The overall wardrobe is also known as the wall-mounted wardrobe, custom closet, and cloakroom. As people's living standards continue to improve, the overall wardrobe has become an important part of modern home decoration. Due to the tailor-made wardrobe, the factory is more professional, environmentally friendly, space-saving, economical and practical, and wins the traditional woodworking site and finished wardrobe.
The most important part of the overall wardrobe is the board, its quality directly determines the quality of the wardrobe. Therefore, before purchasing the whole wardrobe, you must fully understand all kinds of plates, so as not to be fooled by the business. What is the overall wardrobe plate? Buying wardrobe plates should be optimistic
Demystifying the true face of all kinds of plates
The panels on the market are really solid wood, mainly including wood board, particle board, fiberboard, solid wood particle board, solid wood finger joint board and multi-layer solid wood board. Next today
The true face of these 6 types of plates will be unveiled for everyone. Wood board
Wood board, commonly known as large core board, is a plywood with a solid wood core. The core sheet has a high bending strength and a relatively low bending strength. Most of the market is now solid, glued, double-sided sanding, five-layer blockboard, which is one of the most commonly used plates in decoration.
These plates have good screw strength, high strength, and are characterized by firmness, sound absorption and heat insulation. The water content is not high, between 10% and 13%, the processing is simple and the most widely used. Due to the large use of urethane glue in the production process of wood board, the formaldehyde emission is generally high and the environmental protection is not good. Particle board
Particleboard is a piece of buds, small-diameter wood, fast-growing wood, wood chips, etc., which are cut into certain specifications, dried, mixed with rubber, hardener, water repellent, etc., and pressed at a certain temperature and pressure. A wood-based panel is called a particle board because its section is similar to a honeycomb.
The surface of the particle board is flat, the texture is realistic, the weight is uniform, the pollution is resistant, the aging resistance is more beautiful, the paint and various veneers can be applied, and the sound absorption, sound insulation and heat insulation effect are good, and the moisture resistance is strong. The amount of glue used in production is small and the environmental protection is good. Solid wood particle board
Solid wood particle board
The so-called solid wood particle board is actually a kind of board produced by the process of particle board. It is a kind of particle board, also called oriented structure particle board. It is a kind of small diameter material, thinned wood, wood core, board skin, branch wood and so on. A wood-based panel that has been heat-pressed after being processed into a different size of flaking by special equipment, drying, sizing and special equipment.
This type of sheet is dried by an advanced single-channel dryer. The expansion coefficient is small and the moisture resistance is very good. The flank is oriented layered, so its internal internal texture is uniform, compared with ordinary particle board and powder. The MDF has strong nail holding force, bending resistance and stability. Such panels are widely used by European and American furniture manufacturers as high-grade environmentally friendly substrates. MDF
Fibreboard, also known as MDF, is made from plant fiber as the main raw material, through hot grinding, sizing, paving, hot pressing and other processes. The fiberboard has a density, the low density board fiberboard below 450kg/m3, the medium density fiberboard of 450-880 kg/m3, and the hard fiberboard above 880 kg/m3.
This plate retains the original fiber, is pressed at high temperature, has good surface flatness, fine material and good stability. It can be easily shaped and milled. Its strength and hardness are better than particleboard, but it is not resistant to blisters. The amount of expansion is about 2mm on one side, so the MDF is more suitable for a drier environment such as a wardrobe. In addition, the amount of glue used in the production of fiberboard is large, and the environmental protection is slightly poor. Solid wood finger joint
Solid wood finger joint
Finger joint board, also known as integrated board, laminated material, finger joint material, the board which is made by deep processing of solid wood small pieces, because the wooden board adopts a jagged interface, similar to the cross-docking of two fingers, it is called the finger joint board. . Since the raw wood strips are cross-coupled, such a combined structure has a certain bonding force, and since the surface plate is not required to be adhered up and down, the glue used is extremely small.
Due to the small number of joints of the solid wood panels, the amount of glue used is also small, relatively environmentally friendly, easy to process, can be cut, drilled, sawed and shaped, but the solid wood finger joints are easily deformed and cracked. The quality of good wood finger joints is guaranteed, but the cost is high. Multi-layer solid wood board
Multi-layer solid wood board
The multi-layer solid wood board is made of multi-layer plywood which is arranged in a crisscross pattern, and the surface is made of high-quality solid wood veneer or technical wood as a fabric, and is produced by several processes such as cold pressing, hot pressing, sanding and health. Since the multi-layer solid wood board is not easily deformed and can automatically adjust the indoor temperature and humidity, the surface layer solid wood skin material has natural natural wood texture and hand feeling, so the selectivity is stronger. Therefore, it is favored by consumers.
