Padlock

Padlocks in many categories, in all occasions on the padlock requirements are not the same, ordinary families generally with anti-theft door locks, high security and the price is cheaper; in some high-end places, confidential institutions will use the password lock, fingerprint lock, High, expensive; many public places are using glass doors, so the use of glass doors will be more extensive.
The quality of the lock is directly related to our life and property safety issues, so we need attention. And many people in the purchase of locks, are more worried about the lock is not durable, or the use of the process easy to rust, in fact, as long as we choose the material on the purchase, you can avoid the emergence of this problem.
Making the four materials of the door lock
stainless steel
From the point of view of durability, the best material should be stainless steel, especially for surface materials, the more the more bright. Its strength is good, corrosion resistance, color unchanged. But there are many kinds of stainless steel, can be divided into ferrite and austenite. Ferritic stainless steel magnetic, commonly known as stainless steel iron, a long time, the environment will not rust, only austenitic stainless steel will not rust, identification method is very simple, with a try to identify the magnet.
Copper
Copper is one of the most widely used lock materials, its mechanical properties, corrosion resistance and processing performance are good, and the color is bright, especially the copper forged handle and other lock ornaments, the surface smooth, good density, Trachoma. Both solid and rust, can be used to plated 24K gold or gold and other surface treatment, look magnificent, noble and generous, to the people to add a lot of color home.
Zinc alloy material
Zinc alloy material, its strength and anti-rust ability worse, but its advantage is easy to make complex patterns of parts, especially the pressure casting. The market see more complex patterns of locks are likely to be zinc alloy to do, consumers should be carefully identified. Steel, strength is better, lower cost, but easy to rust, generally used as a lock internal structure of the use of materials, not for external decoration pieces. Aluminum or aluminum alloy, ordinary aluminum alloy soft and light, the material strength at the end, but easy to shape.
Surface treatment quality
In addition, the purchase of locks can not ignore its surface treatment quality, surface treatment is refers to the use of metal electrodeposition, painting, chemical oxidation or other processing methods in the surface of the parts covered or form a protective film. The film mainly from the anti-corrosion effect, but also increase the aesthetic and product durability, is a direct measure of product quality is an important factor. Common methods of measuring surface treatment are: cover with thickness measurement, combined force inspection, salt spray and wet test, visual inspection and so on. The coating is carried out by coating adhesion, hardness, moisture test and appearance inspection and other methods.