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

High-strength 301L stainless steel used for bus, and manufacture method thereof

A manufacturing method and high-strength technology, applied in the field of stainless steel strip steel, can solve problems such as edge cracking of 301L steel

Active Publication Date: 2011-09-28
BAOSTEEL DESHENG STAINLESS STEEL
View PDF2 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a kind of 301L stainless steel for high-strength passenger cars and its manufacturing method, solve the defect problems such as edge cracks in 301L steel during rolling, ensure the quality of the edge of 301L hot-rolled strip steel, and ensure the quality of cold-rolled strip steel. Steel properties, improved surface finish

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
  • High-strength 301L stainless steel used for bus, and manufacture method thereof
  • High-strength 301L stainless steel used for bus, and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0067] Refer to Table 3 for the embodiment of the present invention, Table 3 for the heating process parameters of hot rolling, and Table 5 for the rolling process parameters of hot rolling. For the control parameters of the high-strength 301L cold-rolling process, see Tables 6 to 9.

[0068] Table 3: Chemical composition of 301L hot-rolled test slabs

[0069] Unit: weight percent

[0070] Example

[0071] Table 4: Hot rolling heating process parameter table (slab temperature ℃)

[0072] Example

[0073] 5

[0074] Table 5: Hot rolling process parameter table

[0075]

[0076] Table 6: Control parameters of DLT strength grade 301L cold rolling process

[0077] serial number

[0078] Table 7: ST strength grade 301L cold rolling process control parameters

[0079] serial number

[0080] Table 8: MT Strength Grade 301L Cold Rolling Process Control Parameters

[0081] serial number

[0082] Table 9: HT Strength G...

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 relates to high-strength 301L stainless steel used for a bus, and a manufacture method thereof. The high-strength 301L stainless steel comprises the following chemical components in percentage by weight: 0.010-0.020% of C, 0.20-0.60% of Si, 0.80-1.50% of Mn, 16.90-17.40% of Cr, not more than 0.035% of P, not more than 0.0050% of S, 6.90-7.40% of Ni and 0.090-0.14% of [N], wherein Creq = Cr% + Mo% + 1.5Si% + 0.5Nb% and is controlled at 17.5-17.9%, and Nieq = Ni% + 30(C% +N%) + 0.5Mn% and is controlled at 10.5-12.35%. The invention solves the problem that defects such as edge cracking emerge during the rolling process of 301L steel, guarantees the edge quality of 301L hot-rolled strip steel and the performance of cold-rolled strip steel and improves surface cleanness of steel.

Description

technical field [0001] The invention relates to a stainless steel strip, in particular to a 301L stainless steel for high-strength passenger cars and a manufacturing method thereof, that is, a metastable austenitic stainless steel cold-rolled strip. Background technique [0002] 301L stainless steel for high-strength passenger cars belongs to the metastable austenitic stainless steel. The steel is rapidly cooled in the state of high-temperature austenite structure, and can maintain the high-temperature austenite structure to room temperature. At this time, the austenite structure is supercooled austenite. body. When not affected by the outside world, the structure of steel does not change. When deformed by an external force, a phase transformation occurs, and the austenite structure of the steel transforms into martensite. Due to the martensite structure in the steel after cold deformation, the steel is magnetic and the strength of the steel is improved. Utilizing this fe...

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): C22C38/48C21D8/02B21B37/74B21B37/16
Inventor 叶晓宁黄俊霞池和冰
Owner BAOSTEEL DESHENG STAINLESS STEEL
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