Precision casting believe that everyone in the casting pouring us the details of all major operations, then when we work on casting we should abide by what kind of operation requirements?In production, which should be followed when pouring temperature, the principle of low temperature pouring.Because the liquid metal melt temperature is advantageous to the complete fusion, slag inclusion floating, convenience of slag removal and degassing, reducing slag inclusion and porosity defects of machine tool castings;Using low pouring temperature, is beneficial to reduce the gas solubility in the liquid metal, liquid, shrinkage and high temperature liquid metal baking of cavity surface, avoid adhering sand, the appearance of porosity and shrinkage cavity defects.Therefore, on the premise of guarantee full of mould cavity, USES the low pouring temperature as much as possible.