Toothholder and manufacturing method thereof

A tooth base and mass percentage technology, applied in the field of excavator tooth base and its preparation, can solve problems such as difficulty in finding balance

Inactive Publication Date: 2012-04-18
NINGBO JIADA PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] High strength and high toughness of materials require higher carbon content and alloy content, while better weldability requires limited carbon and alloy content, and it is difficult to find a balance between the two for existing materials

Method used

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  • Toothholder and manufacturing method thereof
  • Toothholder and manufacturing method thereof
  • Toothholder and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The composition and mass percentage of the gear holder in this embodiment are: C: 0.19%, Mn: 0.80%, Si: 0.3%, Cr: 0.30%, Al: 0.02%, and the balance is Fe. At the same time, due to the adverse effects of S and P elements on the mechanical properties of the gear seat, it is necessary to ensure that the mass percentage of S element is less than or equal to 0.035%, and the mass percentage of P element is less than or equal to 0.035%.

[0013] As the basic element of alloy steel, C element forms carbides with Fe and Mn, which improves the hardness and wear resistance of steel, and plays an important role in solid solution strengthening. Therefore, a high content of carbon element can directly improve the hardness and wear resistance of the tooth seat, but the C element is an element that reduces the welding performance. This embodiment uses 0.19% by mass of the C element and cooperates with other alloy elements to ensure The welding performance of the tooth seat ensures its ...

Embodiment 2

[0026] The composition and mass percentage of the gear seat in this embodiment are: C: 0.20%, Mn: 1.0%, Si: 0.4%, Cr: 0.4%, Al: 0.03%, and the balance is Fe. At the same time, due to the adverse effects of S and P elements on the mechanical properties of the gear seat, it is necessary to ensure that the mass percentage of S element is less than or equal to 0.035%, and the mass percentage of P element is less than or equal to 0.035%.

[0027] In this embodiment, the gear seat has undergone casting process and heat treatment process, and the heat treatment process adopts the same process conditions as in Example 1, that is, quenching after heating up to 900°C and tempering at 220°C to 250°C after holding for 2-4 hours Temper at low temperature, and keep warm for 2-4 hours after tempering. Test its mechanical properties as shown in Table 2:

[0028] Table 2

[0029]

[0030] After adopting the ratio of this embodiment, the mechanical properties of the tooth seat manufactured...

Embodiment 3

[0032] The composition and mass percentage of the gear seat in this embodiment are: C: 0.22%, Mn: 1.10%, Si: 0.60%, Cr: 0.60%, Al: 0.06%, and the balance is Fe. At the same time, due to the adverse effects of S and P elements on the mechanical properties of the gear seat, it is necessary to ensure that the mass percentage of S element is less than or equal to 0.045%, and the mass percentage of P element is less than or equal to 0.045%.

[0033] In this embodiment, the gear seat has undergone casting process and heat treatment process, and the heat treatment process adopts the same process conditions as in Example 1, that is, quenching after heating up to 900°C and tempering at 220°C to 250°C after holding for 2-4 hours Temper at low temperature, and keep warm for 2-4 hours after tempering. Test its mechanical properties as shown in Table 3:

[0034] table 3

[0035]

[0036] After adopting the ratio of this embodiment, the mechanical properties of the tooth seat manufactu...

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Abstract

The invention discloses a toothholder and a manufacturing method thereof, and is used for solving the problem that the traditional toothholder has poor mechanical property and welding property. The toothholder disclosed by the invention comprises the following components by mass percent: 0.19-0.22% of C, 0.80-1.10% of Mn, 0.30-0.60% of Si, 0.30-0.60% of Cr, 0.02-0.06% of Al and the balance of Fe and inevitable impurities. The invention also provides a manufacturing method for manufacturing the toothholder; and the manufacturing method comprises a founding process and a heat treatment process.By adopting the manufacturing method provided by the invention, the mechanical property of the toothholder is greatly improved, and the welding property of the toothholder can satisfy the toothholderdemand.

Description

technical field [0001] The invention relates to a tooth seat and a preparation method thereof, in particular to a tooth seat for an excavator and a preparation method thereof. Background technique [0002] The excavator's tooth seat and tooth tip constitute the excavator's bucket teeth. The tooth seat and tooth tip are connected by a pin, which is a consumable part of the excavator. In order to prolong the service life of the excavator tooth seat and tooth tip and reduce the cost, according to the different functions of the tooth seat and the tooth tip, the tooth seat and the tooth tip require different mechanical properties. Among them, the tip of the tooth requires high hardness, high wear resistance, high strength and high toughness because it is in direct contact with the ore. The tooth seat requires good weldability to ensure the strength of the weld and the reliability of the weld, while ensuring high toughness and hardness. [0003] The high strength and high tough...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C21D9/32C21D1/18
Inventor 钱嘉镕新
Owner NINGBO JIADA PRECISION CASTING
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