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Gravity casting machine, aluminum alloy gravity casting machine - Casting factory

by:BoQiao Machinery     2021-01-30
In the use of gravity casting machine production, you will encounter to produce castings will have a cold every situation? Cold insulation is a kind of casting defects of casting gravity casting, generally appear in the larger level on the surface of thin wall castings, metal as well as the final confluence. General type casting out after the removal of surface residual sand, through visual inspection can be found. Generally the reason of gravity casting cold-lap formation of castings has six, mold or aluminum liquid temperature is too low; The mold venting is not good; The design of gating system, gate number less, too little cross section; Casting speed is too slow or casting ceased; Casting design of wall thickness is too thin or lack of proper rounded corners. All of these can lead to the gravity casting machine to produce castings of cold insulation. Casting cold-lap can be through some methods to prevent, such as the appropriate increase the mold and the temperature of the liquid aluminum. Keep the mold exhaust good; Appropriate to increase the number of gate and cross section; Improve the speed of casting, avoid interruption of liquid aluminum casting; In accordance with the requirements for the design of the casting technology is reasonable setting wall thickness and fillet. Gravity casting machine in the production of casting cold-lap situation can avoid.
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