Title:
METHOD FOR MAKING PRESSURE VESSEL BY NICKEL ELECTROFOMING
Document Type and Number:
WIPO Patent Application WO/2008/148255
Kind Code:
A1
Abstract:
A method for making pressure vessel by nickel electroforming, which includes
the preparation of the mandrel, producing the copy by electrodeposition and
removing the mandrel. The bath used in the electrodeposition is composed of 60-120
parts by weight of nickel sulphamate, 10-40 parts by weight of boric acid, 2-6
parts by weight of sulfamic acid, 2-6 parts by weight of nickel carbonate, 2-6
parts by weight of nickel chloride and 1000 parts by weight of water. The electrodeposition
is carried out at the pH of 3.50-4.8 , the temperature is 45-70°C, the voltage
and the current density are 12-15 VDC and 0.5-6.0ASD respectively. The present
method is simple and does not require too much apparatus , thus it can save the producing
cost and is more applicable.
Inventors:
WU CHICHUN (CN)
CHEN CHUNGHO (CN)
CHEN CHUNGHO (CN)
Application Number:
PCT/CN2007/002483
Publication Date:
December 11, 2008
Filing Date:
August 17, 2007
Export Citation:
Assignee:
WU CHICHUN (CN)
CHEN CHUNGHO (CN)
CHEN CHUNGHO (CN)
International Classes:
C25D1/02; F41B11/62
Foreign References:
| US3654009A | 1972-04-04 | |||
| JP2001234382A | 2001-08-31 | |||
| CN1170781A | 1998-01-21 |
Attorney, Agent or Firm:
BEIJING ZHONGYUAN HUAHE INTELLECTUAL PROPERTY AGENCY CO., LTD. (Huibin BuildingNo.8 Beichendong Street,Chaoyang District, Beijing 1, CN)
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