Qihui News (http: //): How to choose safe and durable locks and purchase lock skills Locks are a relatively special commodity and have a very important relationship with safety. Therefore, whether it is domestic or foreign, the lock industry has a set of extremely strict quality standards and safety precautions. There are many types of hardware locks on the market today. As far as door locks are concerned, there are door locks, channel locks, bathroom locks, etc. according to their uses, and ball locks, handle locks, mortise locks, etc. So many forms of classification have both practicality and aesthetic conditions, but no matter what form of recommendation, the following points must be considered first when selecting a lock: 1. Features There are many types of locks on the market today. As far as door locks are concerned, there are door locks, bedroom locks, passage locks, bathroom locks, etc. according to their uses; ball locks, handle locks, mortise locks, deadlock locks, etc. are divided according to shape. Ball lock and handle lock have three functions: lock, handle and touch ball. A door handle must be installed for the lock. ①House door lock: It plays the role of insurance safety, so it is also called safety lock or anti-theft lock. ②Aisle lock: It acts as a door handle and a bead and has no insurance function. It is suitable for door locks in kitchens, halls, living rooms, dining rooms and children's rooms. ③Bathroom lock: The characteristic is that it can be locked inside and can be opened with a key outside the door. It is suitable for toilets or bathrooms. ④Bedroom lock: lock the inside of the insurance, the outside must be opened with a key, suitable for bedroom and balcony doors. The materials used for locks are mainly copper, stainless steel, zinc alloy, steel, aluminum or aluminum alloy. ①Copper: It is one of the most widely used lock materials. It has good mechanical properties, good corrosion resistance and processing performance, and has a bright color. Especially forged copper handles and other lock decorative parts, the surface is flat, the density is good, and there are no air holes. , Trachoma. ②Stainless steel: durable, brighter as you use it. It has good strength, strong corrosion resistance and unchanged color. ③Zinc alloy material: its strength and anti-rust ability are poor, the advantage is that it can be easily made into parts with complex patterns, especially pressure casting. The locks with more complicated patterns seen in the market are mostly made of zinc alloy. ④Steel: better strength and lower cost, generally with plating, but it is easy to rust. ⑤ Aluminum or aluminum alloy: ordinary aluminum alloy (except for aerospace) is soft and light, and the material strength is relatively low, but it is easy to form. 2. Choose Consumers should choose copper cores, but it should be noted that some of the cores are made of plastic, and only a "copper core" of copper is wrapped on the core head. The appearance of all-copper nickel plating and iron-nickel plating is almost the same, but the price is very different. Generally, all-copper copper is silent, and iron is not silent. Looking at the whole copper, the workmanship is fine, and the workmanship is rough. When the ball-shaped trivial installation, such as the eccentric core, is not installed in place, it is very prone to problems during use. Now there is a kind of backhand trivial, the handle can be trivially killed when the handle is gently lifted, which is very convenient, but it is easy to triviate the key in the house. Now, the fastest selling is the handle lock, the ball lock is outdated and generally not used. Relatively speaking, when turning the trivial, the lower the sound, the better. Turn the handle a little, and the trivial tongue should follow up. In terms of the shape of the key, the "pit" -shaped key accessory is more secure than the "teeth" -shaped key accessory. However, if the "pit" -shaped key is lost, you must go to the original factory. The greater the number of squares and tongues, the better the safety. Consumers should pay attention to the following points when choosing trivial products. ①The products of enterprises with high visibility, stable quality and good after-sales service should be selected. ② First check whether the purchased product packaging signs are complete (including product implementation standards, grades, production company name, address, production date), whether the packaging is firm, whether the contents of the manual are consistent with the product, and be careful not to exaggerate and do not conform to the facts phenomenon. ③ Observe the appearance quality of the product, including whether the lock head, lock body, lock tongue, handle and cladding parts and related supporting parts are complete, whether the surface color of the electroplated parts and painted parts is bright and uniform, and whether there are signs of rust and oxidation and damaged. ④Check whether the function of the product is reliable and flexible. You should choose two or more products for comparative inspection. Especially when you purchase a bidirectional lock product, you must use all keys to test the inner and outer locks separately. You should also check the product ’s insurance organization and recommend that you try at least three times for each lock. ⑤Select trivial items according to the usage environment, such as dry humidity, door structure, thickness, left or right door opening, inner or outer door opening, etc. ⑥ The mutual opening rate is the ratio of the mutual opening of the lock and the key. The fewer the locks opened by one key, the stronger the safety and reliability of the lock. Consumers should try to choose locks with a large number of key teeth when purchasing, because the more the key teeth, the greater the difference, and the lower the mutual opening rate of the lock. 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