不同造孔剂树脂金刚石砂轮对硬质合金球阀的精密研磨  

Precision grinding of cemented carbide ball valves by resin diamond wheels with different pore-forming agents

作　　者：朱延鑫 赵峰 ZHU Yanxin;ZHAO Feng(Zhejiang Conex Bänninger Flow Control Co.,Ltd.,Jiaxin 314305,Zhejiang,China;Shandong ZhongLi High Pressure Valve Co.,Ltd.,Zaozhuang 277000,Shandong,China)

机构地区：[1]浙江班尼戈流体控制有限责任公司,浙江嘉兴314305 [2]山东中力高压阀门股份有限公司,山东枣庄277000

出　　处：《金刚石与磨料磨具工程》2024年第2期199-205,共7页Diamond & Abrasives Engineering

摘　　要：为改善硬质合金球阀的加工效果,在树脂金刚石砂轮中引入造孔剂,对其力学性能、微观形貌及磨削性能进行分析,研究空心玻璃球和塑料球造孔剂对树脂金刚石砂轮性能的影响。结果表明:随着造孔剂体积分数增加,树脂砂轮的抗折强度逐渐下降,且2种造孔剂对抗折强度的影响基本一致;砂轮的硬度随造孔剂体积分数的增加亦逐渐下降,但空心玻璃球造孔剂对砂轮硬度的影响显著大于塑料球的;加入造孔剂明显提升了砂轮的锋利性,空心玻璃球体造孔剂体积分数为15%和塑料球造孔剂体积分数为20%的砂轮综合性能最好,且后者的综合性能优于前者的。To improve the machining effect of cemented carbide ball valves,pore-forming agents were introduced into resin diamond wheels.The mechanical properties,microstructures,and grinding performances of the wheels were analyzed,and the effects of hollow glass ball pore-forming agent and plastic ball pore-forming agent on the performances of resin diamond wheels were studied.The results show that the bending strength of the grinding wheel decreases gradually with the increase in the content of pore-forming agent,and the influence of the two pore-forming agents on bending strength is basically the same.The hardness of the grinding wheel also decreases with the increase in pore-forming agent content,but the influence of the hollow glass ball pore-forming agent on the hardness of the grinding wheel is significantly greater than that of the plastic ball.The addition of pore-forming agent significantly improves the sharpness of the grinding wheel.The comprehensive performance of the grinding wheels is best when the volume fraction of hollow glass balls is 15%and the volume fraction of plastic balls is 20%,but the latter has better overall performance than the former.

关 键 词：硬质合金球阀 造孔剂 磨削性能 精密磨削 树脂金刚石砂轮 

分 类 号：TG74[金属学及工艺—刀具与模具] TG58[化学工程—高温制品工业] TQ164