gate stick

The paper analyses the forming causes of blank crack and points out that higher core sand strength, bottom-casting single-layer runner and solid structure of sand core are main factors of affecting the blank casting quality.

分析了大斗毛坯产生裂纹的原因,并指出芯砂强度高、底注单层浇道、砂芯为实心结构等是影响大斗毛坯铸造质量的主要因素。

Combined with the design of injection molds and actual production,technical gists ofinjection molding design are introduced on the number of gates,flow pattern,gate position,weldline position and runner design.

结合注塑模设计和生产的实际,重点介绍了注塑模模流设计在浇口数目、流动形态、浇口定位、熔接线位置、浇道设计等方面的技术要领。