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Production method of steel for tire bead wires

A technology of bead steel wire and production method, which is applied in the field of iron and steel metallurgy, and can solve problems such as increased production costs, increased billet rolling, continuous casting billet flaw detection, continuous casting billet peeling/grinding costs, and molten steel pollution.

Active Publication Date: 2021-05-07
ANYANG IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inevitable system defects of the above-mentioned technological process are as follows: 1) The molten iron pretreatment and vacuum treatment process used increase the production cost; Components pollute the molten steel; 3) The electromagnetic stirring in the casting strand area and the terminal electromagnetic stirring are used, and the cooling water and power consumption increase; 4) The continuous casting bloom requires secondary blooming, which increases the billet rolling, Continuous casting slab flaw detection, continuous casting slab peeling / grinding cost

Method used

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  • Production method of steel for tire bead wires

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Effect test

Embodiment 1

[0042] A production method of steel for bead wires provided in this embodiment includes steelmaking, continuous casting and steel rolling processes. The continuous casting slab section size produced by continuous casting is: 150mm×150mm, and the original wire rod size of the obtained product is

[0043] The specific production process is: top-bottom compound blown converter → LF ladle refining furnace → R8 m arc 6-machine 6-strand billet continuous casting machine → 150mm×150mm cross-section continuous casting billet → high-speed wire rod rolling mill controlled rolling → Stelmore wind Cold wire controlled cooling→ Specifications of bead wire for hot-rolled wire rod.

[0044] The key control parameters are: (1) blast furnace molten iron + self-produced returned scrap steel, molten iron temperature 1320°C, molten iron composition content: P = 0.075wt%, S = 0.045wt%, Ti = 0.0032wt%; Carbon" operation, the end-point C content is 0.53wt%, the end-point temperature is 1583°C, c...

Embodiment 2

[0046] A production method of steel for bead wires provided in this embodiment includes steelmaking, continuous casting and steel rolling processes. The continuous casting slab section size produced by continuous casting is: 150mm×150mm, and the original wire rod size of the obtained product is

[0047]The specific production process is: top-bottom compound blown converter → LF ladle refining furnace → R8 m arc 6-machine 6-strand billet continuous casting machine → 150mm×150mm cross-section continuous casting billet → high-speed wire rod rolling mill controlled rolling → Stelmore wind Cold wire controlled cooling → Specifications of bead wire for hot-rolled wire rod.

[0048] The key control parameters are: (1) blast furnace molten iron + self-produced returned scrap steel, molten iron temperature 1345°C, molten iron composition content: P = 0.060wt%, S = 0.050wt%, Ti = 0.0040wt%; Carbon" operation, the end-point C content is 0.58wt%, the end-point temperature is 1579°C, c...

Embodiment 3

[0050] A production method of steel for bead wires provided in this embodiment includes steelmaking, continuous casting and steel rolling processes. The continuous casting slab section size produced by continuous casting is: 150mm×150mm, and the original wire rod size of the obtained product is

[0051] The specific production process is: top-bottom compound blown converter → LF ladle refining furnace → R8 m arc 6-machine 6-strand billet continuous casting machine → 150mm×150mm cross-section continuous casting billet → high-speed wire rod rolling mill controlled rolling → Stelmore wind Cold wire controlled cooling → Specifications of bead wire for hot-rolled wire rod.

[0052] The key control parameters are: (1) blast furnace molten iron + self-produced returned scrap steel, molten iron temperature 1370°C, molten iron composition content: P = 0.080wt%; S = 0.040wt%; Ti = 0.0022wt%; Carbon" operation, the end-point C content is 0.61wt%, the end-point temperature is 1571°C, ...

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Abstract

The invention discloses a production method of steel for tire bead wires, and relates to the technical field of ferrous metallurgy. The production method comprises the steps of converter smelting, ladle furnace refining, small square billet continuous casting and high-speed wire rolling, and specifically comprises the following steps: 1, adding scrap steel and blast furnace molten iron into a converter, and providing quality applicable conditions for the scrap steel and the molten iron; 2, controlling the endpoint carbon content of the converter to be 0.50 wt%-0.70 wt%; 3, controlling converter tapping; 4, conducting ladle furnace refining; 5, conducting small square billet continuous casting, conducting electromagnetic stirring through a crystallizer, and adopting aerial fog cooling for secondary cooling, wherein the continuous casting pulling speed is 2.0-2.3 m / min; and 6, conducting high-speed wire rod rolling, wherein a hot-rolled wire rod for the tire bead steel wires with the diameter phi being 5.5 mm is rolled through a high-speed wire rod rolling mill. According to the method, the technological processes of molten iron pretreatment and molten steel secondary vacuum treatment are reduced, electromagnetic stirring in a casting flow area and electromagnetic stirring at the tail end in continuous casting production are reduced, cogging of a casting blank, flaw detection of the casting blank, scaling of the casting blank or coping of the casting blank is reduced, the yield is increased, the equipment investment and the production cost are reduced, and the energy consumption is saved.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a production method of steel for bead wires. Background technique [0002] Bead wire is a high-carbon steel metal product with coating, which is used to strengthen rubber products, mainly used for rubber tires. Due to the trend of automobile lightweight, the strength of this kind of products is continuously improved, and the pullability and cleaning performance of steel materials are greatly improved. There are high requirements for uniformity and steel purity, and the production is difficult, and the technical requirements for smelting, rolling, processing and other processes are relatively high. [0003] At present, the main technological process of producing bead wire steel at home and abroad is: molten iron pretreatment (hot metal desulfurization / hot metal three desulfurization)→converter→ladle furnace refining→RH / VD vacuum treatment→bloom continuous casting...

Claims

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Application Information

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IPC IPC(8): C22C33/06C21C5/28C21C7/06C21C7/072B22D11/22B21C37/04
CPCC22C33/06C21C5/28C21C7/0025C21C7/06C21C7/072B22D11/225B21C37/04C21C2007/0093Y02P10/20
Inventor 曹树卫武宝庆杜亚伟杨晓奇杨俊锋陈占杰宋素格邓保全梁世勇董尉民贾黎杰李璟王小平王玉存吕亚范志成贾旭岗刘松赵振华杨雅玲杜玉兰
Owner ANYANG IRON & STEEL
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