Title:
METHOD FOR MANUFACTURING A HOLLOW STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2015/070409
Kind Code:
A1
Abstract:
Provided is a method for manufacturing a hollow structure, comprising: providing a multi-layer sheet structure, each layer of the multi-layer sheet structure having a bonding part and a non-bonding part, adjacent layers being fixedly bonded together at the bonding parts; heating the multi-layer structure to a temperature which melts at least some of the layers of the sheet; and at this melting point, using liquid to pressurise adjacent layers such that the multi-layer structure changes shape to form a hollow structure in which adjacent layers are fixedly bonded together at the bonding parts and non-bonding parts form a cavity. This method can be used for manufacturing turbine blades.
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Inventors:
WANG ZHIQIANG (CN)
Application Number:
PCT/CN2013/087108
Publication Date:
May 21, 2015
Filing Date:
November 14, 2013
Export Citation:
Assignee:
SHENZHEN WISDOM ENERGY TECHNOLOGY LTD (CN)
International Classes:
B21D26/021
Foreign References:
| US3623204A | 1971-11-30 | |||
| US20100021693A1 | 2010-01-28 | |||
| US5896658A | 1999-04-27 | |||
| US5253419A | 1993-10-19 | |||
| US5946802A | 1999-09-07 |
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