现代制造工程 ›› 2018, Vol. 458 ›› Issue (11): 90-94.doi: 10.16731/j.cnki.1671-3133.2018.11.016

• 制造技术/工艺装备 • 上一篇    下一篇

提高针阀体流动特性及喷孔表面质量的挤压研磨技术研究

温从众, 杨奇   

  1. 安徽工业大学工程实践与创新教育中心,马鞍山 243000
  • 收稿日期:2017-05-01 出版日期:2018-11-20 发布日期:2019-01-07
  • 作者简介:温从众,硕士,助理工程师,研究方向为机械设计制造及其自动化、工业工程。E-mail:309790796@qq.com

Research of extrusion grinding technology on improving the flow characteristics of needle valve body and nozzle surface quality

Wen Congzhong, Yang Qi   

  1. Anhui University of Technology of Engineering Practice and Innovation Education Center, Maanshan 243000,Anhui,China
  • Received:2017-05-01 Online:2018-11-20 Published:2019-01-07

摘要: 针阀体流量系数及喷孔表面质量对发动机燃油动力性及排放有重要影响。研究了挤压研磨工艺参数对喷孔表面质量及流动特性的影响规律。首先分析了研磨剂中磨料颗粒材质、粒径及浓度对加工效果的影响,随后设计试验研究挤压研磨压力和时间对加工效果的影响。结果表明:在一定范围内增加压力和时间能提高表面质量及流量系数增加率。

关键词: 针阀体, 挤压研磨, 粗糙度, 流量系数

Abstract: Needle valve flow coefficient and spray hole surface quality have important influences on engine fuel power performance and emission.Researches the extrude honing parameters on the nozzle surface quality and the influence law of flow characteristics.The effect of abrasive grain material,particle size and concentration on the processing effect was studied.Then the design experiment was carried out to study the effect of extrusion grinding pressure and time parameters on the processing effect.The results show that increasing the pressure and time within a certain range can improve the surface mass and the flow rate increase rate.

Key words: needle valve, extrude honing, roughness, flow coefficient

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