55CrMo钢感应淬火工艺的数值模拟及工艺优化

发布时间：2018-02-28 05:10

本文关键词： CrMo钢感应加热淬火滚珠丝杠硬度　出处：《材料热处理学报》2015年01期 　论文类型：期刊论文

【摘要】：借助工艺实验和数值模拟技术,优化了55Cr Mo钢精密滚珠丝杠感应加热及冷却工艺参数,改善了丝杠感应淬火后的淬硬层分布。构建了丝杠单感应圈加热的有限元模型,通过数值模拟得到了单感应圈加热时沟道区域的温度曲线。数值模拟结果表明:沟道区域的温度场分布不合理是导致淬硬层分布不合理的主要原因。针对单感应圈感应淬火工艺的不足,提出了双感应圈加热工艺。数值模拟结果表明,采用双感应圈加热工艺、喷水冷却带宽度为40 mm时,可保证丝杠沟道顶部的淬硬层深度约为6.2 mm,沟道底部的淬硬层深度约为3.0 mm。工艺实验结果表明,丝杠沟道区域的淬硬层分布得到较大的改善,数值模拟结果与工艺实验结果吻合得较好。
[Abstract]:The parameters of induction heating and cooling of 55CrMo steel precision ball screw are optimized with the aid of process experiment and numerical simulation technology, and the distribution of hardened layer after induction quenching is improved. The finite element model of single induction coil heating of lead screw is constructed. The temperature curve of channel region in single induction coil heating is obtained by numerical simulation. The numerical simulation results show that the unreasonable distribution of temperature field in channel region is the main reason for unreasonable distribution of hardened layer. Deficiencies in coil induction quenching process, The double induction coil heating process is proposed. The numerical simulation results show that when the width of the spray cooling belt is 40 mm, the double induction coil heating process is adopted. The depth of the hardened layer at the top of the lead screw channel is about 6.2 mm, and the depth of the hardened layer at the bottom of the channel is about 3.0 mm. The experimental results show that the distribution of the hardened layer in the lead screw channel area is greatly improved. The numerical simulation results are in good agreement with the experimental results.
【作者单位】：山东科技大学材料科学与工程学院;山东大学材料科学与工程学院;
【基金】：国家自然科学基金(51175302) 国家科技重大专项(2011ZX04014-031) 教育部“新世纪优秀人才支持计划”(NCET-12-0342) 山东科技大学人才引进科研启动基金(2013RCJJ002,2013RCJJ005)
【分类号】：TG161

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