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The surface treatment method of die casting for sanitary ware

Updated: Jun 16, 2020

Most of the sanitary ware products after die-casting molding or machining also need to be polished and polished or after a variety of surface treatment addition and for a good finished product.

So, what surface treatment method is used most often for our sanitary ware products? What surface treatment method and means do we need to use to provide clean and clean for different sanitary ware products after all is most appropriate? It needs to combine for different product base materials, different customer requirements, different grades of positioning, different surface treatment processing production costs and other factors to make appropriate choices.

The surface treatment method that defend sanitary ware product industry USES most often has the following kind roughly:

1. Paint processing:

This is one of the most familiar kind of treatment method, low cost, simple treatment process, it is through the spray gun and with the aid of air pressure, scattered into a uniform and fine droplets, coating applied on the surface of the sanitary ware pieces of a kind of method. It can be divided into air spray, airless spray paint, as well as the method of electrostatic spray painting. Lacquer, it is to have certain toxicity normally, has certain effect to the body, the paint of different brand because of composition content different toxicity also is different. Special attention should be paid to safety when using, avoid inhalation and skin contact.

. Electroplating:

Electroplating is to use the principle of electrochemistry to lay a layer of metal on the sanitary ware. In addition to copper, iron, zinc alloy, aluminum alloy and other conductive materials, ABS plastic sanitary ware can also be processed by electroplating.

It includes water electroplating processing and vacuum electroplating processing, sanitary ware and sanitary ware with water electroplating processing method is the most common, especially nickel and chromium plating processing for the most. Generally we say electroplating is water plating processing, and vacuum plating is called coating.

3. Electrophoresis:

It is electrophoretic paint, electrophoretic paint is the electrophoretic coating at the Yin and Yang poles, under the effect of applied voltage, the coating ions with charge are moved to the surface of the sanitary ware product, and the product surface produced by the alkaline action to form insoluble matter, these substances it deposited on the surface of the product.

4. Spraying:

Plastic spraying is a kind of surface treatment method that plastic powder is sprayed on sanitary ware. That is to say electrostatic powder is sprayed coating, this is to use electrostatic generator to make plastic powder electrify, adsorb the surface that provides the product in our wei yu clean, pass high temperature to bake next, make powder melt a kind of surface treatment method that sticks to the surface of the product.

5. Surface oxidation:

It refers to iron, aluminum products through oxidation treatment on the surface of the formation of protective oxidation film, oxidation treatment methods are alkaline oxidation method, non - alkali oxidation method and acid oxidation method.

6. Phosphating

Phosphating is a process of chemical and electrochemical reaction to form phosphate chemical conversion film, which is called phosphating film.

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