Lock is the most important security component of ordinary family. Because of the increasing theft of crowing or unlocking, people pay more attention to lock. So, how to pick out a safe, easy-to-use, solid and durable lock? Li'an's unique product advantages are leading in the domestic copper padlock industry, which embodies the concept of Li'an copper padlock developers to the product - Li'an electric intelligent copper padlock brings users not only a simple anti-theft measure, but also a safer, more comfortable and more convenient enjoyment, providing users with a completely own and confidential space.
Method / step:
1. Look at the materials
The lock materials in the market are basically stainless steel, copper, zinc alloy, iron steel and aluminum. Stainless steel with good strength, strong corrosion resistance and constant color is the best lock making material; copper is relatively universal, with superior mechanical performance and high price; high quality zinc alloy is solid and wear-resistant, with strong corrosion resistance and easy to form, which is generally used to make mid-range locks.
2. Surface treatment
General surface treatment includes electroplating, spraying and coloring. Through these surface treatment, a protective film can be formed for the product, which can prevent corrosion and rust, make the product more beautiful and durable, and directly measure the quality of the product. The locks with good quality are generally electroplated. The coating is moderate, very uniform, bright in color, without bubble, rust and oxidation.
3. Functional design and key components
There are many kinds of locks. The choice of locks depends on where they are used. Big brands with high quality requirements have very detailed product classification according to different functional requirements, such as channel lock, bathroom lock, storage room lock, door lock, etc. Look at the implementation of foreign standards for hardware locks are very strict standards, so the quality of imported products is relatively superior.
Matters needing attention
At present, the Ministry of light industry has used some foreign standards for reference to revise the original GB into the current QB with higher requirements. In order to save cost, small manufacturers do not follow the standard, but big brands will follow the standard when they produce products.
Buying tips to choose high-profile, good quality, a long history of big brands, small manufacturers are often through some agents or shops direct sales, no strength and stability of the system network to do after-sales service. According to their own economic capacity and practical use. Different locks are designed for different houses and doors. Villa and apartment locks have high requirements and prices. However, it is not necessary to use such expensive locks for ordinary houses. Generally, stainless steel, copper or thickened high-quality zinc alloy locks are used for entrance doors, while high-quality zinc alloy locks are beautiful, durable and economical.
At the time of purchase, you can also weigh, feel and listen to the voice. It's the same as picking up a faucet. It's also called stainless steel, pure copper or zinc alloy. Some small brands will cut corners and use hollow materials and inferior materials to make them. Such materials are light, with poor hand feel and dull voice. Good locks are the opposite.