Casting process of excavator bucket teeth

A technology of excavator bucket teeth and casting process, which is applied to the casting process of excavator bucket teeth and the processing field of excavator accessories, can solve problems such as short service life, and achieve the advantages of improving service life, improving service life and increasing density. Effect

Inactive Publication Date: 2015-05-06
ZHEJIANG WANLI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Specifically, the technical problem to be solved by the present invention is to provide a casting process for excavator buck

Method used

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  • Casting process of excavator bucket teeth
  • Casting process of excavator bucket teeth
  • Casting process of excavator bucket teeth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] like figure 1 and figure 2 Commonly shown, the present invention provides a casting process for bucket teeth of an excavator, comprising the following steps: (1) making a sand box, the sand box includes an upper sand box 2 and a lower sand box 1, and the upper sand box 2 is provided with Sprue cup 5 and sprue, bucket tooth cavity 3 is provided on the lower sand box 1, the bucket tooth cavity 3 is frustum-shaped, electric heating tube 4 is arranged around the bucket tooth cavity 3, the upper sand box 2 and the lower sand box The box 1 is fixedly installed on a turntable 6 driven by a power unit after mold closing. The center of rotation of the bucket tooth cavity 3 is consistent with that of the turntable 6. The sprue adopts a straight sprue to ensure the smooth flow of molten steel. Casting; (2) smelting, when the temperature reaches 1560°C, feed silicon-calcium-barium core wire for immersion deoxidation treatment, control the calcium weight percentage to 0.0015-0.002...

Embodiment 2

[0036] like image 3 As shown, the present invention provides a casting process for excavator bucket teeth, the process is basically the same as that of Embodiment 1, the difference is that the bucket tooth cavity 3 is flat, and the bucket tooth cavity 3 and the rotating table 6 The center of rotation is set eccentrically, so that the wear-resistant and hardened alloy materials are piled up on one side during casting, which is especially suitable for the bucket teeth of the ground-breaking type and the bucket tooth of the shovel type, which greatly improves the hardness and wear resistance of the lower surface of the bucket teeth , prolong the service life of this type of bucket teeth.

Embodiment 3

[0038] like Figure 4 As shown, the present invention provides a casting process for excavator bucket teeth, the process is basically the same as that of Embodiment 2, the difference is that several flat bucket tooth cavities 3 are eccentrically arranged around the center of rotation, and the cast The radially arranged flat sprue and the vertically arranged straight sprue are used to cast several bucket teeth at the same time, which greatly improves the forming efficiency of the bucket teeth, realizes mass production, and further reduces production costs.

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Abstract

The invention discloses a casting process of excavator bucket teeth and belongs to the technical field of processing methods of excavator parts. The process comprises the following steps: (1) preparing a sand box; (2) smelting; (3) casting, that is, hoisting out steel ladle to cast, starting a power device during casting, rotating a rotation table, controlling the temperature of a lower sand box simultaneously, then pouring molten steel with 1/4 of a bucket tooth cavity, adding first alloy in a mixed box along with flow, pouring in a pouring cup, continuously pouring molten steel in the mixed box, and adding second alloy in the mixed box along with flow; and (4) molding, that is, stopping rotation of the rotation table after condensation molding, and opening the box to demold, wherein the sand box comprises an upper sand box and the lower sand box, the lower sand box is provided with the bucket tooth cavity, an electrical heated tube is arranged at the periphery of the bucket tooth cavity, and the upper sand box and the lower sand box are subjected to mold closing to be fixedly installed on the rotation table driven by the power device. By utilizing the casting process, the technological problems of uniform material and short service life of tooth tops and tooth roots of current bucket teeth are solved, and the casting process is widely applied to excavator bucket teeth production.

Description

technical field [0001] The invention relates to a casting process of engineering machinery accessories, more particularly to a casting process of excavator bucket teeth, and belongs to the technical field of processing methods of excavator accessories. Background technique [0002] The bucket tooth is an important part of the excavator, and it is also a vulnerable part. It is a combined bucket tooth composed of a tooth seat and a tooth tip, and the two are connected by a pin. Since the tooth tip is the tooth tip that fails due to wear and tear of the bucket teeth, it is only necessary to replace the tooth tip. [0003] At present, most of the bucket teeth are formed in batches through the casting process. After the bucket tooth blanks are cast, diathermy forging is the most important node in the bucket tooth forming process. The diathermy forging can be completed by selecting intermediate frequency induction heating equipment (diathermy is for the The metal is heated from t...

Claims

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Application Information

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IPC IPC(8): B22C9/22B22C9/02B22D27/08B22D27/04
Inventor 应寒冰
Owner ZHEJIANG WANLI UNIV
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