A comparison of high speed steels for wood machining

A number of high speed steels (HSS’s) and heat treatment combinations can be applied to wood machining. Seven HSS’s heat treated at two hardness levels were applied In a tool wear test with medium density fiberboard. Each HSS and heat treatment combination was replicated nine tines. The parallel and normal tool force components were the wear indexes after 7,600 inches have been cut. The mean forces were compared by a least significant difference test. The results generally showed that wear resistance was related to hardness; however, exceptions to this relation exist. The composition and solid solution of HSS as controlled by heat treating are also important to tool wear resistance for wood machining.

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