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Quenched and straightened short-process wear-resistant steel plate and preparation method thereof

A technology for quenching, straightening and wear-resistant steel plates is applied in the field of quenching and straightening short-process wear-resistant steel plates and their preparation, which can solve the problems of waste of manpower, material resources and financial resources, high production cost, long process, etc., so as to improve production efficiency, Easy to operate, good mechanical properties

Inactive Publication Date: 2018-10-16
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese Patent Publication No. CN 105937008 A is "a thin-gauge wear-resistant steel and its manufacturing method" applied by Jiangyin Xingcheng Special Steel Co., Ltd. Chinese Patent Publication No. CN 106011398 B is "low-alloy wear-resistant steel" applied by Guilin University of Electronic Technology Steel heat treatment process", the steel production process is quenching + tempering treatment, which has the characteristics of long process, high energy consumption, high production cost and long cycle, resulting in a lot of waste of manpower, material resources and financial resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. A quenched and straightened short-process wear-resistant steel plate, wherein the chemical composition of the steel is: C 0.15%, Si 0.20%, Mn 1.10%, Cr 0.45%, Ti 0.022%, P 0.015, S 0.003% , B 0.0018%, Al 0.019%, As 0.0088%, H 0.00018%, O 0.0029%, the remaining content is Fe and inevitable inclusions.

[0040] 2. The above-mentioned short-process quenching and straightening wear-resistant steel preparation method sequentially includes smelting, refining, continuous casting, rolling, quenching and straightening processes:

[0041] (1) Smelting process: The molten iron needs to be desulfurized before entering the converter. The converter smelting mode adopts argon blowing throughout the process. After the alloy is added, it is sent to the LF refining furnace for refining. After refining, it is sent to the vacuum furnace for vacuum degassing.

[0042] (2) Casting process: continuous casting is carried out by continuous casting machine, and the whole process is protected ...

Embodiment 2

[0049] 1. A quenched and straightened short-process wear-resistant steel plate, wherein the chemical composition of the steel is: C 0.18%, Si 0.35%, Mn 1.15%, Cr 0.50%, Mo 0.20%, Ti 0.021%, P 0.013 %, S0.001%, B 0.0022%, Al 0.035%, As 0.0060%, H≤0.00015%, O 0.0022%, and the remaining content is Fe and unavoidable inclusions.

[0050] 2. The above-mentioned short-process quenching and straightening wear-resistant steel preparation method sequentially includes smelting, refining, continuous casting, rolling, quenching and straightening processes:

[0051] (1) Smelting process: The molten iron needs to be desulfurized before entering the converter. The converter smelting mode adopts argon blowing throughout the process. After the alloy is added, it is sent to the LF refining furnace for refining. After refining, it is sent to the vacuum furnace for vacuum degassing.

[0052] (2) Casting process: continuous casting is carried out by continuous casting machine, and the whole proces...

Embodiment 3

[0059] 1. A quenched and straightened short-process wear-resistant steel plate, wherein the chemical composition of the steel is: C 0.20%, Si 0.36%, Mn 1.20%, Cr 0.60%, Mo 0.25%, Ni 0.22%, Ti 0.018 %, P0.011%, S 0.001%, B 0.0026%, Al 0.038%, As 0.0045%, H 0.00015%, O 0.0026%, and the remaining content is Fe and inevitable inclusions.

[0060] 2. The above-mentioned short-process quenching and straightening wear-resistant steel preparation method sequentially includes smelting, refining, continuous casting, rolling, quenching and straightening processes:

[0061] (1) Smelting process: The molten iron needs to be desulfurized before entering the converter. The converter smelting mode adopts argon blowing throughout the process. After the alloy is added, it is sent to the LF refining furnace for refining. After refining, it is sent to the vacuum furnace for vacuum degassing.

[0062] (2) Casting process: continuous casting is carried out by continuous casting machine, and the who...

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Abstract

The invention discloses a quenched and straightened short-process wear-resistant steel plate and a preparation method thereof. The wear-resistant steel is prepared from chemical components in percentage by weight as follows: 0.15%-0.23% of C, 0.15%-0.55% of Si, 0.8%-1.40% of Mn, 0.20%-0.70% of Cr, 0-0.30% of Mo, 0-0.40% of Ni, 0.015%-0.040% of Ti, less than or equal to 0.015% of P, less than or equal to 0.003% of S, 0.0010%-0.0030% of B, 0.010%-0.050% of Al, less than or equal to 0.0090% of As, less than or equal to 0.00021% of H, less than or equal to 0.0030% of O and the balance of Fe and inevitable inclusions, and the sum of C and Cr is larger than or equal to the sum of 0.564 Si, 0.0589 Mn, 0.127 Ni, 1.121 As and 0.792 B and is smaller than or equal to the sum of 0.533 Si, 0.911 Mn, 0.179 Ni, 0.111 As and 1.21 B. The wear-resistant steel plate is prepared through converter smelting, refining, continuous casting, rolling, quenching and straightening. The HBW320-HBW460 grade tempering-free wear-resistant steel plate which is 8-30 mm is obtained and has the straightness less than or equal to 5 mm / m, the manufacturing process is short, the production cost is low, the problem of high energy consumption caused by the complex heat treatment technology is avoided, meanwhile, the production cycle is greatly shortened, and the preparation method is simple, convenient and practical.

Description

technical field [0001] The invention belongs to the technical field of steel plate preparation, in particular, the invention relates to a quenched and straightened short-process wear-resistant steel plate and a preparation method thereof. Background technique [0002] Wear-resistant steel is a wear-resistant material widely used in various wear conditions. With the advancement of production technology, new types of wear-resistant steel emerge in endlessly. The smelting, casting, heat treatment and machining processes are continuously improved. Wear-resistant steel Its comprehensive mechanical properties, wear resistance and service life are gradually improving, and its application fields are expanding day by day. Commonly made engineering machinery, mining machinery, coal mining machinery, crusher and other mechanical parts are widely used in various departments such as metallurgy, mining, building materials, electric power, railways and military, such as bulldozers, loaders...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/44C22C38/50C22C38/54C22C38/06C21D8/02
CPCC22C38/02C21D8/0205C21D8/0247C22C38/04C22C38/06C22C38/44C22C38/50C22C38/54
Inventor 麻衡
Owner SHANDONG IRON & STEEL CO LTD