Heat treatment method for antibacterial double-phase stainless steel material

A technology of duplex stainless steel and heat treatment method, which is applied in the field of duplex stainless steel materials, and can solve the problems of reduced corrosion resistance and increased sensitivity to intergranular corrosion

Active Publication Date: 2017-01-18
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the copper-containing duplex stainless steel after antibacterial aging treatment, because the Cu-rich phase such as ε-Cu on the surface becomes a weak point in the passivation film, it is very easy to become a nucleation source of pitting corrosion, resulting in the corrosion resistance of the material Reduced, and ε-Cu precipitated in the intergranular, making intergranular corrosion sensitivity increased

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
  • Heat treatment method for antibacterial double-phase stainless steel material
  • Heat treatment method for antibacterial double-phase stainless steel material
  • Heat treatment method for antibacterial double-phase stainless steel material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] According to the chemical composition range set by the antibacterial duplex stainless steel material, the present invention adopts 15 kilograms of vacuum induction furnaces to smelt 10 kilograms of the antibacterial duplex stainless steels in Example and Comparative Example. The chemical composition is shown in Table 1.

[0018] Antibacterial duplex stainless steel chemical composition (wt.%) of table 1 embodiment and comparative example

[0019]

[0020] According to the parameter range of the heat treatment method set by the antibacterial duplex stainless steel of the present invention, the formulated solid

[0021] The detailed parameters of solution temperature and solid solution time are shown in Table 2.

[0022] The heat treatment process parameter of table 2 embodiment and comparative example

[0023]

[0024]

[0025] 1. Determination of ferrite / austenite content percentage

[0026] According to the relevant standards of "ASTM E562 "Test Method for D...

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

No PUM Login to view more

Abstract

The invention aims to provide a heat treatment method for antibacterial double-phase stainless steel. The antibacterial double-phase stainless steel can have an effective antibacterial function in the condition of single heat treatment. The heat treatment method is characterized in that antibacterial heat treatment is solid solution treatment; the temperature for the solid solution treatment is 1,050 to 1,250 DEG C; and the temperature is preserved for 5 to 20 hours and then is water-cooled to room temperature. Meanwhile, the antibacterial double-phase stainless steel has two phases of stable structures, namely, stable ferrite / austenite, and can be widely applied to the material fields of chemical industry, petroleum energy, power plants, ocean engineering and the like.

Description

technical field [0001] The invention relates to the technical field of duplex stainless steel materials, in particular to a heat treatment method for antibacterial duplex stainless steel materials. Using a unique heat treatment process, the ferrite ratio in copper-containing duplex stainless steel can be adjusted only by solution treatment, so that the antibacterial duplex stainless steel material has the function of effectively inhibiting bacterial reproduction. The application of this new antibacterial method can be The antibacterial duplex stainless steel material is widely used in chemical industry, petroleum energy, power plant and marine engineering and other material fields. Background technique [0002] With the improvement of people's living standards, the health management of antibacterial, antibacterial and antiviral has become an issue of great concern in today's society. The traditional way to prevent the spread of bacteria and microorganisms is to use fungicide...

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 Applications(China)
IPC IPC(8): C21D6/00C22C38/44C22C38/42C22C38/58C22C38/02
CPCC21D6/004C21D2211/001C21D2211/005C22C38/001C22C38/02C22C38/42C22C38/44C22C38/58
Inventor 赵金龙杨春光徐大可杨柯
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap