How to identify alumina lining plate
Mastering the simple alumina lining identification method can help you choose a more suitable supplier. First, let’s understand the basic knowledge of alumina alumina lining. Its production process is to wet-grind the original alumina powder to about the same size, then dry it, add additives to make the powder, and then dry-press it with a mold and press, place it in a kiln, and fire it at a high temperature of 1,600 degrees. Every step affects the quality of the final product. The identification methods of alumina linings are as follows. . The surface of the alumina lining plate that looks good to the eye is flat, no black spots, smooth and not rough. The color of the porcelain alumina lining plate is white. The color of the porcelain alumina lining plate is light yellow. The color of the good alumina lining plate has the texture of jade. . In particular, ceramic linings with a thickness less than 100 mm have high requirements on the stability of the kiln temperature. Excessive heating or uneven heating and cooling will cause deformation of the lining. The black spots are impurities in the original alumina powder that have not been removed. Before packing the alumina lining board, the corundum on the surface must be sanded off. Welded alumina lining plate accessories, the shape of the iron bowl matches the inner hole of the lining plate, the minimum weight is not less than gram, the porcelain cap matches the reserved hole, and is smooth without gaps. . To measure the tolerance, use a vernier caliper to measure the length, width and height of the alumina liner. Alumina ceramics have a certain shrinkage ratio, so they all have a certain tolerance range. , Measuring the density of alumina content can calculate the density of porcelain alumina lining board by measuring density./The density of porcelain alumina lining board is./The drainage method should be used for accurate density measurement. . Under experimental conditions, the hardness can be measured according to the specified method. For wear-resistant experiments, use a sandblasting machine to measure wear within minutes at pressure, distance, angle, and time. Among the alumina lining identification methods, the abrasion test is what customers are most concerned about and is also the decisive factor in the final quality of the product. The shelf life of wear-resistant ceramic parts is related to the specific customer's working conditions. By simulating the customer's actual working conditions through wear experiments, the service life of the alumina lining can be roughly estimated. The article is excerpted from ../
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