Process measures of stainless steel casting

Due to the poor flow properties of stainless steel, in order to preventStainless steel precision castingThe parts produce cold barriers and cannot be cast. The structure of the casting system should be simple, and the cross-section size is larger than that of cast iron; use dry or hot casting; appropriately increase the casting temperature, generally between 1520° and 1600°C, due to the high casting temperature, The molten steel is overheated and maintains the liquid state for a long time. However, if the pouring temperature is too high, it will cause coarse grains, cracks, pores and sand sticking. Therefore, the casting temperature of generally small-sized, thin-walled and complex-shaped castings is about the melting temperature of steel + about 150°C, while the casting temperature of larger-sized and thick-walled castings is about 100°C higher.
Since the shrinkage of stainless steel precision castings is much larger than that of cast iron, in order to prevent shrinkage of castings, the riser method, condensation method and supplementary method are mostly used in the casting process to achieve continuous solidification.