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Equipment for preparing metal test piece and structural piece by using high-energy beam

A high-energy beam and test piece technology, which is applied in the preparation of test samples, additive manufacturing, additive processing, etc., can solve the problems of poor formability, high manufacturing cost, and inability to take advantage of high-performance metal materials.

Active Publication Date: 2021-08-13
北京煜鼎增材制造研究院股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the manufacturing cost of laser additive manufacturing is high, and it is impossible to form many samples at one time. At present, most of the additive manufacturing materials are based on materials specially developed for traditional processes such as casting or forging. These materials are often manufactured by laser additive manufacturing. Poor performance, unable to take advantage of the advantages of additive manufacturing to prepare high-performance metal materials, it is necessary to develop new materials specially designed for additive manufacturing

Method used

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  • Equipment for preparing metal test piece and structural piece by using high-energy beam
  • Equipment for preparing metal test piece and structural piece by using high-energy beam
  • Equipment for preparing metal test piece and structural piece by using high-energy beam

Examples

Experimental program
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Effect test

Embodiment 1

[0063] Figure 7 Shown are multiple aluminum alloy button-shaped specimens fabricated from the front side of a cooled copper plate using this equipment in high-throughput forming mode. It can be seen that there is a button-shaped sample prepared by laser in each powder loading tank. The added powder composition and processing parameters were changed in the experiment, and a large number of samples with different contents of added ingredients and different laser irradiation power and processing time were obtained. , after metallographic observation, we get Figure 8 As shown in the metallographic structure, it can be seen that after laser processing and water cooling, a relatively dense structure is obtained.

Embodiment 2

[0065] Figure 9Shown is a plurality of columnar high-entropy alloys obtained by cooling the back of the copper plate under the specific structure forming mode of this equipment. In this experiment, the powder feeding rate and processing parameters of different powders were changed. After cutting it from the substrate, several approx. 23cm columnar sample, Figure 10 The metallographic structure is also shown in Fig. 1, and it can be seen that the continuous growth of columnar crystals is generated due to the high thermal gradient caused by laser and water cooling.

Embodiment 3

[0067] Figure 11 Shown is a plurality of columnar nickel-based superalloys obtained by cooling the back of the copper plate under the specific structural forming mode of this equipment. In this experiment, the powder feeding rate, processing parameters and sample growth height of different powders were changed. After cutting it from the substrate , obtained a number of columnar samples ranging from 30cm to 80cm, from Figure 12 From the metallographic structure, it can be seen that the high temperature gradient has obtained continuous directional growth of columnar crystals.

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Abstract

The invention discloses equipment for preparing a metal test piece and a structural piece by using a high-energy beam. The equipment comprises a high-energy beam heat source, an atmosphere protection system, a powder feeding system and a dual-purpose cooling copper plate system for high-flux forming and specific structure forming. The dual-purpose cooling copper plate system for high-flux forming and specific structure forming comprises two cooling copper plates capable of being spliced in a turnover mode and a rail system used for rapidly turning over the cooling copper plates. A plurality of powder containing grooves used for high-flux forming are formed in the surface of one side of each cooling copper plate in a concave mode, and a plurality of positioning threaded holes are formed in the surface of the other side of each cooling copper plate. A passage for circulating a cooling medium is arranged in each cooling copper plate. According to the equipment for preparing the metal test piece and the structural piece by using the high-energy beam, and a method provided by the invention, on the basis of a new material laser metallurgy high-flux preparation technology and a complex structure additive manufacturing technology, laser serves as a heat source, so that on one hand, a large number of small samples with different components or process parameters can be designed and formed at a time, and on the other hand, a large number of samples with specific structures can be formed.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing of metal materials, in particular to a device for preparing metal test pieces and structural pieces with high-energy beams. Background technique [0002] Additive Manufacturing (AM), commonly known as 3D printing technology, is an efficient digital forming technology that obtains three-dimensional parts by building digital models and stacking them layer by layer. Additive manufacturing of complex metal parts has a short cycle time, no need for molds, and fast response design speed. It is a hot technology that is concerned by scientific research and manufacturing. It has been gradually applied to automotive, aerospace, medical and other fields. [0003] Compared with traditional metal parts manufacturing technologies such as forging and casting, laser melting deposition additive manufacturing technology has the following advantages: high-performance material preparation and complex c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F12/00B22F12/20B22F12/58B22F10/28B33Y30/00G01N1/38G01N1/42G01N1/44
CPCB33Y30/00G01N1/38G01N1/42G01N1/44
Inventor 不公告发明人
Owner 北京煜鼎增材制造研究院股份有限公司
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