First, the material
When people buy locks, they are generally worried that the locks will not be durable or the surface will rust or oxidize. This problem is related to the materials used and surface treatment issues.
From a durable point of view, the best material should be stainless steel, especially as a surface material, the more bright it is. It has good strength, strong corrosion resistance and constant color. However, there are many kinds of stainless steel, which can be mainly divided into ferrite and austenite. Ferritic stainless steel has magnetic properties, commonly known as stainless steel. It takes a long time, and the environment is not good, it will rust. Only austenitic stainless steel will not rust. The identification method is very simple. It can be identified with a magnet.
Copper is one of the most widely used lock materials. It has good mechanical properties, good corrosion resistance and processing properties, and its color is beautiful. Especially for copper forged handles and other locks, the surface is flat, the density is good, and there is no air hole. Sand eyes. It is both strong and rust-proof. It can be used for plating various surface treatments such as 24K gold or gold, which is magnificent, noble and generous, adding a lot of color to people's home. Zinc alloy materials have much lower strength and rust resistance, but have the advantage of being easy to make parts with complex patterns, especially for pressure casting. The locks of the more complicated patterns seen in the market are likely to be made of zinc alloy, and consumers should carefully identify them. Steel, good strength, low cost, but easy to rust, generally used as the internal structural material of the lock, not suitable for external decorative parts. Aluminum or aluminum alloy, ordinary aluminum alloy (except aerospace) is soft and light, and the material strength is lower, but it is easy to form.
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 to cover or form a protective film on the surface of the part. The film mainly acts as a preservative, and at the same time increases the aesthetics and durability of the product, which is an important factor for directly measuring the quality of the product. Common methods for measuring surface treatment include: thickness measurement of the cover layer, joint force inspection, salt spray and moisture test, and visual inspection. The coating is applied by methods such as film adhesion, hardness, moisture test, and visual inspection.
Third, the lock purchase and daily maintenance knowledge 1, regardless of the choice of high-end or low-end lock products, should consider the choice of high-profile, stable quality, good after-sales service companies. Don't look at the price one-sided, you should go to the regular store to buy.
2. When selecting a lock, first pay attention to selecting the lock that is consistent with the opening direction of the door, which makes the switch door more convenient. Secondly, pay attention to the width of the door frame. Under normal circumstances, the ball lock and the handle lock can not be installed on the door less than 90mm. The width of the frame around the door should be 60mm or more and 100mm or less. The ordinary ball lock 60mm lock tongue should be selected; 100mm or more. A large cover, that is, a lock with a 70mm bolt can be used. In addition, the thickness of the door and the lock are also an important option. In short, the door should be locked.
3. When purchasing, first check whether the logo and logo of the purchased product are complete (including the product's implementation standard, grade, manufacturer's name, address, production date). Whether the package is firm, the contents of the manual are consistent with the product, and be careful. Exaggerated and inconsistent with the facts.
4, in the choice of materials can be used to "see", "掂", "listen" to master. Look at the color of the appearance, the lock made of pure copper is generally polished and matte, compared to copper plating, the color is dark, but very natural. Its weight, pure copper locks feel heavy, while stainless steel locks are significantly lighter. Listening to the sound of its opening, the copper-plated lock is quieter and the sound of the stainless steel lock is crisp.
5. Observe the appearance quality of the product, including whether the lock head, the lock body, the lock tongue, the handle and the panel parts and related accessories are complete, whether the surface color of the plated parts and the painted parts is bright and uniform, whether there is rust, oxidation signs and damage. .
6. Check whether the function of the product is reliable and flexible. Two or more products should be selected for comparison check.
When people buy locks, they are generally worried that the locks will not be durable or the surface will rust or oxidize. This problem is related to the materials used and surface treatment issues.
From a durable point of view, the best material should be stainless steel, especially as a surface material, the more bright it is. It has good strength, strong corrosion resistance and constant color. However, there are many kinds of stainless steel, which can be mainly divided into ferrite and austenite. Ferritic stainless steel has magnetic properties, commonly known as stainless steel. It takes a long time, and the environment is not good, it will rust. Only austenitic stainless steel will not rust. The identification method is very simple. It can be identified with a magnet.
Copper is one of the most widely used lock materials. It has good mechanical properties, good corrosion resistance and processing properties, and its color is beautiful. Especially for copper forged handles and other locks, the surface is flat, the density is good, and there is no air hole. Sand eyes. It is both strong and rust-proof. It can be used for plating various surface treatments such as 24K gold or gold, which is magnificent, noble and generous, adding a lot of color to people's home. Zinc alloy materials have much lower strength and rust resistance, but have the advantage of being easy to make parts with complex patterns, especially for pressure casting. The locks of the more complicated patterns seen in the market are likely to be made of zinc alloy, and consumers should carefully identify them. Steel, good strength, low cost, but easy to rust, generally used as the internal structural material of the lock, not suitable for external decorative parts. Aluminum or aluminum alloy, ordinary aluminum alloy (except aerospace) is soft and light, and the material strength is lower, but it is easy to form.
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 to cover or form a protective film on the surface of the part. The film mainly acts as a preservative, and at the same time increases the aesthetics and durability of the product, which is an important factor for directly measuring the quality of the product. Common methods for measuring surface treatment include: thickness measurement of the cover layer, joint force inspection, salt spray and moisture test, and visual inspection. The coating is applied by methods such as film adhesion, hardness, moisture test, and visual inspection.
Third, the lock purchase and daily maintenance knowledge 1, regardless of the choice of high-end or low-end lock products, should consider the choice of high-profile, stable quality, good after-sales service companies. Don't look at the price one-sided, you should go to the regular store to buy.
2. When selecting a lock, first pay attention to selecting the lock that is consistent with the opening direction of the door, which makes the switch door more convenient. Secondly, pay attention to the width of the door frame. Under normal circumstances, the ball lock and the handle lock can not be installed on the door less than 90mm. The width of the frame around the door should be 60mm or more and 100mm or less. The ordinary ball lock 60mm lock tongue should be selected; 100mm or more. A large cover, that is, a lock with a 70mm bolt can be used. In addition, the thickness of the door and the lock are also an important option. In short, the door should be locked.
3. When purchasing, first check whether the logo and logo of the purchased product are complete (including the product's implementation standard, grade, manufacturer's name, address, production date). Whether the package is firm, the contents of the manual are consistent with the product, and be careful. Exaggerated and inconsistent with the facts.
4, in the choice of materials can be used to "see", "掂", "listen" to master. Look at the color of the appearance, the lock made of pure copper is generally polished and matte, compared to copper plating, the color is dark, but very natural. Its weight, pure copper locks feel heavy, while stainless steel locks are significantly lighter. Listening to the sound of its opening, the copper-plated lock is quieter and the sound of the stainless steel lock is crisp.
5. Observe the appearance quality of the product, including whether the lock head, the lock body, the lock tongue, the handle and the panel parts and related accessories are complete, whether the surface color of the plated parts and the painted parts is bright and uniform, whether there is rust, oxidation signs and damage. .
6. Check whether the function of the product is reliable and flexible. Two or more products should be selected for comparison check.
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