Precision die casting mold factory tell you how to eliminate the stress in die casting mold?
When using a precision die casting factory, there will be temperature differences on the surface of the die. Thermal strain may sometimes occur due to temperature differences. If the thermal strain is repeated many times, the residual stress will be generated on the surface of the Zn-Al alloy die cast.
There are many factors that will affect the life of a precision die casting die factory. Now Xiao Bian has summarized a variety of methods that can improve the service life of die casting products, such as reasonable surface treatment and stress relief. Now let's follow Xiao Bian to learn more< br> When using the precision die casting die factory, there will be a temperature difference on the die surface. Thermal strain may sometimes occur due to temperature differences. If the thermal strain is repeated for many times, residual stress will be generated on the surface of zinc aluminum alloy die castings. In most cases, this residual stress is tensile stress, which will lead to hot cracks in die-casting die products. If the stress can be relieved, the residual tensile stress can be reduced, and the effect of increasing the service life of such products can be obtained from the surface< br> After learning that the hot cracks of zinc aluminum alloy die castings are caused by stress, the precision die casting mold factory found the corresponding solution through research, that is, after a period of mold testing, for example, after 1000~2000 mold times and 5000~10000 mold times of die casting, stress relief treatment was carried out respectively. This treatment can be repeated every 10000~20000 mold times in the future, so that the precision die casting mold factory can minimize the occurrence of hot cracks< br> In addition, you should pay attention to that:When the precision die casting die factorycarries out stress treatment, it is recommended that the temperature should be about 25 ℃ below the tempering temperature with high heat treatment. Normally, the temperature should be kept for 2 hours p>