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- home > Supply > Yao Tai Metal Material supply line supply steel strip spring steel wire steel wire 55Si2Mn
Information Name: | Yao Tai Metal Material supply line supply steel strip spring steel wire steel wire 55Si2Mn |
Published: | 2012-03-15 |
Validity: | 30 |
Specifications: | Complete |
Quantity: | 1.00 |
Price Description: | |
Detailed Product Description: | [Common brands]: common grade alloy spring steel, chemical composition, heat treatment, mechanical properties and uses. Spring steel alloy used has 60Si2Mn, 50CrVA, 30W4Cr2VA and so on. 60Si2Mn steel is the most widely used alloy spring steel, alloy spring steel production output of about 80%. Its strength, hardenability, tempering resistance than carbon spring steel of high operating temperature up to 250 ℃, drawback is that decarbonization tend to be larger, suitable for the manufacture of the spring thickness less than 10mm and 25mm section size is less than spiral spring, in the heavy machinery, railway vehicles, automobiles, tractors have a wide range of applications. 30W4Cr2VA is a high-strength heat-resistant springs for work below 500 ℃ [Spring Forming Method]: The diameter or thickness greater than 10 mm spring big spring, the temperature can be higher than the normal quenching temperature of 50 ~ 80 ℃ hot forming, on the diameter or thickness of less than 8 ~ 10mm spring small spring, common cold roll forming cold-drawn spring wire. [To ensure the high spring has sufficient strength and toughness, through 50CrVA mechanical properties of steel and steel 60Si2Mn similar, but higher hardenability, Cr and V in steel can improve the elastic limit, strength, toughness and resistance to tempering of, commonly used in the production of heavy load to bear, working temperature is high and the cross-section of a larger size springs. The main boiler safety valve springs, turbine steam seal spring. Often used in the temperature of quenching and tempering. Spring of hot forming, hot forming can be used Quenching of hot and cold forming the spring, and sometimes eliminates the need for quenching and tempering process in the temperature, just after forming the 200 ~ 300 ℃ annealing can be carried out to stress. Spring steel heat treatment is usually carried out after the shot peening treatment, which is aimed at the spring surface residual stress in order to improve the fatigue strength of the spring. [Performance]: hardness 40 ~ 48HRC, a higher elastic limit and fatigue strength, and a certain plasticity and toughness Spring is a buffer, damping and energy storage and so on. Spring is generally the work of the alternating stress, the common failure mode is fatigue failure, therefore, must have a high yield point and yield ratio (σs / σb), elastic limit, anti-fatigue properties, to ensure there is sufficient flexibility in the spring deformation capacity and can withstand greater loads. Meanwhile, the spring steel also requires a certain plasticity and toughness, a certain hardenability, decarbonization and less easy to overheat. Spring also requires some special heat resistance, corrosion resistance, or stable in a long time flexibility. Medium carbon steel and high carbon steel can be used as a spring, but because of its lower hardenability and strength can only be used to make small cross-section, a smaller spring force. Alloy spring steel can manufacture large cross-section, the important spring high yield limit. [Chemical Composition]: alloy spring steel as the high carbon components, the general wC = 0.5% ~ 0.7%, to meet the high flexibility, high strength performance requirements. The main alloying elements are added to Si, Mn, Cr, serves to strengthen the ferrite and improve the hardenability and tempering resistance of. But adding too much Si will cause the surface of steel is easy decarburization during heating, adding excess Mn tends to grain growth. A small amount of V and Mo can be refined grains, and thus further enhance the strength and improved toughness. In addition, they also further enhance the hardenability and resistance to tempering role. |
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Copyright © GuangDong ICP No. 10089450, Yao Tai Metal line All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
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You are the 100202 visitor
Copyright © GuangDong ICP No. 10089450, Yao Tai Metal line All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility