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Journal of Instrumentation Technology & Innovations Review Article

Advanced Micromachining with Abrasive Jet Machining: Experimental Observations and Model Comparisons

  1. Allamsetti Yogesh Department of Mechanical Engineering, Koneru Lakshmaiah Educational Foundation, Vaddeswaram, Guntur,
  2. Pothamsetty Kasi V. Rao Department of Mechanical Engineering, Koneru Lakshmaiah Educational Foundation, Vaddeswaram, Guntur,
  3. B. Vadiraj Department of Mechanical Engineering, Koneru Lakshmaiah Educational Foundation, Vaddeswaram, Guntur

Abstract

Abrasive Jet Machining (AJM), also known as Micro Blast Machining, is a non-traditional machining process that removes material through the erosive action of a high-velocity gas jet carrying fine abrasive particles. This process is particularly effective for machining intricate shapes in hard and brittle materials that are heat-sensitive and prone to chipping. Similar to sandblasting, AJM is widely utilized for tasks such as deburring, rough finishing, and micromachining, especially in ceramics, semiconductors, electronic devices, and LCD components. This article presents a series of experiments conducted to evaluate the influence of AJM process parameters on the material removal rate (MRR) and the hole dimensions in glass plates, using various types of abrasive particles. The experimental results validate the proposed mathematical model and are compared with other theoretical models. It was observed that an increase in nozzle tip distance (NTD) leads to a corresponding increase in the top and bottom surface diameters of the holes, consistent with general AJM behaviour. Furthermore, higher operating pressure enhances the material removal rate. This study offers valuable insights into the optimization of AJM parameters for improved performance and precision in micromachining applications.

Keywords

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