Process Parameters Optimization of Polystyrene Powder Selective Laser Sintering Based on Response Surface Methodology

Ran, 鄢然 Yan; Hao, 李浩 Li; Junchao, 李军超 Li; Li, 朱丽 Zhu

doi:10.3788/cjl201946.0302015

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“…The effect of the digital model accuracy includes the conversion accuracy of the digital model as well as the segmentation accuracy of the slicing software [25]. In addition, the physical environment can affect temperature shrinkage [26], sintering shrinkage, and secondary sintering [27,28] (see Figure 1). The effects of these influencing factors are summarized as follows.…”

Section: Analysis Of Sources Of Influence On Powder Bed Dimensional A...mentioning

confidence: 99%

Construction and Compensation of a Dimensional Accuracy Model of a Powder Bed via Laser Sintering

Dai

Guo

et al. 2023

Polymers

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In the laser sintering (LS) printing process, a printed part is formed by sintering layer-by-layer on the powder bed. Thus, it is necessary to consider the dimensional accuracy of the laser-sintered powder bed as an important evaluation index. In this paper, a generalized powder bed–size accuracy compensation model is proposed for non-crystalline thermoplastic polymer materials. Taking polyethersulfone (PES) material as an example, the main factors influencing powder bed dimensional accuracy during LS printing are modeled and analyzed experimentally in this study, including four important factors: laser reference deviation, temperature deviation, density deviation, and secondary sintering deviation. In this study, CX_A200 LS equipment is used for prototyping and verification, a 3D scanning method is used to measure the printed parts, and the measurement results are digitally compared and analyzed. On this basis, the relationship of each influencing factor in the proposed compensation model is determined experimentally, and the experimental results demonstrate that the proposed compensation model is approximately 95% effective in terms of correcting the deviation of powder bed dimensional accuracy.

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Section: Analysis Of Sources Of Influence On Powder Bed Dimensional A...mentioning

confidence: 99%

Construction and Compensation of a Dimensional Accuracy Model of a Powder Bed via Laser Sintering

Dai

Guo

et al. 2023

Polymers

View full text Add to dashboard Cite

show abstract

Process Parameters Optimization of Polystyrene Powder Selective Laser Sintering Based on Response Surface Methodology

Cited by 1 publication

References 0 publications

Construction and Compensation of a Dimensional Accuracy Model of a Powder Bed via Laser Sintering

Construction and Compensation of a Dimensional Accuracy Model of a Powder Bed via Laser Sintering

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