不同造孔剂树脂金刚石砂轮对硬质合金球阀的精密研磨

朱延鑫; 赵峰

doi:10.13394/j.cnki.jgszz.2023.0116

不同造孔剂树脂金刚石砂轮对硬质合金球阀的精密研磨

doi: 10.13394/j.cnki.jgszz.2023.0116

朱延鑫^1,,
赵峰²

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

详细信息

作者简介:
朱延鑫，男，1988年生，研究生、工程师。主要研究方向：阀门产品研发、工艺研究。E-mail：provalves@163.com

中图分类号: TG74; TG58; TQ164
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- 被引次数: 0
出版历程
- 收稿日期: 2023-05-19
- 修回日期: 2023-08-17
- 网络出版日期: 2023-11-06
- 刊出日期: 2024-04-01

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

ZHU Yanxin^1
,,
ZHAO Feng²

1.
Zhejiang Conex Bänninger Flow Control Co., Ltd., Jiaxin 314305, Zhejiang, China
2.
Shandong ZhongLi High Pressure Valve Co., Ltd., Zaozhuang 277000, Shandong, China

摘要

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。
- 硬质合金球阀 /
- 造孔剂 /
- 磨削性能 /
- 精密磨削 /
- 树脂金刚石砂轮
Abstract: 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.
- carbide ball valve /
- pore-forming agent /
- grinding performance /
- precision grinding /
- resin diamond wheel

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图 1 双自动研磨机构示意图

Figure 1. Schematic diagram of dual automatic grinding mechanism

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图 2 行星式研具布置示意图

Figure 2. Schematic diagram of planetary grinding tool layout

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图 3 不同造孔剂对试样抗折强度的影响

Figure 3. Effects of different pore-forming agents on flexural strengths of specimen

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图 4 不同造孔剂对试样硬度的影响

Figure 4. Effects of different pore-forming agents on specimen hardness

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图 5 不同造孔剂试样的微观形貌

Figure 5. Microscopic morphology of samples with different pore forming agents

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图 6 不同体积分数空心玻璃球造孔剂试样的微观形貌

Figure 6. Microscopic morphology of samples with different volume fractions of hollow glass balls

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图 7 不同体积分数塑料球时造孔剂试样的微观形貌

Figure 7. Microscopic morphology of samples with different volume fractions of plastic balls

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图 8 磨削图

Figure 8. Grinding diagram

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表 1 结合剂组分

Table 1. Binder components

成分	体积分数 φ₁ / %
酚醛树脂	70
弹性抛光体	10
GC	15
Cr₂O₃	5

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表 2 磨削参数

Table 2. Grinding parameters

参数	类型或取值
砂轮转速 n / (r·min⁻¹)	1 500
单次进给余量 a_p / mm	0.005
研磨压力 p / kPa	50
硬质合金球阀球体直径 D / mm	180
球体材质	YG8
球体硬度 HRA	90

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表 3 磨削实验结果

Table 3. Grinding test results

造孔剂种类	造孔剂体积分数 φ₂ / %	磨削功率 P / W	工件表面粗糙度 R_a / μm
对比样	0	626	0.030 0
空心玻璃球	10	495	0.042 0
	15	408	0.048 0
	20	321	0.090 0
塑料球	10	486	0.036 0
	15	462	0.041 0
	20	386	0.047 2

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