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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  • Abstract
  • Description
  • Claims
  • Application Information

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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 prepa

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

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Example Embodiment

[0036] Example 1

[0037] Determine the constituent elements of excavator bucket teeth and their mass percentages according to Table 1 Example 1. The constituent elements and mass percentages of excavator bucket teeth have a certain impact on the mechanical properties of the bucket teeth. The preparation process has an impact on the final formed bucket teeth. The mechanical properties also have a greater impact. The preparation process of the bucket tooth includes a casting process and a heat treatment process. The conventional casting process can be used for the casting process. The heat treatment process has the greatest impact on the final mechanical properties of the bucket tooth. The heat treatment process includes the steps of heating for quenching, tempering after heat preservation, and air cooling after tempering. In this example, in order to explore the optimal quenching temperature and tempering temperature, the bucket teeth of the excavator in this example were heat t...

Example Embodiment

[0043] Example 2

[0044] Determine the constituent elements and mass percentages of the bucket teeth of the excavator according to Example 2 in Table 1. In this embodiment, the bucket teeth of the excavator go through the casting process and the heat treatment process. The heat treatment process adopts the same process conditions as in the first embodiment, namely In the heat treatment process, quenching is performed at a temperature of 950°C, and the temperature is maintained for 2-4 hours after quenching; tempering is performed at a temperature of 220°C-240°C, and the temperature is maintained for 3-4 hours after tempering. Test its mechanical properties as shown in Table 3:

[0045] table 3:

[0046]

[0047] After adopting the ratio of this embodiment from the above test, the bucket tooth prepared with the process conditions of the first embodiment has good mechanical properties, high hardness, tensile strength, toughness, and wear resistance, and long service life.

Example Embodiment

[0048] Example 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 the casting process and the heat treatment process. The heat treatment process adopts the same process conditions as in the first embodiment, that is, in the heat treatment process. In the process, quenching is performed when the temperature is 950°C, and the temperature is kept for 2-4 hours after quenching; tempering is performed when the temperature is 220-240°C, and the temperature is kept for 3-4 hours after tempering. Test its mechanical properties as shown in Table 4:

[0050] Table 4:

[0051]

[0052] After adopting the ratio of this embodiment from the above test, the bucket tooth prepared using the process conditions of the first embodiment has good mechanical properties, good hardness, tensile strength, toughness, and wear resistance, and a long service li...

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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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