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简体中文
Haitian Creole
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1. ??? ??? ???? ?????????:
?? ???? ??? ?????? ?? ??? ??? ???? ?? ???? ?? ???? ?? ????? ?? ???? ?? ???? ??? ?????? ??? ????? ????? ?? ????? ?? ?? ???? ?? ????? ????? ????? ????? ??? ?????? ?????? ????? ?? ??? ???? ???? ??? ????? ?? ???? ???? ?? ??? ??????? ??? ??? ???? ??? ??? ?? ????? ????? ?? ????? ?? ??? ??????? ??? ??? ???. ??? ??? ?????? ?? ????? ???? ?? ??? ?? ?????? ????? ??? ???? ????? ?????? ??:
????? ????? - ????? ??? ????? ?? ???? ???? ?? ????? ??? ??? ???? ????? ???? ??? ??? ????? ??? ???? ???? ??? ?????? ??? ?????? ?? ????? ??? ??? ?? ???? ????? ??? ???? ?? ?? ??? ????? ?????? ???? ?? ????? ????? ?? ?????? ???? ?? ?????? ?? ??? ??? ????? ????? ?? ????? ?????? ?? ???? ???? ?? ?????? ??? ?????? ?????? ?????? ?? ??? ????? ????? ?? ?????? ?????? ??? ??? ?? ??? ????? ???? ??? ??? ?? ???? ????? ?? ????? ????? ?? ????? ????? ?? ??????? ?? ??? ?? ?? ?????? ??? ??? ??????? ???? ?? ???? ?? ????? ?? ??? ??????? ??? ??? ??? ??? ??? ???? ??.
Pulse perforation - using high peak power pulse laser to melt or vaporize a small amount of material, usually using air or nitrogen as assistant gas to reduce hole expansion due to exothermic oxidation, and the gas pressure is lower than the oxygen pressure during cutting. Each pulse laser only produces small particle jets that gradually penetrate deeper, so the perforation time for thick plates takes a few seconds. Once the perforation is completed, immediately replace the auxiliary gas with oxygen for cutting. ??? ???? ??????? ?????? ????? ?? ??? ??????? ????? ??????? ?? ??????? ?? ???? ??. ?? ?? ??? ??????? ??? ???? ?? ???? ??? ?????? ???? ???? ?? ???? ?????? ?? ?? ????? ??? ?? ?? ??? ?? temporal and spatial characteristics are important, so generally transverse flow CO2 lasers cannot meet the requirements of laser cutting. ??? ?? ?? ?????? ???? ??????? ?? ??? ???? ??? ???? ?????? ????? ?? ????? ?? ?? ??? ?????? ??? ???? ?? ??? ???? ?? ???? ???? ??? ??????? ??? ?? ?????? ??? ???? ????
Pulse perforation ?? ??????? ???? ?? ?????? ???? ????? ?? ????? ??????? ?? ???? ???? ?????? ?? ????? ????????? ???? ???? ????????? ???? ??? ???? ??? ???? ????????? ?? ????? ????? ????? ????? ????? ?? ????? ??? ????? ???? ??????? ????? ???? ?? ??? ????? ?? ??? ???? ??? ???? focal length, nozzle position, gas pressure etc., ???? ????? ???? ?? ????? ????? ?? ????? ????? ??? ?? ??? ???? ??. ????? ?????? ???? ????? ??? ???? ?? ????? ?? ????? ??????? ???? ??? ???? ??? ??????? ???? ???? ????? ?? ?????? ???? ?????? ??? ???? ????? ??? ?????? ?? ????? ???? ???? ????? ????? ???? ???? ??? ?? ????? ??? ??? ???? ?????
2. ????? ??? ?????? ?? ??? ????? ???? ?? ???? ?? ?????:
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