Abstract
Abrasive water jet machining (AWJM) is one of the effective non-conventional machining processes. AWJM has its effective influence on aeronautical and automobile engineering industries. This paper aims to study the outcome of AWJM process parameters on kerf width and kerf taperness of Inconel-825. Taguchi's DOE is designed for experimental approach. Orthogonal array L25 is selected for experimental work. The influence of various process factors such as Transverse speed, Abrasive flow rate and stand-off distance on the kerf width and kerf taperness was studied. The consequence of the machining parameters was analysed and the optimum process parameters were identified with the help of Grey's relational analysis. Confirmation test was carried out with the optimum values of machining parameters such as Transverse speed-60mm/min, Abrasive Flow Rate-200gm/min and Stand off Distance-4mm in order to illustrate the effectiveness of Grey's relational analysis. The Optical microscopy confirmation test is performed for characterization of morphology and identification of micro cracks.
Highlights
Abrasive water jet machining (AWJM) process utilizes mechanical energy for machining of work pieces at economic machining speeds
AWJM machining process is environmentally safe as it provides an alternative approach for the improvement of the machining performance by enhancing the target material properties at low temperature in the machining processes
Material machining is done by erosion process
Summary
Abrasive water jet machining (AWJM) process utilizes mechanical energy for machining of work pieces at economic machining speeds. AWJM can machine tough and hard materials like composites, super alloys and nimonics .The variety of industrial demands for manufacturing of different parts with a specific geometry has increased day by day with advanced technologies. AWJM machining process is environmentally safe as it provides an alternative approach for the improvement of the machining performance by enhancing the target material properties at low temperature in the machining processes. Material machining is done by erosion process. J.Wang et al, [3] have stated that AWJM machining can generate better kerf quality at higher production rates without any delamination if the cutting process is properly selected.
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