Low-cost hot-formed steel for pipe manufacturing and production and preparation method of low-cost hot-formed steel

A hot-formed steel, low-cost technology, applied in the field of steel rolling, can solve the problems of application and high alloy cost, and achieve the effect of reducing cracking

Inactive Publication Date: 2021-03-26
SD STEEL RIZHAO CO LTD
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, MnB series steel is still difficult to solve the forming problem of hollow structural parts that require high strength, and the alloy cost is relatively high
Therefore, in order to meet the demand for high-strength steel such as light weight of the c

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
  • Low-cost hot-formed steel for pipe manufacturing and production and preparation method of low-cost hot-formed steel
  • Low-cost hot-formed steel for pipe manufacturing and production and preparation method of low-cost hot-formed steel
  • Low-cost hot-formed steel for pipe manufacturing and production and preparation method of low-cost hot-formed steel

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] The present invention provides a low-cost hot-formed steel for pipe making and a production and preparation method to produce a hot-formed steel with excellent performance at a low alloy cost, which can effectively reduce defects such as cracking and springback in the hot-forming process, and meet the needs of lightening the body weight. Demand for high-strength steel.

[0021] The technical solution in the embodiment of the present invention is to solve the above-mentioned technical problems, and the general idea is as follows: the hot-formed steel uses C-Si-Mn as the basic alloy system, and the specific element ratio and its main functions are detailed in the following description.

[0022] C:0.19%~0.28%;Si:0.20%~0.29%;Mn:1.5%~2.0%;P:≤0.015%;S:≤0.006%;Al:0.02%~0.06%;Ti:0.01%~0.03 %; N: ≤0.004%, the rest is Fe and unavoidable impurities.

[0023] C element is a solid solution strengthening element, which can effectively improve the strength of steel. If the C content...

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
Login to view more

Abstract

The invention discloses low-cost hot-formed steel for pipe manufacturing. The hot-formed steel comprises the following chemical components including, by weight percent, 0.19%-0.28% of C, 0.20%-0.29% of Si, 1.5%-2.0% of Mn, smaller than or equal to 0.015% of P, smaller than or equal to 0.006% of S, 0.02%-0.06% of Al, 0.01%-0.03% of Ti, smaller than or equal to 0.004% of N, and the balance Fe and inevitable impurities. According to the low-cost hot-formed steel for pipe manufacturing and the production and preparation method of the low-cost hot-formed steel, the tensile strength of the hot-formed steel reaches 1500 MPa or above after a hot forming process, the elongation is larger than or equal to 5%, the hot-formed steel with the excellent performance is produced with the low alloy cost, the defects of cracking, resilience and the like can be effectively reduced in the hot forming process, and the requirements of light weight of a vehicle body and the like on high-strength steel are met.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a low-cost hot-formed steel for pipe making and a production and preparation method thereof. Background technique [0002] With the strengthening of people's awareness of environmental protection and the increasing requirements for automobile safety, automobile manufacturers pay more attention to reducing fuel consumption and engine exhaust emissions through lightweight automobiles. In order to ensure that the car can still meet the crash safety performance after being lightweight, major car companies have shifted their focus to the application of new materials and new processes while optimizing the car frame and structure. In the production of body structures such as bumpers, beams, and anti-collision beams, advanced ultra-high-strength and high-toughness steels are used to improve the strength of body structural parts and meet the requirements of lightweight. [0003] At...

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): C22C38/02C22C38/04C22C38/06C22C38/14C21D8/02C22C33/04
CPCC21D8/0205C21D8/0226C21D8/0263C22C33/04C22C38/001C22C38/02C22C38/04C22C38/06C22C38/14
Inventor 胡华东徐国军刘培星郝亮田祥省田川柳彩枫雷凯刘飞许明
Owner SD STEEL RIZHAO CO LTD
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