Strength and hardness testing of flange gasket

 　　Corrosion resistance in the atmosphere, if it is industrial atmosphere or heavy pollution areas, it is required to clean in a timely manner to avoid corrosion. Flange is suitable for the processing, storage and transportation of food. High pressure equipment and piping, the use of copper, aluminum, stainless steel, stainless steel, made of 10 or other shape of the metal gasket. Flange in the specific field of use show important performance and value, fully grasp the use of specific operation and contribution, common and applicable to the temperature below 120 DEG C; pressure below 5MPa occasions, for general corrosive medium, the most commonly used is acid asbestos board. The contact width of the high pressure gasket and the sealing surface is very narrow (line contact), and the sealing surface and the gasket are highly polished.

　　Polyurethane regardless of stainless steel plate or heat resisting steel plate, the comprehensive properties of austenitic steel is best, both sufficient strength, and has excellent plasticity and hardness is not high, one of the reason of which is that they have been widely used. The pneumatic actuator is a kind of ring which can produce plastic deformation and has certain strength. Valve test press most gasket is from non metal plate cutting down, or by professional plant according to the size of the provisions made, the material for asbestos rubber sheet, asbestos board, polyethylene plate; and a with thin steel strip and asbestos band together winding and winding gasket. Different pressure flange have different thickness and use different bolt