我厂生产的B—Y FI充气式安全阀,于由此阀为气密封,故阀壳内的光洁度直接影响到安全阀的密封质量。阀壳的材料为不锈钢,内孔为Ф28D_3的盲孔,光洁度为▽_9。因不锈钢韧性较好,故提高孔壁光洁度较为困难,我们分别采用了无刃绞刀、冷挤压加工、在超精磨床上进行精磨等方法效果均不够理想:无刃铰刀加工后刀纹显著,光洁度 Our factory production of B-Y FI inflatable safety valve, the valve is therefore airtight, so the smoothness of the valve housing directly affects the sealing quality of the safety valve. Valve shell material is stainless steel, the hole is Ф28D_3 blind hole, finish ▽ _9. Due to the toughness of stainless steel is better, it is more difficult to improve the hole wall finish, we have no blade reamer, cold extrusion processing, grinding on the super-precision grinding machine and other methods are not satisfactory results: bladeless reamer knife Significant grain, finish