Take you to understand metal winding sheet-hardware

Let you know about metal gaskets. Metal spiral wound gaskets are currently widely used sealing gaskets. They have the best resilience among semi-metal gaskets. They are made of V-shaped or W-shaped thin steel strips and various fillings. The material is alternately wound, which can withstand high temperature, high pressure and adapt to the conditions of chao low temperature or vacuum. By changing the material combination of the gasket, it can solve the chemical corrosion problem of various media on the gasket. The structure density can be based on different locks. To strengthen the main body and accurate positioning, the spiral wound gasket is equipped with a metal inner reinforcing ring and an outer positioning ring. The inner and outer steel rings are used to control the maximum tightness of the flange sealing surface contacted by the gasket. The surface accuracy requirements are not high. Common uses of metal wound gaskets Suitable for occasions where the medium is uneven, the bonding force is easy to loose, the temperature and pressure change periodically, and there is impact or vibration. It is a static sealing element for flange joints of valves, pumps, heat exchangers, towers, manholes, hand holes, etc. It is widely used in petrochemical, machinery, electric power, metallurgy, shipbuilding, medicine, atomic energy and aerospace sectors. Precautions for the installation and use of metal spiral wound gaskets 1. The winding part bi of the gasket must be between the flange sealing surfaces, and the width of the winding part cannot be widened at will. This will inevitably affect the pressing force of the bolt and thus affect the sealing performance of the gasket. . 2. It is best not to use basic gaskets on concave and convex flanges. This is because basic gaskets are easy to open and weld on the inner ring of the gasket under the axial compression force of the flange, which will cause the gasket to fail. . 3. Under severe working conditions such as high temperature, cold or frequent alternating between cold and heat, large vibration, strong corrosive medium, etc., gaskets used for flat flanges and raised face flanges should be equipped with inner rings of reasonable materials. 4. Never use low-material gaskets to replace high-material gaskets. Avoid material corrosion or other reasons causing gasket failure. Need to know more, welcome to consult: