Hard wire steel wire rod

A steel wire rod and hard wire technology, applied in the field of steel forming, can solve the problems of substandard drawing performance and low degree of sorbitization, so as to overcome the surface decarburization of castings, high degree of sorbitization and uniform cooling Effect

Inactive Publication Date: 2015-03-25
CHONGQING IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, it is necessary to develop a new type of hard wire steel wire rod to solve the problems of low sorbitization degree and substandard drawing performance of existing steel wire rods

Method used

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Examples

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Embodiment 1

[0029] The method for preparing the hard wire steel wire rod in this embodiment comprises the following steps:

[0030] 1), smelting: the molten steel melt is smelted by converter + LF refining;

[0031] In this embodiment, the smelting process parameters are shown in Table 2, Example 1.

[0032] 2), casting: the molten steel of continuous casting step 1) is cast slab;

[0033] In the present embodiment: continuous casting process parameter and casting quality are as shown in table 2 embodiment 1;

[0034] 3), heating: the heating in this embodiment is carried out in three sections, and the heating process parameters of each section are as shown in Table 3, Example 1.

[0035] 4), rolling: rolling the slab heated in step 3) in the order of rough rolling→intermediate rolling→pre-finish rolling→finish rolling. In this embodiment, a total of 28 stands of continuous rolling units are used for rolling, and the first 18 stands Horizontal-vertical alternate arrangement, every grou...

Embodiment 2

[0039] The method for preparing the hard wire steel wire rod in this embodiment comprises the following steps:

[0040] 1), smelting: the molten steel melt is smelted by converter + LF refining;

[0041] In this embodiment, the smelting process parameters are shown in Table 2, Example 2.

[0042] 2), casting: the molten steel of continuous casting step 1) is cast slab;

[0043] In the present embodiment: continuous casting process parameter and casting quality are as shown in table 2 embodiment 2;

[0044] 3), heating: the heating in this embodiment is carried out in three sections, and the heating process parameters of each section are as shown in Table 3, Example 2.

[0045] 4), rolling: rolling the slab heated in step 4) in the order of rough rolling→intermediate rolling→pre-finish rolling→finish rolling. In this embodiment, a total of 28 stands of continuous rolling units are used for rolling, and the first 18 stands Horizontal-vertical alternate arrangement, every grou...

Embodiment 3

[0049] The method for preparing the hard wire steel wire rod in this embodiment comprises the following steps:

[0050] 1), smelting: the molten steel melt is smelted by converter + LF refining;

[0051] In this embodiment, the smelting process parameters are shown in Table 2, Example 3.

[0052] 2), casting: the molten steel of continuous casting step 1) is cast slab;

[0053] In the present embodiment: continuous casting process parameter and casting quality are as shown in table 2 embodiment 3;

[0054] 3), heating: the heating in this embodiment is carried out in three sections, and the heating process parameters of each section are as shown in Table 3, Example 3.

[0055] 4), rolling: rolling the slab heated in step 4) in the order of rough rolling→intermediate rolling→pre-finish rolling→finish rolling. In this embodiment, a total of 28 stands of continuous rolling units are used for rolling, and the first 18 stands Horizontal-vertical alternate arrangement, every grou...

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Abstract

The invention discloses a hard wire steel wire rod. The hard wire steel wire rod is prepared from the following components in percentage by mass: 0.78-0.82% of C, 0.18-0.25% of Si, 0.60-0.65% of Mn, not greater than 0.018% of P, not greater than 0.010% of S, not greater than 0.015% of [Al], not greater than 0.015% of As, not greater than 0.10% of Cr, not greater than 0.10% of Ni, not greater than 0.10% of Cu, not greater than 0.10% of other inevitable impurity elements and the balance of Fe. The average sorbitic level of the hard wire steel wire rod is not smaller than 90%, the section shrinkage rate of the hard wire steel wire rod is not smaller than 31% and the tensile strength of the hard wire steel wire rod is not smaller than 1100Mpa. According to the hard wire steel wire rod disclosed by the invention, the types, the content and the preparation process of each element are regulated, so that the sorbitizing degree of the steel wire rod is high; meanwhile, the hard wire steel wire rod has excellent shaping and strength, and is an ideal raw material for preparing subsequent products.

Description

technical field [0001] The invention belongs to the field of steel forming, and relates to a hard wire steel wire rod for producing high-strength steel wire and steel strand, in particular to a hard wire steel wire rod with high sorbite degree and excellent drawing performance. Background technique [0002] Hard wire steel wire rod is the main raw material for producing low relaxation stress steel wire, steel wire rope, steel strand, spring steel wire and galvanized steel wire. In the process of producing the above-mentioned products by using hard wire steel wire rod, it needs to go through multi-pass drawing and torsion deformation, and the cumulative deformation rate can reach more than 90%. Therefore, the performance of the hard wire steel wire rod itself, such as the degree of sorbitization, the depth of the decarburization layer, the tensile strength and the reduction of area, the surface quality, the control of residual elements and inclusions, the degree of porosity a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/42C22C38/20C22C38/16C22C38/04C22C33/04C21D8/02
CPCC22C38/02C21D8/0205C21D8/0226C22C38/002C22C38/04C22C38/06C22C38/08C22C38/16C22C38/18
Inventor 肖亚王绍斌彭雄张景惠向浪涛李斌卿俊峰汪涛戴林王允
Owner CHONGQING IRON & STEEL CO LTD
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