High strength level non-quenched-tempered steel bar for manufacturing of engine rocker and manufacture method thereof
A non-quenched and tempered steel, engine technology, applied in the field of metallurgy, can solve the problems of heat treatment material consumption, unqualified performance, environmental pollution, etc.
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Embodiment 1
[0050] The high-strength level non-quenched and tempered steel round steel involved in this embodiment has a diameter of 36 mm, and its chemical composition and mass percentage are as follows: C: 0.46%, Si: 0.53%, Mn: 1.19%, P: 0.014%, S : 0.045%, Cr: 0.22%, Ni: 0.12%, Mo: 0.02%, Al: 0.005%, Ti: 0.002%, V: 0.16%, N: 0.015%, and the balance is Fe and unavoidable impurity elements.
[0051] The physical picture of the above round steel bar is as follows figure 1 Shown, the manufacture method of above-mentioned round steel bar is as follows:
[0052] Converter smelting-refining-vacuum degassing-continuous casting-continuous casting slab cooling-continuous casting slab heating-rolling-cooling-finishing-inspection-finished product storage.
[0053] More specifically: the smelting raw materials are smelted in a converter, after LF refining and vacuum degassing treatment, the arc continuous casting machine is used to continuously cast a rectangular continuous casting slab whose comp...
Embodiment 2
[0056] The high-strength level non-quenched and tempered steel round bar involved in this example has a diameter of 36mm, and its chemical composition and mass percentage are as follows: C: 0.44%, Si: 0.57%, Mn: 1.15%, P: 0.011 %, S: 0.053%, Cr: 0.20%, Ni: 0.11%, Mo: 0.02%, Al: 0.006%, Ti: 0.002%, V: 0.15%, N: 0.017%, the balance is Fe and unavoidable impurity elements.
[0057] The physical picture of the above round steel bar is as follows figure 1 Shown, the manufacture method of above-mentioned round steel bar is as follows:
[0058] Converter smelting-refining-vacuum degassing-continuous casting-continuous casting slab cooling-continuous casting slab heating-rolling-cooling-finishing-inspection-finished product storage.
[0059] More specifically: the smelting raw materials are smelted in a converter, after LF refining and vacuum degassing treatment, the arc continuous casting machine is used to continuously cast a rectangular continuous casting slab whose composition m...
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