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Title:
MONOBLOCK FORGING OF NUCLEAR POWER STEAM GENERATOR HOUSING AND METHOD FOR MOLDING SAME BY FORGING
Document Type and Number:
WIPO Patent Application WO/2017/206552
Kind Code:
A1
Abstract:
A monoblock forging of a nuclear power steam generator housing comprises a monoblock forging body, and a forging manhole seat and a forging pipe hole seat provided on the monoblock forging body, the monoblock forging body having a spherical cap structure, a forging manhole and a forging pipe hole being provided on the forging manhole seat and on the forging pipe hole seat respectively, the forging manhole seat and the forging pipe hole seat being integrated, by forging, with the monoblock forging, the hole centerline of the forging manhole and the hole centerline of the forging pipe hole intersecting at the center of the sphere where the monoblock forging body is located. A method for molding the monoblock forging of the nuclear power steam generator housing by forging comprises the following steps: heating a steel ingot; forging stock blanking; forging stock upsetting and stretching; die forging molding; slab heat treatment; slab roughing; forging molding; forging punching; forging heat treatment; forging machining; performance heat treatment; and finished product processing. The molding method by forging not only realizes the integral molding of the steam generator forging, but also realizes a uniform and dense forging structure and a complete metal flow line, and enables the forging fiber structure to be more consistent with the appearance.

Inventors:
WANG, Xingzhong (No. 8 Weijiu Road, Dongtai Economic Development ZoneDongtai, Jiangsu 0, 224200, CN)
MA, Wujiang (No. 8 Weijiu Road, Dongtai Economic Development ZoneDongtai, Jiangsu 0, 224200, CN)
Application Number:
CN2017/074201
Publication Date:
December 07, 2017
Filing Date:
February 21, 2017
Export Citation:
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Assignee:
SHANGHAI XINMIN (DONGTAI) HEAVY FORGING CO. LTD. (WANG, XingzhongNo. 8 Weijiu Road,Dongtai Economic Development Zon, Dongtai Jiangsu 0, 224200, CN)
International Classes:
F22B37/00; B21J1/06; B21J5/00; B21J5/02; B21J5/08; B23P15/00
Domestic Patent References:
2013-10-03
Foreign References:
CN106051721A2016-10-26
CN205664348U2016-10-26
CN201575449U2010-09-08
CN104259369A2015-01-07
CN103567339A2014-02-12
CN105033154A2015-11-11
CN104722702A2015-06-24
CN104550623A2015-04-29
JPH06269862A1994-09-27
Attorney, Agent or Firm:
BEIJING KEYI INTELLECTUAL PROPERTY FIRM (TANG, DongfengNo. 1-2-502 of Hejingyuan, Jimenl, Hai Dian District Beijing 8, 100088, CN)
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