What factors will affect the lifespan of plastic molds?

The service life of a mold refers to the total quantity of production that can be processed by the mold while ensuring the quality of the processed product parts. It includes the service life after multiple grinding of the working surface and replacement of vulnerable parts. Mingyang Yutong leads everyone to take a look at what factors can affect the lifespan of plastic molds?

What factors will affect the lifespan of plastic molds?

1. Mold structure
A reasonable mold structure helps to improve the bearing capacity of the mold and reduce the thermal and mechanical loads it bears. A reliable mold guiding mechanism can avoid mutual gnawing between the convex and concave molds; Cold piers and cold extrusion molds that withstand high-strength loads can prevent stress concentration by changing the cross-sectional dimensions.


2. Mold material
The lifespan of molds is closely related to their materials. The larger the quantity produced, the higher the load on the working time, and the higher the material requirements. Therefore, high-performance mold materials with strong load-bearing capacity and long service life should be selected.


3. Mold processing quality

The defects generated during the processing and heat treatment of mold parts can affect the lifespan of the mold. For example, the remaining tool marks on the mold surface, the micro cracks of Electrical discharge machining, the surface carburizing powder and decarburization during heat treatment and other out of stock depressions all affect the bearing capacity and life of the mold.


4. Mold working status

During the operation of an injection mold, it is necessary to frequently go through various processes such as mold closing, locking, injection, pressure maintaining, cooling, mold opening, and ejection. During this process, it is necessary to ensure the reliable and flexible operation of each working mechanism. Therefore, it is necessary to ensure that all moving parts move unobstructed and have reliable lubrication. The operator is required to regularly pay attention to the maintenance and upkeep of the mold to ensure it is in good working condition.


5. Product parts condition

The mechanical properties such as the surface quality state, Hardness and elongation of the defendant’s processed parts, and the dimensional accuracy of the processed parts are all directly related to the mold life. For example, when the nickel content is 80% in a special synthetic form, it is very easy to have a strong bite with the working surface of the mold, which will make the working surface bite and roughen, directly affecting whether the mold can work normally.

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