文档介绍：本科毕业论文(设计)
论文题目: GCr15轴承钢电脉冲球化退火热处理工艺参数的优化
GCR15 BEARING STEEL BALL OF ELECTRICAL PULSE PARAMETERS OF ANNEALING HEAT TREATMENT PROCESS OPTIMIZATION
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所学专业:机械设计制造及其自动化
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GCr15轴承钢电脉冲球化退火热处理工艺参数的优化
摘要
GCrl5钢是工业生产中广泛使用的一种滚动轴承钢钢,为提高轴承钢的使用寿命,改善组织性能,一直是工作者关注的问题。而锻扎状态的GCrl5滚动轴承钢原始组织中碳化物的形态,尺寸和分布,对轴承钢使用寿命的提高至关重要。在工业生产中一般通过传统普通等温球化退火处理工艺,使GCrl5滚动轴承钢组织中碳化物以细小颗粒状、弥散分布在基体中。但传统的普通等温球化退火工艺,由于加热温度高、保温时间长(既13h左右)或工艺复杂,使等温球化退火工艺过程的效率显著下降。因此我们寻找了一种加快碳化物球化速度,提高等温球化退火工艺效率的新方法,探讨了一种在脉冲电场作用下对GCrl5滚动轴承钢球化退火的新工艺。
关键词:正交试验法,电脉冲处理,GCr15钢,球化退火
GCR15 BEARING STEEL BALL OF ELECTRICAL PULSE PARAMETERS OF ANNEALING HEAT TREATMENT PROCESS OPTIMIZATION
Abstract
GCrl5 steel is widely used in industrial production in a steel rolling bearing steel, bearing steel to improve the service life and anizational performance, has been a concern of the workers. The state bar GCrl5 Forged steel rolling bearing carbide original form anization, size and distribution, to increase the service life of bearing steel is essential. Industrial production in general through traditional ordinary spheroidizing isothermal process, so that rolling bearing steel anizations to small granular carbide, dispersed in the matrix. However, the traditional ball of ordinary isothermal annealing process, due to the high heating temperature, holding time longer (both around 13h) or plex technology, so that the ball of the isothermal annealing process efficiency decreased significantly. Therefore, we find a kind of speeding up the rate of carbide ball and improve ball isothermal annealing process and the efficiency of the new methods, discusses the role of a pulsed electric field of rolling bearing steel ball GCrl5 under the new process of annealing.
Keywords:Orthogonal test, Electropulsing, GCr15 steel, Spheroidizing annealing
目录
1 绪论 1
2 试验准备 1
1
制作高温箱式电阻炉的炉门 2
实验目的 2
3 试验原理 2
退火工艺 2
球化退火 3
电脉冲原理 3
实验材料 4
试验过程 4
4 实验方案 6
正交实验数据表 6
正交实验设计