Vacuum electroplating electric heating tube aluminum alloy blank

Vacuum electroplating electric heating tube aluminum alloy blank

(Aluminum alloy film) The aluminum alloy blank is a molded product after die casting. If it is not treated with a film, it is easy to turn white or black. The film is a phosphating passivation processing method, which can prevent aluminum alloy products from curing, salt The service test can reach 100 (aluminum alloy film) hours.

In addition: when the aluminum alloy blank is die-casting, the surface will be covered with mold release and other coverings. Although it has been vibrated or sandblasted, it needs to be processed twice, and then there will be oil stains to be treated, and it will be very dry after making the film. clean, and anti-nutrients.

The general material of vacuum electroplating electric heating tube wire terminal is brass or copper

The general material of the wire terminal is brass or copper. In addition to being easily oxidized in the air, copper is also easily reacted with sulfide in the air to form black copper sulfide, which increases the contact electrons or produces copper (Suzhou tin plating) green in a humid environment. Fault.

There are also several plating layers that can be selected, such as gold plating, nickel plating, silver plating, and tin plating. Gold plating is expensive, only high-end products are used. Although silver plating has good weldability, it also suffers from oxidation and sulfide blackening. Nickel plating is optional, the usage rate is also higher, and the weldability is slightly worse. Tin plating takes into account the advantages of solderability, sulfide resistance and oxidation resistance, and can not change color for a long time in the air, so it is widely used.

The vacuum electroplating electric heating tube is seriously oxidized and can be activated first

1. The bonding force, electrical conductivity, flatness, and whether there is any residue on the surface of the electroplating substrate must be considered. Many people often ignore this point, resulting in extremely poor electroplating effect;

2. If the oxidation is serious, it can be activated first. If there are residual stains, then the pre-cleaning treatment should be carried out first, and then the electroplating should be carried out after cleaning. Otherwise, the coating will be unstable and discolored.

www.superbheater.com