High temperature brazing of diamond tools
High temperature brazing of diamond tools
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发表时间：
2005
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通讯作者：
Yao Zheng-jun
中科院分区：
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作者：
Yao Zheng-jun
开发了一种金刚石钎焊新工艺。采用这种新技术，金刚石磨粒与碳钢之间可以实现最佳的化学和冶金结合，而不会对金刚石磨粒造成任何热损伤。显微分析和X射线衍射分析结果表明，金刚石与基体之间存在一层碳化物，其成分为Cr_3C_2、Cr_7C_3和Cr_（23）C_6。性能试验表明，钎焊金刚石空心钻头具有良好的加工性能。与传统的电镀金刚石取芯钻头相比，采用新工艺制造的钎焊金刚石取芯钻头加工效率高，使用寿命长。
A new brazing technique of diamond was developed. Using this new technique optimum chemical and metallurgical bonding between the diamond grits and the carbon steel can be achieved without any thermal damages to diamond grits. The results of microanalysis and X-ray diffraction analysis reveal that a carbide layer exists between the diamond and the matrix, which consists of Cr_3C_2, Cr_7C_3 and Cr_(23)C_6. Performance tests show that the brazed diamond core-drill has excellent machining performance. In comparison with traditional electroplated diamond core-drill, the brazed diamond core-drill manufactured using the new developed technique has much higher machining efficiency and much longer operating life.