-
公开(公告)号：EP0287657B1
公开(公告)日：1994-12-28
申请号：EP88900160.8
申请日：1987-10-14
发明人： DECKARD, Carl, R.
CPC分类号： G05B19/41 , B05C19/00 , B05C19/008 , B22F3/004 , B22F3/105 , B22F3/1055 , B22F7/02 , B22F2003/1052 , B22F2003/1056 , B22F2998/00 , B22F2998/10 , B23K26/0624 , B23K26/08 , B23K26/082 , B23K26/34 , B29C35/045 , B29C41/12 , B29C41/46 , B29C64/153 , B33Y10/00 , B33Y30/00 , B33Y40/00 , C23C24/08 , C23C24/10 , C23C26/02 , G05B19/4099 , G05B2219/49013 , G05B2219/49018 , Y02P10/295 , B22F3/26
摘要： A method and apparatus (10) for selectively sintering a layer of powder to produce a part comprising a plurality of sintered layers. The apparatus includes a computer (40) controlling a laser (12) to direct the laser energy onto the powder to produce a sintered mass. The computer either determines or is programmed with the boundaries of the desired cross-sectional regions of the part. For each cross-section, the aim of the laser beam is scanned over a layer of powder and the beam is switched on to sinter only the powder within the boundaries of the cross-section. Powder is applied and successive layers sintered until a completed part is formed. The powder may consist of a plastic, metal, ceramic, or polymer substance. In the preferred embodiment, the aim of the laser is directed in a continuous raster scan and the laser turned on when the beam is aimed within the boundaries of the particular cross-section being formed. Preferably, the powder dispensing mechanism includes a drum which is moved horizontally across the target area and counter-rotated to smooth and distribute the powder in an even layer across the target area. A downdraft system provides controlled temperature air flow through the target area to moderate powder temperature during sintering.
-
32.发明公开Multiple material systems and assisted powder handling for selective beam sintering 失效多种材料系统和辅助粉末处理选择性射束烧结
公开(公告)号：EP0416852A3
公开(公告)日：1991-05-08
申请号：EP90309633.7
申请日：1990-09-04
CPC分类号： B22F3/004 , B22F3/1055 , B22F2003/1052 , B22F2003/1056 , B23K26/32 , B23K26/34 , B23K2203/50 , C23C24/106 , G05B2219/49013 , G05B2219/49018 , Y02P10/295
摘要： A method and apparatus for selectively sintering a layer of powder to produce a part comprising a plurality of sintered layers. The apparatus includes a computer (40) controlling a laser (30) to direct the laser energy onto the powder (26) to produce a sintered mass. The computer (40) either determines or is programmed with the boundaries of the desired cross-sectional regions of the part. For each cross-section, the aim of the laser beam (64) is scanned over a layer of powder (57) and the beam is switched on to sinter only the powder within the boundaries of the cross-section. Powder is applied and successive layers (54, 55, 56, 57) sintered until a completed part is formed. Preferably, the powder comprises a plurality of materials having different dissociation or bonding temperatures. The powder preferably comprises blended (901, 902) or coated (1001, 1002) materials.
-
公开(公告)号：EP0199589B1
公开(公告)日：1989-01-18
申请号：EP86303045.8
申请日：1986-04-22
CPC分类号： C23C26/00 , B22F3/10 , B22F3/1055 , B22F2003/1052 , B23K35/302 , H05K3/247 , H05K3/3494 , H05K2201/0112 , H05K2201/0323 , H05K2203/107 , Y02P10/295
-
34.发明公开Improvement in depositing metal powders on a substrate using laser 失效Abscheiden von Metallpulvern auf einem Substrat unter Verwendung von Laser。
公开(公告)号：EP0199589A1
公开(公告)日：1986-10-29
申请号：EP86303045.8
申请日：1986-04-22
CPC分类号： C23C26/00 , B22F3/10 , B22F3/1055 , B22F2003/1052 , B23K35/302 , H05K3/247 , H05K3/3494 , H05K2201/0112 , H05K2201/0323 , H05K2203/107 , Y02P10/295
摘要： An improved process for selectively coating or covering a substrate surface, e.g., that of a copper conductor, with materials like silver or gold, by using a laser beam, uses lampblack. It is essential that neither the substrate material nor the coating material should react with carbon, when applied to either the substrate surface or the material. The added lampblack, in addition to enhancing the absorbent surface characteristics of the substrate surface, acts as a deoxidizing and fluxing agent to clean the substrate surface and promote effective wetting by the molten material during a laser processing procedure.
摘要翻译： 通过使用激光束来选择性地涂覆或覆盖基底表面（例如铜导体）与诸如银或金的材料的改进方法使用灯黑。 当基材表面或材料应用时，基材和涂层材料都不应与碳反应是非常重要的。 除了增强基材表面的吸收性表面特性之外，所添加的灯泡还用作脱氧助熔剂以清洁基材表面，并在激光加工过程中促进熔融材料的有效润湿。
-
-
-
搜索结果
34 条记录 (耗时 0.009 秒)
