The quality of the lock differential lock

Zinc alloy material, its hardness and anti-rust ability is poor, thick plating is also easy to fade to black and rot blistering, but its advantage is easily made ??into complex patterns of parts, especially the pressure casting. Market seen in the more complex pattern lock is very likely is zinc alloy, consumers should be carefully identified.

Steel, good strength, low cost, but easy to rust, normally used to lock the internal structure of materials, are not suitable for the external trim.

Aluminum or aluminum alloy, aluminum alloy (aerospace excluded) soft and light, the strength of the material than the end, but the easy forming.

Copper is the most widely used one of the locks material, its mechanical properties, corrosion resistance and processing properties are good, and the color is gorgeous, especially copper forged handle and lock trim, smooth surface, good density, nonporous, trachoma. Both solid and rust-proof, can be used to plating the surface of real gold or gold dust and other processing, looked magnificent, noble and generous, add color to people's home.

From a durable point of view, the best materials should be stainless steel, is used as a surface material, the more you use the more bright. Its strength, strong corrosion resistance, the same color. But stainless steel is also a variety, can be divided into ferrite and austenite. Ferritic stainless steels are magnetic, commonly known as stainless steel iron, a long time, the poor environment will rust present, only 304 stainless steel is the best stainless steel materials.

(Source: electric roller shutter doors , http://www.shdayu.net )

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