在磨NiTi合金时,加工表面和切削力的质量
Małgorzata Kowalczyk1, Krzysztof Tomczyk2
1Faculty of Mechanical Engineering, Cracow University of Technology, Jana Pawła II 37 Avenue, 31-864 Krakow, Poland.
Materials (Basel, Switzerland)
|January 8, 2025
概括
加工- (NiTi) 形状记忆合金具有挑战性. 这项研究发现,30°螺旋角度的涂层工具优化了表面粗度,而40°角度将切削力降到最低.
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
- 机械工程 机械工程
背景情况:
- 由于其独特的材料特性,加工像- (NiTi) 这样的形状记忆合金是复杂的.
- 实现所需的表面质量和控制切削力是NiTi合金加工中的关键挑战.
研究的目的:
- 为了研究削工具螺旋角 (未涂层和涂层) 在NiTi合金加工过程中对切削力和表面粗性的影响.
- 使用塔古奇方法优化NiTi加工参数,以改善工艺结果.
主要方法:
- 在NiTi合金上使用具有不同螺旋角度 (20°,30°,40°) 和涂层的工具进行了实验性磨试验.
- 应用了塔古奇优化方法来确定加工参数的最佳组合.
- 测量和分析了切削力和表面粗度 (Sa, Sz).
主要成果:
- 最低的表面粗度 (Sa = 0.301 μm,Sz = 3.41 μm) 通过涂层工具,30°螺旋角度,0.02 mm/牙料和45 m/分钟的切割速度实现.
- 使用涂层工具观察到的最低切削力 (F = 143.6 N),螺旋角度为40°,0.02 mm/牙料,切削速度为55 m/min.
- 工具涂层和增加的螺旋角度显著降低了切削力,提高了加工表面的质量.
结论:
- 优化的螺旋角度和工具涂层对于高效的NiTi合金加工至关重要.
- 这项研究为需要精确的NiTi加工,平衡切削力和表面完整性的行业提供了实际指导.
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