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Nonmagnetic soft stainless steel wire rod or stainless steel plate and method of manufacturing same

A stainless steel plate, stainless steel technology, applied in the direction of manufacturing converters, etc., can solve the problems of high nickel and high price

Active Publication Date: 2010-04-07
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For soft non-magnetic stainless steel that requires good cold working performance, generally high-nickel, low-carbon, low-nitrogen austenitic stainless steel or high-nickel, copper-containing steel grades should be selected. Higher nickel, more expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The mass percentage ratio of the chemical composition of the non-magnetic stainless steel wire rod of this embodiment is:

[0040] C: 0.015% Si: 0.30% Mn: 8.45% P: 0.025% S: 0.006%

[0041] Cr: 14.30% Ni: 6.10% N: 0.025% Cu: 2.60%

[0042] The rest is Fe and inevitable impurities.

[0043] The specification of the non-magnetic stainless steel wire rod of this embodiment is 5.5 mm, the tensile strength is 460 Mpa, and the magnetic permeability is 1.02.

Embodiment 2

[0045] The mass percentage ratio of the chemical composition of the non-magnetic stainless steel wire rod in this embodiment is:

[0046] C: 0.020% Si: 0.29% Mn: 8.20% P: 0.030% S: 0.005%

[0047] Cr: 14.50% Ni: 6.30% N: 0.020% Cu: 2.62%

[0048] The rest is Fe and inevitable impurities.

[0049] The specification of the stainless steel wire rod in this embodiment is 11mm, the tensile strength is 470Mpa, and the magnetic permeability is 1.03.

Embodiment 3

[0051] The mass percentage ratio of the chemical composition of the non-magnetic stainless steel wire rod of this embodiment is:

[0052] C: 0.025% Si: 0.35% Mn: 8.60% P: 0.035% S: 0.010%

[0053] Cr: 14.43% Ni: 6.20% N: 0.026% Cu: 2.70%

[0054] The rest is Fe and inevitable impurities.

[0055] The specification of the stainless steel wire rod in this embodiment is 6.5mm, the tensile strength is 465Mpa, and the magnetic permeability is 1.03.

[0056] Example of steel plate

[0057] The mass percentage ratio of the chemical composition of the non-magnetic stainless steel plate of this embodiment is:

[0058] C: 0.018% Si: 0.40% Mn: 8.50% P: 0.028% S: 0.003%

[0059] Cr: 14.30% Ni: 6.50% N: 0.030% Cu: 2.75%

[0060] The rest is Fe and inevitable impurities.

[0061] The thickness of the stainless steel plate in this embodiment is 4.0 mm, the tensile strength is 475 Mpa, and the magnetic permeability is 1.02.

[0062] The internal structures of the above four embodiments are all austenite.

[0...

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Abstract

The invention relates to a nonmagnetic soft stainless steel wire rod or stainless steel plate and a method of manufacturing the same. The stainless steel wire rod or stainless steel plate comprises the following components: C which is more than 0 percent and is less than or equal to 0.050 percent, Si which is more than 0 percent and is less than or equal to 1.00 percent, Mn which is equal to 8.00-15.00 percent, P which is less than or equal to 0.045 percent, S which is less than or equal to 0.030 percent, Cr which is equal to 13.00-18.00 percent, Ni which is equal to 4.00-8.00 percent, Cu which is equal to 1.50-4.00 percent and N which is more than 0 percent and is less than or equal to 0.050 percent. The method of manufacturing the nonmagnetic soft stainless steel wire rod or stainless steel plate comprises the following steps: A, steel billet is made by the alloy of the molten iron, the Cr, the Ni, the Mn and the Cu, and the steel billet is cast continuously into the stainless steel square billet or the stainless steel slab; B, heating the stainless steel square billet or the stainless steel slab to 1240-1260 DEG C and preserving the temperature of the stainless steel square billet or the stainless steel slab at 1240-1260 DEG C for 1.5-3 hours; C, rolling the stainless steel square billet into the stainless steel wire rod which has a diameter of 5.5-20 mm, or rolling the stainless steel slab into the stainless steel plate which has a thickness of 3-8 mm and a width of 1000-1300 mm; D, reeling the stainless steel wire rod or the stainless steel plate; and E, cooling the stainless steel wire rod or the stainless steel plate. The stainless steel wire rod or the stainless steel plate which is manufactured with the method has good cold processing performance and low cost.

Description

Technical field [0001] The invention relates to a non-magnetic soft stainless steel wire rod or stainless steel plate and a manufacturing method thereof. Background technique [0002] Non-magnetic stainless steel can be divided into two categories according to the requirements of mechanical properties. One is the material that requires high strength and wear resistance, and the other is the soft steel that requires good cold workability. High-strength wear-resistant materials can add manganese and nitrogen elements to austenitic steel instead of precious nickel elements to obtain relatively inexpensive non-magnetic stainless steel. For soft non-magnetic stainless steels that require good cold workability, generally high-nickel, low-carbon, low-nitrogen austenitic stainless steel or high-nickel, copper-containing steel grades should be selected. Although it can be soft and non-magnetic, it contains The higher nickel is more expensive. [0003] The conventional soft non-magnetic s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C21C5/28C21C7/10C21C7/068C21D8/02C21D8/06
Inventor 王辉绵夏焱李颖张增武曹娇婵
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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