Principles of raw material selection: 1 moderately-sized needles and hardwoods; 2 diameter and chord-direction dry shrinkage coefficient; 3 if it is multi-species, it requires basic material closeness; 4 wood with obvious defects (decayed, cracked, and transparent) Crack, skin, etc.) Not used.
The main reasons for selecting moderately-sized needles and hardwoods are as follows: (1) Soft materials are easy to process, cutting force is small, machine tools, tools, and workpieces are less deformed during processing, and the dimensional accuracy of the processed products is high. 2 The raw material with moderate hardness will not have too much bulk density, and its dry shrinkage rate will be correspondingly small, and the quality of the product after drying is relatively stable. 3 The medium hardness of the raw material has strong adaptability to the adhesive, good glue effect and high strength. 4 post-processing is convenient, easy to sand, milling and so on.
Since the wood properties are anisotropic, the degree of shrinkage and swelling in all directions is not uniform, from 30% moisture content to dry moisture content, the wood shrinkage is 3% to 6%, and the longitudinal direction is 011. %, the chord direction is 6% to 12%, generally varies by tree species, but for the same wood, the ratio of radial to chordwise dry shrinkage is about 1:2, and the longitudinal dry shrinkage is extremely small. Dry shrinkage will cause materials to be reduced or scrapped for wood and wood products. The main defects are as follows: "V" crack, end crack, internal crack, cross bend, straight bend shrinkage, tile warp, bow warp Wait. Of course, in addition to material selection, the drying process is equally important to reduce and avoid product defects. Therefore, choosing a wood with a small dry shrinkage factor is very important in the purchase of raw materials.
In addition, when purchasing raw materials, it is also important to select tree species with similar material properties. Thus, the drying standard is easier to formulate, and the drying process is relatively easy to adjust and control.
During the construction process, the storage methods and storage sites of raw materials are often neglected. In fact, storage methods and sites are an important part of the production process, with clear requirements and regulations. First: the site should have waterproof facilities, there must be drainage ditch around, the site should have a certain drainage slope of 1% to 2%, in order to facilitate the drainage of rainwater in the rainy season, the ground should be laid with concrete or wool, stone, so that the raw materials are not Sticking to the sediment to facilitate the cutting of the wood; Second, the site must be equipped with fire prevention facilities, especially for the large-scale manufacturers, the storage capacity of the raw materials is also relatively large, so in the dry season, such as July to November, fire prevention Safety is extremely important. The main fire prevention measures are: setting fire hydrants and fire dams, the distance between åž› and åž› is not less than 115 meters, and the main fire dam is reserved. Third: anti-corrosion, anti-mildew, raw materials, if it is seasonal purchase, it is important, seasonal procurement, large-time purchase, large storage period, so qualified manufacturers can put a simple storage shed, or enter the factory The raw materials are processed in stages and batches, that is, the wood with perishable and mildew is used in advance.
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Cour manager tables system aims to meeting different clients budget requirement and at the same time meeting their design preference.
Create a striking first impression with the our Manager Table Series, which features an elegant bowfront design with laminate or wood veneer, a glass table top option and a three-inch overhang on satin chrome stand-offs. It includes black reveal accents, with toekicks and pedestal pulls in black or satin finish. An elegant solution to your managing needs, with the affordability you expect from us.
Manager Table
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