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

Production method of environment-friendly high-surface quality and pickling-free beamsteel

A technology of automobile girder steel and production method, which is applied in the field of steel rolling, and can solve problems such as polluting the environment, uneconomical, and affecting the production of auto parts

Active Publication Date: 2012-06-27
SHOUGANG CORPORATION +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Before stamping structural parts for automobiles, the iron oxide scale on the surface of the steel plate is usually removed by pickling. If the automobile manufacturer directly stamps the hot-rolled automobile frame steel plate without pickling, it will cause the surface of the steel plate to be damaged. The iron oxide scale falls off and turns into powder, so the iron oxide scale powder that falls off will pollute the environment, and at the same time affect the service life of the stamping die and is uneconomical, seriously affecting the production of the next step of the auto parts

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
  • Production method of environment-friendly high-surface quality and pickling-free beamsteel
  • Production method of environment-friendly high-surface quality and pickling-free beamsteel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The molten iron is subjected to KR desulfurization treatment, full three desulfurization converter, and LF furnace refining treatment, and then continuous casting; the slab smelting composition: C is 0.08wt%, Si is 0.10wt%, Mn is 1.20wt%, P is 0.008 wt%, S is 0.004 wt%, Cr is 0.15 wt%, Nb is 0.03 wt%, and Alt is 0.04 wt%.

[0018] The slab is heated to 1260°C, the heating time is 3.2 hours, the finishing temperature is 890°C, and the coiling temperature is 580°C; in this way, after rough rolling, finishing rolling, and laminar cooling, coiling is carried out. Finally, 510L automobile frame steel was obtained. The yield strength was 410 MPa, the tensile strength was 540 MPa, and the elongation was 32%, the thickness was 8.5 mm, and the width was 1822 mm.

Embodiment 2

[0020] The molten iron is subjected to KR desulfurization treatment, full three desulfurization converter, and LF furnace refining treatment, and then continuous casting; the slab smelting composition: C is 0.09wt%, Si is 0.10wt%, Mn is 1.46wt%, P is 0.008 wt%, S 0.004 wt%, Cr 0.15 wt%, Nb 0.045 wt%, V 0.047 wt%, Ti 0.015 wt%, Alt 0.034 wt%.

[0021] The slab is heated to 1260°C, the heating time is 3.5 hours, the final rolling temperature is 880°C, and the coiling temperature is 560°C; in this way, after rough rolling, finishing rolling, and laminar cooling, coiling is carried out. Finally, 610L automobile frame steel was obtained. The yield strength was 535 MPa, the tensile strength was 640 MPa, and the elongation was 25%, the thickness was 9.8 mm, and the width was 1732 mm.

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
elongationaaaaaaaaaa
widthaaaaaaaaaa
Login to View More

Abstract

The invention provides a production method of environment-friendly high-surface quality and pickling-free beamsteel, belonging to the technical field of steel rolling and comprising the following steps: continuously casting molten iron after KR desulfuration treatment, complete pretreatment convertor steelmaking and LF furnace refining treatment; crimping a plate blank after reheating, roughing, finish rolling and laminar cooling; and finally obtaining the beamsteel satisfying the production requirement. Therefore, on the basis of meeting the beamsteel performance, by optimizing the chemical components of the beamsteel, heating cycle, rolling technology and the like and controlling the structure of surface scale of the beamsteel, the high-surface quality and pickling-free beamsteel can beproduced. A 2250mm hot continuous rolling broad strip mill is used to produce pickling-free 510L and 610L steel plates for automobile beams, wherein the width of the steel plate is 1100-2100mm and the thickness thereof is 1.6-14.0mm. By controlling the chemical components and melting and rolling key process parameters, the high-surface quality and pickling-free steel plate for the automobile beamcan be produced, which meets the production requirement.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and in particular provides an environment-friendly production method for pickling-free automobile frame steel with high surface quality, which is a production technology for producing high-quality pickling-free automobile frame steel. Background technique [0002] With the rapid development of my country's national economy, it has driven the prosperity of the domestic transportation industry, and correspondingly accelerated the progress of automobile technology and the increase in demand year by year. Therefore, automobile manufacturers have higher and higher quality requirements for automobile steel plates. And with the development of heavy-duty vehicles, high-strength steel plates for automobile girders are the development trend. The use of high-strength automobile girders can reduce the weight of automobiles and increase the payload of automobiles without increasing the weight of automobi...

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): C22C38/26C22C38/38C22C38/28B21B37/16B21B37/74
Inventor 阳代军朱立新王自亭李永林杨铁城李敏赵运堂艾矫健王松涛李波方圆徐永先高圣勇王莉王文广
Owner SHOUGANG CORPORATION
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