Automobile beam steel with tensile strength of 590MPa and manufacturing method thereof

A tensile strength, automotive beam technology, applied in manufacturing tools, temperature control, heat treatment process control and other directions, can solve the problem of less research reports on tensile strength 590MPa grade beam steel, and achieve excellent cold stamping and roll forming and fatigue. Effects of stable properties, chemical composition and mechanical properties, good plasticity and low temperature toughness

Active Publication Date: 2010-05-05
武汉钢铁有限公司
View PDF0 Cites 50 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production technology of beam steel with a tensile strength of 510MPa is quite mature and widely used, and there

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
  • Automobile beam steel with tensile strength of 590MPa and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The steel for automobile frame with a tensile strength of 590 MPa and its manufacturing method of the present invention will be described in detail below in conjunction with the accompanying drawings and several specific examples.

[0032] Table 1 lists the chemical composition weight percentages (the balance is Fe and unavoidable impurities) of the specific examples 1-8 of the present invention for producing automobile frame steels with a tensile strength of 590 MPa.

[0033] Table 1 The chemical composition weight percent of specific embodiment steel of the present invention

[0034] Example

[0035] These eight kinds of embodiment tensile strength 590MPa level automobile girder steel preparation methods are as follows: Carry out top-bottom composite blowing on the 90 ton and 250 ton converters of the steelmaking plant, adopt the hot metal desulfurization technology, make the S in the hot metal≤0.008%; Ferro-alloy is added when 1 / 3 of the steel is tapped aft...

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
Tensile strengthaaaaaaaaaa
Lower yield strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses automobile beam steel with tensile strength of 590MPa and a manufacturing method thereof. The steel comprises the following components in percentage by weight: 0.07-0.13 C, 0.10-0.30 Si, 1.30-1.60 Mn, at most 0.025 P, at most 0.008 S, 0.015-0.070 Al, 0.025-0.050 Nb, 0.020-0.040 Ti, and the balance of Fe and unavoidable impurities. The manufacturing method comprises the technical steps of molten iron desulfuration, bessemerizing, alloying, vacuum treatment, continuous casting, hot tandem rolling, Laminar cooling, reeling and finishing. Proved by practices, the automobile beam steel has stable chemical compositions and mechanical property as well as good cold forming performance and surface quality and completely meets the requirement for manufacturing novel frame structures of heavy-duty trucks and large vans.

Description

technical field [0001] The invention relates to steel for automobiles, in particular to a steel for automobile beams with a tensile strength of 590 MPa and a manufacturing method thereof. Background technique [0002] The frame of the truck and large passenger and truck chassis is made of steel for the automobile frame. Stamping forming or rolling forming, and its assembly mainly adopts riveting method. The car beam is the load-bearing part of the car, and it is also a safety part during the driving of the car. The beams of trucks and large passenger and trucks are generally made of 6-12mm hot-rolled steel plates. With the rapid development of my country's automobile industry and traffic and transportation industries, the demand for large-tonnage trucks and large luxury passenger cars continues to increase. In order to reduce the weight of vehicles, achieve energy saving, reduce environmental pollution and improve carrying efficiency, it is important to increase the streng...

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
IPC IPC(8): C22C38/14C22C33/06C21C7/10C21D8/02C21D11/00B21B37/74
Inventor 周祖安彭涛谢华孔勇江赵江涛谢懋亮黎静陈方玉曾萍
Owner 武汉钢铁有限公司
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