板才标准(Board standard)Woodworking materials and specifications2-1: common sheet material type and specification attribute1. 1. Particleboard (English Name: PB)Definition: particleboard is the use of rubber and wood, wood shavings, rice husk, bagasse and other hot pressed noodles by the machine into the board. Because of its different structure and a wide variety, basically can be divided into the following three types:The size and size of the tablets in the A. board are the same.The B. center is larger and the surface is smaller.The C. center is large and gradually smaller.Features: panel thickness error is small, bending deformation is small, the size is relatively stable, but the cross-section of the watch is rough, fragile and easy to break.Commonly used panels for the company: 2440MM (long), *1220MM (width)The thickness is: 9, 12, 15, 18, 21, 25, 30MM and so onApplications: surface plate, vertical water, side plate, plywood and other components.1. 2、MDF (English Name: MDF or FB)Definition: MDF will be scrap wood, old paper, orange rods and other fibers through the separation, and then through the hot plate.Advantages of use:A. board is a substitute for hardwood, and cheaper than log.B. fiberboard has a smooth and flat surface.The C. cross section is more delicate and needs no handling.Shortcoming:A. dimension board water absorption is strong, if not dealt with wet treatment, easy to water absorption deformation.B. material is very heavy.C. paint is easy to absorb. It usually needs to be covered with thin pieces or used as primer to seal edges.Commonly used panels for the company: 2440MM (long), *1220MM (width)Thickness: 3, 4.75, 6, 9, 12, 18, 21, 25, 42MM and so on Application: panel, front / back / side plate, corner wood, template and other parts.1.3, plywood (English Name: PW)Definition: plywood, also known as plywood, it is the use of logs spin cut out of thin plate, and then cut to the appropriate size, and then glue, according to the wood texture criss cross to stack up, with a. hot press compression. The number of layers of the splint is odd, for example, the three layer is called three splints, and the five layer is called five splints, etc. (usually odd numbers).Features: smooth surface, longitudinal and transverse strength, stress uniformity, poor water absorption performance.Mezzanine number: 3 clamps, 5 clamps, 7 clamps, 9 clamps.Commonly used panels for the company: 2440MM (long), *1220MM (width)Thickness: 3, 5, 9, 12, 21MM and so onUses: pumping floor, pumping side / back plate, cover plate, back board, curved wood and other parts.2-2: wood species, specifications and characteristics:2.1. Introduction of common timber species: 1, rubber wood (RW) : the color is light yellow, dark circles round rings clear, ribbons, pores and uniform, little wooden structure in the wood texture is hard, oblique, and smell, not easy to dry, no corrosion, easy bending deformation.2, pine (PINE) color: pale yellow, yellow, yellow brown, rings clear, round circles ribbon, usually with rings located in other parts of brown white wood, straight texture, easy to dry and easy to crack deformation, exposed to the weather.3, Fraxinus mandshurica (ASH): white or slightly yellow brown (sapwood) (heartwood), rings clear, uneven, rough wooden structure, straight texture,Beautiful pattern, luster, hardness.4, oak (OAK) : ring slightly obviously, coarse texture structure, straight lines, dry water difficult, strong corrosion resistance, abrasion resistance, easy to crack bending, difficult processing, easy to crack, smooth section.5, birch (ALDER): rings slightly obvious, texture is straight and obvious, material structure is delicate and soft, smooth, soft or moderate texture, birch elastic, easy to crack when drying, bending, not resistant to decay.6, Rowan: straight texture, slightly rough structure, color beauty, moderate hardness, toughness, easy to dry, not easy to crack when dry, slightly curved, good processability, planing surface smooth, adhesive properties, performance and good performance of colored paint.7, poplar (POPLAR) : straight grain, fine structure, soft and soft, good processing performance, planing after strong smooth nail nail, but easy to crack, fast drying, drying, cracking, bending.2. 2. Drying of wood:Before making wooden furniture, the wood must be dried, and the moisture content of the wood will be dried to the required value of the furniture, that is, the moisture content is 10%-15%:1, is to prevent the occurrence of cracking and deformation of parts, prolong the service life of the wood drying quality is not up to the standard of wood, the change of water content in the range below the fiber saturation point in the wood, there will be shrinkage and swelling, make the wood warped and cracked.2, it can improve and improve the mechanical properties and processability of wood furniture parts. When the moisture。