The core of the sliding door - pulley: Attention to problems - the bottom wheel load capacity and flexibility The pulley is the most important hardware in the sliding door. At present, the pulleys on the market are made of plastic pulleys, metal pulleys and fiberglass pulleys. The plastic pulley has a hard texture, but it is easy to be broken. It will become awkward and hard when used for a long time, and the push-pull feeling becomes very poor. The metal pulley has high strength, but it is easy to generate noise when it is in contact with the track; the fiberglass pulley is tough and resistant. Good abrasion, smooth sliding and durable.
Track: Attention to problems - track positioning and damping devices High quality sliding door hardware is mainly reflected in the design and manufacture of the pulley system and track and the perfect combination of the two, the track is crucial. The quality of the track depends on the fact that it must have a curvature that can be matched with the pulley. It should be reminded that the good track is excellent in the strength design and the smoothness of the contact surface with the pulley, not the thicker the track wall, the better. At present, the track of the sliding door has two types of cold rolled steel track and aluminum alloy track. Rails are not always good. It should be said that good aluminum rails are superior to rails in some respects, especially in terms of noise immunity.
In addition, it is necessary to pay attention to whether the product has a stop block and an upper and lower rail positioning system, whether there is a glass anti-collision strip, whether the bearing type pulley is smooth and silent when pushed, whether a shock absorption system is placed in the bottom wheel, whether there is a door height adjusting device, etc. .
Door frame and door panel: Attention to problems - door frame material and door panel thickness Currently, the frame materials used in sliding doors on the market are carbon steel materials, aluminum-titanium alloy materials, etc., among which aluminum-titanium alloy materials are the most durable; secondly, the thickness of door panels, sliding doors For the wood board, it is best to choose 10mm or 12mm thick plate, which is stable and durable when used. The thickness is less than 8mm, it will appear thin and light; the door panel with thickness less than 6mm is easily deformed and it is difficult to meet the requirements of normal use.
Sealing: Pay attention to the problem - the door spacing is no more than 5 mm. In order to ensure that the two doors are staggered and closed, all sliding door products will have a gap. The general external pulley needs a spacing of 15 mm, which affects the sealing of the sliding door. In particular, Beijing has a lot of wind and sand, and there are many opportunities for dust.
Although most products have tops, the gap between the tops used in different products and the gap size is still relatively large. Try to choose products with small spacing and tight tops. Just like the German aunt sliding door, the spacing is only 5 mm. Adding the high-density tops basically eliminates the intrusion of dust.
Service life: Attention to problems - the key factor affecting the service life of the sliding door is the pulley. The design of the big brand's pulleys is about 15 years, and the pulleys of some counterfeit products may break down in 2-3 months, which seriously affects the use of sliding doors.
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