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Multi-component alloy cast steel bucket tooth and production process thereof

A multi-element alloy and production process technology, which is applied in earth movers/shovels, construction, etc., can solve problems such as short service life, and achieve the effect of improving wear resistance and prolonging service life

Inactive Publication Date: 2011-08-03
SHANGHAI SANY HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these cast steel bucket teeth in the prior art generally have great deficiencies in terms of hardness and tensile strength, and have a short service life and need to be replaced frequently

Method used

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Embodiment Construction

[0023] The multi-element alloy cast steel bucket tooth and its production process of the present invention will be further described in detail below in conjunction with specific embodiments.

[0024] The multi-element alloy cast steel bucket teeth of the present invention include chemical components and corresponding weight percentages: C: 0.30-1.00; Cr: 1.50-3.00; Mn: 0.60-1.00; Si: 1.00-2.00; Mo: 0.20-1.00 ; Ni: 0.5~1.50; Ti: 0.005~0.1; Re: 0.15~0.25; P / S: ≤0.030; the balance is Fe. The functions of the main chemical components contained in it are as follows: C: the basic element in alloy steel, which improves the hardenability and hardenability of steel, and has an important solid solution strengthening effect; Si: Si dissolves in ferrite, and its An important role in steel is to strongly inhibit and delay the carbide decomposition of supercooled austenite and improve the stability of austenite. After adding a certain amount of Si to the steel, it can effectively improve th...

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PUM

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Abstract

The invention discloses a multi-component alloy cast steel bucket tooth comprising the following chemical components in percentage by weight: 0.30%-1.00% of C, 1.50%-3.00% of Cr, 0.60%-1.00% of Mn, 1.00%-2.00% of Si, 0.20%-1.00% of Mo, 0.5%-1.50% of Ni, 0.005%-0.1% of Ti, 0.15%-0.25% of Re, not more than 0.030% of P / S and the balance of Fe. The multi-component alloy cast steel bucket tooth cast by the production process is a new steel type different from the traditional bucket tooth, and in the gravel working condition, the wear resistance of a material is improved and the service life of the bucket tooth is prolonged; the tensile strength Rm of the bucket tooth is not less than 1700MPa, the hardness HRC is 52-55, and the Charpy impact Akv is not less than 15J; and the bucket tooth has excellent strength and toughness and high hardness.

Description

technical field [0001] The invention relates to an excavator bucket tooth and its production process, in particular to a multi-element alloy cast steel bucket tooth and its production process. Background technique [0002] The excavator bucket tooth is an important part of the excavator. It is a combined bucket tooth composed of a tooth seat and a tooth tip. The two are connected by a pin shaft and are easy to wear and tear. At present, bucket teeth used in China, such as a multi-component alloy cast steel excavator bucket tooth and its production process disclosed in patent application No. 200410098676.5, the composition (weight percentage) of the multi-component alloy cast steel contained in the excavator bucket tooth is: C (0.22 ~ 0.30), Cr (1.10 ~ 1.40), Mn (1.25 ~ 1.65), Si (1.21 ~ 1.58), Mo (0.21 ~ 0.30), Ti (0.05 ~ 0.11), the rest is Fe; the corresponding production process Including pouring process and heat treatment process, and includes mechanical processing proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/28C22C38/50
Inventor 戴晴华薛飞陈胜
Owner SHANGHAI SANY HEAVY IND
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