Sliding door selection knowledge
1, border material:
Generally, the thickness of the frame profile should reach 1.2 mm- 1.5 mm, so that the maximum height of the sliding door can reach 2.8 meters without shaking, which is relatively stable. If the wall thickness is less than 1.2, some of them are only 0.8 mm or 1.0 mm, and the maximum height can only be less than 2 meters. If it is too high, it will shake and cause problems easily. The thickness determines the price of the profile, and the cost is relatively high, which also determines the firm performance of the sliding door.
The surface treatment of frame profiles can be divided into three categories: alkali sand, painting and electrophoresis. Among them, electrophoresis has the best technical level, and the other two are easy to fade and paint. The surface treatment of electrophoresis is very smooth, and the outline of the frame with black walnut color is the easiest to see. The black walnut pattern on the surface of electrophoresis process is delicate and uniform in color, but the pattern is fuzzy and uneven in distribution when painting, especially the paint in the middle of the profile is particularly thick and the pattern is more blurred.
Profile composition: Al-Mg alloy, carbon steel and aluminum alloy. Aluminum-magnesium alloy is an exclusive material in aviation field, which has the advantages of light weight, high strength, oxidation resistance and corrosion resistance, but the price of its profile is much higher than that of ordinary profile, while ordinary household aluminum alloy doors and windows are easy to corrode and have low strength, and will be deformed when handled. Part of js is made of carbon steel profiles made of inferior cold-rolled steel plates, the thickness of which is less than 1mm, and the strength and anti-oxidation process are not ideal.
2. Roller: generally installed at the bottom of the sliding door. A roller is roughly divided into two parts, one is the bearing and the other is the outer coating of the bearing.
The quality of bearings plays a key role in the durability of sliding doors. A good sliding door adopts imported light steel ball bearings, and the manufacturer and product model are marked on the bearings. There is a sign on the bearing side, and the outer steel sleeve has and should have its own company logo. Although there are bearings, but there are no signs such as manufacturer's name, such bearings have poor wear resistance and short service time. When the poor roller was first installed, the pulling effect was similar to that of the good roller (which most people can't feel), but it was obviously different after half a year. Poor wheels have poor wear resistance, are prone to noise, are stiff when pulled, and are easy to jump. Generally, the lower pulley is hidden, so it is best to see the pulleys on both sides of the door.
There are several kinds of bearings: one is glass fiber composite material, and the other is ordinary plastic or rubber, which has poor wear resistance. The aging resistance and wear resistance of glass fiber are much better than those of plastic and rubber, and it will not affect the sliding of sliding doors if it is used for a long time.
Good bearings and outer cladding can make the sliding door slide100000 times or more, ensuring long-term use. The poor can't guarantee how long it will take.
3, look at the brand: Now many dealers are imported from a certain country, and the technology of a certain country can distinguish the authenticity. The simplest thing is to look it up online. Brand sliding doors have independent websites, dealer addresses in various regions and other related information. When searching with Google and Baidu, there are also brand-related information, such as brand group purchase information (if any, you can compare the prices of dealers in this area to see if they are higher or lower than those in other places). Generally, self-employed individuals process their own materials, but after using materials from some countries, they can't find any relevant materials on the website, and the brand awareness can be seen in 1.
4. After-sales service: Brand sliding doors will have relevant quality warranty cards when they are sold, and indicate the warranty scope and duration. Some self-employed people promise not to issue relevant warranty cards, and maintenance will be very troublesome in the future.
5. Whether the procedures are complete: The general brand js has the authorization letter from the head office, a copy of the business license, legal person qualification, etc. And high-end brands have relevant inspection reports (such as inspection reports of rollers and sliding doors). ), and the quality of the sliding door can be seen indirectly through the inspection report. Many foreign brands of moving shops, if there is no power of attorney, must be fake. Others can check whether the trademark is registered. How can a company without a registered trademark be a foreign brand?
The other thing is to see the feeling. A good sliding door is smooth, without noise and impurities, calm but smooth, but the difference is that there is noise and a sense of jumping. You can pull a few more doors to see if the js store is neat and clean, and whether the service is warm and professional. A js that doesn't even clean the shop can't make a high-quality sliding door for you.