Carbon steel and duplex stainless steel composite steel plate and production method thereof

A technology of duplex stainless steel and clad steel plate, used in temperature control, metal rolling, etc., to achieve the effect of good composite effect, good resistance to intergranular corrosion, and excellent strength and toughness.

Inactive Publication Date: 2016-07-20
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a carbon steel and duplex stainless steel clad steel plate and its production method, which solves the problem of making the clad plate have both the properties of stainless steel and carbon steel

Method used

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  • Carbon steel and duplex stainless steel composite steel plate and production method thereof
  • Carbon steel and duplex stainless steel composite steel plate and production method thereof
  • Carbon steel and duplex stainless steel composite steel plate and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The chemical composition of steel base Q245R carbon steel 1 in this experiment is C: 0.17%, Si: 0.25%, Mn: 0.9%, P: 0.01%, S: 0.00%, Alt: 0.04%, and the balance is Fe and unavoidable impurities element. The three components of the clad S32205 duplex stainless steel meet the requirements of the ASTMA240M-05 standard "Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plates, Sheets and Strips for Pressure Vessels and General Purposes", and the weight percentage is C: 0.03%, Mn: 1.2%, Si: 0.5%, and also contains Cr: 22.5%, Ni: 5%, Mo: 3% and other alloying elements to increase corrosion resistance. The steel plate specifications are: (10+3) mm thick × 2040 mm wide × 12000 mm long, of which Q245R carbon steel 1 has a thickness of 10 mm, and S32205 duplex stainless steel 3 has a thickness of 3 mm.

[0019] The production process includes billet assembly, heating, direct rolling, and air cooling, specifically:

[0020] (1) The steel billet designed and...

Embodiment 2

[0026] The chemical composition of steel base Q245R carbon steel 1 in this experiment is C: 0.17%, Si: 0.25%, Mn: 0.9%, P: 0.01%, S: 0.00%, Alt: 0.04%, and the balance is Fe and unavoidable impurities element. The three components of the clad S32205 duplex stainless steel meet the requirements of the ASTMA240M-05 standard "Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plates, Sheets and Strips for Pressure Vessels and General Purposes", and the weight percentage is C: 0.03%, Mn: 1.2%, Si: 0.5%, and also contains Cr: 22.5%, Ni: 5%, Mo: 3% and other alloying elements to increase corrosion resistance. The steel plate specifications are: (16+3) mm thick × 2060 mm wide × 12000 mm long, of which Q245R carbon steel 1 has a thickness of 16 mm, and S32205 duplex stainless steel 3 has a thickness of 3 mm.

[0027] The production process includes billet assembly, heating, direct rolling, water cooling, and tempering treatment, specifically:

[0028] (1) The st...

Embodiment 3

[0036] The chemical composition of steel base Q245R carbon steel 1 in this experiment is C: 0.17%, Si: 0.25%, Mn: 0.9%, P: 0.01%, S: 0.00%, Alt: 0.04%, and the balance is Fe and unavoidable impurities element. The three components of the clad S32205 duplex stainless steel meet the requirements of the ASTMA240M-05 standard "Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plates, Sheets and Strips for Pressure Vessels and General Purposes", and the weight percentage is C: 0.03%, Mn: 1.2%, Si: 0.5%, and also contains Cr: 22.5%, Ni: 5%, Mo: 3%, etc. to increase corrosion resistance alloying elements. The steel plate specifications are: (26+4) mm thick × 1860 mm wide × 12000 mm long, of which Q245R carbon steel 1 has a thickness of 26 mm, and S32205 duplex stainless steel 3 has a thickness of 4 mm.

[0037] The production process includes billet assembly, heating, direct rolling, and water cooling, specifically:

[0038] (1) The steel billet designed and s...

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Abstract

The invention discloses a carbon steel and duplex stainless steel composite steel plate and a production method of the steel plate, and belongs to the technical field of production of metal composite plates. The steel plate is completed through a steel billet assembly, heating, direct rolling, air cooling or water cooling and tempering process route. Symmetric composite assembly is adopted, the upper layer and the lower layer are Q245R carbon steel, S32205 duplex stainless steel is arranged on the two layers of the middle, scaling powder is not added into the position between the carbon steel and duplex stainless steel, a separant is added to the position between the duplex stainless steel, four-side welding and side sealing are carried out on a steel billet, and vacuumizing treatment is carried out. The carbon steel and duplex stainless steel composite steel plate has the beneficial effects of being good in composite effect and having the higher mechanical property and intergranular corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of metal composite plate production, and in particular relates to a carbon steel and duplex stainless steel composite steel plate and a production method thereof. It is suitable for the coastal environment and the manufacture of pipes and containers for conveying or holding seawater, pulp and other highly corrosive solutions. Background technique [0002] In view of the special strong corrosion environment such as seawater and pulp, ordinary carbon steel cannot meet the requirements of use. At present, the pipes and containers used in seawater desalination and pulp towers are mostly made of pure stainless steel. Because duplex stainless steel has good resistance to intergranular corrosion and stress corrosion cracking, it is widely used in seawater desalination and papermaking, such as S32304, 2205 Duplex stainless steel, etc. Although from the perspective of corrosion resistance, the corrosion resistance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B37/74C22C38/04C22C38/06C22C38/58C22C38/44
CPCB21B1/38B21B37/74B21B2001/386C22C38/04C22C38/06C22C38/44C22C38/58
Inventor 王小勇刘建明马长文李永东孙启昆王东杨冀黄乐庆张海王海宝秦丽晔
Owner SHOUGANG CORPORATION
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