Quenching process applied to high-hardness engineering machinery

Abstract

The invention discloses a quenching process applied to high-hardness engineering machinery and belongs to the technical field of machining methods for excavator parts. The quenching process comprises the following steps: (1) manufacturing of a sand box which comprises an upper sand box body and a lower sand box body: forming a bucket tooth cavity in the lower sand box body, arranging electric heating tubes around the bucket tooth cavity, and arranging a mold-releasing liquid guiding mechanism with an automatic daubing function; (2) smelting; (3) casting; and (4) forming: ensuring that a rotating table stop rotating after condensation forming, opening the sand box and taking out a mold. By adoption of the quenching process disclosed by the invention, the technical problem that the top and the root of a conventional bucket tooth are made of a uniform material, and thus the conventional bucket tooth is short in service life can be solved; the quenching process is widely applied to the production of excavator bucket teeth; and meanwhile, the mold-releasing liquid is more convenient to daub, and the quenching is further facilitated.

Description

technical field [0001] The invention relates to a heat treatment process for engineering machinery, in particular to a quenching process for high-hardness engineering machinery. 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 the outside to the inside as a whole, which is the heat treatment before met...

AI Technical Summary

Problems solved by technology

Therefore, the material of the bucket teeth directly affects the service life of the bucket teeth, and from the analysis of the failure causes of the bucket teeth, the material of each position of the bucket teeth is best inconsistent, but this brings a technical problem to the casting of the bucket teeth

In addition, the product needs to apply release powder to the cavity before die-casting, which is very troublesome to operate

[0005] In addition, when the bucket teeth are quenched, it is necessary to manually control the movement of the conveying rollers, which is very troublesome to operate

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