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

AI Technical Summary

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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