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Excavator bucket tooth and preparation method thereof

A technology of bucket teeth and bucket teeth of excavators, which is applied in the direction of earth mover/shovel, construction, etc., can solve the problems of easy fracture or crack, short service life, etc., and achieve complete dissolution of carbides, long service life, The effect of increased austenite homogeneity

Active Publication Date: 2013-03-20
济宁高新科达科技项目服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent application (publication number is CN102400050A) discloses a kind of bucket tooth, and its composition is C: 0.26%-0.29%, Mn: 0.90%-1.20%, Si: 1.10%-1.30%, Cr: 1.30%-1.50% %, B: 0.001%-0.005%, Al: 0.02%-0.06%, the balance is Fe and unavoidable impurities, and its preparation method: casting process and heat treatment process, the mechanical properties of the bucket teeth have been improved to a certain extent, and can meet The working environment of general excavators is required, but it is still prone to breakage or cracks, and the service life is short

Method used

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  • Excavator bucket tooth and preparation method thereof
  • Excavator bucket tooth and preparation method thereof
  • Excavator bucket tooth and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] According to Example 1 in Table 1, the composition elements and mass percentages of the excavator bucket teeth are determined. The composition elements and mass percentages of the excavator bucket teeth have a certain influence on the mechanical properties of the bucket teeth, and the preparation process has a great influence on the final formed bucket teeth. The mechanical properties are also greatly affected. The preparation process of bucket teeth includes casting process and heat treatment process. Among them, the casting process can adopt conventional casting process, and the heat treatment process has the greatest impact on the final mechanical properties of bucket teeth. The heat treatment process includes the steps of quenching and heating, tempering after heat preservation, and air cooling after tempering. In this example, in order to discuss the optimum quenching temperature and tempering temperature, the bucket teeth of the excavator in this example were heat...

Embodiment 2

[0044] According to Example 2 in Table 1, the constituent elements and mass percentages of the bucket teeth of the excavator are determined. In this example, the bucket teeth of the excavator go through a casting process and a heat treatment process, wherein the heat treatment process adopts the same process conditions as in Example 1, that is, in In the heat treatment process, quenching is carried out when the temperature is 950°C, and heat preservation is carried out for 2-4 hours after quenching; tempering is carried out when the temperature is 220°C-240°C, and heat preservation is carried out for 3-4 hours after tempering. Test its mechanical properties as shown in Table 3:

[0045] table 3:

[0046]

[0047] From the above test, after adopting the ratio of this embodiment, the bucket tooth produced by using the process conditions of the first embodiment has good mechanical properties, high hardness, tensile strength, toughness, wear resistance, and long service life. ...

Embodiment 3

[0049] Determine the constituent elements and mass percentages of the bucket teeth of the excavator according to Example 3 in Table 1. In this embodiment, the bucket teeth of the excavator go through a casting process and a heat treatment process, wherein the heat treatment process adopts the same process conditions as in Example 1, that is, after the heat treatment In the process, quenching is carried out when the temperature is 950°C, and heat preservation is carried out for 2-4 hours after quenching; tempering is carried out when the temperature is 220°C-240°C, and heat preservation is carried out for 3-4 hours after tempering. Test its mechanical properties as shown in Table 4:

[0050] Table 4:

[0051]

[0052] It can be seen from the above test that after adopting the ratio of this embodiment, the bucket tooth produced by using the process conditions of the first embodiment has good mechanical properties, good hardness, tensile strength, toughness and wear resistance...

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Abstract

The invention discloses an excavator bucket tooth and a preparation method thereof. The excavator bucket tooth solves the problem that the existing bucket tooth fractures or cracks easily and has a short service life. The excavator bucket tooth contains: by mass, 0.26 to 0.29% of C, 1.30 to 1.50% of Mn, 1.20 to 1.40% of Si, 1.40 to 1.60% of Cr, 0.15 to 0.25% of Mo, 0.20 to 0.30% of Ni and the balance Fe. The preparation method of the excavator bucket tooth comprises a casting process and a heat treatment process. The excavator bucket tooth has the advantages of good mechanical properties, high hardness, high toughness, high wear resistance, high tensile strength and long service life.

Description

technical field [0001] The invention relates to a bucket tooth, in particular to an excavator bucket tooth and a preparation method thereof, belonging to the field of metal materials. Background technique [0002] The bucket teeth of the excavator are an important part of the excavator. The bucket teeth of the excavator are in direct contact with the ore during the mining process of the mine, and the working conditions are very harsh. Due to the low surface hardness and poor wear resistance of excavator bucket teeth, in addition to normal chisel wear, they must also bear strong impact loads. Due to insufficient toughness, the parts are constantly impacted by various strong forces during construction and brittle fracture occurs. This not only causes waste of materials and economic losses, but also affects the progress of production. The factors affecting the service life of excavator bucket teeth are very complicated. In addition to ore structure, hardness, blasting conditio...

Claims

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Application Information

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IPC IPC(8): C22C38/44C21D1/18E02F9/28
Inventor 钱嘉镕新
Owner 济宁高新科达科技项目服务有限公司
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