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Excavator toothholder and preparation method thereof

A technology of excavator teeth and machine tooth holders, which is applied in the field of tooth holders, excavator tooth holders and their preparation, can solve the problems of low market competitiveness, high price of gear holders, and high material costs, and achieve simplified production processes and carbonization The effect of complete dissolution of substances and low material cost

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

The micro-alloy weldable cast steel tooth seat is added with a small amount of other elements such as B, La, and Ce. Although the performance of the tooth seat can meet the general requirements of the tooth seat, its service life is short, it is easy to break, and the material cost is relatively low. High, for example, the price of rare earth metal La is as high as 100,000-110,000 yuan / ton, and the price of Ce is 165,000-170,000 yuan / ton, resulting in high price of gear holder and low market competitiveness

Method used

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  • Excavator toothholder and preparation method thereof
  • Excavator toothholder and preparation method thereof
  • Excavator toothholder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The constituent elements and mass percentages of the excavator tooth holder in this embodiment are shown in Example 1 in Table 1.

[0026] The constituent elements and mass percentage of the excavator tooth seat have a certain influence on the mechanical properties of the tooth seat, and its preparation process also has a great influence on the mechanical properties of the final formed tooth seat. The preparation process of the gear seat includes a casting process and a heat treatment process, in which the casting process can only use the conventional casting process, and the heat treatment process has the greatest impact on the final mechanical properties of the gear seat. 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 tooth seat in this example was heat treated under different...

Embodiment 2

[0033] According to Example 2 in Table 1, the composition elements and mass percentages of the excavator tooth seat are determined. In this embodiment, the excavator tooth seat passes 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 900°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:

[0034] table 3:

[0035]

[0036]

[0037] From the above test, after adopting the ratio of this embodiment, the excavator gear seat made by using the process conditions of embodiment 1 has good mechanical properties, high hardness, tensile strength, toughness and wear resistance, and long service life. The...

Embodiment 3

[0039] According to Example 3 in Table 1, the composition elements and mass percentages of the excavator tooth seat are determined. In this embodiment, the excavator tooth seat passes 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 900°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:

[0040] Table 4:

[0041]

[0042] From the above test, after adopting the ratio of this embodiment, the excavator adapter made by using the process conditions of Embodiment 1 has good mechanical properties, high hardness, tensile strength, toughness, and wear resistance, and has a long service life. Long, lo...

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Abstract

The invention discloses an excavator toothholder and a preparation method thereof. The excavator toothholder solves the problem that the existing toothholder has a short service life and a high material cost. The excavator toothholder contains: by mass, 0.21 to 0.24% of C, 1.10 to 1.40% of Mn, 0.30 to 0.60% of Si, 0.45 to 0.85% of Cr and the balance Fe. The preparation method of the excavator toothholder comprises a casting process and a heat treatment process. The excavator toothholder has greatly improved mechanical properties, high hardness, high tensile strength, high toughness, high wear resistance, a long service life and a low material cost.

Description

technical field [0001] The invention relates to a tooth seat, in particular to an excavator tooth seat and a preparation method thereof, belonging to the field of metal materials. Background technique [0002] Bucket teeth and tooth holders are the main wear parts of excavators and loaders. Bucket teeth and tooth holders are in direct contact with sand, soil, rocks, minerals, etc. during work, and are subject to severe abrasive wear and consume a lot. According to the different functions of bucket teeth and tooth seats, bucket teeth and tooth seats have different requirements on the mechanical properties of materials. Among them, the bucket teeth are in direct contact with the ore, which requires high hardness, high wear resistance, high strength and high toughness, while the tooth holder requires materials with good weldability to ensure the strength of the weld and the reliability of the weld, while ensuring High toughness and hardness. [0003] The gear seat in the prio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18E02F9/28
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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