Most of the multi-layer solid wood composite floors are laid directly on the ground. The reason that the sound is generated after the flooring is laid is that when the people walk on the floor, the floor moves up and down, the sides and sides of the floor and the tongues and tongues and grooves. The friction between the sound produced. The up-and-down movement of the floor is the main factor. In many cases, the floor is not completely covered, and sound is generated some time after use or paving. When we accepted the complaint, many people were controversial about the looseness of the floor (the gap between tongue and tongue was too large).
If it is really loose, why is the floor just finished and it will only ring after a while. Even if it is a loose floor we put it flat on the flat marble floor, no matter how we walk on the floor will not produce noise, the reason is that the floor is in close contact with the ground, the floor does not move up and down when people walk, the floor There is no relative movement between the sides and the sides, between the tongue and the tongue and groove, there is no friction, and the sound naturally does not exist.
Therefore, the key to solving the problem of sound after floor covering is to solve people's stepping on the floor and ensure that the floor does not move up and down.
There are mainly the following reasons for the up and down movement of the floor (resounding sounds):
1, uneven ground
Due to the unevenness of the ground, after the floor is paved, gaps are created between the floor and the ground in individual places. During the walk, the floor moves up and down, producing a sound. Its characteristic is that after the floor is paved, people will immediately make noises when they walk around, and they are partial.
Take measures to measure the flatness of the ground before the floor is laid. The flatness should be less than 3mm/2000mm. If the ground does not meet the requirements, it should be leveled before paving.
2, there is insufficient reserved space around the floor pavement
Insufficient reserved space around the floor paving resulted in slight arching of the floor. There is a gap between the floor and the ground, and the sound is generated when people walk around. Its characteristic is that it does not ring after being paved. After a period of time, it buzzes over a large area, and the wall and floor are very tight. Take measures to leave gaps around the floor, especially in the entrance, wall kitchen, balconies and other areas to leave gaps to ensure that the reserved gap is uniform. When the pavement length exceeds 8m, it should be cut off and bridged.
3, moisture-proof membrane breathable
After the floor is paved, the damp proof membrane joints are not sealed with tape, and the moisture proof film in some places breaks during the pavement process, causing leakage of moisture on the ground, especially in the geothermal environment. The ground is damp and a lot of moisture enters the back of the floor, causing no The uniform expansion causes the floor to deform and twist slightly, creating a gap between the floor and the floor, producing a sound during the pedaling process. The characteristic of this type is that there is no sound after just paving, and after a period of time there is a large area of ​​sound, and there may be gaps between the wall and the floor. Take measures before the floor pavement, moisture-proof membrane joints must be sealed with tape to ensure airtight.
4. Symmetrical placement of indoor furniture (heavy objects)
After the floor is paved, because the furniture and the heavier items are symmetrically placed on both sides of the room, the floor is pressed. In the environment where the environment is wet, the floor absorbs moisture and expands. Because the two sides are pressed by the heavy objects, the floor cannot be shaken. , produce a regional drum kit. Causes floor noise in the area. Take measures to place heavy objects on one side as much as possible to ensure free movement on one side of the floor.
The sound of the floor is sometimes the result of a factor, and sometimes it is the result of a combination of several factors. Therefore, in order to prevent floor noise from occurring after paving, comprehensive measures and comprehensive prevention should be taken.
Flooring experience to talk about nature floor furniture marble room partition door
NSK manufacture a full range of deep groove ball bearings. These bearings are the most common type and are used in a wide variety of applications.
Single-Row Deep Groove Ball Bearings
Pressed Steel Cages
Single-row deep groove ball bearings are the most common type of rolling bearings. Their use is very widespread.
In addition to open type bearings, these bearings often have steel shields or rubber seals installed on one or both sides and are prelubricated with grease. Also, snap rings are sometimes used on the periphery. As to cages, pressed steel ones are the most common.
For big deep groove ball bearings, machined brass cages are used.
Machined cages are also used for high speed applications.
Extra Small Ball Bearings and Miniature Ball Bearings
Miniature and instrument ball bearings can be divided into two basic types, deep groove and angular contact. The first (deep groove) can be further divided into the following five classes depending on their design details:
Standard type
Flanged outer ring
Extended inner ring
Expanded type in which one ring has a radial thickness that is larger than normal compared with the bearing width.
Thin section type in which both rings are extra thin in the radial direction. They can also be classified as: open, shielded, or sealed.
Maximum-Type Ball Bearings
Maximum-Type ball Bearings contain a larger number of balls than normal deep groove ball bearings because of filling slots in the inner and outer rings. Because of their filling slots, they are not suitable for applications with high axial loads. types of bearings have boundary dimensions equal to those of single-row deep groove ball bearings of Series 6200 and 6300 respectively. Besides the open type, ZZ type shielded bearings are also available. When using these bearings, it is important for the filling slot in the outer ring to be outside of the loaded zone as much as possible. Their cages are pressed steel.
Nsk Bearing,High Temperature Bearings,Nsk Ball Roller Bearings,Nsk Ball Bearing
Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.longsbearing.com