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Effect of TiH2 addition on the grinding performance of Cu3Sn intermetallic compound diamond wheels[J]. Diamond & Abrasives Engineering. doi: 10.13394/j.cnki.jgszz.2023.0261
Citation: Effect of TiH2 addition on the grinding performance of Cu3Sn intermetallic compound diamond wheels[J]. Diamond & Abrasives Engineering. doi: 10.13394/j.cnki.jgszz.2023.0261

Effect of TiH2 addition on the grinding performance of Cu3Sn intermetallic compound diamond wheels

doi: 10.13394/j.cnki.jgszz.2023.0261
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  • Received Date: 2023-12-01
  • Accepted Date: 2024-03-18
  • Rev Recd Date: 2024-03-04
  • Available Online: 2024-06-21
  • In order to improve the sharpness and shape retention of Cu3Sn intermetallic compound diamond grinding wheels, Cu3Sn ball-milling powders, diamond grinding blocks and grinding wheels with different TiH2 additions were prepared. The effects of TiH2 addition on the grinding performance of Cu3Sn intermetallic diamond grinding wheels were investigated by testing and analyzing the micro-morphology, oxygen content, physical phase composition, thermal effect, mechanical properties. The results show that the addition of TiH2 has the effect of inhibiting the oxygenation of Cu3Sn ball-milling powder, which is beneficial for the sintering of the powder. When the amount of TiH2 added is 2.0wt%, the oxygen content decreases from 0.67% to the minimum value of 0.51%. The addition of TiH2 improves the holding force of the matrix on the diamond, which can improve the flexural strength and hardness; when the amount of TiH2 added is too much, the flexural strength and hardness will decrease instead. When the amount of TiH2 is 1.5wt%, the flexural strength reaches the maximum value of 80.74 MPa, and the Rockwell hardness reaches the maximum value of 109.88 HRB when the amount of TiH2 is 2.0wt%. The addition of TiH2 can improve the grinding performance of the wheel, and also improve the sharpness and shape retention. When grinding cemented carbide YG8, the fastest feed rate of the grinding wheel increases from 0.02 mm/feed to 0.035 mm/feed. And the grinding ratio reaches a maximum value of 172.03 with addition of 2.0wt% TiH2, compared with 51.09 of blank sample.

     

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    通讯作者: 陈斌, bchen63@163.com
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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