Do you know the reasons for the cold separation of castings produced by gravity casting machines？

  When using a Gravity Casting Machine for production, will you encounter cold insulation in the castings produced? Cold shut is a casting defect in gravity cast castings. It generally occurs on thin-walled castings with large horizontal surfaces and at the final confluence of molten metal. Generally, castings can be discovered through visual inspection. Many people don’t know why cold insulation occurs. Let me help you understand.

  Generally, there are six reasons for cold shut in gravity casting castings. These can lead to cold shut in castings produced by gravity casting machines. The pouring system of the gravity Casting Machine is poorly designed, with a small number of gates and a small cross-section; the mold or molten aluminum is The temperature is low; the mold is poorly vented; the pouring speed is too slow or the pouring is interrupted; the wall thickness of the casting design is too thin or lacks appropriate fillets.。

 

  In fact, the cold shut of castings can be prevented through some methods, which can increase the casting speed and avoid interruption of molten aluminum casting; appropriately increase the temperature of the mold and molten aluminum; maintain the exhaust of the mold; increase the number and cross-section of the inner gate; follow The design process of castings requires reasonable wall thickness and rounded corners. The cold insulation of castings produced by gravity casting machines can be avoided as much as possible.

 

    Dongguan Shengshi Weiye Machinery Technology Co., Ltd. specializes in the production of Gravity Casting Machine,Low Pressure Casting Machine,Liquid Die Forging Machine and other machines. Friends in need are welcome to pay attention and learn more.