45钢风扇电机主轴的热处理工艺改进
Improvement on Heat Treatment Technology of 45 Steel Electric Fan Shaft
李占坚
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作者单位：广西机电职业技术学院, 广西 南宁 530007
中文关键字：45钢； 风扇电机主轴； 热处理工艺； 工艺改进
英文关键字：45 steel; electric fan shaft; heat treatment process; process improvement
中文摘要：对45钢风扇电机主轴进行830 ℃加热盐水冷却后回火、790 ℃亚温加热淬火回火、830 ℃加热油冷淬火回火和830 ℃加热780 ℃保温后盐水淬火回火等四种热处理工艺试验。结果证明，预冷淬火的效果最佳，硬度均匀，无变形开裂，合格率达100%。
英文摘要：The heat treatment process experiments of the main shaft of 45 steel in fan motor were carried out. The heat treatment processes are follow: First, heated at 830 ℃, cooled in salt water and then tempered; Second, heated at a subcritical temperature of 790 ℃, then quenched and tempered; Third, heated at 830 ℃, quenched in oil and tempered; Fourth, heated at 830 ℃ and preserved at 790 ℃, quenched in salt water and tempered. The results show that the pre-cooling quenching process is the best one, bringing about uniform hardness, no deformation or cracking, and 100% pass rate.