07/20/2016

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Wood Frame Construction Oriented Particle board is a new high-tech material used in Wood Frame Construction, in the manufacture of furniture, for packaging. osb boards are made by gluing large size (3-8 cm) thin chips, with upper and lower layers of the grain direction, longitudinal, and in the middle layer - cross the length of the slab. On the physical properties of osb are similar to softwood plywood, but much cheaper to manufacture due to low quality requirements for wood raw material. Because of the lower cost of the same qualities of consumer-oriented chipboard gradually replacing plywood in many traditional areas of application. Oriented strand board - a three-layer thick pressed wood board from the large-oriented chips of softwood. A substitute for plywood and particleboard. Appearance Oriented chipboard clearly explains its name. Plate can be easily distinguished by an elongated chips. Oriented strand board is made up of three layers. In the outer (upper and lower) layers of wood chips is located longitudinally and transversely in the inner layer. Each layer is glued with waterproof resins and compressed under high pressure and temperature. As a result of this technological features of the osb gets water resistance, elasticity and resistance to stretching and construction loads. Particle board, oriented structure (OSB) are made by hot pressing of wood chips mixed with a binder material. Technology osb production was first applied on an industrial scale in the U.S. in early 1990. According to this production technology initially logs are sorted, then hold a special treatment and fumigate. After which the logs planed along the fibers to maximum preservation of strength of the structure of wood for wood chips. The average length of wood chips is 80 mm and the width depending on the barrel. Thus, the osb boards are made only from the particle size of...
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Refractory The refractory mass or refractory body are elements that resist heat and are especially used in the walls of the furnace or in general any system that requires protection from heat, is usually found in the isolation of fireplaces, fires, hot water tanks for crucibles for molten metals, etc.. through asbestos. They are normally used in association with the refractories or refractory plates and have a common composition with them. To produce, prepare a mixture of ligno-sulfonates aluminum silicate, (aluminum + silicon) and silicon carbide, a look that has been homogenized mixture is added and barium sulfate and calcium fluoride and then proceed to cooking of the mixture to 110 degrees Celsius, such mixtures significantly reduce water use and allow formed by molding or extrusion, in the past was the use of asbestos usual for this type of application but due to toxicity (carcinogenic) have fallen into disuse usually are found with a density of between 450-750 kg M3, with a very small thermal contraction of around 0.5%, non-combustible and are obviously looking for with no water in its structure, for which they should be kept dry. The power must be capable of cutting, drilling, grinding, shaping, polishing, and usually just need to work the conventional tools of carpentry. The installation and the pairing of refractory masses must be performed by qualified personnel, since not all the mortars are useful for this purpose under that contain moisture, the same, as is evident is harmful and should be avoided at all special things at the time of the operation of the oven because it creates internal pressures, which could degenerate into cracks in the refractory bricks An application of the refractory mass is the development of so-called prefabricated refractory and can be manufactured according to the geometry specified by the customer,...