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630 stainless steel plate and its preparation method

A stainless steel and plate technology, applied in the field of 630 stainless steel plate and its preparation, can solve the problems of performance, tensile strength, yield strength, elongation, shrinkage, etc. that cannot well guarantee strength and toughness, and achieve steelmaking. Simple equipment requirements, excellent mechanical properties, and simple preparation methods

Active Publication Date: 2022-05-10
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 its preparation method
  • 630 stainless steel plate and its preparation method
  • 630 stainless steel plate and its preparation method

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 is iron and unavoidable impurities.

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

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

[0048] S2: Lay 20% fluorite + 80% lime as the bottom slag, the dosage is 20±2kg, cover the slag early, reduce air absorption, deduct metal Mn, ferro-niobium, and ferrochromium nitride, and add the rest of the raw materials in batches during the melting period: ;

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

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 unavoidable 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 unavoidable 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 comprises the following raw materials in parts by mass: C: 0.03-0.07%, Mn: 0-1.000%, P: 0-0.04%, S: 0-0.03 %, Si: 0‑1.00%, Cr: 15.00‑17.50%, Ni: 3.00‑5.00%, Nb: 0.10‑0.50%, Cu: 3.00‑5.00%, N: 0.02‑0.06%, Al: 0.01‑0.06% , the balance is iron and unavoidable impurities; the invention also provides a preparation method of the 630 stainless steel plate. The strength, elongation and shrinkage of the 630 stainless steel plate prepared by the invention are excellent, and have high commercial value.

Description

technical field [0001] The invention relates to the field of special alloys, in particular 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 through heat treatment. In layman's terms, it is a type of hardenable stainless steel. Typical grades are Cr13 type, such as 2Cr13, 3Cr13, 4Cr13 and so on. After quenching, the hardness is higher, 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 in chemical composition, martensitic stainless steel can be divided into two types: martensitic chromium steel and martensitic chromium-nickel steel. According to the structure and strengthening mechanism, it can also be divided into martensitic stainless steel, martensitic and semi-austenitic (or semi-m...

Claims

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Application Information

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Patent Type & Authority Patents(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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