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Textile fuzzing flexible card clothing steel wire rod and manufacturing method thereof

A manufacturing method and elastic needle technology, applied in the field of iron-based special wire rods, can solve the problems of material drawing work hardening, unfavorable deep drawing of steel wires, reduction of plasticity and toughness, etc., so as to improve strength and toughness, and inhibit grain growth. , reduce the effect of brittle fracture

Active Publication Date: 2019-10-01
JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of Nb, V, and Ti elements in steel has strong hardenability, increases tempering stability, has secondary hardening effect, and may reduce plasticity and toughness. In addition, adding Nb and V to steel can improve austenite stability. The cooling curve moves to the right, and the cooling of the wire rod and the intermediate heat treatment of the steel wire can easily generate a supercooled structure, which is not conducive to the deep drawing of the steel wire, resulting in hardening of the material during drawing and reducing the drawing performance

Method used

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  • Textile fuzzing flexible card clothing steel wire rod and manufacturing method thereof
  • Textile fuzzing flexible card clothing steel wire rod and manufacturing method thereof
  • Textile fuzzing flexible card clothing steel wire rod and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Melt 100 tons of molten steel, carry out continuous casting, and make a continuous casting slab with a cross-sectional size of 200mm×200mm. The chemical composition of the obtained continuous casting slab includes: C: 0.65-0.70%, Si: 0.20-0.30%, Mn: 0.70 ~0.80%, Cr: 0.20~0.30%, Al: 0.015~0.03%, S: ≤0.010%, P: ≤0.015%, Cu: ≤0.05%, Ca: ≤0.0010%, V≤0.005%, N: 0.0010 ~0.0060%, Mo: ≤0.02%, Ni: 0.02-0.10%, B: ≤0.0005%, and the balance is Fe and unavoidable impurity elements.

[0034] Heat the continuous casting slab to above 1110°C, control the residual oxygen in the furnace below 6%, heat it for 5 hours, and roll it after descaling with high-pressure water: the rolling start temperature is 1000-1100°C, and the rolling process is divided into 39 passes In the first rolling, the rolling speed is set at 100m / s, and the spinning temperature is controlled at 830-950°C; after rolling, the wire rod is air-cooled through the Stelmo cooling line, in order to achieve a balanced coolin...

Embodiment 2

[0036] Melt 100 tons of steel with the chemical composition shown below, carry out continuous casting, and make a continuous casting slab with a cross-sectional size of 390mm*510mm. The chemical composition of the obtained continuous casting slab includes: C: 0.70-0.75%, Si: 0.2~0.30%, Mn: 0.6~0.7%, Cr: 0.15~0.25%, Al: 0.015~0.03%, S: ≤0.010%, P: ≤0.015%, Cu: ≤0.05%, Ca: ≤0.0010%, V≤0.005%, N: 0.0010-0.0060%, Mo: ≤0.02%, Ni: 0.02-0.10%, B: ≤0.0005%, and the balance is Fe and unavoidable impurity elements.

[0037] The continuous casting billet is heated and diffused at a high temperature of about 1250°C, and the high temperature is guaranteed for more than 4 hours, and then the billet is opened into a 210mm*210mm intermediate billet. The intermediate billet is peeled, and the continuous casting billet is heated to above 1110°C. Control it below 6%, keep warm for 4 hours, and roll after descaling with high-pressure water: the rolling start temperature is 1000-1100°C, the rollin...

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Abstract

The invention relates to a textile fuzzing flexible card clothing steel wire rod and belongs to the technical field of the special steel wire rods. The wire rod meets the conditions that the tensile strength is 1000-1200 Mpa, and the reduction of area is greater than 45%; a microstructure of the steel wire rod meeting the tensile property comprises 85% or more of the sorbite content and the balance ferrite; the sorbite interlamellar spacing is uniformly controlled, wherein the interlamellar spacing is stable at 0.08-0.20 [mu]m; nonmetallic inclusions in the wire rod are evaluated according toGB / T10561; Ds type inclusions are stable at 0.5 level or less, and the deep drawing of the wire rod can be met; and the wire rod with the diameter of 5.5 mm can be drawn into a thin steel wire with the diameter of 0.2 mm, and then quenched and tempered into a flexible card clothing.

Description

technical field [0001] The invention relates to an iron-based special wire rod, in particular to a steel wire rod for wet-raised elastic card clothing in the textile field and a production method thereof. Background technique [0002] In recent years, the demand for textile fleece products has been increasing, resulting in a shortage of fleece elastic card clothing. High-grade fleece elastic wire steel wires are mainly imported from Japan and Germany. Imported card clothing cannot be established for a long time due to factors such as long delivery cycle and high cost. The domestic urgent need Develop high-grade raised elastic card clothing wire rod. [0003] Raised elastic card clothing steel wire processing technology: 5.5mm wire rod—drawing—heat treatment—drawing until the final product diameter is as thin as about 0.2mm—steel wire quenching and tempering—finished product. In order to avoid brittle fracture of the material during needle bending and use, higher requirement...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/18C22C38/20C22C38/22C22C38/24C22C38/32C22C38/40C22C38/42C22C38/44C22C38/46C22C38/54C21D8/06
CPCC21D8/065C22C38/02C22C38/04C22C38/06C22C38/18C22C38/20C22C38/22C22C38/24C22C38/32C22C38/40C22C38/42C22C38/44C22C38/46C22C38/54
Inventor 钱刚许晓红白云张剑锋陈海燕孙中伟刘海陈德朱国荣何佳锋张奇毅
Owner JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
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