Production process of vehicle damping spring steel 65Mn wire rod
The invention discloses a production process of a vehicle damping spring steel 65Mn wire rod. The damping spring steel 65Mn wire rod comprises the following chemical components in percentage by weight: 0.62%-0.68% of C, 0.17%-0.30% of Si, 0.90%-1.00% of Mn, less than or equal to 0.015% of P, less th...
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Main Authors | , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
22.02.2022
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a production process of a vehicle damping spring steel 65Mn wire rod. The damping spring steel 65Mn wire rod comprises the following chemical components in percentage by weight: 0.62%-0.68% of C, 0.17%-0.30% of Si, 0.90%-1.00% of Mn, less than or equal to 0.015% of P, less than or equal to 0.015% of S and the balance of Fe and inevitable impurities. The production process comprises the steps of molten iron desulphurization, smelting in a converter, argon blowing, LF refining, continuous casting, square billet heating, high-speed wire rolling and Stelmor controlled cooling. Compared with the prior art, the equipment advantages of a high-speed wire rod unit are utilized, and a finishing mill of an 8 + 4 type and a reducing and sizing unit are adopted for high-temperature rolling of a steel wire rod. By optimizing a heating system before rolling, controlling rolling and controlling a cooling process, the surface decarburization of the wire rod is reduced, the fatigue life of a finished sp |
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Bibliography: | Application Number: CN202111369513 |