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- W2897054108 abstract "This paper reports the research of laser drilling technology with ns pulse laser for making cooling holes in aero-engine with thinner recast layer or even without recast. In research, diverse modes of making holes in nickel-based alloy samples are employed. The first way is making holes with high frequency ns pulse laser in scanning mode to remove material layer by layer, the second one is making holes with high frequency ns laser of relatively higher average power in trepanning mode with assisted gas, the third is making holes with ns pulse train laser in percussion mode. The experimental results show the first way could make a hole free of recast at low power, but at very low material removal rate, depth of holes is limit. The second one need higher energy density compared with in scanning mode to make cooling holes with thinner recast layer of less than 10µm. The third mode could raise processing efficiency greatly, but causes massive recast and splash around entrance area of a hole. Based on the research, the ways of making cooling holes free of recast or with negligible recast could be realized in production are proposed.This paper reports the research of laser drilling technology with ns pulse laser for making cooling holes in aero-engine with thinner recast layer or even without recast. In research, diverse modes of making holes in nickel-based alloy samples are employed. The first way is making holes with high frequency ns pulse laser in scanning mode to remove material layer by layer, the second one is making holes with high frequency ns laser of relatively higher average power in trepanning mode with assisted gas, the third is making holes with ns pulse train laser in percussion mode. The experimental results show the first way could make a hole free of recast at low power, but at very low material removal rate, depth of holes is limit. The second one need higher energy density compared with in scanning mode to make cooling holes with thinner recast layer of less than 10µm. The third mode could raise processing efficiency greatly, but causes massive recast and splash around entrance area of a hole. Based on the resea..." @default.
- W2897054108 created "2018-10-26" @default.
- W2897054108 creator A5039414614 @default.
- W2897054108 date "2013-01-01" @default.
- W2897054108 modified "2023-09-26" @default.
- W2897054108 title "Research on laser drilling in diverse modes by ns pulse laser" @default.
- W2897054108 doi "https://doi.org/10.2351/1.5062874" @default.
- W2897054108 hasPublicationYear "2013" @default.
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