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

Ferritic stainless steel and manufacturing method thereof

A manufacturing method, stainless steel technology, applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., can solve the problems of unestablished ferritic stainless steel, etc., and achieve the effect of sufficient corrosion resistance

Active Publication Date: 2019-09-27
JFE STEEL CORP
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As mentioned above, no technology has been established to produce ferritic stainless steel with high formability and wrinkling resistance at high efficiency using a continuous annealing furnace

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
  • Ferritic stainless steel and manufacturing method thereof
  • Ferritic stainless steel and manufacturing method thereof
  • Ferritic stainless steel and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] Hereinafter, the present invention will be described in detail through examples.

[0095] Stainless steel having the chemical composition shown in Table 1 was melted in a 50 kg small vacuum melting furnace. These ingots were heated at 1150° C. for 1 hour, and then hot-rolled to obtain 3.5 mm-thick hot-rolled sheets. Next, these hot-rolled sheets were subjected to hot-rolled sheet annealing under the conditions described in Table 2. Next, the surface is descaled by shot blasting and pickling. After further cold rolling to a thickness of 0.7 mm, cold-rolled sheet annealing (final annealing) was performed under the conditions described in Table 2, and then descaling treatment by pickling was performed to obtain a cold-rolled pickled annealed sheet.

[0096] The cold-rolled pickled and annealed sheets thus obtained were evaluated as follows.

[0097] (1) Evaluation of ductility

[0098]Cut the JIS 13B tensile test piece at right angles to the rolling direction from the ...

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
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The present invention provides a ferritic stainless steel that has sufficient corrosion resistance and is excellent in formability and wrinkling resistance. The ferritic stainless steel of the present invention contains C: 0.005% to 0.035%, Si: 0.25% to less than 0.40%, Mn: 0.05% to 0.35%, P: 0.040% or less, S: 0.01% or less, Cr : 15.5~18.0%, Al: 0.001~0.10%, N: 0.01~0.06%, Si and Mn satisfy 29.5×Si‑50×Mn+6≥0 (wherein, Si and Mn in the formula represent content (mass%) ), the balance is composed of Fe and unavoidable impurities.

Description

technical field [0001] The present invention relates to a ferritic stainless steel having sufficient corrosion resistance and excellent formability and wrinkling resistance, and a method for producing the same. Background technique [0002] Ferritic stainless steel is inexpensive and has excellent corrosion resistance. Therefore, it is used in various applications such as building materials, transportation equipment, home appliances, kitchen equipment, and automobile parts, and its application range has further expanded in recent years. In order to be used in these applications, not only corrosion resistance but also sufficient formability (large elongation and average Lankford value (hereinafter, sometimes referred to as average r value)) capable of being processed into a predetermined shape are required. [0003] On the other hand, ferritic stainless steel is often used in applications requiring good appearance, and it is also required to be excellent in wrinkling resistan...

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): C22C38/00C21D1/26C22C38/18C22C38/54
CPCC21D6/002C21D8/0263C21D8/0273C21D8/0463C21D8/0473C21D9/46C21D2211/005C22C38/001C22C38/02C22C38/04C22C38/06C22C38/18C22C38/22C22C38/26C22C38/28C22C38/32C21D1/26C21D8/0226C21D8/0236C22C38/54
Inventor 吉野正崇水谷映斗藤泽光幸田彩子
Owner JFE STEEL CORP
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