Detail processing of precision casting in metal processing

For metal processing,Precision castingIt is also essential. For the processing of steel and other products, we must also pay attention to the details. Only by mastering the details of the processing can a better finished product be made, otherwise the quality of the finished product will decline. The processing details must be understood, and the processing of steel products must pay attention to the details.

1. Due to the poor fluidity of molten steel, the wall thickness of steel castings must not be less than 8mm, and the section size of the pouring system is larger than that of cast iron; use dry casting or hot casting; appropriately increase the pouring temperature, generally 1520 ℃ ~ 1600 ℃, high pouring temperature, pouring temperature High, high pouring temperature, overheated molten steel, long liquid retention time, and improved fluidity. However, if the pouring temperature is too high, it will cause defects such as coarse particles, thermal cracks, pores, and sand sticking.

2. Because ofPrecision castingThe shrinkage is much larger than that of cast iron. In order to prevent defects such as shrinkage and porosity in castings, risers, chilled iron, subsidies and other measures are mainly adopted in the casting process to achieve continuous solidification.