Insulated ceramic wear-resistant elbow inspection method
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Lined ceramic wear-resistant elbows are divided into three categories: self-propagating ceramic elbows, ceramic patch wear-resistant elbows, and ceramic ring wear-resistant elbows. 1. The self-propagating ceramic wear-resistant elbow is manufactured using a world-class self-propagating process, along with a chemical reaction centrifugal casting technique. The ceramic layer is formed into dense corundum porcelain (AL2O3) at temperatures above 2200°C, and it forms a strong bond with the steel pipe through a transition layer. Composite pipes take full advantage of the high strength, good toughness, impact resistance, and excellent weldability of steel pipes, as well as the high hardness, superior wear resistance, corrosion resistance, and heat resistance of corundum ceramics, thereby overcoming the weaknesses of steel pipes such as low hardness and poor wear resistance, as well as the poor toughness of ceramics. II. Requirements for self-propagating ceramic wear-resistant elbows upon leaving the factory1. Hardness testing
Since the lining layer of ceramic composite pipes is made of corundum ceramic (α-Al2O3), their Mohs hardness can reach 9.0, which is equivalent to an HRC value of over 90. Therefore, it exhibits high wear resistance against abrasive media transported in industries such as metallurgy, power generation, mining, and coal mining. 2. Surface inspection: SHS ceramic composite pipes are required to have a smooth inner surface free from rust, especially with no burrs at the ends. Therefore, self-igniting ceramic wear-resistant elbows are corrosion-resistant and scale-proof. 3. Angle detection: All elbows of self-igniting ceramic wear-resistant elbows are inspected for their angle at the time of leaving the factory; the angle error must not exceed 0.5 degrees to ensure smooth installation on site. https://pics1.baidu.com/feed/1b4c510fd9f9d72af115a0cdb4dff132369bbbed.jpeg?token=39a67ca7843fefed59f3babfa41ba7f8 https://pics3.baidu.com/feed/a50f4bfbfbedab646bad2abd96c376c57b311eef.jpeg?token=ea0688bb64a34b40ff0c9dac18affe12 https://pics5.baidu.com/feed/342ac65c103853434ef9c64cf3e66978cb8088a1.jpeg?token=5192efa21ec82cabe967b23ee7007c21
Ceramic wear-resistant elbows are manufactured using a self-propagating reaction process, via a chemical reaction and centrifugal casting technique. The ceramic layer is formed at high temperatures of over 2200°C to create dense corundum porcelain (AL2O3), which forms a strong bond with the steel pipe through an intermediate layer. Composite pipes take full advantage of the high strength, good toughness, impact resistance, and excellent weldability of steel pipes, as well as the high hardness, superior wear resistance, corrosion resistance, and heat resistance of corundum ceramics, thereby overcoming the weaknesses of steel pipes such as low hardness and poor wear resistance, as well as the poor toughness of ceramics.
Purchase list for ceramic ring wear-resistant elbows Wear-resistant elbows and straight pipes are made of ceramic, are wear-resistant, of high quality, and come with ISO9001 certification. Many purchasing staff are not very familiar with the purchase list for wear-resistant elbows; below is a detailed introduction. List of items to be purchased for wear-resistant elbows: Lined elbows \DN100*90°\Q235\Flanges\Ceramic 1. Purpose: Replacement of wear-resistant elbows in the ash transfer pipeline of Boiler #1’s economizer. 2. The pressure should be 1.0 Mpa; the ceramic lining ring must be airtight, with the ceramic firmly bonded to the inner wall of the tube without any looseness (the main component of the ceramic should be aluminum oxide at a level of ≥90, with a hardness of HRA≥86).