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600HB-grade wear resistant steel plate and its manufacturing method

A technology of wear-resistant steel plate and manufacturing method, which is applied in the field of wear-resistant steel, can solve the problems of deterioration of wear-resistant steel welding and processing performance, and achieve the effects of eliminating internal stress, loose process system, and reasonable composition and process design

Active Publication Date: 2011-09-28
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Large amounts of carbon and alloy content can seriously deteriorate the welding and machining properties of wear-resistant steels

Method used

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  • 600HB-grade wear resistant steel plate and its manufacturing method
  • 600HB-grade wear resistant steel plate and its manufacturing method
  • 600HB-grade wear resistant steel plate and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The chemical composition of the 600HB wear-resistant steel plate of the present invention is shown in Table 2. According to the chemical composition shown in Table 2, it is smelted in an electric furnace or a converter. After refining, it is cast into a continuous casting billet or ingot. The continuous casting billet or steel ingot is heated to 1250 ° C, the rolling temperature is 1200 ° C, and the thickness of the finished steel plate is 6mm. After rolling Air cooling, quenching heating temperature is Ac 3 +80°C, tempering temperature is 300°C, after tempering, stacking or cooling bed cooling.

Embodiment 2

[0047] The implementation is the same as in Example 1, wherein the heating temperature is 1230°C, the rolling start temperature is 1180°C, the thickness of the finished steel plate is 12mm, and the quenching heating temperature is Ac 3 +60°C, tempering temperature is 250°C, after tempering, stack or cool down in a cooling bed.

Embodiment 3

[0049] The implementation method is the same as in Example 1, wherein the heating temperature is 1200°C, the rolling start temperature is 1150°C, the thickness of the finished steel plate is 20mm, and the quenching heating temperature is Ac 3 +50°C, tempering temperature is 220°C, after tempering, stack or cool down in a cooling bed.

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Abstract

Disclosed is a 600HB-grade wear resistant steel plate, comprising, by weight, 0.41 to 0.50% of C, 0.10 to 0.60% of Si, 0.20 to 1.20% of Mn, no more than 0.050% of P, no more than 0.030% of S, 0.01 to 1.50% of Cr, 0.01 to 1.00% of Mo, 0.01 to 1.50% of Ni, 0.001 to 0.10% of Ti, 0.001 to 0.10% of Al, 0.001 to 0.10% of RE, 0.01 to 1.00% of W, 0.0005 to 0.0040% of B, 0.001 to 0.010% of Ca, the balance Fe and unavoidable impurities. The 600HB-grade wear resistant steel plate provided in the invention has high hardness (no less than 600HB), good toughness and plasticity, high abrasion resistance and excellent processability and weldability; the microstructure is martensite or martensite and retained austenite. Therefore, the 600HB-grade wear resistant steel plate is extremely suitable for being used in high abrasion environment, especially for being used in vehicles or equipment which contact with such materials of high hardness as high strength ores, for example, a bucket, or the compartment of an electric wheel self-discharging truck for mining, etc.

Description

technical field [0001] The invention relates to wear-resistant steel, in particular to a 600HB wear-resistant steel plate and a manufacturing method thereof. Background technique [0002] In the case of particularly harsh working conditions, it is necessary to use strong and high-hardness wear-resistant steel plates to reduce the wear of the equipment and prolong its service life. [0003] The wear resistance of a material mainly depends on its hardness, and the toughness also has a certain influence. The higher the strength and hardness of wear-resistant steel, the higher its carbon and alloy content, and the poorer its welding performance. At the same time, the performance of cutting and bending is also poor, which limits the wide application of high-hardness wear-resistant steel in engineering. [0004] Most of the existing wear-resistant steels are high-carbon wear-resistant steels. As disclosed in Chinese patent CN1099810, the maximum carbon content is as high as 1.20...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C22C38/54C21D8/02
Inventor 李红斌姚连登刘自成赵小婷
Owner BAOSHAN IRON & STEEL CO LTD
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