性能,在实际生产中,具有巨大的经济效益。
关键词:45钢,锻造,热处理,余热热处理
Study on heat treatment of waste heat after 45 steel forging
Abstract:45 steel is the monly used medium carbon steel, and the application of its forging is very extensive, and 45 steel forging heat treatment can be further improved. Through the study of 45 steel forging and 45 steel forgings after conventional heat treatment, the author uses the metal science and heat treatment related, and through the process of analysis of how to draw at the end of the 45 steel forging using 45 steel final forging temperature and then it will directly into the process of heat treatment. Finally, this paper summarizes the 45 steel after forging heat treatment process. Through the experimental verification, the experimental results are analyzed and the technological properties of the heat treatment after 45 steel forging are obtained. 45 steel after forging heat treatment reduces the 45 steel forging after the heat treatment process, which reduces the 45 steel forging heat treatment cost. In a certain extent, it improves the mechanical properties of 45 steel forgings, The important is the huge economic benefits in the actual production.
Keywords: 45 steel, Forging, Heat treatment, Waste heat treatment
目录
1 绪论 1
关于45钢 1
45钢的用途 2
Fe­Fe3C相图 2
2 45钢的锻造 4
关于锻造 4
45钢的锻造温度 4
45钢的锻造比 5
3 45钢的热处理 6
关于45钢的热处理 6
45钢的热处理规范 6
45钢的热处理工艺 6
45钢的退火 6
45钢的正火 7
45钢的调质 9
45钢的其他热处理 11
4 45钢的锻后余热热处理 13
关于锻后余热热处理 13
45钢锻后余热正火工艺 13
45钢锻后余热调质工艺 13
5 实验 15
实验方案 15
实验目的 15
实验设备及材料 15
实验内容及步骤 15
注意事项 16
实验数据 16
实验数据 16
实验数据分析 17
实验结论 18
6 实例 19
锻后的停留时间