Wear surface studies on coal water slurry nozzles in industrial boilers

Ding, Zeliang; Deng, Jianxin; Li, Jianfeng

doi:10.1016/j.matdes.2006.02.020

Cited by 9 publications

(1 citation statement)

References 25 publications

(19 reference statements)

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“…Currently, three- and four-way swirl chambers were attached to the body through nipples to change the flow directions only. In some industries, spiral-type nozzles such as spiral full cone, spiral hollow cone and metal drip-free spiral sandblasting nozzles were used to change the flow pattern while machining the workpieces (Ding et al , 2007).…”

Section: Influence Of Type Of Nozzle On the Machining Processmentioning

confidence: 99%

Challenges in abrasive jet machining of fiber-reinforced polymeric composites – a review

Madhu

Balasubramanian²

2020

WJE

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Purpose The purpose of this study is for solving many issues in production that includes processing of complex-shaped profile, machining of high-strength materials, good surface finish with high-level precision and minimization of waste. Among the various advanced machining processes, abrasive jet machining (AJM) is one of the non-traditional machining techniques used for various applications such as polishing, deburring and hole making. Hence, an overview of the investigations done on carbon fiber-reinforced polymer (CFRP) and glass fiber-reinforced polymer (GRFP) composites becomes important. Design/methodology/approach Discussion on various approaches to AJM, the effect of process parameters on the glass fiber and carbon fiber polymeric composites are presented. Kerf characteristics, surface roughness and various nozzle design were also discussed. Findings It was observed that abrasive jet pressure, stand-off distance, traverse rate, abrasive size, nozzle diameter, angle of attack are the significant process parameters which affect the machining time, material removal rate, top kerf, bottom kerf and kerf angle. When the particle size is maximum, the increased kinetic energy of the particle improves the penetration depth on the CFRP surface. As the abrasive jet pressure is increased, the cutting process is enabled without severe jet deflection which in turn minimizes the waviness pattern, resulting in a decrease of the surface roughness. Research limitations/implications The review is limited to glass fiber and carbon fiber polymeric composites. Practical implications In many applications, the use of composite has gained wide acceptance. Hence, machining of the composite need for the study also has gained wide acceptance. Social implications The usage of composites reduces the usage of very costly materials of high density. The cost of the material also comes down. Originality/value This paper is a comprehensive review of machining composite with abrasive jet. The paper covers in detail about machining of only GFRP and CFRP composites with various nozzle designs, unlike many studies which has focused widely on general AJM of various materials.

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Section: Influence Of Type Of Nozzle On the Machining Processmentioning

confidence: 99%