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High-toughness abrasion-resistant alloy steel for excavator bucket and production process thereof

A technology for excavator bucket teeth and production process, which is applied in the field of high-toughness and wear-resistant alloy steel and its production process, can solve the problems of poor fracture resistance and low service life, and achieves improved hardness performance and impact resistance performance and increased density. and hardness, the effect of grain refinement

Active Publication Date: 2013-04-03
滁州恒昌机械装备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] A high-toughness wear-resistant alloy steel for excavator bucket teeth, the weight percentage of each chemical component is: C 0.24-0.28%, Si 0.6-1.0%, Mn 1.2-1.5%, Cr 0.6-1.1%, Mo 0.3 -0.5%, V 0.05-0.10%, B 0.004-0.006%, Ti 0.08-0.12%, Ce 0.01-0.025%, La 0.02-0.03%, P≤0.03%, S≤0.03%, the balance is iron and impurities .

[0020] The production process of high-toughness and wear-resistant alloy steel for excavator bucket teeth includes the following steps:

[0021] (1) Melting and casting

[0022] According to the above ratio, the steelmaking raw materials are put into the medium frequency induction furnace for smelting, the furnace temperature is 1680 ℃, the pouring temperature is 1600 ℃, the vacuum is evacuated to 0.45Mpa, and investment casting, vacuum vibration casting, and steel shot chilling composite casting are adopted. process, the casting is slowly cooled to room temperature for demoulding;

[0023] (2) Annealing treatment

[0024] First he...

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Abstract

The invention discloses a high-toughness abrasion-resistant alloy steel for an excavator bucket, which comprises the following chemical components in percentage by weight: 0.24-0.28% of C, 0.6-1.0% of Si, 1.2-1.5% of Mn, 0.6-1.1% of Cr, 0.3-0.5% of Mo, 0.05-0.10% of V, 0.004-0.006% of B, 0.08-0.12% of Ti, 0.01-0.025% of Ce, 0.02-0.03% of La, P less than or equal to 0.03%, S less than or equal to 0.03% and the balance of iron and impurities. Compared with the traditional high-manganese steel, the high-toughness abrasion-resistant alloy steel disclosed by the invention has the advantages of higher abrasion resistance, toughness and impact resistance; and the high-toughness abrasion-resistant alloy steel can be used for ensuring that the normal working of an excavator, preventing and controlling the early brittle failure, reduces the shut-down and maintenance times, increases the labor productivity and the equipment utilization ratio and reduces the production cost.

Description

technical field [0001] The invention relates to a high-toughness wear-resistant alloy steel for excavator bucket teeth and a production process thereof, belonging to the technical field of alloy steel manufacturing process. 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, directly in contact with ore, sand, rock and other materials. When contacting the material, it not only bears the impact action, but also bears the bending moment action. During the service process, the tip of the bucket tooth is subject to large impact and sliding abrasive wear, and various furrows and deformations often appear on the surface of the tip, resulting in surface wear or shedding. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/32C22C33/04C21D8/00E02F9/28
Inventor 吕忠发
Owner 滁州恒昌机械装备制造有限公司
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