摘要:
Implementations described herein generally relate to additive manufacturing. More particularly, implementations disclosed herein relate to formulations and processes for forming articles via a three-dimensional printing (or 3D printing) process. In one implementation, a method of additive manufacturing is provided. The method comprises dispensing a first layer of a feed material over a platen. The feed material includes a powder mixture comprising a plurality of particulates comprising a first material and a plurality of particulates comprising a second material different from the first material. The method further comprises directing a laser beam to heat the feed material at locations specified by data stored in a computer readable medium. The laser beam heats the feed material to a temperature sufficient to fuse at least the second material.
摘要:
Verfahren zur additiven Herstellung von dreidimensionalen, metallischen Bauteilen (12), wobei die Bauteile (12) schicht- oder abschnittsweise unter Vakuumbedingungen durch Verschmelzen eines metallischen Werkstoffes mit dem Bauteil (12) an eine Bearbeitungsstelle mittels einer Strahlenquelle mit hoher Energiedichte aufgebaut werden. Um die durch die Strahlung selbst an die Bearbeitungsstelle eingetragene Energie relativ gering zu halten, wird vorgeschlagen, dass der metallische Werkstoff als Draht (28) zugeführt wird, wobei der Draht unter Vakuumbedingungen vor dem Erreichen der Bearbeitungsstelle vorgeheizt wird.
摘要:
An additive manufacturing system includes a platen, a dispenser apparatus configured to deliver a layer of powder onto the platen or a previously dispensed layer on the platen, a voltage source coupled to the platen and configured to apply a voltage to the platen to create an electrostatic attraction of the powder to the platen sufficient to compact the powder, and an energy source configured to apply sufficient energy to the powder to fuse the powder.
摘要:
Die Erfindung betrifft eine Einrichtung (20) zur Überwachung der Ausrichtung eines Laserstrahls (5), umfassend: einen Detektor (21) mit einer Öffnung (22) zum Durchtritt des Laserstrahls (5), mindestens zwei Temperatursensoren (24a, b), die an dem Detektor (21) angebracht sind, sowie eine Temperaturüberwachungseinrichtung (23), die mit den mindestens zwei Temperartursensoren (24a, b) verbunden ist, um die Ausrichtung des Laserstrahls (5) relativ zu der Öffnung (22) zu überwachen. Die mindestens zwei Temperatursensoren (24a, b) weisen entweder einen mit zunehmender Temperatur zunehmenden oder einen mit zunehmender Temperatur abnehmenden temperaturabhängigen Widerstand auf und die mindestens zwei Temperatursensoren (24a, b) sind mit der Temperaturüberwachungseinrichtung (23) in einer Reihenschaltung verbunden. Die Erfindung betrifft auch eine EUV- Strahlungserzeugungsvorrichtung (1), welche mindestens eine Einrichtung (20) wie oben beschrieben aufweist, um die Ausrichtung eines Laserstrahls (5) zu überwachen.
摘要:
본 발명은 레이저 압착 방식을 이용하여 플립 칩 본딩을 수행할 때 반도체 칩에 균일도가 일정하게 유지된 스퀘어 빔을 조사하여 넓은 면적에 균일한 열원을 공급할 수 있도록 하는 레이저 압착 방식의 플립 칩 본딩을 위한 레이저 옵틱 장치에 관한 것이다. 본 발명에 레이저 옵틱 장치는 본딩 헤드 모듈의 하부에 설치되어 진공 흡착력에 의해 반도체 칩을 흡착하여 회로 기판에 밀착시켜 가압하는 본딩 헤드에 레이저 빔을 조사하여 반도체 칩이 회로 기판에 본딩될 수 있도록 하는 레이저 옵틱 장치에 있어서, 상기 본딩 헤드(550)의 상부 측면에 설치되어, 외부의 레이저 헤드(300)로부터 발생되어 광 섬유를 통하여 전달되는 레이저 빔을 복수의 렌즈를 통하여 스퀘어(square) 형상의 레이저 빔으로 변환하여 수평 방향으로 출력하는 경통(410)과; 상기 본딩 헤드(550)의 상부에 설치되어, 상기 경통(410)으로부터 출력되는 수평 방향의 레이저 빔을 수직 하향 방향으로 전환하여 본딩 헤드(550)에 조사하여 본딩 하부에 진공 흡착된 반도체 칩에 열원으로 전달하는 반사경(430);을 포함하여 이루어져, 반도체 칩에 균일도가 일정하게 유지되는 스퀘어 형태의 레이저 열원을 공급할 수 있으며, 반도체 칩의 크기에 따라 레이저 빔의 크기를 용이하고 정밀하게 조절할 수 있도록 제공된다.
摘要:
Systems and methods are provided for laser heating in a fluid environment (30). Such a system may include a laser generator (12) and a laser output sub (16) separate from one another via an optical fiber (18). The laser generator may generate a heating laser pulse over the optical fiber. The laser output sub may emit the heating laser pulse to heat a substrate (22) in the fluid environment (30). To enable the heating laser pulse to pass between the laser output sub (16) and the substrate (22), the laser output sub may dispense a laser- transmissive optical grease or a laser-transmissive magnetic fluid, or may generate a vacuum cavitation bubble in the fluid between the laser output sub (16) and the substrate (22).
摘要:
The innovation is targeted at the coating and material production method, which is based on the application of picosecond, femtosecond and attosecond pulses a) in a vacuum, b) in a gas-pressurised mode, c) in liquid state or d) in the clean room standard; the repetition frequency of the pulses is between the span of 100 kHz and 10 Ghz, with fibre reinforcement or semiconductor laser, which operate on the wavelength of the UV-visible-IR light. The laser beams are directed to a separate space a-d) with optic fibres or as a collimated beam and only inside this space is focused to the volatizing / processing material by self-cleansing optics.
摘要:
An example component finishing method includes immersing a surface of a component within a fluid during a finishing process. The method heats fluid near the surface during the finishing to create a convection current within the fluid that carries a byproduct of the finishing away from the surface.
摘要:
Die Erfindung betrifft ein Verfahren zur Ausbildung einer Beschichtung oder dreidimensionalen Strukturelementen auf Substratoberflächen, die mit TiAl gebildet ist/sind. Sie wird/werden durch Laserauftragsschweißen hergestellt. Bei dem erfindungsgemäßen Verfahren werden Titan und Aluminium drahtförmig und/oder bandförmig in reiner oder legierter Form, jeweils als einzelner Draht oder einzelnes Band in den Einflussbereich mindestens eines Laserstrahls zugeführt. Durch den Wärmeeintrag werden sie aufgeschmolzen und dabei die Werkstoffe miteinander vermischt. Dadurch wird die Beschichtung oder dreidimensionale Strukturelemente mit TiAl auf der Substratoberfläche ausgebildet.
摘要:
A method of welding metal alloys and/or coated metals by fusion welding in a gap-free or narrow-gap lap joint configuration comprises applying a heat source in combination with a vacuum system on an area of engagement of said metals, and forming a molten pool between said metals; creating a negative pressure zone above the molten pool by said vacuum system allowing vaporization of the coating with low boiling temperature; and cooling the molten metal to yield a weld. The vacuum system keeps the keyhole continuously open during welding, which provides a channel for the vapors of the coating to escape, thereby suppressing the weld discrepancies of spatter, blowhole and porosity and resulting in high-quality welds.