How To Avoid Aluminum Die Casting From Being Damaged
Aluminum Die Casting In manufacturing, the most common forms of mold damage are cracks and cracks. Stress is the main cause of mold damage. Thermal, mechanical, chemical, and operational shocks are all sources of stress, including mechanical stress and thermal stress. Improper heat treatment during mold processing will result in mold cracking and premature scrapping, especially if only quenching and tempering is used without quenching. , And then surface nitriding process, surface cracks and cracks will appear after die casting several thousand times.
The stress generated during the quenching of steel is the result of the superposition of the thermal stress during the cooling process and the structural stress during the phase transformation. The quenching stress is the cause of deformation and cracking, and the solid must be tempered to eliminate the stress. During the production process, the mold temperature mold should be preheated to a certain temperature before production. Otherwise, chilling will occur when the high-temperature molten metal is filled, which will cause the temperature gradient inside and outside the mold to increase, forming thermal stress, and cracking the mold surface. Even cracking.
In the production process, the mold temperature continues to rise. When the mold temperature is overheated, it is easy to produce mold sticking, and the moving parts fail to cause damage to the mold surface. A cooling temperature control system should be installed to keep the mold working temperature within a certain range.