High-temperature resistant flange

Abstract

The invention provides a high-temperature resistant flange which comprises a flange body, wherein the surface of the flange body is covered by a high-temperature resistant membrane; the high-temperature resistant membrane consists of the following raw materials in parts by weight: 80-95 parts of PVC (Polyvinyl Chloride), 20-35 parts of a polyvinyl chloride resin, 1-3 parts of an antioxidant, 3-8 parts of a glass fiber, 2-5 parts of acrylamide, 0.8-1.5 parts of magnesium stearate, 0.8-1.8 parts of a calcium-zinc composite stabilizer, 1-2 parts of titanium dioxide and 1-3 parts of carnauba wax;the surface of the high-temperature resistant membrane is coated by a nano solution layer; the nano solution layer comprises the following chemical components in percentage by weight: 21% of antimony-doped stannic oxide nanocrystalline, 14% of nanometer titania, 11% of nano silicon carbide and the balance of an organic fluorine waterproof agent. The high-temperature resistant flange is not only convenient to process and good in high-temperature resistance, but also good in wearing resistance and long in service life.

Description

technical field [0001] The invention relates to a high temperature resistant flange. Background technique [0002] Flanges are often used in certain high-temperature environments. Flanges that have not been subjected to high-temperature treatment are prone to damage under the influence of high-temperature conditions for a long time. In addition, Si and Al in flange manufacturing alloys have a significant impact on the high-temperature resistance of flanges. However, if the content of Si and Al is increased, the performance of the flange will be greatly reduced. Therefore, the high temperature resistant effect of the flange is further improved by spraying the high temperature resistant metal coating on the surface of the flange. It will affect the precision of the flange and its accuracy, and then the sealing effect cannot be guaranteed. Contents of the invention [0003] The purpose of the present invention is to overcome the defects in the prior art and provide a high te...

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Problems solved by technology

[0002] Flanges are often used in certain high-temperature environments. Flanges that have not been subjected to high-temperature treatment are prone to damage under the influence of high-temperature conditions for a long time. In addition, Si and Al in flange manufacturing alloys have a significant impact on the high-temperature resistance of flanges. However, if the content of Si and Al is increased, the performance of the flange will be greatly reduced. Therefore, the high temperature resistant effect of the flange is further improved by spraying the high temperature resistant metal coating on the surface of the flange. It will affect the precision of the flange, affect its accuracy, and then cannot guarantee the sealing effect

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