Carbon fiber reinforced composite materials are widely used in military industries such as aerospace due to their high specific strength and good corrosion resistance.However,many defects such as delamination,tearing,and edge gnawing often occur during secondary processing.In order to investigate the effect of ultra-low temperature cooling on mill-ing holes in carbon fiber reinforced composite materials(CFRP)and overcome the processing defects caused by hole mak-ing.Spiral milling experiments were conducted on CFRP materials to compare and analyze the machining quality of holes under dry cutting and ultra-low temperature cutting.The results show that,compared to dry milling holes,ultra-low tempera-ture cooling suppressed the burrs at the inlet and delamination defects at the outlet of CFRP holes,and improved the milling force.The ultra-low temperature cooling method has a positive effect on improving the machinability of CFRP milling holes and suppressing milling hole defects.
carbon fiber reinforced resin matrix compositemilling forcespiral milling of holeultra low temperature cooling
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