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

On-line quenched HB400-grade wear-resistant steel plate and preparation method thereof

A technology of wear-resistant steel plate and manufacturing method, which is applied in the field of preparation of high-strength wear-resistant steel plate, can solve the problems of high manufacturing cost, adding more alloy elements, and long production process, and achieve low cost, excellent comprehensive performance, and improved plasticity and toughness The effect of indicators

Active Publication Date: 2019-08-02
贝斯山钢(山东)钢板有限公司
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Aiming at the problems of more alloying elements added, long production process, and high manufacturing cost in the prior art, the present invention provides a HB400 grade wear-resistant steel plate with a thickness of 8-20mm in-line quenching and a manufacturing method thereof. The thickness range of the wear-resistant steel plate is 8-20mm, the tensile strength range is 1250-1430MPa, the elongation (A50) range is 15-18%, the hardness value range is 370-430HBW, the impact toughness at -20°C is ≥50J, and the flatness of the steel plate meets the requirements ≤6mm / 2m; The design of the manufacturing method of the wear-resistant steel plate is reasonable, giving full play to the advantages of each control process, ensuring the uniformity of the performance of the steel plate, effectively eliminating the influence of the residual internal stress of the steel plate, and improving the subsequent processing performance of the steel plate such as cutting and welding

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
  • On-line quenched HB400-grade wear-resistant steel plate and preparation method thereof
  • On-line quenched HB400-grade wear-resistant steel plate and preparation method thereof
  • On-line quenched HB400-grade wear-resistant steel plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Example 1 An online quenched HB400 grade wear-resistant steel plate with a thickness of 8mm.

[0054] The chemical composition and weight percentage of the steel plate produced by the method of the present invention are: C: 0.18%, Si: 0.30%, Mn: 0.25%, P: 0.008%, S: 0.003%, Alt: 0.035%, Ni: 0.12%, Cr: 0.80%, Mo: 0.18%, Ti: 0.013%, N: 0.0030%, H: 0.00011%, the rest is Fe and trace impurities.

[0055] The thickness of an online-quenched HB400-grade wear-resistant steel plate in this embodiment is 8mm, and the preparation method is as follows:

[0056] (1) Smelting: The molten iron undergoes KR pretreatment, 120-ton top-bottom combined blowing converter smelting, 120-ton LF ladle furnace refining, 120-ton RH vacuum degassing refining and slab continuous casting machine, etc. The cross-sectional size is 200mm× 1800mm continuous casting billet.

[0057] (2) Continuous casting billet conditions: the heating temperature of continuous casting billet is controlled at 1220℃;

[0058] (3...

Embodiment 2

[0062] The thickness of the steel plate of Example 2 is 10 mm.

[0063] The chemical composition and weight percentage content of the steel plate produced by the method of the present invention are: C: 0.17%, Si: 0.35%, Mn: 0.28%, P: 0.006%, S: 0.003%, Alt: 0.037%, Ni: 0.13%, Cr: 0.82%, Mo: 0.16%, Ti: 0.013%, N: 0.0033%, H: 0.00014%, the rest is Fe and trace impurities.

[0064] The production process and the thickness of the continuous casting billet of the on-line quenched HB400 grade wear-resistant steel plate in this example are the same as those in Example 1, with the difference:

[0065] The thickness of the steel plate is 10mm. The open-rolling temperature of the austenite non-recrystallized zone is 980℃, and the open-rolling thickness of the austenite non-recrystallized zone is 100mm. Online quenching heat treatment: the starting water cooling temperature is 910℃, the final cooling temperature is 120℃; the tempering temperature is 230℃, and the furnace time is 40min.

[0066...

Embodiment 3

[0067] The thickness of the steel plate of Example 3 is 12 mm.

[0068] The chemical composition and weight percent content of the steel plate produced by the method of the present invention are: C: 0.16%, Si: 0.32%, Mn: 0.24%, P: 0.005%, S: 0.003%, Alt: 0.039%, Ni: 0.14%, Cr: 0.86%, Mo: 0.18%, Ti: 0.017%, N: 0.0023%, H: 0.00011%, the rest is Fe and trace impurities.

[0069] The production process and the thickness of the continuous casting billet of the on-line quenched HB400 grade wear-resistant steel plate in this example are the same as those in Example 1, with the difference:

[0070] The thickness of the steel plate is 12mm. The open-rolling temperature of the austenite non-recrystallized zone is 990℃, and the open-rolling thickness of the austenite non-recrystallized zone is 100mm. Online quenching heat treatment: the starting water cooling temperature is 910℃, the final cooling temperature is 140℃; the tempering temperature is 200℃, and the furnace time is 48min.

[0071] T...

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
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of high-strength wear-resistant steel plate preparation, in particular to an on-line quenched HB400-grade wear-resistant steel plate and a preparation method thereof. The steel plate comprises the following components of, in percentage by weight, 0.15%-0.18% of C, 0.30%-0.60% of Si, 0.22%-0.40% of Mn, less than or equal to 0.010% of P, less than or equal to 0.003% of S, 0.025%-0.050% of Alt, 0.10%-0.25% of Ni, 0.80%-1.00% of Cr, 0.15%-0.30% of Mo, 0.010%-0.030% of Ti, less than or equal to 0.0050% of N, less than or equal to 0.00015% of H, the balance Fe and trace impurities. The thickness of the steel plate is 8-20 mm. According to the preparation method, the manufactured wear-resistant steel plate is characterized in that the hardness value ofthe wear-resistant steel plate is 370 HBW-430 HBW, the tensile strength is 1250-1430 MPa, the elongation percentage (A50) ranges from 15% to 18%, the impact toughness value at 20 below zero is greater than or equal to 50J, excellent wear resistance is provided, meanwhile, excellent low-temperature impact toughness is provided, and wear-resistant steel plate is suitable for being used under severeworking conditions such as mining machinery and the like. In addition, different from the conventional off-line conditioning process, the wear-resistant steel plate manufactured by the method is produced by adopting an online quenching and off-line tempering process, the remarkable advantages of short production process and low manufacturing cost is realized.

Description

Technical field [0001] The invention relates to the technical field of preparation of a high-strength wear-resistant steel plate, in particular to an online quenched HB400 grade wear-resistant steel plate and a preparation method. Background technique [0002] Low-alloy high-strength wear-resistant steel plates have been developed in recent decades. They have good machinability and excellent wear resistance. The service life is several times that of traditional structural steel plates. The production process is simple, such as Japan, Germany and Sweden. Some steel companies in China produce low-alloy high-strength wear-resistant steel. [0003] In recent years, with the continuous improvement of the level of technology and equipment in my country, the production of low-alloy wear-resistant steel plates has gradually become large-scale, and has been widely used in coal mining machinery, construction machinery, port machinery, mining equipment, dump trucks and other fields. Especiall...

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): C22C38/50C22C38/44C22C38/06C22C38/04C22C38/02C22C33/04C21D8/02C21D1/18
CPCC21D1/18C21D8/0205C22C33/04C22C38/001C22C38/002C22C38/02C22C38/04C22C38/06C22C38/44C22C38/50
Inventor 彭宾王振华杜海涛侯东华李士安李永亮曾凡钊乔松王杰王旭峰
Owner 贝斯山钢(山东)钢板有限公司
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