Excavator bucket tooth and preparation method thereof

A technology of excavator bucket teeth and mass percentage, which is applied in the field of metal materials, can solve the problems of high cost, high energy consumption, and high manganese content, and achieve the effects of prolonging life, improving mechanical properties, and improving toughness

Inactive Publication Date: 2015-07-15
NINGBO JIADA PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the manganese content is high, so its cost is high and energy consumption is high

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
Comparison scheme
Effect test

Embodiment 1

[0029] The constituent elements and mass percentages of the bucket teeth of the excavator in this embodiment are shown in Example 1 in Table 1.

[0030] The constituent elements and mass percentages of excavator bucket teeth have a certain influence on the mechanical properties of bucket teeth, and their preparation process also has a greater impact on the mechanical properties of the final formed bucket teeth. 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 in this example were heat treated under different...

Embodiment 2

[0037] 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 the heat preservation is carried out for 4 hours after quenching; tempering is carried out when the temperature is 260°C, and heat preservation is carried out for 4 hours after tempering. Test its mechanical properties as shown in Table 3:

[0038] Table 3: Mechanical properties of excavator bucket teeth after heat treatment in Example 2 under different conditions

[0039]

[0040] From the above test, after adopting the proportioning of this embodiment, the excavator manufactured by using the process conditions of embodiment 1 has good mech...

Embodiment 3

[0042] According to Example 3 in Table 1, the composition 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 900°C, and heat preservation is carried out for 2 hours after quenching; tempering is carried out when the temperature is 230°C, and heat preservation is carried out for 3 hours after tempering. Test its mechanical properties as shown in Table 4:

[0043] Table 4: Mechanical properties of excavator bucket teeth after heat treatment under different conditions in Example 3

[0044]

[0045]

[0046] From the above test, after adopting the proportioning of this embodiment, the excavator manufactured by using the process conditions of embodiment 1 has g...

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Abstract

The invention discloses an excavator bucket tooth and a preparation method thereof, and solves the problems that conventional bucket teeth are general in wear resistance, impact performance and the like, short in service life and high in production cost. The excavator bucket tooth comprises the components in percents by mass: 0.25-0.29% of C, 1.10-1.40% of Mn, 1.50-1.90% of Si, 1.40-1.70% of Cr, 0.02-0.06% of Al, 0.10-0.15% of Mo, and the balance Fe and unavoidable impurities. The invention also provides the preparation method of the excavator bucket tooth, and the preparation method comprises operations of casting and heat treatment. The excavator bucket tooth is substantially improved in mechanical properties, and especially obviously improved in toughness, hardness, tensile strength, wear resistance and the like, and low in material cost.

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] Bucket teeth are excavator spare parts, generally installed at the front end of the excavator bucket, widely used in mining, metallurgy, electric power, building materials, cement, machinery and other industries, directly in contact with sand, soil, rocks, minerals, etc., when contacting materials , not only bear the impact, but also bear the bending action. During the working process, the tip of the bucket tooth is subject to large impact and sliding abrasive wear, and various furrows and deformations often appear on the surface of the tip, resulting in surface wear. There are many factors that affect the life of excavator bucket teeth, except for the ore structure. In addition to the degree of softness and hardness, blasting conditions, and the user's repair an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/34C22C38/22C21D1/18
Inventor 钱嘉镕新
Owner NINGBO JIADA PRECISION CASTING
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