Study of different Pore-marking agent on properties of resin bond diamond wheel of fine grinding cemented carbide ball valve
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摘要: 摘要:为改善硬质合金球阀的加工,在树脂树脂金刚石砂轮中引入造孔剂。通过力学性能分析、SEM扫描电镜对试样微观形貌的分析,以及磨削性能的分析,研究了空心玻璃球造孔剂和树脂球造孔剂对树脂金刚石砂轮性能的硬性。研究表明:随着造孔剂含量的增加,砂轮的抗折强度逐渐下降,且两种造孔剂对抗折强度的影响基本一致;砂轮的硬度随着造孔剂含量的增加亦逐渐下降,但空心玻璃球对砂轮硬度的影响显著大于树脂球。通过磨削性能可知:造孔剂的加工明显提升砂轮的锋利性,空心玻璃球体积分数为15%的砂轮与树脂球体积分数为20%的砂轮,其综合性能最好,且后者的综合性能优于前者。Abstract: Abstract:In order to improve the processing of cemented carbide ball valve, a pore forming agent was introduced into the resin diamond grinding wheel. Through the analysis of mechanical properties, he analysis of micromorphology of specimens by SEM , and the analysis of grinding performance, the hardness of hollow glass spherical pore forming agent and resin spherical pore forming agent on the properties of resin diamond grinding wheel was studied. The results show that with the increase of pore forming agent content, the flexural strength of the grinding wheel gradually decreases, and the influence of the two pore forming agents on flexural strength is basically the same. The hardness of the grinding wheel gradually decreases with the increase of the pore forming agent content, but the influence of hollow glass balls on the hardness of the grinding wheel is significantly greater than that of resin balls. Through the grinding performance, it can be seen that the processing of the pore forming agent significantly improves the sharpness of the grinding wheel, and the grinding wheel with a volume fraction of 15% of the hollow glass ball and the grinding wheel with a resin ball volume fraction of 20% have the best comprehensive performance, and the comprehensive performance of the latter is better than the former.
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Key words:
- Carbide ball valve /
- pore forming agent /
- Grinding performance
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