Investigation on abrasive-wall collision mechanism and the universal design method for constraint module in soft abrasive flow polishing

Wang, Tong; Tan, Dapeng; Xu, Weixin; Wang, Chengyan; Tan, Yunfeng; Hou, Yueqiao

doi:10.1007/s00170-023-12134-1

Cited by 2 publications

(1 citation statement)

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“…A boundary layer mesh (BLM) [ 24 ] has several advantages in mold flow simulations, mainly when dealing with flows near solid surfaces. In this study, BLM was used for mold flow simulations because the primary purpose of a BLM is to provide a higher mesh resolution near the walls of the solid surfaces.…”

Section: Resultsmentioning

confidence: 99%

Development of a Silicone Rubber Mold with an Innovative Waterfall Cooling Channel

Kuo,

Lin,

et al. 2024

Polymers

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A conformal cooling channel (CCC) follows the mold core or cavity profile to carry out uniform cooling in the cooling stage. However, the significant pressure drop along the cooling channels is a distinct disadvantage of the CCC. In this study, an innovative waterfall cooling channel (WCC) was proposed and implemented. The WCC cools the injected products via surface contact, replacing the conventional line contact to cool the injected products. The WCC was optimized using numerical simulation software. Silicone rubber molds with two kinds of cooling channels were designed and implemented. The cooling time of the molded part was evaluated using a low-pressure wax injection molding machine. The experimental results of the cooling time of the molded part were compared with the simulation results from numerical simulation software. The results showed that the optimal mesh element count was about 1,550,000 with a mesh size of 1 mm. The simulation software predicted the filling time of the water cup injection-molded product to be approximately 2.008 s. The cooling efficiency for a silicone rubber mold with a WCC is better than that of the silicone rubber mold with a CCC since the core and cavity cooling efficiency is close to 50%. The pressure drop of the WCC is smaller than that of the CCC, which reduces the pressure drop by about 56%. Taking a water cup with a mouth diameter of 70 mm, a height of 60 mm, and a thickness of 2 mm as an example, the experimental results confirmed that the use of the WCC can save the cooling time of the product by about 265 s compared with the CCC. This shows how a WCC can increase cooling efficiency by approximately 17.47%.

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Section: Resultsmentioning

confidence: 99%

Development of a Silicone Rubber Mold with an Innovative Waterfall Cooling Channel

Kuo,

Lin,

et al. 2024

Polymers

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Fundamental Study of Phased Array Ultrasonic Cavitation Abrasive Flow Polishing Titanium Alloy Tubes

Dai,

Li,

Feng

et al. 2024

Materials

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A new method of machining ultrasonic cavitation abrasive flow based on phase control technology was proposed for improving the machining efficiency of the inner wall of TC4 (Ti-6Al-4V) titanium alloy tubes. According to ultrasonic phase control theory and Hertzian contact theory, a model of ultrasonic abrasive material removal rate under phase control technology was established. Using COMSOL Multiphysics 6.1 software, the phase control deflection effect, acoustic field distribution, and the size of the phase control cavitation domain on the inner wall surface were examined at different transducer frequencies and transducer spacings. The results show that the inner wall polishing has the most excellent effect at a transducer frequency of 21 kHz and spacing of 100 mm. In addition, the phased deflection limit was explored under the optimal parameters, and predictive analyses were performed for voltage control under uniform inner wall polishing. Finally, the effect of processing time on polishing was experimented with, and the results showed that the polishing efficiency was highest from 0 to 30 min and stabilized after 60 min. In addition, the change in surface roughness and material removal of the workpiece were analyzed under the control of the voltage applied, and the experimental results corresponded to the voltage prediction analysis results of the simulation, which proved the viability of phase control abrasive flow polishing for the uniformity of material removal of the inner wall of the tube.

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Investigation on abrasive-wall collision mechanism and the universal design method for constraint module in soft abrasive flow polishing

Cited by 2 publications

References 50 publications

Development of a Silicone Rubber Mold with an Innovative Waterfall Cooling Channel

Development of a Silicone Rubber Mold with an Innovative Waterfall Cooling Channel

Fundamental Study of Phased Array Ultrasonic Cavitation Abrasive Flow Polishing Titanium Alloy Tubes

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