MDF production of piano side panels need to be tested
Whether at home and abroad when the piano piano factory in the production side, next door piano, piano cover are likely to use MDF (MDF board). Usually the specifications of domestic MDF are 1.22*2.44 meters. A few custom-made sizes are also 1.830*2.745 meters, and Indonesia imports about 1.8*1.9 meters. The thickness is usually from 3mm to 30mm . High-quality MDF can be engraved, chamfered, boring, milling, cutting and slotting, and punching does not collapse. Â In the inspection of the MDF is suitable for use on the piano in addition to the density (poor quality may be added with sand to increase the density, it is easy to damage the imported woodworking saw blade when cutting the board). Also carry out density deviation, water content, static bending strength, elastic modulus, plane tensile strength, water absorption thickness expansion rate, front holding screw force, free formaldehyde emission (points E2, E1 , E0, etc.), bleed paint Wait for the test. Â The pine medium-density board and the miscellaneous medium-density board have different appearance colors due to different raw materials. In addition, the price of MDF is different because of the above-mentioned indicators, and the price varies greatly. It is normal for a plate with the same thickness to have a price difference of 40 to 50 yuan. Label: sheet brand, sheet agent, MDF, sheet price
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