磨砂层破裂分析和高速研磨轮的强度评估
Yaofeng Guo1,2, Guanwen Qian1,2, Yizhen Li1,2
1Zhengzhou Research Institute for Abrasives & Grinding Co., Ltd., Zhengzhou 450001, China.
ACS omega
|February 3, 2025
概括
高速研磨轮的破裂是由于粘合剂故障造成的. 这种粘合剂的粘合剂.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 制造过程 制造过程 制造过程
背景情况:
- 高速研磨轮需要有效的研磨性能和用户安全.
- 一批用树脂结合的高速研磨轮在磨料层和基板之间呈现异常裂纹.
- 调查这种裂纹的根本原因对于确保产品可靠性和安全性至关重要.
研究的目的:
- 为了确定树脂结合式高速研磨轮裂纹的原因.
- 为了确定安全轮操作所需的关键粘接强度.
- 为改善安全研磨轮的设计和制造提供指导.
主要方法:
- 物理和化学分析,包括断裂观察,密度,硬度和能量谱分析.
- 气色谱-质谱学 (GC-MS),里埃变换红外光谱学 (FTIR),差分扫描热量计-热重力测量分析 (DSC-TGA) 和粘合剂的粘度测试.
- 旧和新型粘合剂的拉伸强度测试,以及用于粘合强度分析的COMSOL模拟.
主要成果:
- 分析显示,结构紧,食均,硬度或异物质没有显著差异.
- 粘合剂分析显示活性成分的反应或挥发,显著降低其性能.
- 失败批次的粘合剂具有11MPa的抗拉强度,远低于所需的23.82MPa的最低粘合强度.
结论:
- 研磨轮裂纹的主要原因是老化的粘合剂的抗拉强度不足.
- 粘合剂的低强度无法在研磨轮的成形和冷却过程中承受热应力.
- 结果为材料选择,质量控制和高速研磨轮制造过程优化提供了关键的见解.
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