一种细滤网冷冲压加工的工艺改进  

Improvement of cold stamping processing for a fine mesh part

作　　者：陈燕[1] 邱江红[1] 

机构地区：[1]中国空空导弹研究院工程技术部,河南洛阳471009

出　　处：《锻压技术》2013年第4期23-26,共4页Forging & Stamping Technology

摘　　要：某产品燃气过滤器中的一种细滤网零件结构特殊。在冲压成形过程中,丝网的成形流动性差,易断丝、变形,零件尺寸检测不易准确,导致很难加工出合格的细滤网零件。本文从零件结构、丝网材料特点、成形加工方法等方面分析了细滤网加工的工艺难点。在原冲压工艺的基础上,通过采取调整成形纤维方向、预成形尺寸、模具成形表面圆滑过渡尺寸、细化成形步骤、固化检测方法等工艺改进措施,成功加工出符合细滤网过滤功能的合格零件。经批量生产加工及装配使用验证,改进工艺后的细滤网零件质量稳定、外观美观,其产品合格率达98%以上。A fine mesh parts for some product gas filter is of special structure.In the forming process,for the screen material has poor forming liquidity,and are easily to be broken and deformed,and the size testing is not accurate,it is difficult to work out qualified parts.As a result,in the view of the structure of the parts,material characteristics of wire mesh and forming method,the fine mesh processing difficulties were analyzed.In the original method based on the analysis of the process,by adjusting forming fiber direction,the perform size,the size of die forming surface smooth transition,refining the forming steps,and curing the test method,the qulified parts with the fine mesh filtering capabilities were worked out successfully.Through process test and production processing and assembly,it is proved that the improved parts are of stable quality,beautiful appearance and the qualified percent is up to 98% or more.

关 键 词：冲压成形 细滤网 纤维方向 断丝 

分 类 号：TG386[金属学及工艺—金属压力加工]