Plates are widely used in decoration and furniture production. Plates can be divided into solid wood boards and wood-based boards according to material classification; they can be divided into solid boards, splints, density boards, decorative panels, fireproof boards, particle board, etc. . At present, besides the use of solid wood panels for floors and doors, the panels we use are generally artificially processed panels. The following small series for everyone to introduce the classification of sheet metal and plate purchasing skills.
Classification of plates
1, ABS plate
ABS sheet is an emerging material in the sheet industry. Its full name is acrylonitrile/butadiene/styrene copolymer plate. The English name is Acrylonitrile-butdiene-styrene, which is currently the most productive and most widely used polymer. It combines the various performances of PS, SAN, and BS, and combines the excellent mechanical properties of toughness, rigidity, and rigidity. It has excellent impact strength and can be used at very low temperatures; the abrasion resistance of ABS. Excellent, dimensional stability, and oil resistance, can be used for bearings under moderate load and speed.
2, acrylic sheet
Has good light transmission, is a colorless transparent organic glass sheet, light transmittance of more than 92%; has excellent weather resistance, strong adaptability to the natural environment, even if the sun exposure, wind and rain for a long time is not Will make its performance change, good anti-aging properties; processing performance is good, not only suitable for mechanical processing and easy thermoforming; acrylic board can be dyed, the surface can be painted, silk screen or vacuum coating.
3, Malacca plate
Malacca plate, also known as: Malacca wooden side, Ma Liu deck, made from the original cut Malacca, general specifications: thickness 5.3cm, length: 110cm, 125cm, 140cm, 155cm, width 8cm or more. Malacca wood is mainly used for processing Malacca core board, that is, blockboard core board, can also be used to produce Malacca Glulam, and door core board.
4, stainless steel plate
High-strength stainless steel sheet with excellent corrosion resistance, bending workability, and weld joint toughness of the stainless steel sheet, and excellent stamping performance at the welded part, and a method for producing the same. The surface is smooth, with high plasticity, toughness and mechanical strength, corrosion resistance to acids, alkaline gases, solutions, and other media. It is an alloy steel that is not easily rusted, but it is not absolutely rustless.
5, composite plate
The concept and production method of the composite sheet are different for different materials. In daily life, metal composite boards, wood-plastic composite boards and FRP composite boards are often used.
6, artificial board
Using wood scraps produced during the processing process, chemically bonded panels are added. There are many kinds of man-made boards, and there are commonly used decorative boards such as particle board, medium density board, block board (large core board), plywood, and fire board.
7, artificial stone plate
Artificial stone, also known as "artificial marble", is made of a non-natural mixture, such as resin, cement, glass beads, aluminum powder, etc., and gravel binder, which is a new kind of composite material.
8, wood plastic sheet
Wood-plastic panel material is the ideal material for the furniture industry, interior decoration industry and the future wooden house construction industry. It does not contain harmful substances to the human body and has excellent properties such as small specific gravity, high strength, moisture resistance, corrosion resistance, heat insulation, and insulation.
9, glass steel plate
The new fiberglass yarns, glass fiber mats, mesh cloths and other fiber products and various kinds of resins are manufactured through the extrusion, molding and hand lay-up processes. As a new type of sheet, the performance is comprehensive and complete. They can be divided into three main categories: hollow grid-like panels, solid FRP panels, and FRP grille covers.
Plate purchase skills
1, the surface of the board has no obvious flaws
The surface of the decorative sheet should be smooth, free of burrs and slicing knife marks, no glue penetration phenomenon and board surface contamination phenomenon (such as local blackening and yellowing), try to choose the surface of the board without cracks, cracks, no knots, clips, The natural warpage of the entire board should be as small as possible for the resin capsules and the gum lanes, so as to avoid the phenomenon of sand penetration revealed by the base material due to improper operation of the sanding process.
2. Recognize the difference between veneer veneer and natural wood veneer veneer
The former plate texture is basically a straight texture, and the texture pattern is regular; the latter plate is a natural wooden pattern, and the natural variability of the texture pattern is relatively large and irregular.
3, the appearance of sheet inspection
The appearance of decorative panels should have a good aesthetic sense. The materials should be fine and uniform, with clear color and beautiful wood grain. The texture of the panel boards and parquet should be arranged according to certain rules. The wood color is similar, and the seams are almost parallel to the edges of the panels.
4, the structure of the sheet glue layer is stable, there is no open glue phenomenon
It should be noted that bulging and delamination cannot occur between the veneer surface and the substrate, and between the internal layers of the substrate.
5, to choose low formaldehyde release sheet
Do not choose stimulating decorative plates. Because the greater the odor of the plate, the higher the release of formaldehyde, the greater the pollution, the greater the danger.
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Classification of plates and plates
How are modern steel beam bridges constructed?
Modern beam bridges that can carry road traffic and railroad are made of steel or reinforced concrete which can also be prestressed or post-tensioned. First step in building of a Beam Bridge is placing of cofferdams which are constructed around each column location in the riverbed.
Why is steel used to construct bridges?
Steel is an ideal material for bridges. It is an essential part of modern bridges because it is strong, can flex without fracturing and has a long life, even in the harshest conditions. It can be used to build bridges of any length because of its durability and ease of manufacture and maintenance.
How long do steel bridges last?
Bridges are typically designed to provide 30 years of service. The actual length of service depends a lot on the amount of stress the bridge is subjected to.
truss bridge,steel buildings,steel frame building
Zhongda Steel Structure , https://www.zhongdametal.com