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Martensite stainless-steel composite steel plate and production method thereof

A technology of martensitic stainless steel and clad steel plate, applied in chemical instruments and methods, layered products, metal layered products, etc., can solve the problems of martensitic stainless steel and carbon steel compounding difficulties, and improve the comprehensive utilization rate of materials , cost reduction, excellent strength and toughness effect

Inactive Publication Date: 2016-08-17
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a martensitic stainless steel composite steel plate and its production method, which solves the problem of difficult compounding of martensitic stainless steel and carbon steel

Method used

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  • Martensite stainless-steel composite steel plate and production method thereof
  • Martensite stainless-steel composite steel plate and production method thereof
  • Martensite stainless-steel composite steel plate and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The chemical composition weight percentage content of the steel base material A516Gr70 carbon steel 1 is: C: 0.21%, Si: 0.25%, Mn: 1.17%, P: 0.015%, S: 0.0036%, the balance is Fe and unavoidable impurities element. Clad 410S martensitic stainless steel 2 chemical composition weight percent content is: C: 0.040%, Si: 0.53%, Mn: 0.26%, P: 0.016%, S: 0.003%, Cr: 12.9%, Ni: 0.12%, The balance is Fe and unavoidable impurity elements. .

[0018] The steel plate specifications are: (18+4)×2100×L mm (thickness×width×length), in which the thickness of the base layer A516Gr70 carbon steel 1 is 18mm, and the thickness of the cladding 410S martensitic stainless steel 2 is 4mm.

[0019] The production process includes: billet formation, heating, rolling, and heat treatment, specifically:

[0020] 1. The thickness of the base A516Gr70 carbon steel billet 1 is 126mm, and the thickness of the cladding 410S martensitic stainless steel billet 2 is 29mm. The surface of the billet is po...

Embodiment 2

[0027] The chemical composition weight percentage content of the steel base material A516Gr70 carbon steel 1 is: C: 0.2%, Si: 0.25%, Mn: 1.19%, P: 0.016%, S: 0.0035%, the balance is Fe and unavoidable impurities element. Clad 410S martensitic stainless steel 2 chemical composition weight percent content is: C: 0.043%, Si: 0.68%, Mn: 0.20%, Cr: 13.2%, Ni: 0.16%, P: 0.02%, S: 0.002%, The balance is Fe and unavoidable impurity elements.

[0028] The steel plate specification is: (16+4)×2000×L mm (thickness×width×length), in which the thickness of the base layer is 16mm, and the thickness of the stainless steel is 4mm.

[0029] The production process includes billet assembly, heating, rolling, and heat treatment, specifically:

[0030] 1. The thickness of the base A516Gr70 carbon steel billet 1 is 112mm, and the thickness of the cladding 410S martensitic stainless steel billet 2 is 29mm. The surface of the billet is cleaned to ensure the cleanliness of the composite surface; Ad...

Embodiment 3

[0037] The chemical composition weight percentage content of the steel base material A516Gr70 carbon steel 1 is: C: 0.22%, Si: 0.23%, Mn: 1.18%, P: 0.015%, S: 0.0032%, the balance is Fe and unavoidable impurities element. Clad 410S martensitic stainless steel 2 chemical composition weight percent content is: C: 0.040%, Si: 0.69%, Mn: 0.20%, Cr: 13.3%, Ni: 0.16%, P: 0.016%, S: 0.0014%, The balance is Fe and unavoidable impurity elements.

[0038] The steel plate specification is: (20+4)×2650×L mm (thickness×width×length), in which the thickness of the base layer A516Gr70 carbon steel 1 is 20mm, and the thickness of the cladding 410S martensitic stainless steel 2 is 4mm.

[0039] The production process includes billet assembly, heating, rolling, and heat treatment, specifically:

[0040]1. The thickness of the base A516Gr70 carbon steel billet 1 is 140mm, and the thickness of the cladding 410S martensitic stainless steel billet 2 is 29mm. The surface of the billet is cleaned t...

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Abstract

The invention provides a Martensite stainless-steel composite steel plate and a production method thereof, belonging to the technical field of production of stainless steel composite plates. The method is realized through the following process routes: steel billet combination, heating, rolling control and heat treatment, wherein pack rolling of double billets is adopted, i.e., the upper and lower layers adopt A516Gr70 carbon steel, and two middle layers adopt 410S Martensite stainless steel; an isolation agent is added between two layers of the Martensite stainless steel; four edges of the combined billet is welded and sealed; and a vacuum pump is utilized for vacuum pumping. The invention has the following advantages: the Martensite stainless-steel composite steel plate has excellent strength-toughness and mechanical property, improves comprehensive utilization rate of materials, and further reduces cost at the same time.

Description

technical field [0001] The invention belongs to the technical field of stainless steel composite plate production, and in particular relates to a martensitic stainless steel composite steel plate and a production method thereof. It is suitable for manufacturing pressure vessels for petrochemical industry. Background technique [0002] At present, some container equipment in petrochemical plants have higher and higher requirements for corrosion resistance of selected materials. General carbon steel and low-alloy steel have been difficult to meet the requirements, and only higher-grade materials, such as stainless steel, can be used. However, all stainless steel materials are used, and the problem of high cost is particularly prominent. An effective solution is to use stainless steel clad plates. Martensitic stainless steel clad plate is a composite material with martensitic stainless steel as the cladding layer and carbon steel as the base layer. Compared with ordinary aust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01B32B15/18C22C38/02C22C38/04C22C38/40C22C38/18C21D8/02
CPCC21D8/0226C21D8/0247C22C38/02C22C38/04C22C38/18C22C38/40B32B15/011C21D2211/008B32B2307/558B32B2255/06B32B2255/20
Inventor 张海王小勇刘建明李永东王志勇黄乐庆马长文孙启昆王建国
Owner SHOUGANG CORPORATION
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