1. We meticulously select high-quality metal materials to ensure the chemical composition of the casting materials meets the required standards. With minimal inclusions in the metal materials, the quality of the molten metal is high during the melting process, resulting in excellent quality castings.

Ensure the continuity of casting. During the casting process, the foundry workers must control the pouring speed to avoid the formation of oxide layers in the castings due to interruptions, which may even result in cold shuts.

3. Prevent core gas formation. The cores should have very low gas generation, or sufficient exhaust holes to avoid the formation of air holes due to core gas.

4. Prevent Porosity Defects. During casting, it is crucial to avoid gases being drawn into the casting system. Otherwise, a series of oxidized air bubbles will form in the castings, leading to porosity defects and affecting the overall quality of the finished casting products.

5. Prevent Convection Defects. Convection issues are crucial in the casting production process. The damage caused by convection in casting primarily affects castings with medium wall thickness. During casting production, the convection damage can be reduced through the casting structure or process, by flipping the casting after filling, or avoiding upward shrinkage. Thin-walled and thick-walled castings are generally unaffected by convection.

6. Control residual stresses. In the casting production process, avoid using boiling water as quenching fluid and prohibit water quenching of high-temperature solution treatment for light alloy castings. For castings with relatively low visible stress, polymer quenching medium or forced air quenching can be adopted.