在高压冷却下研究超级合金的切割层特性
Lubin Li1, Shuning Chen1, Tiankang Li1
1School of Mechanical Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China.
Materials (Basel, Switzerland)
|June 10, 2023
概括
高压冷却显著降低了切削力,并提高了芯片破裂在加工超级合金与PCBN工具时. 最佳的冷却液压在50bar左右,可以延长工具的使用寿命.
科学领域:
- 材料科学 材料科学 材料科学
- 制造业 工程 制造工程
- 部落学 (tribology) 是一个学科.
背景情况:
- 超级合金在航空航天领域至关重要,但在机械加工方面具有挑战性.
- 传统的切削方法使用多晶立方化 (PCBN) 工具导致高切削力,温度和工具磨损.
研究的目的:
- 为了研究高压冷却对PCBN工具切割超级合金的影响.
- 分析高压冷却液对切割层特性和工具性能的影响.
主要方法:
- 对PCBN刀具切割超级合金进行实验研究.
- 高压冷却技术的应用.
- 分析切削力,切削温度,刀具磨损,表面粗,残余应力和芯片形态.
主要成果:
- 切削力减少了1945% (相对于干切削) 和1139% (相对于大气压切削).
- 高压冷却液减少了表面残余应力,并改善了芯片的破裂.
- 表面粗性显示出最小的影响,但在~50bar的冷却液压下,工具寿命得到增强.
结论:
- 高压冷却是加工难以切割的超级合金的有效策略.
- 优化冷却液压力对于平衡性能和工具寿命至关重要.
- 这些发现为高效的超合金加工提供了技术基础.
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