Application of sodium bicarbonate abrasive jet technology for PCB desmear process: Conditions and simulation

Jiang, Zhouyu; Yao, Cong; Li, Xiaoxuan; Xu, Jiale; Wang, Mingliang

doi:10.1016/j.jclepro.2023.136584

Cited by 4 publications

(1 citation statement)

References 28 publications

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“…However, under adequate circumstances, these abrasives can be considered as promising alternatives for common abrasives. Jiang et al [34] employed sodium bicarbonate as an abrasive for desmearing of PCBs. They achieved surface quality comparable to industrial levels and found that this abrasive also has high recycling potential.…”

Section: Introductionmentioning

confidence: 99%

Determination of the Feasibility of Using Eco-Friendly Walnut Shell Abrasive Particles for Pocket Milling of Titanium Workpieces by Abrasive Waterjet Technology

Karkalos,

Karmiris-Obratański

2023

Metals

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Abrasive waterjet technology is nowadays a well established non-conventional method with significant capabilities for material removal with high productivity and minimum environmental impact compared to other processes. However, in order to be in line with the green transition directives, further steps are required to ensure the sustainability of manufacturing processes and reduce the risk of material depletion by employing recyclable materials. For this purpose, an eco-friendly abrasive material such as walnut shell is employed for pocket machining of a titanium alloy workpiece. Due to the relatively low hardness of this material, compared to common abrasive materials such as garnet or alumina, it is required to determine the appropriate range of process parameters in order to obtain high-quality pockets with high productivity. Thus, in this work, a comprehensive experimental study is conducted in order to determine the effect of various process parameters on pocket depth, pocket width, material removal rate, flatness and parallelism error of produced pockets. The results prove the feasibility of using walnut shell as abrasive material for pocket milling, although MRR is almost an order of magnitude lower than the values commonly obtained for usual abrasives. Moreover, it is not recommended to use jet pressure values over 250 MPa so dimensional accuracy, flatness and parallelism error are maintained in acceptable values.

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Section: Introductionmentioning

confidence: 99%

Determination of the Feasibility of Using Eco-Friendly Walnut Shell Abrasive Particles for Pocket Milling of Titanium Workpieces by Abrasive Waterjet Technology

Karkalos,

Karmiris-Obratański

2023

Metals

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An experimental investigation into the potential of employing mixed eco-friendly abrasives during AWJ milling of nickel-based superalloy

Karkalos,

Karmiris-Obratański,

Kudelski

2024

Int J Adv Manuf Technol

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Non-conventional machining processes are capable of achieving higher performance compared to conventional ones due to their inherent characteristics and higher amount of parameters which can be favorably regulated. Although the correlation between the most important process parameters and process outcome has been already established for a wide range of conditions and workpiece materials, the introduction of new considerations related to the three pillars of sustainability require further investigation on new means for the enhancement of AWJ milling process. As one of the most important parameters in AWJ milling is the abrasive material, the introduction of new materials may offer considerable advantages from different perspectives. Thus, in the present work, a comprehensive investigation on the efficiency of using eco-friendly, mixed abrasives is carried out under various conditions such as different traverse feed rate, abrasive mass flow rate, water jet pressure, jet impingement angle, and mixing ratio. The feasibility of using mixed abrasives is evaluated in terms of achievable depth of penetration, kerf width, kerf taper angle as well as material removal rate (MRR), and cutting efficiency. The findings indicate that among other factors, the mixing ratio plays a noticeable role especially regarding MRR and cutting efficiency and can offer an additional effective means to achieve the desired kerf characteristics in conjunction with other significant parameters such as water jet pressure.

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Numerical investigation into the abrasive particle movement characteristics inside the swirling impeller nozzle based on the coupled SPH-FEM method

Li,

Guo

et al. 2024

Powder Technology

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Application of sodium bicarbonate abrasive jet technology for PCB desmear process: Conditions and simulation

Cited by 4 publications

References 28 publications

Determination of the Feasibility of Using Eco-Friendly Walnut Shell Abrasive Particles for Pocket Milling of Titanium Workpieces by Abrasive Waterjet Technology

Determination of the Feasibility of Using Eco-Friendly Walnut Shell Abrasive Particles for Pocket Milling of Titanium Workpieces by Abrasive Waterjet Technology

An experimental investigation into the potential of employing mixed eco-friendly abrasives during AWJ milling of nickel-based superalloy

Numerical investigation into the abrasive particle movement characteristics inside the swirling impeller nozzle based on the coupled SPH-FEM method

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