scholarly journals Influence of short-circuitng on machined surface quality in electrical discharge machining of carbon fiber reinforced plastics

Procedia CIRP ◽  
2020 ◽  
Vol 95 ◽  
pp. 403-407
Author(s):  
Makoto Hashizu ◽  
Shinya Hayakawa ◽  
Fumihiro Itoigawa
Keyword(s):  
Carbon Fiber ◽  
Surface Quality ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Fiber Reinforced ◽  
Machined Surface ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Machined Surface Quality ◽  
Fiber Reinforced Plastics

High Aspect Ratio Machining of Carbon Fiber Reinforced Plastics by Electrical Discharge Machining Process

2020 ◽  
Author(s):  
Cibi Makudapathy ◽  
Murali Sundaram
Keyword(s):  
Carbon Fiber ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Machining Process ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics

Abstract Micromachining of Carbon Fiber Reinforced Plastics (CFRPs) is essential for numerous applications in several industries such as aerospace, automotive, defense, shipping, sporting goods, and biomedical industries. The major challenge in machining CFRP by electrical discharge machining (EDM) is due to the non-conductivity of epoxy material which is used as a binder for manufacturing these CRFPs. This study attempts a novel, yet simple approach to ensure the conductivity of the work piece through the entire machining process. Experiments were carried out in this work to assess the feasibility of machining high aspect ratio micro-holes in CFRP by micro EDM. The effect of process parameters such as voltage and feed-rate on the hole quality was studied. Using optimal process conditions, micro hole of 2500 µm deep with an aspect ratio of over 11 was achieved.

Research on Performance of Drilling Carbon Fiber Reinforced Plastics with Diamond Coated Special Drill

2015 ◽  
Vol 1088 ◽  
pp. 733-738
Author(s):  
Xiao Fan Yang ◽  
You Sheng Li ◽  
Zhi Long Xu ◽  
Ju Dong Liu ◽  
Bi Jin Wu
Keyword(s):  
Carbon Fiber ◽  
Surface Quality ◽  
Diamond Coating ◽  
Fiber Reinforced ◽  
Drilling Force ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Exit Surface ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced

The carbide cemented special drills with TiAlCrN/TiSiN coating and diamond coating respectively were selected to drilling on carbon fiber reinforced plastics (CFRP) for a contrast test in this paper. The drilling force , drilling exit surface quality and tool wear were analyzed separately to research the performance characteristics of the two kinds of special drills with different coating. The results show that: under the same cutting conditions, the thrust force of the special drill with diamond coating is smaller than that of the TiAlCrN/TiSiN coating, and the tool life is extended by 2 times at the same time. The diamond coated special drill can improve the drilling surface quality, it is more suitable for drilling CFRP.

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