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High-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of coal cutter and preparation method of high-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of coal cutter

A technology of high temperature resistance and coal mining machine, which is applied in the direction of earth mover/shovel, construction, etc., can solve the problems of poor fracture resistance and low service life, and achieve good wear resistance, high hardness and high strength Effect

Inactive Publication Date: 2016-08-31
ANQING LINGBAO MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most commonly used bucket tooth material in China is high manganese steel, which has the problems of low service life and poor fracture resistance

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] A high-temperature-resistant and wear-resistant alloy steel for bucket teeth of a coal mining machine, consisting of the following components by weight: 0.4% of the carbon, 0.9% of silicon, 13% of manganese, 2% of chromium, 0.2% of lanthanum, and 0.4% of vanadium , phosphorus <0.04%, sulfur <0.04%, molybdenum 0.25%, niobium 0.05%.

[0018] A method for preparing a high-temperature-resistant and wear-resistant alloy steel for bucket teeth of a coal mining machine. 1) Ingredients: scrap iron, scrap steel, and alloys containing silicon, manganese, chromium, and molybdenum are selected;

[0019] 2) Melting: first put the ingredients in step 1) into an intermediate frequency furnace with hot lime on the bottom of the furnace, and melt them;

[0020] 3) sampling adjustment: make it obtain the proportioning ratio of 1) step design,

[0021] 4) Pouring molding: then out of the intermediate frequency furnace;

[0022] 5) Heat treatment: 4) is quenched; after the workpiece is q...

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PUM

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Abstract

The invention discloses high-temperature-resistant and abrasion-resistant alloy steel for bucket teeth of a coal cutter and a preparation method of the high-temperature-resistant and abrasion-resistant alloy steel for the bucket teeth of the coal cutter. The high-temperature-resistant and abrasion-resistant alloy steel is prepared from, by weight, 0.3%-0.5% of carbon, 0.60%-1.20% of silicon, 12%-14% of manganese, 1%-3% of chrome, 0.1%-0.3% of lanthanum, 0.05%-0.80% of vanadium, smaller than 0.04% of phosphorus, smaller than 0.04% of sulfur, 0.20%-0.30% of molybdenum, 0.04%-0.07% of niobium and the balance iron, wherein the content of manganese, lanthanum, chromium and vanadium totally accounts for 14% to 16%. The alloy steel has high hardness and high strength, is good in abrasion resistance and resistant to high temperature, also has the advantages of being good in toughness and plasticity and resistant to corrosion, and is high in cost performance.

Description

technical field [0001] The invention relates to the technical field of coal mine production equipment materials, in particular to a high-temperature-resistant and wear-resistant alloy steel for coal shearer bucket teeth and a preparation method thereof. Background technique [0002] Excavator bucket teeth are wearing parts that are consumed in large quantities in mining operations. The working conditions are harsh, and most of the failure modes are wear and tear, and a few of them are broken. The bucket teeth are generally installed at the front end of the excavator bucket, which is a cantilever beam member, and directly contacts with ore, sand, rock and other materials. When in contact with materials, it not only bears the impact action, but also bears the bending moment action. During the service process, the tip of the bucket teeth is subject to large impact and sliding abrasive wear, and various furrows and deformations often appear on the surface of the tip, resulting ...

Claims

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Application Information

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IPC IPC(8): C22C38/04C22C38/02C22C38/18C22C38/12C21D1/18E02F9/28
CPCC22C38/04C21D1/18C21D6/005C22C38/005C22C38/02C22C38/12C22C38/18E02F9/285
Inventor 洪星
Owner ANQING LINGBAO MACHINERY