Metal, alloy and ceramic part forming method without need of support removal

A technology for ceramic parts and parts, which is applied in the field of forming metal, alloy and ceramic parts that do not need to be supported. It can solve the problems of retained support residues, damaged parts, time-consuming and labor-intensive problems, so as to increase the degree of freedom, reduce the risk of damage, and shorten the manufacturing cycle. Effect

Inactive Publication Date: 2019-05-28
XIAN BRIGHT ADDTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] ① The process of unsupporting is time-consuming and laborious;
[0004] ②There is a risk of damage to parts during the process of unsupporting;
[0005] ③ There may be supports that must be added but cannot be removed inside the part;
[0006] ④Support residue may remain in the part

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The forming of embodiment 1 metal tantalum piece

[0040] (1) Material preparation;

[0041] ① Preparation of mixed slurry for parts materials: take d 50 =15um metal tantalum powder is dried and mixed with dispersant ammonium polyacrylate and phase solvent stearic acid, and then added with photosensitive powder prepared from 1,6-hexanediol diacrylate and benzoin dimethyl ether under dark conditions. Then add diluent polyfunctional acrylate to the resin, stir at 300rad / min for 6h, then vacuum, below -0.06MPa, stand still for 10h, remove the air bubbles therein.

[0042] ②Support material preparation: select photosensitive resin prepared from 1,6-hexanediol diacrylate and benzoin dimethyl ether to add d 50 =20um nylon 12 powder is used as a filler, and the components are uniformly stirred by stirring under the condition of avoiding light, and then left to stand in vacuum to degas.

[0043] (2) support design;

[0044] Support design is carried out at the parts where s...

Embodiment 2

[0052] The forming of embodiment 2 nickel base superalloy parts

[0053] (1) Material preparation;

[0054] ① Preparation of mixed slurry for parts materials: take d 50 =5um nickel-based superalloy powder is dried and mixed with dispersant ammonium polyacrylate and phase solvent polyol, and then added epoxy acrylate, polyurethane epoxy resin and dialkyl acetophenone under dark conditions 1. In the photosensitive resin prepared by diaryliodonium salt, stir at a speed of 400rad / min for 4h to form a slurry with uniform composition and moderate viscosity, and then leave it in vacuum (less than -0.06MPa) for 20h to remove the air bubbles. .

[0055] ②Support material preparation: select photosensitive resin prepared from epoxy acrylate, polyurethane epoxy resin, dialkylacetophenone, and diaryliodonium salt to add d 50 =40um PC powder is used as a filler, and the composition is uniformed by stirring under the condition of avoiding light, and then left to stand in vacuum to degas....

Embodiment 3

[0065] The forming of embodiment 3 alumina ceramic parts

[0066] (1) Material preparation;

[0067] ① Preparation of mixed slurry for parts materials: take appropriate d 50 =1um alumina ceramic powder is dried and mixed with dispersant ammonium polyacrylate and phase solvent polyalcohol, then add the photosensitive resin prepared by cycloaliphatic epoxy resin and sulfonium salt under dark conditions, and then add Propyl glycidyl ether was stirred at a speed of 600 rad / min for 3 hours to form a slurry with uniform composition and moderate viscosity, and then stood in vacuum (below -0.06MPa) for 10 hours to remove the air bubbles.

[0068] ②Support material preparation: select photosensitive resin prepared from 1,6-hexanediol diacrylate and benzoin dimethyl ether to add d 50 =40um PBT powder is used as a filler, and the composition is uniformed by stirring under the condition of avoiding light, and then left to stand in vacuum to degas.

[0069] (2) support design;

[0070]...

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Abstract

The invention discloses a metal, alloy and ceramic part forming method without need of support removal. The method specifically comprises the steps that mixed sizing agents of part materials and supporting materials are prepared; the portion, needing to be supported, of a part is supported; the prepared mixed sizing agents of the part materials and supporting materials are loaded into corresponding material bins in a forming bin of multi-material forming light curving equipment separately, the layer information of a model after supporting design is guided in, a support is formed in the material bin with the supporting materials in the forming process of each layer of the model, then the part is formed in the material bin with the part materials, and a formed part blank is obtained; and thepart blank which is subjected to light curing forming is subjected to aftertreatment. The metal, alloy and ceramic part forming method without need of support removal does not need to specially set asupport removal procedure, shortens the manufacturing period and reduces the damage risk of the part.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing methods, and relates to a method for forming metal, alloy and ceramic parts without support. Background technique [0002] Compared with traditional processing methods, additive manufacturing technology has many advantages compared with traditional processing methods such as short cycle, fast response, and high degree of freedom. It is used as a supplementary means to traditional processing methods in the manufacturing industry. The manufacture of material parts such as metals, alloys and ceramics in the field of tools has gained a large market. However, in the various additive manufacturing processes that can be used to form metals, alloys, and ceramics, it is necessary to add supports first during the forming process, and then remove the supports through special physical or chemical methods. Restricted by the removal of the support process, when using the additive manufacturing p...

Claims

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Application Information

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IPC IPC(8): B29C64/10B29C64/124B29C64/129B29C64/30B29C64/314
Inventor 徐天文赵晓明
Owner XIAN BRIGHT ADDTIVE TECH CO LTD
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