The multi-layer solid wood board has good structural stability and is not easily deformed. Due to the vertical and horizontal gluing, high temperature and high pressure, the deformation defects of the solid wood board are solved from the internal stress. In the production process, the self-made high-quality environmental protection glue is used to make the formaldehyde emission limit of the product meet the national standard requirements and be green and environmentally friendly.
Three strokes to judge whether the board is good or bad
1, cut surface to see the material
Look at the panel of the wardrobe is to use high-density board or particle board. Judging from the cut surface of the board, the fine fibers in the high-density board are tightly combined, and the density is large and heavy. The high-density board can withstand a large pressure and has a long service life; while the fine particle structure of the particle board is not tight enough, even small pores can be seen, the light weight is placed in the hand, the gravity is small, and the service life is short.
2, smell the broken environmental protection
Whether the sheet substrate is environmentally friendly, as long as the content of free formaldehyde in the sheet is â‰¤9mg/100g, that is, the European E1 environmental standard, it is not harmful to human health. The most direct way is to open the door and pull it open. If there is a strong irritating smell, even tears, indicating that the formaldehyde content exceeds the standard; the second is to look at the merchant's material testing certificate to see if it holds the relevant national wood-based panel quality. Inspection certificate of the testing center.
3, plate specifications should be kept in mind
In order to reduce costs, some small manufacturers on the market usually sell dog meat and deceive consumers. The thickness of the standard cabinet body is 18mm, and the small manufacturers generally use the particle board as a high-density board to promote the board thickness of 16 mm, and the consumer said that the board is 18mm. The back panel of the wardrobe is typically 9 mm thick and the door panel is 9 mm thick. What is the overall wardrobe plate? Buying wardrobe plates should be optimistic
Summary: There are many plates for wardrobes on the market. Based on environmental protection and long-term goals for long-term use, Xiaobian prefers solid wood finger joints and multi-layer solid wood boards. Due to the rigor of material selection and process, the price is relatively high. . The whole wardrobe is usually installed in the bedroom, and we get along with each other day and night. The choice of plates should be cautious when purchasing, and everything is healthy and environmentally friendly. ============================================================
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Sintered NdFeB magnets are prepared by the raw materials being melted in a furnace, cast into a mold and cooled to form ingots. The ingots are pulverized and milled; the powder is then sintered into dense blocks. The blocks are then heat-treated, cut to shape, surface treated and magnetized.
As of 2012, 50,000 tons of neodymium magnets are produced officially each year in China, and 80,000 tons in a "company-by-company" build-up done in 2013. China produces more than 95% of rare earth elements, and produces about 76% of the world's total rare-earth magnets.
Neodymium magnets are graded according to their maximum energy product, which relates to the magnetic flux output per unit volume. Higher values indicate stronger magnets and range from N35 up to N52. Letters following the grade indicate maximum operating temperatures (often the Curie temperature), which range from M (up to 100 Â°C) to EH (200 Â°C).
Sintered Nd2Fe14B tends to be vulnerable to corrosion, especially along grain boundaries of a sintered magnet. This type of corrosion can cause serious deterioration, including crumbling of a magnet into a powder of small magnetic particles, or spallingof a surface layer.
This vulnerability is addressed in many commercial products by adding a protective coating to prevent exposure to the atmosphere. Nickel plating or two-layered copper-nickel plating are the standard methods, although plating with other metals, or polymer and lacquer protective coatings are also in use.
Neodymium magnets have replaced alnico and ferrite magnets in many of the myriad applications in modern technology where strong permanent magnets are required, because their greater strength allows the use of smaller, lighter magnets for a given application. Some examples are:
ï‚·Head actuators for computer hard disks
ï‚·Magnetic resonance imaging (MRI)
ï‚·Mechanical e-cigarette firing switches
ï‚·Locks for doors
ï‚·Loudspeakers and headphones
ï‚·Magnetic bearings and couplings
ï‚·Lifting and compressor motors
ï‚·Spindle and stepper motors
ï‚·Electrical power steering
ï‚·Drive motors for hybrid and electric vehicles. The electric motors of each Toyota Prius require 1 kilogram (2.2 pounds) of neodymium.
ï‚·Electric generators for wind turbines (only those with permanent magnet excitation)
ï‚·Direct-drive wind turbines require c. 600 kg of PM material per megawatt
ï‚·Turbines using gears require less PM material per megawatt
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