Surface treatment for aluminum gravity casting

Various kinds of surface treatment available for aluminum gravity castings. Aluminum gravity casting can be available for various kinds of surface treatment such as polishing, painting, stove varnishing, powder coating , plating ,electrophoresis, Nano coating, anodizing and so on. Those surface treatments are normally for corrosion resistance and surface decoration purpose. Of course the cost of each type of surface treatment depends on different effect of those surface treatment.

HH aluminum gravity casting foundry has rich experience in handling certain surface treatment for aluminum gravity cast products. We know how to control the final surface treatment effect from the very beginning of alloying and casting. And all those different surface treatment can be sourced from the factories nearby. We had already established good relationship with several professional surface treatment partners. HH aluminum gravity casting foundry is aiming to offer one stop service for aluminum gravity casting project including any post surface treatment.

sand core injeciton workshop gravity casting workshop

Various kinds of surface treatment for aluminum gravity casting

1. Polishing for aluminum gravity cast products. polishing is the common surface treatment for aluminum casting products. If we can get the material in control and keep the porosity into minimum, the polishing process can be easy to control. And some gravity cast parts are good for mirror polishing which are popular for aluminum decorating products.

2. Painting for aluminum gravity casting. Painting is another common and economical surface treatment for aluminum gravity cast products. Painting can be classified as wet spray painting, stove varnishing and lacquering. Wet spray painting is simple to paint the aluminum gravity casting and let it dry by nature. Stove varnishing and lacquering can the same by baking. Stove varnishing can achieve different color and art texture but the lacquering can only achieve the unique color at one time.

3. Powder coating for aluminum gravity casting. There are two kinds of powder coating process available for aluminum gravity cast parts. The simple one is by manual or semi automatic and the advanced one is done by completely automatically. The powder coating can achiever good corrosion resistance for aluminum gravity cast products with the purpose of decoration.

4. Plating for aluminum gravity cast products.Electro plating includes zinc plating, chrome plating and nickel plating. Zinc plating is the most cheap one for aluminum gravity casting simply for corrosion resistance purpose. Chrome plating and nickel plating are both expensive for aluminum gravity casting. Besides, all these three electro plating process should be done in certain area we called plating zone.

5. Electrophoresis is an economical and common surface treatment for aluminum gravity cast auto parts. Currently there are quite a serial of gravity cast auto spare parts required for electrophoresis. The process here can only achieve black color for mass production, since changing color for small batch will lead to extreme high cost.

6. Anodizing is popular for aluminum surface treatment. However, for aluminum gravity cast products, we now can only apply black hard anodizing, because of its high silicon content. Black hard anodizing can achieve high corrosion resistance and are popular for medical appliances.

7. Nano coating is to spray a nano film onto the aluminum part's surface to achieve unique surface protection effect. The aluminum gravity cast products processed by Nano coating is particularly good for protect aluminum parts from raining and water effecting.

aluminium gravity casting technique database of SXLH

  1. Gravity casting capacity of HH aluminium casting.
  2. Testing equipments for gravity casting
  3. Range of gravity casting made by HH aluminium casting
  4. Chemical and mechanical property of aluminium gravity casting
  5. China national designation of aluminium casting alloy
  6. Conversion sheet of aluminium casting alloy designation of various countries
  7. General tolerance of aluminium gravity casting

FAQ's of aluminium gravity casting

  1. What is aluminium gravity casting?
  2. What is the difference between green sand casting and gravity casting?
  3. How to choose aluminium gravity casting?
  4. How to choose desired casting between gravity casting and green sand casting?
  5. How many types of aluminium gravity casting?