毕业论文（设计）45钢热处理油冷过程分析.docVIP

45钢热处理油冷过程分析 摘要:45钢是中碳优质结构钢，Wc=0.45%，冷热加工性能都不错，机械性能较好，且价格低、来源广，所以应用广泛。常应用于小截面、中载荷的调质件，如主轴、曲轴、齿轮、连杆、链轮等，它的最大弱点是淬透性低，截面尺寸大和要求比较高的工件不宜采用[1]。对于性能要求高的零件，必须进行调质处理。而对45钢进行调质热处理，为了得到回火索氏体，而使其具有良好的综合力学性能。 本文研究课题通过实验和软件模拟，包括对45钢热处理油淬以及对热处理前后45钢的力学性能测试并进行前后对比，同时与水淬进行比较，由于工件在淬火过程中因内外温差会导致热应力和组织应力的产生，利用有限元ANSYS软件对45钢热处理油淬过程的温度场进行模拟，分析工件的各个部分在热处理油淬过程中的温度变化情况，为优化热处理工艺，使工件经热处理后获得优良的性能提供一定的依据。 关键词： 45钢，热处理，力学性能，温度场模拟 Heat treatment of 45 steel oil cooling process analysis Abstract:45 steel is carbon in the high-quality steel, Wc = 0.45%, hot and cold processing performance is good, better mechanical properties, and low price, wide source, so widely used. Often used in the small cross section, the load of conditioning parts, such as main shaft, crankshaft, gear, connecting rod, sprocket, etc.，It is the biggest weakness of low hardenability , section size and require higher artifacts should not be used[1]. For the high performance requirements of parts, conditioning treatment must be carried out. And tempering heat treatment of 45 steel, in order to get tempered sorbite and make it has good comprehensive mechanical properties. This paper research topic through experiment and software simulation, including heat treatment oil quenching of 45 steel and the mechanical properties of 45 steel before and after the heat treatment test and compared before and after, at the same time compared with water quenching, because of the workpiece during quenching because of internal and external temperature difference will lead to the generation of thermal stress and organization stress, using the finite element ANSYS software of 45 steel oil quenching heat treatment process, to simulate the temperature field of the analysis of various parts of the workpiece in the process of oil quenching heat treatment temperature, in order to optimize the heat treatment process, the workpiece after heat treatment to obtain good performance to provide a certain basis. Key words: 45 steel, heat treatment, mecha