久久无码人妻一区二区三区午夜_久久久久精品久久久久影院蜜桃_亚洲综合欧美色五月俺也去_交换娇妻呻吟声不停中文字幕

The white dynamic core shooter uses coated sand to make cores and is suitable for hot core boxes.The feature of the core shooter is that four guide pillars are used to install the upper and lower mold bases. The upper and lower molds are respectively installed on the upper and lower mold bases. The positioning is precise , then opening and closing molds are divided horizontally, and the material is convenient to take out . It is also equipped with core pulling , which is suitable for the production of complex products. The core shooter is widely used in the foundry industry. The cores made by the core shooter are accurate in size and smooth in surface. The woriing priciple of the core shooter is to inject the core sand mixture with solid thermosetting resin as the binder into the heated core box,and the sand core is preheated in the core box and quickly hardens to a certain thickness .It is taken out to form a finished hig-quality sand core with a smooth surface and precise dimensions.