First, materials

People buy locks, the general are worried about the lock is not durable or not long before the surface will rust or oxidation. This problem is related to the use of materials and surface treatment problems.


From a durable point of view, the best material should be stainless steel, especially for surface materials, the more the more light. Its strength, corrosion resistance, color unchanged. However, there are a variety of stainless steel, can be divided into ferrite and austenite. Ferritic stainless steel is magnetic, commonly known as stainless steel iron, a long time, the environment will not rust well, only austenitic stainless steel will not rust, identification method is very simple, you can use a magnet to identify.


Copper is the most widely used one of the lock material, its mechanical properties, corrosion resistance and processing performance are good, and bright color, especially forged copper handle and other decorative locks, the surface formation, density, Trachoma. Both solid and rust, can be used to plated 24K gold or gold and other surface treatment, appears magnificent, noble and generous, to add a lot of color to people's homes.


Zinc alloy material, its strength and anti-rust ability worse, but its advantage is easy to make complex patterns of parts, especially pressure casting. More complex patterns seen in the market of the lock is very likely to do zinc alloy, consumers should carefully identify.


Iron and steel, better strength, lower cost, but easy to rust, the general internal structure for the lock material used, not for external decorative pieces.


Aluminum or aluminum alloy, ordinary aluminum alloy (except for aerospace) soft and light, the material strength than the end, but easy to shape processing.


Second, surface treatment


Surface treatment refers to the use of metal electrodeposition (commonly known as electroplating), painting (called spraying), chemical oxidation (coloring) or other processing methods in the surface of the parts cover or form a protective film. The film mainly from the anti-corrosion effect, but also increase the appearance and durability of the product is a direct measure of product quality is an important factor in the pros and cons. Measure the surface treatment of common methods are: cover with thickness measurement, adhesion test, salt spray and humidity test, visual inspection. The coating is carried out coating adhesion, hardness, humidity test and visual inspection methods.


Lock the purchase and daily maintenance of small knowledge


First, we must first understand whether the product name, site, trademark and whether there is a professional quality inspection agencies recently issued a test report.


Second, the lock appearance should be clear, the surface is not rough, feel comfortable. Lock rotation to open, locking device should work, feel can not have the feeling of failure, confidentiality performance is better.


Third, when the material should be moderate to buy, feel to be solid, reliable, not to use inexpensive quality inferior times with a variety of materials manufactured locks.


Fourth, the installation of locks is also a key: the installation should be in strict accordance with product specifications, to recognize the installation center distance, the scope and the lock to open the method. Special attention should not be installed in the humidity of the wooden frame door to prevent the corrosion of harmful substances.


5, usually keep the lock body cleaning, to prevent foreign matter into the lock cylinder slot, causing the opening of the rolling, and even the lock can not be opened.


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