Microabrasive Technology for Precision Cleaning and Processing

Kohli, Rajiv

doi:10.1016/b978-0-323-29960-2.00014-9

Cited by 4 publications

(3 citation statements)

References 145 publications

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“…Microabrasive processing was a versatile, dry cleaning and processing technique. The process was controlled by five key parameters, such as air or other gas pressure, powder flow rate, and dwell time [11]. Making holes on carbon fibre reinforced polymer composite material were applied by abrasive jet.…”

Section: Introductionmentioning

confidence: 99%

The cell culture of titanium alloy surface modifications by micro-powder blasting and co-blast techniques

Liao

Cheng

Huang

et al. 2019

Surface Engineering

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The surface of Ti6Al4V substrate was modified by two ways: micro-powder blasting and co-blast technique. Micro-powder blasting was done using Al 2 O 3 (of three different sizes) or SiC particles. Co-blast technique was done using the same particles co-blasted with hydroxyapatite (HA) particles. The morphology, roughness, deep impact and contact angle were used to characterise the surface modifications. The Ca/P atomic ratio was also determined by co-blast technique. Finally, the biocompatibility of Ti6Al4V substrate was investigated by surface modification in cell culture (osteoblast-like cell, MG63). The contact angle of Ti6Al4V substrate with surface modification is smaller than that without surface modification. The Ti6Al4V substrates by co-blast technique become more hydrophilic by co-blast technique and exhibit better cell proliferation.

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Section: Introductionmentioning

confidence: 99%

The cell culture of titanium alloy surface modifications by micro-powder blasting and co-blast techniques

Liao

Cheng

Huang

et al. 2019

Surface Engineering

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“…During jet-abrasive processing, the surface of interaction of the coating material with the main material of the product increases significantly [22]. Sometimes, the difference reaches an order of magnitude or more, which always has a positive effect on the adhesive strength of the coating.…”

Section: Sandblastingmentioning

confidence: 99%

Preparation of the Surface of Long-Dimensional Rods of Hydro-Cylinders for Thermal Spraying Using an Abrasive Jet

et al. 2022

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Preliminary cleaning of the surface of hydraulic cylinder rods is of great importance for subsequent coating. The most widely used surface preparation for thermal spraying is jet-abrasive treatment. The shot blast modes provide the hardness and strength of the material being processed. The impact of the abrasive makes the surface rough, increasing the contact area. Experimental studies of jet-abrasive processing of the hydraulic cylinder rod surface, as well as its activation for the thermal spraying, were carried out. The prepared surface of the rod for thermal spraying must meet the requirements for surface roughness and the size of the hardened layer at work. The experiments made it possible to identify the optimal modes of jet-abrasive treatment, which affect surface roughness and abrasive penetration of abrasive. To obtain the desired roughness values, it is preferable to use the following: a steel shot with an abrasive particle size in the range of 0.3–1.5 mm, taking the compressed air pressure in the range of 0.4–0.7 MPa; processing time—within 3.5–5 min; counterflow angle with the surface—70–90°; consumption of abrasive particles—300–500 kg/h. A special installation for jet-abrasive processing has been designed, which makes it possible to restore the surfaces of long rods by thermal spraying directly at the site of operation of the large machines.

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“…Finally, the use of eco-friendly abrasives, most usually obtained through natural or biobased sources, is another interesting concept which can further enhance the sustainability of AWJM apart from the adoption of the aforementioned strategies [32,33]. In practice, various relevant materials such as plastic shot or organic materials such as corn cob, walnut shell, almond shell, coconut shell and apricot or plum stone were already employed for sandblasting purposes, but still nowadays the relevant literature on their use for abrasive waterjet machining remains scarce.…”

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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Microabrasive Technology for Precision Cleaning and Processing

Cited by 4 publications

References 145 publications

The cell culture of titanium alloy surface modifications by micro-powder blasting and co-blast techniques

The cell culture of titanium alloy surface modifications by micro-powder blasting and co-blast techniques

Preparation of the Surface of Long-Dimensional Rods of Hydro-Cylinders for Thermal Spraying Using an Abrasive Jet

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

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