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

Wear resistant steel plate with 350-380 HBW hardness level, thick specification and high toughness and preparation method

A technology of wear-resistant steel plates and thick gauges, which is applied in the field of 350-380HBW hardness grade thick gauge high-toughness wear-resistant steel plates and its preparation, and can solve problems such as low toughness, equipment safety hazards, and high hardness.

Active Publication Date: 2019-09-06
贝斯山钢(山东)钢板有限公司 +1
View PDF10 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of high-hardness, low-toughness low-alloy wear-resistant steel plate is difficult to meet the current use requirements of complex working conditions, and the equipment made of it has huge safety hazards during operation.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1 60mm thick low temperature resistant high toughness wear-resistant steel plate

[0051] The chemical composition weight percentage of wear-resistant steel plate is C: 0.18%, Si: 0.45%, Mn: 1.22%, Nb: 0.024%, Cr: 0.33%, Mo: 0.35%, V: 0.018%, P: 0.012%, S: 0.001%, Alt: 0.055%, the rest is Fe and trace impurities, among which Mn, Cr, Mo, Nb, and V elements are compound additions, and the thickness of the wear-resistant iron plate is 60mm;

[0052] The preparation method of wear-resistant steel plate is as follows:

[0053] Step (a) smelting: The molten iron is subjected to KR pretreatment, top-bottom combined blowing converter smelting, LF ladle furnace refining, RH vacuum degassing refining and slab continuous casting machine to obtain a continuous section with a section size of 250mm (thickness) × 2200mm (width). billet;

[0054] Step (b) Continuous casting slab heating: the continuous casting slab is heated by charging furnace with temperature, the temperatu...

Embodiment 2

[0060] Example 2 70mm thick low temperature resistant high toughness wear-resistant steel plate

[0061] The chemical composition weight percentage of wear-resistant steel plate is C: 0.18%, Si: 0.45%, Mn: 1.27%, Nb: 0.024%, Cr: 0.31%, Mo: 0.32%, V: 0.017%, P: 0.010%, S: 0.002%, Alt: 0.057%, the rest is Fe and trace impurities, among which Mn, Cr, Mo, Nb, and V elements are compound additions, and the thickness of the wear-resistant iron plate is 70mm;

[0062] The preparation method of wear-resistant steel plate is as follows:

[0063] Step (a) smelting: The molten iron is subjected to KR pretreatment, top-bottom combined blowing converter smelting, LF ladle furnace refining, RH vacuum degassing refining and slab continuous casting machine to obtain a continuous section with a section size of 250mm (thickness) × 2200mm (width). billet;

[0064] Step (b) Heating the continuous casting slab: the continuous casting slab is heated by charging the furnace with temperature, the t...

Embodiment 3

[0070] Example 3 80mm thick low temperature resistant high toughness wear-resistant steel plate

[0071] The chemical composition weight percentage of wear-resistant steel plate is C: 0.18%, Si: 0.42%, Mn: 1.25%, Nb: 0.021%, Cr: 0.34%, Mo: 0.36%, V: 0.015%, P: 0.009%, S: 0.001%, Alt: 0.052%, the rest is Fe and trace impurities, among which Mn, Cr, Mo, Nb, and V elements are added in combination, and the thickness of the wear-resistant iron plate is 80mm;

[0072] The preparation method of wear-resistant steel plate is as follows:

[0073] Step (a) smelting: The molten iron is subjected to KR pretreatment, top-bottom combined blowing converter smelting, LF ladle furnace refining, RH vacuum degassing refining and slab continuous casting machine to obtain a continuous sectional size of 300mm (thickness) × 2200mm (width). billet;

[0074] Step (b) Heating the continuous casting slab: the continuous casting slab is heated by charging furnace with temperature, the temperature of 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
Low temperature impact energyaaaaaaaaaa
Low temperature impact energyaaaaaaaaaa
Low temperature impact energyaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of wear resistant steel plate preparation, in particular to a wear resistant steel plate with 350-380 HBW hardness level, thick specification and high toughness and a preparation method. The steel plate comprises the following chemical components: 0.15-0.19% of C, 0.20-0.60% of Si, 1.10-1.50% of Mn, 0.01-0.05% of Nb, 0-0.80% of Ni, 0.30-0.50% of Cr, 0.30-0.50% of Mo, 0.015-0.030% of V, P not more than 0.015%, S not more than 0.002%, 0.050-0.070% of Alt, and the balance of Fe and trace impurities. The method comprises the steps of smelting, heating of continuous-cast blanks, rolling, slow cooling of steel plates, offline quenching, and tempering heat treatment. The method is low in limiting condition on finished steel plates, high in thick specification of the steel plates and high in 40-DEG C low-temperature impact toughness.

Description

technical field [0001] The invention relates to the technical field of preparation of wear-resistant steel plates, in particular to a wear-resistant steel plate with a hardness level of 350-380HBW, thick specifications and high toughness, and a preparation method thereof. Background technique [0002] Wear-resistant steel plates are key materials for the manufacture of coal mining machinery, engineering machinery, port machinery, mining equipment, dump trucks and other equipment. In recent years, the characteristics of large-scale and heavy-duty equipment have become increasingly prominent, and the service environment has become increasingly harsh, and the requirements for the performance of steel plates have increased year by year. The current low-alloy wear-resistant steel usually has low impact toughness and instability in production, which leads to the problem of poor wear resistance and easy fracture and failure of the steel plate under complex and diverse impact condit...

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): C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46C22C38/48C21D8/02C21D1/18
CPCC21D1/18C21D8/0226C22C38/002C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46C22C38/48
Inventor 曾凡钊王勇彭宾周平黄少文张学民李长新张海民谢晖薄其伟王旭峰
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