汽雾冷却下切削GH4169切削温度仿真与试验分析

冯新敏; 董庆尚; 胡景姝; 王柏惠

doi:10.13433/j.cnki.1003-8728.20200421

汽雾冷却下切削GH4169切削温度仿真与试验分析

doi: 10.13433/j.cnki.1003-8728.20200421

哈尔滨理工大学机械动力工程学院, 哈尔滨 150080

基金项目:

国家自然科学基金项目 51675144

详细信息

作者简介:
冯新敏(1973-), 博士, 研究方向为刀具设计及材料加工性能研究, hrbfxmgp@163.com

中图分类号: TG501.5
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- 文章访问数: 82
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- 被引次数: 0
出版历程
- 收稿日期: 2020-09-29
- 刊出日期: 2022-07-25

Simulation and Experimental Analysis of Cutting Temperature in Cutting of Superalloy GH4169 under Spray

School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China

摘要

摘要: 为了研究汽雾冷却下切削GH4169的冷却效果, 本文对汽雾冷却条件下切削GH4169的切削温度进行了试验和仿真分析。首先使用热电偶测温并采用导热反求法将热电偶测得的温度转化为实际的切削温度, 分析干切削和汽雾冷却下切削温度的变化情况。其次建立了汽雾冷却仿真模型, 设置与试验相同的切削参数进行仿真计算, 分析不同汽雾参数对切削温度的影响及产生这一影响的原因。分析得出汽雾冷却能够明显的降低切削温度; 切削温度随着压力参数的增大下降明显, 随着流量参数的增大无明显的变化。
- 汽雾冷却 /
- 切削温度 /
- GH4169 /
- 有限元仿真
Abstract: In order to study the cooling effect in the cutting of superalloy GH4169 with spray cooling, the cutting temperature in the cutting of superalloy GH4169 under the condition of spray cooling is experimentally and simulated. Firstly, the thermocouple is used to measure the temperature, and the reverse heat conduction method is used to convert the temperature measured by thermocouple into the actual cutting temperature to analyze the cutting temperature under dry cutting and spray cooling. Secondly, a simulation model for spray cooling was established, and the influence of the spray cooling parameters on the cutting temperature and the influencing reasons were analyzed under the same cutting parameters as the experiment. It is found that the spray cooling can significantly reduce the cutting temperature; the cutting temperature decreases with the increase of pressure, and has no obvious change with the increase of flow.
- spray cooling /
- cutting temperature /
- GH4169 /
- finite element simulation

HTML全文

图 1 试验流程图

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图 2 刀片测温点盲孔加及热电偶安装

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图 3 测量位置图

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图 4 导热反求法流程图

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图 5 传热模型

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图 6 刀片温度变化云图

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图 7 仿真切削温度

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图 8 汽雾冷却三维模型

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图 9 整体网格划分

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图 10 局部细化后的刀尖处网格

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图 11 颗粒速度云图

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图 12 刀尖温度云图

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图 13 不同流量下切削温度变化曲线

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图 14 不同压力下切削温度变化曲线

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图 15 不同流量下试验和仿真切削温度对比

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图 16 不同压力下试验和仿真切削温度对比

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表 1 硬质合金材料属性

导热系数/ (W·(m·℃)^-1)	密度/ (kg·m^-3)	比热容/ (J·(kg·℃)^-1)
71	15 600	452

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表 2 传热结果

序号	切削温度/℃	测量温度/℃
1	200	123.98
2	250	167.47
3	300	214.97

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表 3 试验参数及试验、仿真结果

序号	汽雾压力/MPa	汽雾流量/(L·h^-1)	热电偶温度/℃	试验切削温度/℃	仿真切削温度/℃
1	0.2	1.58	52	123.18	114.65
2	0.2	2.37	47	117.89	114.64
3	0.2	3.16	50	121.06	114.64
4	0.1	2.37	67	139.12	118.51
5	0.2	2.37	49	120.01	114.64
6	0.3	2.37	43	113.66	118.83
7	-	-	136	213.71	197.00

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