Manufacturing of metal products
A technology of alloy and silicon alloy, which is applied in processing and manufacturing, manufacturing tools, additive manufacturing, etc., can solve the problems of cost out of process control, expensive, unfeasible, etc.
Inactive Publication Date: 2019-06-18
RENISHAW PLC
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- Description
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Problems solved by technology
[0013] While it is possible to obtain satisfactory quality and mechanical properties comparable to cast or machined aluminum parts by superheating the material with a higher power laser, as the size of the weld pool increases, there are attendant Issues related to cost and / or loss of process control
[0014] Reducing the oxygen content of the atmosphere to a level sufficient to prevent oxide formation can also be so expensive and difficult as to be impractical and / or infeasible in any commercial manufacturing process
Method used
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Embodiment Construction
[0056] figure 1 The SLM process and equipment are schematically shown. The device comprises a ytterbium fiber laser 1 which emits a laser beam 3 . One or more scanning mirrors 2 are used to direct the laser beam 3 onto the powder. The powder is provided on a base plate 4 which can be moved up and down by the operation of a piston 5 . A powder deposition or overcoating mechanism 7 for depositing powder in layers during the SLM process comprises a doctor blade 6 .
[0057] In use, the powder deposition mechanism 7 is used to spread a layer of powder evenly on the substrate, which is provided on the substrate 4 . The powder deposition mechanism 7 is tailored so as to be suitable for use with aluminum powder. Each layer was scanned from the CAD data using the ytterbium fiber laser beam 3 (wavelength (λ) = 1.06 μm, beam spot diameter = 80 μm). The molten powder particles fuse together (solidified portion shown at 8), forming layers of the article or part, and the process is re...
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Abstract
The present disclosure relates to the manufacture of metal articles, and more particularly to the manufacture of metal articles by additive manufacturing techniques, in particular the manufacture of metal articles by additive manufacturing techniques which may include selective melting or sintering of metal powders manufacture. Examples of these techniques may include selective laser melting (SLM), selective laser sintering (SLS), and techniques using electron beams other than lasers. Exemplary embodiments include a method of making an article comprising selectively melting and / or sintering a powder comprising an alloy comprising aluminum, wherein the alloy comprises bismuth.
Description
technical field [0001] The present invention relates to the manufacture of metal products, and more particularly to the manufacture of metal products by additive manufacturing techniques. In particular, the invention relates to the manufacture of metal articles by additive manufacturing techniques which may include selectively melting or sintering metal powders. Examples of such techniques may include selective laser melting (SLM), selective laser sintering, and techniques using electron beams other than lasers. Background technique [0002] Selective laser melting (SLM) is a rapid prototyping (RP) and / or rapid manufacturing (RM) technique that can be used to produce metallic solid and porous articles. Conveniently, the article may have suitable properties for immediate use. For example, SLM can be used to produce disposable articles such as parts or components that are customized according to their intended use. Similarly, SLMs can be used to produce high-volume or low-v...
Claims
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IPC IPC(8): B22F3/105B29C64/153C22C1/04C22C21/00
CPCC22C1/0416C22C21/003C22C21/02C22C21/06C22C21/08C22C21/10C22C21/16B23K26/342B33Y70/00B33Y10/00B33Y30/00B33Y80/00C22C21/00Y02P10/25B22F10/28B22F10/36B22F10/366B22F12/67B22F10/32B23K15/0086B23K15/10B23K26/12B65D85/70
Inventor 克里斯托弗·萨克利夫彼得·福克斯
Owner RENISHAW PLC