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Aluminum alloy die-casting moulds are widely used in the manufacturing industry due to their low cost, high strength and good malleability. However, after a period of time of operation, cracking may occur in an aluminum alloy die-casting mould. There are many factors that cause cracking, and some reasonable and feasible preventive measures must be taken.
The most common cause of cracking in aluminum alloy die-casting moulds is stress relaxation or poor stress tolerance. Stress relaxation is a process by which stress levels in a material decrease over time due to the application of external forces. When parts are cast with a mold, differences in temperature and shrinkage after solidification can cause the mold to deform and break down over time, resulting in cracking. In addition, poor stress tolerance can also lead to cracking in aluminum alloy die-casting moulds, especially when the moulds are under simulated or excessive casting pressure or high temperatures.
In order to prevent the cracking of aluminum alloy die-casting moulds, first, it is necessary to properly plan the production process. The structural design of the mould and the reasonable selection of materials are of great importance. In addition, it is necessary to maintain reasonable design and production parameters for each part of the mould. During production, it is necessary to select die-casting parameters properly and operate under reasonable pressure and temperature. It is also important to pay attention to the cooling and solidification of casting after die-casting, as improper cooling and solidification can also lead to cracking.
In addition, regular maintenance of the die-casting mould is also necessary to ensure its normal use and prevent cracking. Regular maintenance helps to ensure that the die-casting mould is in good condition and that no parts are worn out. Proper maintenance also helps to lubricate the mould, keeping it in good condition longer.
Finally, before placing the order for a die-casting mould, it is important to select a reputable, high-quality supplier. It is important that the die-casting mould is produced according to the specifications required for each part and that it meets all quality standards. Choosing a good supplier and having the proper quality assurance tests done on the die-casting mould can ensure that it will not crack after a period of use.
In summary, cracking of aluminum alloy die-casting moulds is caused by poor stress tolerance or stress relaxation, improper structural design and production process, improper die-casting parameters, poor cooling and solidification, insufficient maintenance and poor quality assurance. In order to prevent cracking, manufacturers should plan the production process properly, select reasonable die-casting parameters, maintain the moulds regularly, and choose a reputable and high-quality supplier. Following these steps can help reduce the chances of cracking in an aluminum alloy die-casting mould.
