A prefabricated sand mold supports additive manufacturing method for printing metal parts
A technology for metal parts and additive manufacturing, applied in the field of printing complex metal parts based on prefabricated sand mold powder feeding/wire feeding, can solve the problems of not improving the laser melting deposition molding ability, reduce molding costs, meet market demand, avoid mechanical Processing effect
Active Publication Date: 2020-04-14
NANJING ZHONGKE RAYCHAM TECH
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- Application Information
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Problems solved by technology
Additive manufacturing has not improved the ability to form complex parts with laser melting deposition (powder fed printing) and arc additive manufacturing technology (wire fed printing), so this problem needs to be solved urgently
Method used
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[0036] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.
[0037] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of numerous ways, since the concepts and embodiments disclosed herein are not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.
[0038] According to the disclosure of the present invention, a method for additively manufacturing printed metal parts aimed...
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Abstract
The invention proposes a method for prefabricated sand mold support and additive manufacturing of printed metal parts. The prefabricated sand molds are used as the first support, and the metal supports arranged at intervals between the prefabricated sand molds along the horizontal direction of the base plate are used as the second support. Material manufacturing technology to print the metal parts mentioned above: first place all prefabricated sand molds on the substrate according to the corresponding positions, and in the reserved position of the metal support, send powder / wire feeding on the substrate to print the parts that fit the prefabricated sand molds Metal support, before printing metal parts, spray metal powder on the printing position of the prefabricated sand mold for surface treatment, and then use additive manufacturing technology to print metal parts. The present invention prevents the defect that the molten pool collapses due to no structural support in the powder feeding / wire feeding printing stage, thereby causing printing failure, and the present invention avoids redundant mechanical processing and reduces the molding cost of metal parts with complex structures.
Description
technical field [0001] The invention relates to the field of additive manufacturing, and specifically proposes a method for printing complex metal parts based on prefabricated sand mold powder feeding / wire feeding in additive manufacturing. Background technique [0002] 3D printing is now widely used in the field of casting. The commonly used technologies are: Fused Deposition Rapid Prototyping (FDM), Stereolithography (SLA), Selective Laser Sintering (SLS), and Modelless Casting Manufacturing (PCM). ), 3D inkjet printing technology (3DP). 3DP is an ideal molding method to replace traditional casting molds and cores. The molding process does not require operations such as molds and sand mixing, and it perfectly integrates traditional industries and additive manufacturing technologies. The use of 3DP to produce molds and cores not only promotes the development of 3D printing, but also promotes the technological innovation of the foundry industry. [0003] Sand printing The ...
Claims
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IPC IPC(8): B22F3/105C22C14/00C22C9/02C22C21/02B33Y10/00
CPCC22C14/00C22C9/02C22C21/02B22F3/003B33Y10/00B22F10/00B22F10/66B22F10/43B22F10/25B22F10/62B22F10/36B22F10/366B22F10/14Y02P10/25
Inventor 黄金鑫嵇书伟孙中刚邢飞唱丽丽
Owner NANJING ZHONGKE RAYCHAM TECH