Simple method for deformation control during carburizing and quenching of large-diameter heavy-duty gears

A technology of carburizing and quenching and deformation control, which is applied in the direction of manufacturing tools, coatings, furnace types, etc., can solve the problems of large amount of deformation and high scrap rate during carburizing and quenching, and achieve high precision of deformation control, simple operation and low equipment cost Effect
CN102010973AInactive Publication Date: 2011-04-13CRRC QISHUYAN CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CRRC QISHUYAN CO LTD
Publication Date
2011-04-13
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to the technical field of carburizing and quenching as well as deformation control of steel work-pieces, and particularly relates to a simple method for deformation control during the carburizing and quenching of large-diameter heavy-duty gears. In the method, the deformation control can be carried out on the carburizing and quenching of the steel work-pieces by adopting simple facilities under simple operation conditions, so as to reach the expected effect and improve the product quality. The method comprises the following steps of: normalizing of steel work-piece, carburization of the steel work-pieces placed in a direction A, normalization of the steel work-pieces placed in a direction B, quenching of the steel work-pieces placed in the direction B in a static oil, and tempering. The method has the significances of breaking through the situation that the deformation control of the carburizing and quenching of the large-diameter complicated heavy-duty face gears can be controlled only by adopting complicated facilities and complicated technological operations, and simultaneously developing a simple and practical way for the deformation control during the carburizing and quenching of the large-diameter complicated heavy-duty face gears.
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Description

technical field

[0001] The invention relates to the technical field of carburizing and quenching and deformation control of iron and steel workpieces, in particular to a simple method for carburizing and quenching deformation control of large-diameter heavy-duty gears. Background technique

[0002] The high speed and heavy load of high-power gears, especially the batch production of large-diameter web structure carburizing and quenching, put forward higher requirements for manufacturing accuracy. Generally, to control deformation, methods such as quenching press, hot oil quenching or isothermal quenching are often used. However, configuring a quenching press requires a certain amount of equipment cost and equipment production cycle, and due to structural limitations and limited versatility, it is difficult to apply to products of various sizes and structures; hot oil quenching or austempering also has certain equipment. Requirements and corresponding process operation metho...

Claims

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