Supercharge Your Innovation With Domain-Expert AI Agents!

A kind of 780mpa grade automobile structural steel and production method

A production method and automobile structure technology, applied in the field of 780MPa automobile structural steel and production, can solve the problems of non-corrosion performance and non-compliance with the requirements of high-strength formed automobile parts, etc.

Active Publication Date: 2021-09-14
ANGANG STEEL CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Chinese patent application with the notification number CN 105369134 B discloses a 400MPa grade pickling-free automotive structural hot-rolled steel plate and its production method. It is a common C-Mn component system design, which is produced by solid solution strengthening of carbon and manganese elements to improve strength. Hot-rolled steel plate, but the highest yield strength of the steel plate is 311MPa, which does not meet the requirements of high-strength formed auto parts, and has no anti-corrosion performance

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 kind of 780mpa grade automobile structural steel and production method
  • A kind of 780mpa grade automobile structural steel and production method
  • A kind of 780mpa grade automobile structural steel and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0048] See Table 1-5 for the specific composition, temperature regime, finish rolling tension control parameters, properties of the steel plate, and tissue volume percentage of the six embodiments of the present invention.

[0049] Table 1 Chemical composition (wt, %) of the embodiment of the present invention

[0050]

[0051]

[0052] Table 2 The hot rolling temperature system of the embodiment of the present invention

[0053]

[0054] Table 3 Example finish rolling tension control parameters

[0055]

[0056] The mechanical property parameter of table 4 embodiment of the present invention

[0057]

[0058]

[0059] Tissue volume percentage in the embodiment of the present invention in table 5

[0060] Numbering ferrite Bainite Example 1 0％ 100％ Example 2 10％ 90％ Example 3 8％ 92％ Example 4 14％ 86％ Example 5 11％ 89％ Example 6 15％ 85％

[0061] .

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
thicknessaaaaaaaaaa
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a steel for 780MPa grade automobile structure and a production method. The chemical composition is calculated by mass percentage: C: 0.090%-0.13%, Si: 0.02%-0.15%, Mn: 1.65%-1.90%, Al: 0.010% ~0.040%, Nb: 0.055%~0.070%, Ti: 0.050%~0.070%, Cr: 0.30%~0.40%, Cu: 0.30%~0.65%, Sb: 0.15%~0.30%, Ni: 0.020%~0.045% %, Bi: 0.010% to 0.045%, P≤0.015%, S≤0.006%, and the balance is Fe and unavoidable impurities. The advantages are: the steel has excellent mechanical properties and anti-corrosion properties, and adopts the rapid and continuous cooling process in the front section after rolling to avoid the formation of banded structures in the steel plate.

Description

technical field [0001] The invention belongs to the field of steel production for automobile structures, and in particular relates to a 780MPa grade steel for automobile structures and a production method. Background technique [0002] With the rapid development of my country's automobile industry, traffic and transportation industry, especially the increasing demand for large-tonnage trucks, in order to reduce the weight of automobile structural components to reduce their own weight, to achieve energy saving, reduce environmental pollution and improve transportation efficiency , which promotes the application of high-performance, high-surface-quality hot-rolled automotive steel sheets. The protective measures for the corrosion of steel plates in the modern automobile industry are generally galvanized or brushed with anti-corrosion paint on the surface of the steel plates, and the steel plates themselves do not have anti-corrosion properties. Once the anti-corrosion coating ...

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): C22C38/02C22C38/58C22C38/06C22C38/48C22C38/50C22C38/42C22C38/60C21D8/02
CPCC21D8/0205C21D8/0226C21D8/0247C22C38/002C22C38/02C22C38/06C22C38/42C22C38/48C22C38/50C22C38/58C22C38/60
Inventor 孙成钱时晓光董毅刘仁东徐荣杰王俊雄韩楚菲
Owner ANGANG STEEL CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com