Production method of wire rod for ratchet ring
A production method and a ratchet ring technology, applied in the field of iron and steel metallurgy, can solve the problems of reduced V content, little impact on mechanical properties, and large impact on mechanical properties, and achieve the effects of low strength, easy cold working deformation, and reduced production costs.
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Embodiment 1
[0023] Production of φ12mm hot-rolled wire rod, converter smelting molten steel, LF refining, RH refining, continuous casting into a square billet, the size is 150mm×150mm, the chemical composition of the billet is: C: 0.40%, Si: 0.25%, Mn: 0.70%, P: 0.015%, S: 0.015%, Cr: 0.90%, V: 0.12%, Al: 0.015%, the balance is Fe and unavoidable impurity elements;
[0024] Heat the square steel billet to 1080°C and keep it warm for 90 minutes; after the heat preservation is completed, descale the surface, and then go through rough rolling, finish rolling, and sizing in turn. After rolling, the required size is reached, and the final rolling entrance temperature is controlled at 882°C , the spinning temperature is controlled at 890°C;
[0025] Entering the Stelmore roller table, the average roller table speed is 0.25m / s, and the fan and heat preservation cover are all closed.
[0026] The φ12mm hot-rolled wire rod produced in this embodiment has a test structure of ferrite+pearlite (see ...
Embodiment 2
[0028] Production of φ15mm hot-rolled wire rod, converter smelting molten steel, LF refining, RH refining, continuous casting into a square billet, the size is 150mm×150mm, the chemical composition of the billet is: C: 0.38%, Si: 0.17%, Mn: 0.70%, P: 0.010%, S: 0.006%, Cr: 0.90%, V: 0.11%, Al: 0.020%, the balance is Fe and unavoidable impurity elements;
[0029] Heat the square billet to 1090°C and keep it warm for 100 minutes; after the heat preservation is completed, descale the surface, and then go through rough rolling, finish rolling, and sizing in turn. After rolling, the required size is reached, and the final rolling entrance temperature is controlled at 890°C , the spinning temperature is controlled at 880°C;
[0030] Entering the Stelmore roller table, the average roller table speed is 0.26m / s, and the fan and heat preservation cover are all closed.
[0031] The φ15mm hot-rolled wire rod produced in this embodiment has a test structure of ferrite+pearlite (see fig...
Embodiment 3
[0033] Production of φ18mm hot-rolled wire rod, converter smelting molten steel, LF refining, RH refining, continuous casting into a square billet, the size is 150mm×150mm, the chemical composition of the billet is: C: 0.42%, Si: 0.35%, Mn: 0.80%, P: 0.015%, S: 0.014%, Cr: 1.10%, V: 0.20%, Al: 0.04%, the balance is Fe and unavoidable impurity elements;
[0034] Heat the square billet to 1110°C and keep it warm for 120 minutes; after the heat preservation is completed, descale the surface, and then go through rough rolling, finish rolling, and sizing in turn. After rolling, the required size is reached, and the temperature at the entrance of the final rolling is controlled at 900°C , the spinning temperature is controlled at 900°C;
[0035] Entering the Stelmore roller table, the average roller table speed is 0.27m / s, and the fan and heat preservation cover are all closed.
[0036] The φ18mm hot-rolled wire rod produced in this embodiment has a test structure of ferrite+pearli...
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Abstract
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