Method for producing superfine steel wire from high-carbon carbon steel wire rod

A technology of carbon steel and thin steel wire, which is applied in the field of high-carbon carbon steel wire to produce ultra-fine steel wire, which can solve the problems of low production efficiency and long production cycle of ultra-fine steel wire, so as to ensure the strength performance index and improve production efficiency , the effect of reducing production costs

Active Publication Date: 2016-03-30
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defects of low production efficiency and long production cycle of existing ultra-fine steel wires, and provide a method for producing ultra-fine steel wires from high-carbon carbon steel wire rods that is efficient, simple, and economical

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] High-carbon carbon steel wire 1#, its C content is 0.70%wt, Mn content is 0.45%wt, Si content is 0.10%wt~0.35%wt, Cr content≤0.010%wt, Ni content≤0.010%wt, Al Content≤0.005%wt, N content≤0.005%wt, P content≤0.010%wt, S content≤0.005%wt; rolling diameter: φ6.5mm.

[0041] The method of producing wire 1# is as follows:

[0042] 1) Converter top-bottom composite blowing;

[0043] 2) Ladle blowing argon refining;

[0044] 3) Refining outside the furnace to obtain refined molten steel;

[0045] 4) Refined molten steel is poured into billets;

[0046] 5) The billet is austenitized in a heating furnace, and the billet is heated to a crystallization zone temperature of 1110±10°C;

[0047]6) Roll and spin the austenitized billet, the process is: rough rolling at 1110±10°C; then finish rolling, the starting temperature of finish rolling is controlled at 1010±10°C, and the final rolling temperature is controlled 1060±10°C; cooling through water, spinning at 951°C to obtain st...

Embodiment 2

[0055] High-carbon carbon steel wire 2#, its C content is 0.80%wt, Mn content is 0.40%wt, Si content is 0.10%wt~0.35%wt, Cr content≤0.010%wt, Ni content≤0.010%wt, Al Content≤0.005%wt, N content≤0.005%wt, P content≤0.010%wt, S content≤0.005%wt; rolling diameter: φ5.5mm.

[0056] The method of producing wire 2# is as follows:

[0057] 1) Converter top-bottom composite blowing;

[0058] 2) Ladle blowing argon refining;

[0059] 3) Refining outside the furnace to obtain refined molten steel;

[0060] 4) Refined molten steel is poured into billets;

[0061] 5) The billet is austenitized in a heating furnace, and the billet is heated to a crystallization zone temperature of 1240±10°C;

[0062] 6) Roll and spin the austenitized billet. The process is: rough rolling at 1240±10°C; 1100±10°C; cooling through water, spinning at 1049°C to obtain steel wire;

[0063] 7) Cool the steel wire, and stay in the range of 950-1000°C for 11s on the Stelmore air-cooled line. The cooling rate...

Embodiment 3

[0070] High-carbon carbon steel wire 3#, its C content is 0.90%wt, Mn content is 0.35%wt, Si content is 0.10%wt~0.35%wt, Cr content≤0.010%wt, Ni content≤0.010%wt, Al Content≤0.005%wt, N content≤0.005%wt, P content≤0.010%wt, S content≤0.005%wt; rolling diameter: φ6.5mm.

[0071] The method of producing wire 3# is as follows:

[0072] 1) Converter top-bottom composite blowing;

[0073] 2) Ladle blowing argon refining;

[0074] 3) Refining outside the furnace to obtain refined molten steel;

[0075] 4) Refined molten steel is poured into billets;

[0076] 5) The billet is austenitized in a heating furnace, and the billet is heated to a crystallization zone temperature of 1140±10°C;

[0077] 6) Roll and spin the austenitized billet. The process is: rough rolling at 1140±10°C; 1060±10°C; cooling through water, spinning at 1010°C to obtain steel wire;

[0078] 7) Cool the steel wire, and stay in the range of 950-970°C for 17s on the Stelmore air-cooled line. The cooling rate ...

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Abstract

The invention discloses a method for producing superfine steel wires from a high-carbon steel wire rod. The method comprises the steps of preparing a high-carbon steel wire rod with the C content of 0.60-1.20% and Mn content of 0.20-0.45%; removing oxide scale from the surface of the high-carbon steel wire rod, implementing primary continuous drawing for 7-15 times to obtain semi-finished steel wires, wherein an intermediate annealing process is omitted; implementing heat treatment and quenching; and continuously drawing for 15-25 times to obtain superfine steel wires. According to the method, a heating furnace process, a high-temperature rolling process and a delayed rapid cooling process are carried out in a wire rod production process, so as to produce a wire rod of which the strength and hardness are both lower than those of a conventional wire rod. The relatively soft high-carbon steel wire rod has excellent performance during cold processing, the drawing speed can be improved, and an annealing process is omitted in the drawing process because of low internal stress; and the wire rod can effectively improve the production efficiency of the steel wire, reduce production cost and guarantee a strength performance index of the steel wire.

Description

technical field [0001] The invention relates to the technical field of ultra-fine steel wires, in particular to a method for producing ultra-fine steel wires from high-carbon carbon steel wires. Background technique [0002] With the rapid development of the automobile, rubber industry, and road and bridge construction, the demand for high-strength, high-tenacity ultra-fine steel wire is also on the rise. At present, iron and steel metallurgical enterprises at home and abroad generally adopt the high-carbon steel wire drawing process with a carbon content greater than 0.60% to produce these special-purpose products. This process has the advantages of low production cost and obvious economic benefits, and has been widely promoted and accepted. application. [0003] When using the high-carbon carbon steel wire drawing process with a carbon content greater than 0.60% to produce ultra-fine (less than 0.5mm) high-carbon steel wire, it is necessary to undergo continuous cold-draw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/04C21D8/06B21C1/00B21C9/02
Inventor 蒋跃东桂江兵夏艳花周勇刘婳仇东丽吴超鲁修宇
Owner 武汉钢铁有限公司
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