Precision casting refers to the process of obtaining precision dimensional castings. Compared with traditional sand casting technology, precision casting produces more accurate casting dimensions and better surface smoothness. Including investment casting, ceramic casting, metal casting, pressure casting, and loss of mold casting.
Precision casting, also known as wax loss casting, is an advanced technology for near net forming. Its products are precise and complex, close to the final shape of the parts, and can be used directly without the need for processing or a small amount of processing.
The forging of precision castings includes investment casting, ceramic casting, metal casting, pressure casting, and loss of mold casting.
One commonly used method is investment casting, also known as wax loss casting: selecting suitable investment materials (such as paraffin) for investment casting; Repeatedly immerse the refractory coating on the investment mold, pour the refractory sand process, and harden and dry the outer shell; The cavity is obtained by dissolving the internal melt. Roast the shell to obtain sufficient strength and burn off the remaining molten material; Metal materials required for casting; After the sand particles solidify and cool, they are taken out of the shell to obtain high-precision finished products. Perform heat treatment, cold processing, and surface treatment according to product requirements.