Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/35475
Title: METHOD AND APPARATUS FOR CREATING A THREE-DIMENSIONAL METAL PART USING HIGH-TEMPERATURE DIRECT LASER MELTING
Authors: WANG, XINHUA 
WANG, YUNGAN 
LIM, KUAK CHOI LESLIE
FUH, YING HSI JERRY 
WONG, YOKE SAN 
LUO, JIHUAN
CHENG, HONGBIN
YU, YUEFENG
ZHANG, XIANGLIN
TANG, YAXIN 
LU, LI 
WANG, XUAN
Issue Date: 30-May-2002
Source: WANG, XINHUA,WANG, YUNGAN,LIM, KUAK CHOI LESLIE,FUH, YING HSI JERRY,WONG, YOKE SAN,LUO, JIHUAN,CHENG, HONGBIN,YU, YUEFENG,ZHANG, XIANGLIN,TANG, YAXIN,LU, LI,WANG, XUAN (2002-05-30). METHOD AND APPARATUS FOR CREATING A THREE-DIMENSIONAL METAL PART USING HIGH-TEMPERATURE DIRECT LASER MELTING. ScholarBank@NUS Repository.
Abstract: A computer-controlled apparatus and method for producing metallic parts by laser melting selected regions of a layer(s) of metal powder at a target area are disclosed. The system includes devices for preheating and maintaining a relatively high temperature, e.g. 400° C, of the metal powder so as to join the metal powder together with relatively low laser power, e.g. a 200W CO2 laser. A major powder depositing mechanism with a scraper and a depositing system for a secondary powder are included in the apparatus that allows the powders to be delivered to the target area for selective melting. The metal powder is preheated at either a dispensing cylinder or the target area through thermal conduction and/or is also heated by a heating plate positioned above the platform through radiation. The corresponding machine structures, such as a motion system and a working chamber, are designed to be able to withstand and operated under the high temperature environment.
URI: http://scholarbank.nus.edu.sg/handle/10635/35475
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
WO2002042023A1.PDF1.12 MBAdobe PDF

OPEN

PublishedView/Download

Page view(s)

101
checked on Dec 8, 2017

Download(s)

91
checked on Dec 8, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.