Cutting resistance, cutting temperature, cut surface roughness, tool wear, chip treating and others of free cutting aluminum alloy 2011-T3 and 2011-T8, high strength alloy 2017-T4, 5056 alloys having different compositions and anticorrosive free cutting alloys G67-T6 and G67-T8 were examined in wet cutting comparing with ones in dry cutting. Those of a free cutting brass and a free cutting steel were also tasted.
2011 alloys are excellent in machinability especially in cutting resistance and the chip treating. G67 alloys have early the same turning machinability as 2011 with the exception of low speed dry cutting. All the 5056 alloys have nearly the machinability a little better than 2017 which has poor machinability. 5056 alloys have poor machinability in heavy duty dry cutting, but are improved the machi nability especially the cutting resistance, cut surface roughness and chip treating in wet cutting. Cutting oil No. 23 is slight superior to machine oil No. 22.
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