Abstract
The powder-based 3DP (3D printing) technique has developed rapidly in creative and customized industries on account of it’s uniqueness, such as low energy consumption, cheap consumables, and non-existent exhaust emissions. Moreover, it could actualize full-color 3D printing. However, the printing time and size are both in need of upgrade using ready printers, especially for large-size 3D printing objects. Given the above issues, the effects of height and monolayer area on printing time were explored and the quantitative relationship was given in this paper conducted on the specimens with a certain gradient. On this basis, an XYX rotation method was proposed to minimize the printing time. The mechanical tests were conducted with three impregnation types as well as seven printing angles and combined with the characterization of surface structure based on the scanning electron microscope (SEM) digital images to explore the optimum parameters of cutting-bonding frame (CBF) applied to powder-based 3D printing. Then, four adhesives were compared in terms of the width of bonded gap and chromatic aberration. The results revealed that ColorBond impregnated specimens showed excellent mechanical properties which reached maximum when printed at 45° to Z axis, and α-cyanoacrylate is the most suitable adhesive to bond full-color powder-based models. Finally, an operation technological process was summarized to realize the rapid manufacturing of large-size full-color 3D printed objects.
Highlights
Three-dimensional (3D) printing is a subversive technology which applies to a variety of materials, such as paper [1,2], powder [3,4,5], and liquid [6]
This paper studied the rapid manufacturing of 3D models based on inkjet 3DP technique to break through the capacity constraint of printer with cutting-bonding frame
The correlation between printing time, Z-axial height, and basal area was explored with preset gradient parameters, and a simple formula for estimating printing time was presented, along with the XYX rotation method was proposed to minimize printing time by changing the orientation of the digital model
Summary
Three-dimensional (3D) printing is a subversive technology which applies to a variety of materials, such as paper [1,2], powder [3,4,5], and liquid [6]. With the technological innovation and academic research of 3D printing technology in latest 30 years [8,9,10], some typical 3D printing processes are getting mature and have evoked extensive industrial use in areas including bio-medical, aerospace, and culture industries [11,12,13], such as stereo lithigraphy apparatus (SLA) [14], laminated object manufacturing (LOM) [2,15], selective laser sintering (SLS) [16,17], fused deposition modeling (FDM) [18,19], selective laser melting (SLM) [16,20], and three dimensional printing and gluing (3DP) [21,22]. At the current stage in full-color 3D-printing development, the polyjet technique demonstrates desirable printing precision, but compared with the full-color 3DP technique, the restrictions including the enormous amount of required support material as well as expensive material price reduce the manufacturability of large-size
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