Multi-element low-alloy wear-resistant steel

A low-alloy, wear-resistant steel technology, applied in the field of multi-element low-alloy air-quenched wear-resistant steel, can solve wear-resistant steel wear and other problems, and achieve the effect of low price

Inactive Publication Date: 2010-05-26
盂县社会福利高锰耐磨件厂
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Problems solved by technology

[0004] In order to solve the problem of serious abrasion of the wear-resistant steel of the hammer head ...

Method used

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Embodiment Construction

[0008] A kind of multi-element low-alloy wear-resistant steel described in the present invention comprises the following elements by weight percentage: C 0.46% (or 0.52% or 0.47% or 0.48% or 0.49% or 0.50% or 0.51), Si 0.8% (or 1.0% or 0.9%), Mn 1.0% (or 1.4% or 1.1% or 1.2% or 1.3%), P≤0.035%, S≤0.030%, Cr 2.0% (or 2.8% or 2.1% or 2.2% or 2.3 % or 2.4% or 2.5% or 2.6% or 2.7%), Mo 0.2% (or 0.5% or 0.3% or 0.4%), Re 0.1% (or 0.15% or 0.11% or 0.12% or 0.13% or 0.14),

[0009] And the following heat treatment is carried out: wind quenching at 900°C-950°C, tempering to 250°C-300°C for 3 hours, and then natural cooling.

[0010] During smelting, recycled waste medium carbon steel is used as raw material, and by adding ferrosilicon, ferromanganese, ferrochromium, ferromolybdenum, rare earth (usually rare earth steel, rare earth magnesium), the selected raw materials contain C, S, P The amount is lower than the content required by the present invention, and technical personnel adj...

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Abstract

The invention provides multi-element low-alloy wear-resistant steel, which relates to special multi-element low-alloy wear-resistant steel for manufacturing crusher hammer heads, in particular to multi-element low-alloy air-quench wear-resistant steel, namely 50SiMnCr2MoRe. In order to solve the problem of the severe wear of crusher hammer heads in the prior art, the multi-element low-alloy wear-resistant steel comprises the following element in percentage by weight: 0.46 to 0.52 percent of C, 0.8 to 1.0 percent of Si, 1.0 to 1.4 percent of Mn, less than or equal to 0.035 percent of P, less than or equal to 0.030 percent of S, 2.0 to 2.8 percent of Cr, 0.2 to 0.5 percent of Mo and 0.1 to 0.15 percent of Re, and the steel is manufactured through the following heat treatment of performing air quenching at 900 to 950 DEG C, tempering the obtained product to be between 250 and 300 DEG C, preserving heat for 3 hours and then naturally cooling the obtained product. As the multi-element low-alloy wear-resistant steel disclosed by the invention has high hardness and toughness, the lifespan of the crusher hammer heads manufactured from the steel is 5 times longer than common high-manganese wear-resistant steel, and the multi-element low-alloy wear-resistant steel contains no rare/noble elements and is low in price which is about two thirds of that of common high-manganese steel.

Description

technical field [0001] The present invention relates to multi-element low-alloy wear-resistant steel, in particular to multi-element low-alloy wear-resistant steel specially used for manufacturing hammerheads of crushers, specifically a multi-element low-alloy air-quenched wear-resistant steel—50SiMnCr 2 MoRe. Background technique [0002] The hammer head of the hammer crusher works under the conditions of high stress and strong impact wear, and is the main wearing part of the crusher. The hammer head of the crusher is subject to several forms of wear during work. When the surface shape of the hammer head does not change at the initial stage of work, the hammer head is mainly subject to impact wear, and the material hits the metal surface with a positive force to produce plastic deformation and impact craters; After the working surface of the hammer head wears into an arc surface, the force on the surface changes. At this time, the hammer head is not only affected by the im...

Claims

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Application Information

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IPC IPC(8): C22C38/22C21D6/00C21D1/18
Inventor 郭玉宝
Owner 盂县社会福利高锰耐磨件厂
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