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Wear-resistant steel plate for wood-based panel machine equipment and manufacturing method thereof

A technology for wood-based panel machines and wear-resistant steel plates, which is applied in the field of special materials, and can solve the problems of not considering the processability of wear-resistant steel plates for wood-based panel equipment and neglecting the processing performance of steel plates.

Active Publication Date: 2022-06-17
JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method increases the wear resistance of the steel plate by increasing the hardness of the steel plate surface, but ignores the processing performance of the steel plate
[0004] For example, the patent publication number is: CN 102181794 B, which publicly introduces a quenched and tempered high-strength steel plate for wood-based panel equipment and its production method. The hardness of the steel plate is improved by adding alloy elements and undergoing heat treatment methods such as quenching and tempering, but it does not consider Processability of wear-resistant steel plates for wood-based panel equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The thickness of the wear-resistant steel plate in this embodiment is 70mm, and its chemical composition in terms of mass percentage is: C: 0.15%, Mn: 1.30%, Si: 0.30%, S: 0.003%, P: 0.012%, Nb: 0.035%, Cr: 0.50%, B: 0.0020%, Ti: 0.025%, Al: 0.035%, N: 0.0032%, Mo: 0.25%, the balance is Fe and inevitable impurity elements, DI / t=0.091.

[0037] After KR molten iron pretreatment, converter smelting, LF refining, RH refining, and continuous casting, molten steel with O content of 0.0012%, H content of 0.0001%, and N content of 0.0032% was produced. In the continuous casting process, the continuous casting slab is produced with low superheat degree (23°C) and mold slag, and the continuous casting drawing speed is 0.85m / min. The slab is heated to 1223°C, the holding time is 2.5h, and two-stage rolling is adopted after being released from the furnace. The rolling temperature of the first stage is 1085°C, and the total pass reduction rate is 38%; The pass reduction rate is 22...

Embodiment 2

[0040] The thickness of the wear-resistant steel plate in this embodiment is 100mm, and its chemical composition in terms of mass percentage is: C: 0.20%, Mn: 1.00%, Si: 0.30%, S: 0.003%, P: 0.010%, Nb: 0.035%, Cr: 0.95%, B: 0.0018%, Ti: 0.025%, Al: 0.035%, N: 0.0033%, Ni: 0.45%, Mo: 0.50%, the balance is Fe and inevitable impurity elements, DI / t= 0.134.

[0041] After KR molten iron pretreatment, converter smelting, LF refining, RH refining, and continuous casting, molten steel with O content of 0.0014%, H content of 0.00008%, and N content of 0.0033% was produced. In the continuous casting process, the continuous casting slab is produced with low superheat degree (28°C) and mold flux, and the continuous casting and drawing speed is 0.85m / min. The slab is heated to 1214°C, the holding time is 2.7h, and two-stage rolling is adopted after the furnace is released. The rolling temperature of the first stage is 1112°C, and the total pass reduction rate is 37%; the rolling tempera...

Embodiment 3

[0044] The thickness of the wear-resistant steel plate in this embodiment is 120mm, and its chemical composition in terms of mass percentage is: C: 0.26%, Mn: 1.15%, Si: 0.26%, S: 0.002%, P: 0.011%, Nb: 0.025%, Cr: 0.80%, B: 0.0020%, Ti: 0.022%, Al: 0.066%, N: 0.0028%, Cu: 0.55%, Ni: 0.55%, Mo: 0.75%, the balance is Fe and inevitable impurity elements , DI / t=0.170.

[0045] After KR molten iron pretreatment, converter smelting, LF refining, RH refining, and continuous casting, molten steel with O content of 0.0011%, H content of 0.00007%, and N content of 0.0028% was produced. In the continuous casting process, the continuous casting slab is produced with low superheat degree (21°C) and mold flux, and the continuous casting drawing speed is 0.85m / min. The slab is heated to 1218°C, the holding time is 2.6h, and two-stage rolling is adopted after the furnace is released. The rolling temperature of the first stage is 1092°C, and the total pass reduction rate is 38%; the rolling ...

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Abstract

The invention relates to a wear-resistant steel plate for wood-based panel machine equipment and a manufacturing method thereof. The chemical composition is C: 0.15-0.26%, Si: 0.10-0.90%, Mn: 0.60-1.35%, and P≤0.015%. , S≤0.005%, Nb: 0.015~0.040%, Cr: 0.20~0.90%, B: 0.0005~0.0040%, Ti: 0.005~0.030%, Al: 0.010~0.080%, N≤0.0050%, the balance is Fe And unavoidable impurities, and satisfy: DI / t=0.09~0.18, may also contain Cu, Ni, Mo element 1 kind or more than 2 kinds. The surface structure of the steel plate of the present invention is tempered martensite, and the surface hardness is 400-500HBW. It has the characteristics of no cracking in thermal cutting, excellent weldability, convenient cold processing, low processing cost, high hardness of the working surface, good wear resistance, and long service life. .

Description

technical field [0001] The invention relates to a special-purpose steel plate and a manufacturing method thereof, in particular to a wear-resistant steel plate for wood-based panel machinery and equipment and a manufacturing method thereof. It belongs to the technical field of special materials. Background technique [0002] In recent years, with the continuous expansion of the domestic wood-based panel market, the demand for wood-based panel machinery and equipment has also increased year by year. One of the key components of wood-based panel machinery and equipment is large-thickness wear-resistant steel plates. This kind of large-thickness wear-resistant steel plate has been imported from abroad. With the localization of production and procurement, the localized procurement of large-thickness wear-resistant steel plates, the key components of this equipment, is becoming more and more urgent. Therefore, how to develop a large-thickness wear-resistant steel plate suitabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/26C22C38/28C21D8/02C22C33/04
CPCC22C38/02C22C38/04C22C38/06C22C38/26C22C38/28C22C38/001C22C33/04C21D8/0226C21D8/0263
Inventor 杨洋苗丕峰孙宪进林涛刘俊武金明
Owner JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD