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HIGH-STRENGTH SPRING STEEL, METHOD FOR PRODUCING HIGH-STRENGTH SPRING, AND HIGH-STRENGTH SPRING
HIGH-STRENGTH SPRING STEEL, METHOD FOR PRODUCING HIGH-STRENGTH SPRING, AND HIGH-STRENGTH SPRING
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机译：高强度弹簧钢，高强度弹簧的制造方法及高强度弹簧
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摘要
A steel for high-strength spring has an Ac 3 transformation temperature as an indicator of the decarburization performance, which is calculated by Equation (1) below, is from 859 to 885°C, a maximum hardened diameter DI as an indicator of the hardening performance, which is calculated by Equation (2) below, is from 70 to 238 mm, and a temper hardness HRC as an indicator of the spring performance, which is calculated by Equation (3) below, is from 50 to 55. wherein, D 0 = 8.65 × C , f Si =1+0.64×Si, f Mn =1+4.10×%Mn, f P =1+2.83×%P, f S =1-0.62×%S, f Cu =1+0.27×%Cu, f Ni =1+0.52×%Ni, and f Cr =1+2.33×%Cr.
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机译：高强度弹簧用钢的Ac 3相变温度作为脱碳性能的指标，通过以下等式（1）计算得出，其温度为859至885°C，最大硬化直径DI作为硬化的指标由下面的等式（2）计算的性能为70至238mm，而由下面的等式（3）计算的作为弹簧性能指标的回火硬度HRC为50至55。其中，D 0 = 8.65×C，f Si = 1 + 0.64×Si，f Mn = 1 + 4.10×％Mn，f P = 1 + 2.83×％P，f S = 1-0.62×％S，f Cu = 1 + 0.27×％Cu，f Ni = 1 + 0.52×％Ni，f Cr = 1 + 2.33×％Cr。
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