低温喷雾射流铣削Ti40阻燃钛合金的刀具耐用度

摘要/Abstract

摘要：

为研究低温喷雾射流对铣削Ti40阻燃钛合金过程中刀具磨损的改善效果，通过油冷浇注以及低温喷雾射流冷却润滑方式的对比分析，探讨了铣削过程中涂层硬质合金刀具的磨损行为与耐用度。研究了低温喷雾射流加工过程中气体压力、液体压力、靶距、液体流量对铣削温度的影响，利用响应曲面法建立了刀具铣削温度数学模型，确定了喷雾射流参数的最佳值，并进行了铣削验证。结果表明：低温喷雾射流较油冷浇注冷却润滑方式可更有效地抑制刀具磨损，能够成倍地提高刀具耐用度；建立的刀具铣削温度模型有效度高，误差较小，通过优化低温喷雾射流参数有效提高了刀具耐用度；低温喷雾射流铣削Ti40阻燃钛合金的最佳参数值为：气体压力0.5MPa，液体压力0.5MPa，靶距5mm，液体流量83mL/min。

关键词: 铣削温度, Ti40阻燃钛合金, 低温喷雾射流, 刀具耐用度, 响应曲面法

Abstract:

In order to investigate the improvement effects of the CPMJIC in milling Ti40 burn resistant titanium alloy, a comparative investigation on the performance of oil cooling and CPMJIC was conducted. The wear pattern and the tool life of the coated carbide tool were presented. The effects of CPMJIC parameters(target distance, oil flow, gas pressure, oil pressure) on milling temperature were analyzed. Based on the response surface methodology, a milling temperature model was built and experimentally verified in order to determine the best CPMJIC parameters. The experimental results show that CPMJC provides some advantages in terms of tool wear reduction and tool life greatly enhancement. The tool milling temperature model has good reliability and practical value. CPMJIC with gas pressure 0.5MPa, oil pressure 0.5MPa, target distance 5mm, oil flow 83mL/min provides the highest tool life during milling Ti40 burn resistant titanium alloy.

Key words: milling temperature, Ti40 burn resistant titanium alloy, cryogenic pneumatic mist jet impinging cooling(CPMJIC), tool life, response surface methodology

中图分类号:

TH162

吕东升, 徐九华, 傅玉灿, 丁文锋, 严凯. 低温喷雾射流铣削Ti40阻燃钛合金的刀具耐用度[J]. 中国机械工程, 2015, 26(5): 569-574.

Lü Dongsheng, Xu Jiuhua, Fu Yucan, Ding Wenfeng, Yan Kai. Tool Life for Milling Ti40 Burn Resistant Titanium Alloy with CPMJIC Method[J]. China Mechanical Engineering, 2015, 26(5): 569-574.

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