Free manufacturing of heterogeneous materials part by selective laser melting

Weihui, 吴伟辉 Wu; Yongqiang, 杨永强 Yang; Gui-shengi, 毛桂生 Mao; Di, 王迪 Wang; Song, Changhui

doi:10.3788/ope.20192703.0517

Cited by 7 publications

(4 citation statements)

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“…The scraper is made of multiple elastic wires, which can remove excess powder in the same layer during the reciprocating motions of the powder box in order to lay another powder on the same layer. 20 To prevent powder from adhering to the wall of the powder box and causing powder pollution, four powder box cleaning brushes are installed in the walking direction of the powder box. During the reciprocating motions of the powder box, the wall surface of the powder box is automatically cleaned.…”

Section: Structural Composition and Working Principle Of The Forming ...mentioning

confidence: 99%

“…Wu et al 20 proposed a powder supply, laying, and recycling method and device based on the principle of flexible cleaning of excess powder, which can be used for the SLM additive manufacturing of heterogeneous material parts. The experiment shows that this method effectively solves the problem of material distribution in the same layer during the SLM additive manufacturing of heterogeneous material parts.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, TiNi and Ta are two types of non-ferromagnetic materials, which are used as forming materials. Firstly, the separation and purification problem of the TiNi and Ta is solved, then combined with the principle of flexible cleaning of excess powder, 20 it is achieved that the free laying of powder with different compositions in the same layer. The gradient material composition is obtained by real-time powder mixing method.…”

Section: Introductionmentioning

confidence: 99%

“…21 For mixed powders composed of ferromagnetic and non-ferromagnetic powders, the separation and purification of the two heterogeneous materials can be easily achieved by magnetic separation method. Wu et al 20 showed that the 4340 steel powder was separated and purified from the CuSn10 powder/4340 steel powder mixture by magnetic separation, which contains only 0.0774wt% Cu, while the Fe content in CuSn10 powder is only 0.0532wt%, achieving high separation and purification purity.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation on selective laser melting additive manufacturing of non-ferromagnetic heterogeneous material based on TiNi alloy with Ta coating

Long,

Wu,

Wang

et al. 2023

Advances in Mechanical Engineering

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In order to manufacture non-ferromagnetic heterogeneous material by Selective Laser Melting (SLM), it is necessary to solve the separation problem of non-ferromagnetic mixed powders after SLM forming. This research presents how to resolve this problem using TiNi/Ta mixed powders by ultrasonic vibration screening method and the analysis of SLM manufacturing experiment for non-ferromagnetic heterogeneous material. The purity of TiNi and Ta powders after separation could reach 99.7087%wt% and 98.8501wt% respectively, which both reached a relatively high purity. A TiNi alloy sample with Ta coating and TiNi/Ta gradient transition was manufactured successfully by SLM. The material interface of the sample achieves metallurgical bonding, and the color of the sample profile shows a gradient transition. The EDS analysis shows that the material composition changes from Ta ->Ta/TiNi gradient ->TiNi from surface to inside of the sample. The Ta coating contains over 92.5wt% Ta, and the TiNi matrix contains over 98.69wt% TiNi. Along the powder laying direction, it is difficult to clean the small powder near the solid-powder or solid-solid interfaces made of two different materials, which causes micro polluted areas near the interfaces. This study also provides a new method for integrated manufacturing of TiNi alloy part with Ta coating.

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Section: Structural Composition and Working Principle Of The Forming ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations