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2021.3.17
Die casting mold is a machine that can make metal change from liquid to solid. The principle is that the liquid metal is cast and filled in the die casting die at low or high speed, and then forged under pressure with the cooling process of the liquid metal, finally forming the product we want. Die casting mold can be said to be running every day, so in order to extend its service life, how should we do? Check out this guide and we cover some best methods & ways on extending the service life of die casting mold.
It is important to extend the service life of die casting mold for maintaining its functionality. This is done via certain processes during the production such as mold cooling, keep the best mold clearance, regulating the mold temperature, and timely grinding. Following these processes can help restore the efficiency of the die cast mold, and extend its lifespan.
1. Keep the best mold clearance
The gap of the mold is described in professional language, which refers to the sum of the gaps on both sides of the punch in the lower mold. Keeping the best mold gap can ensure good punching quality and reduce burr and collapse, so as to prolong the life of die casting mold. So what should we do? We can check the situation of stamping waste to determine whether the die casting mold gap is appropriate. When the gap is too large, rough undulating fracture surface and small bright surface will appear, which will cause punching, curling and fracture, and even thin edge protrusion.
2. Utilizing mold cooling system
The use of a mold cooling system is one of the most powerful ways to prolong the life of a die casting mold. It has the potential to extend the mold’s lifetime while also improving its production performance. The mold steel has only small tolerance levels for high temperatures, so maintaining the proper temperature is critical. As the mold core is used at higher temperatures, cracks can easily develop on the surface.
The color of the mold core can also change as a result of this. It can also cause the release agents to become chilled, in addition to cracks in the mold surface. Cooling water can assist in decreasing the amount of time the release agent is used. It can also prolong the mold’s service life and ensure that the casted products are of high quality.
3. Timely grinding
Mold passivation without grinding for a long time will also cause damage to the die-casting mold and shorten the service life of the mold. Therefore, when the workpiece has excessive burr or abnormal noise when stamping, it may be mold passivation. At this time, the punch and the lower mold should be checked. When the edge of the punch is worn to produce an arc with a radius of 0.10 mm, it is necessary to grind. And the correct grinding method should be adopted.