Analysis of Process Technology for Prolonging the Service Life of Aluminum Moulds

Because the texture of aluminum is relatively soft, if the surface coating is not used, it is easy to be worn by the plastic, which accelerates the degree of damage, thereby changing the gloss of the injection molded part. The electroless nickel coating can increase the mold surface by 50RC, which is sufficient to protect and extend the gloss and structure of the mold surface. In order to be able to produce decorative parts by injection molding, in addition to prolonging the service life of the mold, the manufacturer also hopes that the surface of the aluminum mold can maintain a certain degree of gloss. Therefore, it is recommended to use a non-plating nickel spraying process, because This method helps to extend the life of the mold surface finish, making it relatively easy to produce decorative parts.

On the other hand, this process saves a lot of time and cost. Under normal circumstances, aluminum also brings a variety of different defects, but they are often invisible to the naked eye, and can only be clearly seen on injection molded parts, which will inevitably lead to waste of materials and return The time for the test bench to re-test to analyze and correct the problems that arise. The electroless nickel coating will help eliminate or minimize these defects before the mold is put into production. (Guide: Briefly describe the main characteristics of PCD grinding processing)

If corrosion is a concern, then the use of nickel-PTFE coatings, boron nitride nickel coatings and electroless nickel coatings will have the best anti-corrosion effect. After using any of the above-mentioned engineering coatings, there is no need to spray other protective and anti-corrosion coatings on the mold during the shutdown period. At 50RC, the directly sprayed electroless nickel coating can play a general anti-wear protection function, but it can be best protected by PVC gas; at 50RC, the nickel-PTFE coating has a protective effect on wear and tear. Medium protection, and can improve lubricity, and play a good anti-corrosion effect; while the boron nitride nickel coating has excellent wear protection at 54RC, but also has good mold release performance and anti-corrosion protection .

It should also be pointed out that there are different grades of aluminum, and different treatment methods are needed to ensure that it has proper adhesion to any electroplating material. Therefore, it is always useful to know your substrate, or find a well-equipped electroplating distributor to provide you with an analysis. This ensures that you can achieve the best adhesion on the slide plate, mold closure, parting line and other mold components.

There is no doubt that the long-term use of aluminum molds for injection molding production will continue, and there will undoubtedly be a series of more novel aluminum alloy materials to adapt to and meet the production and production of different molds. Application requirements. No matter what happens when you follow this principle, there is always an engineered coating that can be used to improve the quality of the product and extend the service life of the mold. This is a very simple matter. The distributors who provide plating services have a lot of experience And resources can help people realize this wish.

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