Looking for Washer for steel structures, product grade C DIN 7989-1 Steel Hot dip galvanized 100 HV M33 Fabory offers the best buy of Special washers Delivery within 48 hours Payment on invoice 100. DIN 7989 Flat Washers are used where the outer diameter of a mating nut is smaller than the hole. Flat Washers may reduce the risk of damage to the surface from other threaded or sharp edge components.ĭIN 7989 Flat Washers are Removable and Reusable. We are providing the range DIN 7989 Flat Washers with a variety of materials, sizes, design, strength, finishes and other configurations. DIN 7989 Flat Washers are available with a various type of plating, finishing or coating options such as Tin, Zinc (yellow, white, blue, black), Hot Dip-Galvanized, Chrome, Nickel-Brass, Black Oxide, Electro Tin, Phosphate, Powder Coating and any other as required. Super Thick Metric Stainless Steel Construction Washer.
We also manufacture Custom Flat Washers that perfectly match Customer Design and Customer Specifications. Reduced outer diameter flat washers are great for tight clearance applications. Long-term high-pressure action will permanently deform the flat washer.Flat washers are placed under a bolt head or nut to evenly distribute the load of the fastener over a wider area. The working pressure of the hydraulic system of construction machinery is also gradually increasing, and the equipment has a long operating cycle.
The influence of pressure on permanent deformation The pressure of hydraulic system is an important factor that causes permanent deformation of flat washers. For flat washers that work at sub-zero temperatures, the elasticity of rubber materials that are not resistant to low temperatures will decrease sharply at -50☌ to -60☌, and the stamping parts will lose their elasticity.Ģ. Low temperature will reduce the elasticity of the rubber material, or even disappear. When the permanent deformation is greater than 40%, the flat gasket loses its sealing ability and leaks. The higher the operating temperature, the greater the compression variable of the flat washer. High temperature will accelerate the aging of rubber. The influence of temperature on permanent deformation.
As a result, the sealing effect is reduced, and finally leakage occurs.ġ. Permanent deformation Since the synthetic rubber material used in the flat gasket is an elastic material, the initial design of the pressing amount and rebound blocking ability of the stamping parts after long-term use, what are the uses of the flat gasket in the installation and use, the elasticity is reduced, and permanent deformation occurs. Under high temperature and high pressure working conditions, the main reason for the failure of flat gaskets is permanent deformation, squeezing into the sealing gap and distortion during movement. In the use of construction machinery, flat gaskets are widely used in hydraulic systems.
0 kommentar(er)
