630 stainless steel plate and preparation method thereof

A stainless steel and plate technology, applied in the field of 630 stainless steel plate and its preparation, can solve the problems that cannot guarantee the performance of strength and toughness, tensile strength, yield strength, general elongation and shrinkage, etc., and achieve steelmaking Simple equipment requirements, excellent mechanical properties, and the effect of reducing the difference in vertical and horizontal performance of plates

Active Publication Date: 2022-01-28
JIANGXI BAOSHUNCHANG SPECIAL ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: provide a kind of 630 stainless steel plates, to solve the problem that the current conventional 630 martensitic stainless steel tensile strength, yield strength and elongation, shrinkage are all relatively general, can not well guarantee the strength and The problem of toughness performance

Method used

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  • 630 stainless steel plate and preparation method thereof
  • 630 stainless steel plate and preparation method thereof
  • 630 stainless steel plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A 630 stainless steel plate, the 630 stainless steel plate includes the following raw materials in parts by mass: C: 0.03%, Cr: 15.00%, Ni: 3.00%, Nb: 0.10%, Cu: 3.00%, N: 0.02%, Al: 0.01%, the balance being iron and inevitable impurities.

[0046] The preparation method of the 630 stainless steel plate comprises the following steps:

[0047] S1: Select industrial pure iron, ferrosilicon, metal chromium, ferroniobium (above FeNb-50), electrolytic nickel, metal Mn, electrolytic copper, and ferrochromium nitride as raw materials, and load the raw materials into the furnace in batches for smelting,

[0048] S2: Lay 20% fluorite + 80% lime as bottom slag, the dosage is 20±2kg, cover the slag as soon as possible, reduce the inhalation, deduct the metal Mn, ferroniobium, and ferrochromium nitride, and add the remaining raw materials in batches during the melting period: ;

[0049] S3: Pre-deoxidation, add 2kg of SiCa block, 1kg of Al block, add manganese (added at 0.4%), fe...

Embodiment 2

[0069] 630 stainless steel plate, the 630 stainless steel plate includes the following raw materials in parts by mass: C: 0.07%, Mn: 1.000%, P: 0.04%, S: 0.03%, Si: 1.00%, Cr: 17.50%, Ni: 5.00%, Nb: 0.50%, Cu: 5.00%, N: 0.06%, Al: 0.06%, and the balance is iron and inevitable impurities.

[0070] The preparation method is the same as in Example 1.

Embodiment 3

[0072] A 630 stainless steel plate, the 630 stainless steel plate includes the following raw materials in parts by mass: C: 0.05%, Mn: 0.50%, Si: 0.50%, Cr: 15.80%, Ni: 4.30%, Nb: 0.30%, Cu: 3.40%, N: 0.04%, Al: 0.02%, and the balance is iron and inevitable impurities.

[0073] The preparation method is the same as in Example 1.

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Abstract

The invention discloses a 630 stainless steel plate. The 630 stainless steel plate is prepared from the following raw materials in parts by mass: 0.03 to 0.07 percent of C, 0 to 1.000 percent of Mn, 0 to 0.04 percent of P, 0 to 0.03 percent of S, 0 to 1.00 percent of Si, 15.00 to 17.50 percent of Cr, 3.00 to 5.00 percent of Ni, 0.10 to 0.50 percent of Nb, 3.00 to 5.00 percent of Cu, 0.02 to 0.06 percent of N, 0.01 to 0.06 percent of Al and the balance of iron and inevitable impurities. The invention further provides a preparation method of the 630 stainless steel plate. The 630 stainless steel plate prepared through the method is very excellent in strength, ductility and shrinkage rate performance and has the high commercialization value.

Description

technical field [0001] The invention relates to the field of special alloys, and more particularly, to a 630 stainless steel plate and a preparation method thereof. Background technique [0002] Martensitic stainless steel refers to stainless steel whose mechanical properties can be adjusted by heat treatment. The typical grade is Cr13 type, such as 2Cr13, 3Cr13, 4Cr13 and so on. After quenching, the hardness is high, and different tempering temperatures have different combinations of strength and toughness. It is mainly used for steam turbine blades, tableware, and surgical instruments. According to the difference of chemical composition, martensitic stainless steel can be divided into martensitic chromium steel and martensitic chromium-nickel steel. According to the different structure and strengthening mechanism, it can also be divided into martensitic stainless steel, martensitic and semi-austenitic (or semi-martensitic) precipitation hardening stainless steel and mara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/02C22C38/48C22C38/42C22C38/06C22C33/06C22B9/18C21D1/26C21D8/02C21D3/06
CPCC22C38/04C22C38/02C22C38/48C22C38/42C22C38/001C22C38/06C22C33/06C22B9/18C21D1/26C21D8/0226C21D8/0263C21D3/06C21D2211/008
Inventor 季宏伟廉斌林玉
Owner JIANGXI BAOSHUNCHANG SPECIAL ALLOY CO LTD
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