HOCHFESTE UNTERLEGSCHEIBE

High strength flat washer can bear large pressure and tension. When the connection parts bear high load, such as the connection of building steel structure and the connection of key parts of heavy machinery, it can effectively disperse the pressure and prevent the connection parts from being damaged due to excessive local pressure. For example, in the boom connection of a large crane, the high strength flat washer can evenly distribute the pressure of the bolt to the connecting parts, so as to ensure that the boom is firmly connected when it bears huge lifting force.

Because of its high strength and high-precision manufacturing technology, high strength flat washer can provide better anti-loosening effect when used with appropriate bolts and nuts. In the vibration environment, such as the connection of automobile engines and the operation of industrial equipment, this anti-loosening performance is particularly important, which can effectively reduce the connection looseness caused by vibration and ensure the safe operation of equipment.

Under harsh environmental conditions, such as high temperature, high humidity and chemical corrosion, the corrosion resistance of high strength flat washers can ensure the long-term stability of the connection. For example, in the pipeline connection of chemical equipment, 316L stainless steel high strength flat washer can resist the corrosion of various chemical media and ensure the tightness and safety of pipeline connection. At the same time, the stability of its material also enables the gasket to maintain good performance under different temperatures and working conditions.

HOCHFESTE UNTERLEGSCHEIBE

Hochfeste Unterlegscheibe für hochfeste Schrauben. Die Oberfläche, auf der die Unterlegscheiben sitzen, sinkt nicht ein. Diese Unterlegscheiben verhindern, dass sich Schrauben lösen, weil die Oberfläche, auf der sie sitzen, einsinkt usw.

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ASTM F436 Flat Washer

F436 Material Grade are hardened flat washers which have a Rockwell Hardness value ranging between 38 to 45 HRC. These washers can either have a plain finish or can be hot dipped galvanized. The hardened flat ASTM F436 Washer is used under bolt nuts and head in order to increase the bearing area.

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#45 carbon steel Flat Washer ,high tensile strength

Hochfeste Unterlegscheibe für hochfeste Schrauben. Die Oberfläche, auf der die Unterlegscheiben sitzen, sinkt nicht ein. Diese Unterlegscheiben verhindern, dass sich Schrauben lösen, weil die Oberfläche, auf der sie sitzen, einsinkt usw.

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Application Scenario of High Strength Flat Washer

Steel structure connection: In large structures such as building steel structure and bridge steel structure, the combination of high strength flat washer and high-strength bolt can effectively disperse the huge pressure generated when the bolt is tightened, and ensure the reliability and safety of the connection.
Mechanical manufacturing: In the fields of heavy machinery, construction machinery, automobile manufacturing, etc., high strength flat washers are used for the connection of key parts, such as the connection of engine cylinder block and chassis, and can bear large mechanical load and vibration.
Power equipment: In the connection of high-voltage transmission lines and substation equipment, high strength flat washers can ensure the stability and safety of the connection and prevent the connection from loosening due to long-term stress and harsh environment.

Difference Between High Strength Flat Washer and Ordinary Flat Washer

Bearing capacity: the bearing capacity of high strength flat washer is much higher than that of ordinary flat washer, and it can bear greater axial force and shear force, which is suitable for occasions with high requirements on connection strength.
Material and manufacturing process: high strength flat washers are usually made of high-strength alloy materials and undergo strict heat treatment and surface treatment to improve their strength and corrosion resistance; Ordinary flat washers are generally made of ordinary carbon steel or stainless steel, and the manufacturing process is relatively simple.
Dimensional accuracy: the dimensional accuracy of high strength flat washers is required to ensure the accurate fit with high-strength bolts; The dimensional accuracy of ordinary flat washers is relatively low.

Factors Affecting the Hardness of High Strength Flat Washer

Heat treatment process: For alloy steel washers, heat treatment is the key to control hardness. Factors such as quenching temperature, quenching medium and tempering temperature will affect the hardness. For example, 40Cr alloy steel washer is quenched at 840-860℃, oil cooled, and then tempered at 500-600℃. Different combinations of quenching and tempering parameters will result in different hardness. If the quenching temperature is too high or the tempering temperature is too low, it may lead to high hardness and brittle gasket; On the contrary, insufficient hardness can not meet the requirements of high strength.

Content of alloying elements: In alloy steel, the content of alloying elements (such as chromium and molybdenum) will affect the hardness. Taking 35CrMo alloy steel as an example, the addition of chromium and molybdenum can improve the hardenability and strength of the steel. Properly increasing the content of alloying elements can improve the hardness of the gasket, but too many alloying elements may increase the cost and in some cases may affect other properties of the gasket, such as toughness and processability.

Processing technology: Cold working or hot working will also have a certain impact on the hardness of the gasket. For example, in the process of cold stamping, the material will undergo work hardening. If the deformation degree of cold stamping is large, the hardness of the gasket will increase. For some high strength flat washers that need precise control of hardness, annealing and other treatments may be needed to adjust the hardness after processing.