? 1, the combination of wear-resistant ceramics and steel plates is fixed on the equipment by countersunk head bolts or welding;
? 2. The other is a combination of rubber and ceramics, which is bonded to the chute hopper with cold glue.
? The specific choice is based on different conveying media, different working conditions, different environments (temperatures) and different wear conditions.
The specific indexes of hardness and toughness of wear-resistant ceramics in the national standard of wear-resistant ceramic composite lining board are:
Wear volume ≤0.06cm3, bulk density ≥ 3.5g/cm3, Rockwell hardness ≥82HRA, Vickers hardness ≥8GPa, and compressive strength ≥850MPa. There are also requirements for the properties of rubber vulcanized by ceramics, such as tensile strength, elongation at break, Shore hardness and permanent deformation at break, and the bonding strength between rubber and ceramics is ≥ 4.0mpa.
? Individual enterprises have exceeded the national standard of wear-resistant ceramic composite liner. The specific indexes of hardness and toughness of Hunan Jingcheng special ceramics wear-resistant ceramics are:
Wear volume ≤0.03cm3, bulk density ≥ 3.6g/cm3, Rockwell hardness ≥ 86Ra, Vickers hardness ≥9GPa, and compressive strength ≥880MPa. There are also requirements for the properties of rubber vulcanized by ceramics, such as tensile strength, elongation at break, Shore hardness and permanent deformation at break, and the bonding strength between rubber and ceramics is ≥ 4.8mpa.
Alumina wear-resistant ceramic composite lining board shall comply with GB/T27979-20 1 1 standard, and its title is GB/T 27979-201alumina wear-resistant ceramic composite lining board? Publishing House: China Standard Publishing House? Standard number: GB/T27979-20 1 1 ISBN: 16. You can buy it in the bookstore.
Key words: corundum wear-resistant ceramic heavy medium cyclone wear-resistant ceramic tube, ceramic wear-resistant tube, wear-resistant ceramic liner, heavy medium cyclone, cyclone separator, wear-resistant ceramic roller coating, ceramic chute, wear-resistant pipeline.
Product characteristics of special porcelain in Beijing
? 1. High hardness
Theoretical research and experiments show that the wear resistance of an object mainly depends on its hardness. The Rockwell hardness of Jingcheng wear-resistant ceramics is HRA80-90, which is second only to diamond.
? 2. Good wear resistance
? As one of the most wear-resistant industrial materials at present, Jingcheng wear-resistant ceramics mainly adopt the latest scientific research results. This process mainly depends on three factors: the choice of raw materials, the preparation and sintering of powder,
L raw materials are high purity alpha alumina and crystal growth inhibitor;
L granulation adopts the most advanced preparation technology, with uniform powder distribution and good fluidity;
Strict sintering time and precise temperature control.
This technology can effectively inhibit the growth of crystals and reduce the generation of internal pores, thus forming a very dense sintered body. The test data of Kyushu Institute of Industrial Ceramics in Japan show that the performance index of wear-resistant ceramics of our company has reached the international advanced level.
? 3. Good impact resistance
? The unique toughening formula forms a firm crystal bond, which greatly enhances the impact resistance of Jingcheng alumina ceramics, which is 3 to 5 times that of ordinary standard ceramics.
? 4. Smooth surface
? Jingcheng wear-resistant ceramics contain unique self-lubricating components, which can reduce blockage, reduce friction coefficient and prolong service life.
? 5. Lightweight
Its density is 3.5g/cm3, which is less than half that of steel. Replacing other heavy wear-resistant materials with wear-resistant ceramics can greatly reduce the equipment load.