Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A duplex stainless steel clad steel plate for seawater desalination and its manufacturing method

A technology of duplex stainless steel and clad steel plate, applied in the field of clad plate, can solve the problem of incompatibility of strength and corrosion resistance, and achieve the effect of high billet assembly efficiency, high mechanical properties, and high intergranular corrosion resistance.

Active Publication Date: 2021-07-20
ANGANG STEEL CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a duplex stainless steel clad steel plate for seawater desalination and its manufacturing method, which solves the problem that the strength and corrosion resistance cannot be matched. The corrosion resistance, shear strength and bonding strength all maintain a high level, fully meeting the requirements of steel for seawater desalination engineering composite panels

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A duplex stainless steel clad steel plate for seawater desalination and its manufacturing method
  • A duplex stainless steel clad steel plate for seawater desalination and its manufacturing method
  • A duplex stainless steel clad steel plate for seawater desalination and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1 Manufacturing method of duplex stainless steel clad steel plate for seawater desalination. The production process includes billet formation, heating, and rolling. The steel plate specification is: (12+2)×3200×11000mm (thickness×width×length), wherein 1 thickness is 12mm, S32205 duplex stainless steel 2 thickness is 2mm. Specifically:

[0064] (1) Billet assembly: the steel billet smelted according to the chemical composition design is carried out for billet rolling; the thickness of the carbon steel billet is 108mm, and the thickness of the S32205 duplex stainless steel intermediate billet is 18mm, and the surface cleaning of the composite surface is carried out by a milling machine; The duplex stainless steel billet is sent to the drying furnace for drying treatment, the drying temperature is between 280°C and 300°C, and the drying time is 2 hours; two layers of S32205 duplex stainless steel are assembled and welded, and the two layers of S32205 duplex sta...

Embodiment 2

[0068] Embodiment 2 Manufacturing method of duplex stainless steel clad steel plate for seawater desalination. The production process includes billet formation, heating, and rolling. The steel plate specification is: (16+3)×3000×10000mm (thickness×width×length), wherein 1 Thickness is 16mm, S32205 duplex stainless steel 2 Thickness is 3mm. Specifically:

[0069] (1) The steel billet smelted according to the chemical composition design will be opened and rolled; the thickness of the carbon steel billet is 128mm, and the thickness of the S32205 duplex stainless steel middle billet is 24mm. The billet is sent to the drying furnace for drying treatment, the drying temperature is between 250°C and 280°C, and the drying time is 2 hours; two layers of S32205 duplex stainless steel are assembled and welded, and the spacer surface is between the two layers of S32205 duplex stainless steel. Two layers of S32205 duplex stainless steel are assembled with carbon plates up and down, the st...

Embodiment 3

[0073] Embodiment 3 Manufacturing method of duplex stainless steel clad steel plate for seawater desalination. The production process includes billet formation, heating, and rolling. The steel plate specification is: (10+3)×3200×11000mm (thickness×width×length), wherein 1 Thickness is 12mm, S32205 duplex stainless steel 2 Thickness is 3mm. Specifically:

[0074] (1) The steel billets designed and smelted according to the chemical composition will be opened and rolled; the thickness of the carbon steel billet is 90mm, and the thickness of the S32205 duplex stainless steel middle billet is 27mm. The billet is sent to the drying furnace for drying treatment, the drying temperature is between 250°C and 280°C, and the drying time is 2 hours; two layers of S32205 duplex stainless steel are assembled and welded, and the spacer surface is between the two layers of S32205 duplex stainless steel. Two layers of S32205 duplex stainless steel are assembled with carbon plates up and down, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
shear strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a duplex stainless steel composite steel plate for seawater desalination. The base material is carbon steel. The base material components in weight percentage are: C≤0.24%, Si≤0.55%, Mn≤1.6%, P≤0.035%, S ≤0.035%, Cr≤0.3%, Ni≤0.3%, Cu≤0.3%, the balance is Fe and unavoidable impurity elements; the composite material is two-way stainless steel, and its composition by weight percentage is: C≤0.03%, Mn ≤2.0%, Si≤1.0%, P≤0.030%, S≤0.020%, Cr: 22%‑23%, Ni: 4.5%‑6.5%, Mo: 3%‑3.5%, N: 0.14%‑0.20% , Nb: 0.020%-0.030%, the balance is Fe and inevitable impurity elements. The addition of Nb to composite material S32205 prevents the reduction of chromium element concentration caused by the combination of chromium and carbon in the steel to form chromium carbides, which leads to a decrease in corrosion resistance, especially intergranular corrosion. The composite plate composite effect is good, the shear strength of the interface is above 350MPa, and the flaw detection can meet the standard bonding rate level I requirements of GB / T 8165 "Stainless Steel Composite Steel Plate and Steel Strip", that is, 100% bonding.

Description

technical field [0001] The invention relates to a composite plate, in particular to a duplex stainless steel composite steel plate for seawater desalination and a manufacturing method thereof. Background technique [0002] With the development of modern industry and the emergence of various new technologies and materials, people have higher requirements for the performance of materials, and the performance of single component materials has been difficult to meet the requirements. An important direction of development in the field of engineering. The layered metal composite board is composed of two metal plates with different properties through special processing and preparation methods. Compared with a single metal component, the layered composite board after reasonable design and combination combines two metal components With their respective advantages, physical and chemical properties that a single metal does not have can be obtained. [0003] At present, stainless stee...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/42C22C38/44C22C38/48C22C38/58B21C37/02B32B15/01B32B15/18
CPCB21C37/02B32B15/011C22C38/001C22C38/02C22C38/04C22C38/42C22C38/44C22C38/48C22C38/58
Inventor 石锋涛欧阳鑫隋松言王超曲帅李文斌范刘群冯丹竹孙殿东胡昕明
Owner ANGANG STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com