Steel wire rod for 2000 MPa-grade spring and production method of wire rod
A production method and wire rod technology, applied in the field of spring wire rod and its production, 2000MPa spring wire rod, can solve the problems of harsh service conditions, uneven springs, poor purity, etc., to achieve purity optimization, gold Optimized phase structure and excellent comprehensive performance
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[0031]The technical solutions of the present invention will be further described below in conjunction with specific embodiments, but the scope of protection is not only limited to the description thereof.
[0032]In this embodiment, a high-strength spring disc is provided, in particular a wheel strip for the 2000 MPa stage spring, that is, the disc can be prepared into a 2000 MPa stage spring by a known existing spring preparation process.
[0033]Specifically, the chemical composition of the disc is: 0.53 ~ 0.57%, Si: 1.51 ~ 1.59%, Mn: 0.63 ~ 0.7%, CR: 0.01 ~ 0.1%, CR: 0.63 ~ 0.7%, CR: 0.01 ~ 0.1% Ni: 0.01 ~ 0.1%, MO: 0.01 ~ 0.05%, Nb: 0.01 ~ 0.05%, S ≤ 0.005%, o ≤ 0.002%, Ti ≤ 0.001%, N ≤ 0.002%, margin is Fe and inevitable Impurities.
[0034]The design of the chemical composition of the disc in the present invention is designed without adding or less to add a valuable metal 1 rare earth element, and realizes the disc in terms of mechanical properties, uniformity, pureness, and metallogra...
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