Aluminum products electroplating process technology

【China Aluminum Industry Network】 After the pre-treatment preparation of the electroplating on the aluminum product is completed, it is possible to enter the electroplating process on the aluminum.

Regardless of which pre-treatment method was selected, the previous process to enter electroplating after treatment before completion is flash copper plating.

(01) Flash copper

Currently suitable for flash copper plating bath is cyanide copper plating technology.

After the end of flash copper plating, it must be fully cleaned and activated. Activated with 1% to 3% sulfuric acid solution. Assume that the subsequent electroplating is acid copper plating or nickel plating. After activation, it can be directly grooved without washing. plating. Assuming that other alkaline baths, especially cyanide baths, are plated, the bath must be electroplated after tanking after two passes.

(02) Middle Plating

After the flash copper plating, the plating process of the intermediate plating is carried out according to the requirements of product planning or technology. The middle plating can also be said to be the bottom plating, and the flash copper plating is only accepted for the purpose of guaranteeing the loose talent and connection power. Technical coating, to reach the product of the plating requirements, according to the final coating of the surface to choose the middle coating. For example, copper plating, dark nickel plating, or other plating or technology that can be used as an intermediate or bottom plating. Assuming that the surface plating is silver plating, it is necessary to properly thicken the plating after flash copper plating. For example, acid bright copper plating is used, and it must be flash-plated with silver (or electroless silver plating) before it enters into the surface. Plating. In the general technology introduced in this chapter, copper plating, nickel and other technologies can be used as the intermediate plating on aluminum plating.

(03) Surface Coating

The surface plating is also intended for electroplating on aluminum, which can be a decorative coating or a functional coating. For electroplating, most of the electroplating on aluminum is a functional coating, and a few exterior parts have the function and decoration effect. The plating for pure decoration is limited to handles, knobs, signs, etc. on the frame.

Calcium Chloride, CaCl2,also named Calcium Chloride Anhydrous , Calcium Chloride Dihydrate 74%, Calcium Chloride 77%.  is a common salt. It   behaves as a typical ionic halide, and is solid at room temperature. It has several common  applications such as brine for refrigeration plants, ice and    dust control on roads, and in concrete. It can be produced directly from limestone, but large amounts are also produced as a by-product of the Solvay process. Because of its hygroscopic nature, it must be kept in tightly-sealed containers.

Specifications:

Product description:

 Usage:

1.   Used in highway, expressway, parking lot and port and as a dryer to dry nitrogen, oxygen, hydrogen, hydrogen chloride and sulfur dioxide etc.

2. Act as dehydration agent when producing alcohol, ester, ether and acrylic acid.

3. Calcium chloride is a kind of important cryogen used by freezing machine and when making ice.

4. It can increase hardness of concrete and increase cold resistance ability of the construction.

5. In port, acts as fog removing agent and dust collecting agent on road and fireproof agent of textile and acts as a protective agent and refining agent used in aluminum magnesium metallurgy.

6. Act as precipitator in producing lake paint. It is a kind of raw material of producing calcium salt. In algae sodium and bean industry it acts as flocculation.

7.Used for oil drilling.

Calcium Chloride

Calcium Chloride,Calcium Chloride Powder,Calcium Chloride Granular,Anhydrous Calcium Chloride

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