Method for manufacturing pin shaft through forging

A pin-to-forging ratio technology, applied in the forging field, can solve the problems of failure to meet standards, very high pin performance requirements, and inability to achieve localization, so as to meet technical requirements and improve reliability
CN101722406AInactive Publication Date: 2010-06-09上海新闵重型锻造有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
上海新闵重型锻造有限公司
Publication Date
2010-06-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of forging, particularly to a method for manufacturing a pin shaft through forging, which comprises the following steps of: selecting a proper steel ingot, and repeatedly upsetting and lengthening the steel ingot at the temperature of 1,180-850 DEG C to enable the forging ratio to be not less than 4; then sequentially carrying out performance heat treatment and machining to obtain the pin shaft. The method has the advantages that each performance index of the pin shaft manufactured by using the method satisfies the standard requirement of RCC-M, and ensures the use requirement of the pin shaft for a nuclear power plant, thereby greatly enhancing the security and the reliability and satisfying the technical requirement of such products.
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Description

technical field

[0001] The invention relates to the technical field of forging, in particular to a method for manufacturing pin shafts by forging. Background technique

[0002] In recent years, power shortage has become a bottleneck restricting the sustained and rapid development of China's economy. As an important measure to save energy and adjust energy structure, nuclear power has been included in the national power development plan. The development of my country's nuclear power industry has a history of more than 30 years. It has always been based on the research and trial production of small-scale nuclear power equipment, and has not formed mature manufacturing technology and production equipment capabilities. Therefore, the development of nuclear power in our country is developing in the direction of high power.

[0003] At present, castings and forgings used in mega-kilowatt nuclear power construction projects, such as pin shafts, have very high performance requireme...

Claims

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