温度对切削加厚抛光过程中材料移除速率的影响
Zhong Yu1, Jiahuan Wang1, Jiahui Du1
1College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China.
Materials (Basel, Switzerland)
|May 14, 2025
概括
温度显著影响剪切加厚抛光 (STP) 泥的形学和材料去除率 (MRR). 温度上升降低了泥粘度和MRR,为优化STP过程提供了洞察力.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 制造过程 制造过程 制造过程
背景情况:
- 剪切加厚抛光 (STP) 利用非牛顿式泥特性,以实现高效的材料加工.
- 温度是一个关键因素,影响STP泥的质行为.
研究的目的:
- 为了研究温度对剪切加厚抛光过程中的材料去除率 (MRR) 的影响.
- 分析不同温度的剪切加厚抛光泥 (STPS) 的形变化.
主要方法:
- 在不同温度 (30°C至50°C) 下对STPS进行风湿学分析.
- 在剪切加厚条件下,高速视频观测泥的行为.
- 监测抛光力,MRR和表面粗度.
主要成果:
- 泥的峰值粘度从0.81 Pa·s下降到0.49 Pa·s,因为温度从30°C上升到50°C.
- 波状固体层的形成随着温度的增加而减少,在50°C时消失.
- 当温度从30°C升至40°C时,MRR下降了75.5% (从33.5nm/min降至7.9nm/min),比抛光力更显著的下降.
结论:
- 温度会大大改变STPS的质,影响其抛光性能.
- 高温导致泥粘度降低,MRR显著下降.
- 这些发现为STP应用中控制温度提供了实验基础.
相关概念视频
02:55Temperature Dependence on Reaction Rate
The Collision Theory
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
02:19Le Chatelier's Principle: Changing Temperature
Consistent with the law of mass action, an equilibrium stressed by a change in concentration will shift to re-establish equilibrium without any change in the value of the equilibrium constant, K. When an equilibrium shifts in response to a temperature change, however, it is re-established with a different relative composition that exhibits a different value for the equilibrium constant.
To understand this phenomenon, consider the elementary reaction:
To understand this phenomenon, consider the elementary reaction:
02:11Effects of Temperature on Free Energy
The spontaneity of a process depends upon the temperature of the system. Phase transitions, for example, will proceed spontaneously in one direction or the other depending upon the temperature of the substance in question. Likewise, some chemical reactions can also exhibit temperature-dependent spontaneities. To illustrate this concept, the equation relating free energy change to the enthalpy and entropy changes for the process is considered:
02:28Effect of Temperature Change on Reaction Rate
The Arrhenius equation,