New advances in metal-cutting band saw blades promise to help fabricators and metal service centers trim their production cutting costs. Those advances have taken place in both the metallurgy and the manufacturing processes used in making bimetal blades. The Morse Technical and Training Center has watched these changes unfold over the last few years. In fact, the metallurgical and production advances the center has tested have been the foundation for two important new product introductions in the last year alone. Here's what has been going on and how it can help: more than 20 years ago bimetal band saw blades first appeared on the market. These blades had teeth cut into narrow, high-speed steel edges welded to fatigue-resistant backer-strips using electron beams or lasers. Although these bimetal blades were somewhat more expensive than traditional carbon blades, their superior wear resistant high-speed teeth made many times more cuts, justifying the additional expense. Today probably more than 90 percent of all production ban saw cutting applications use bimetal band saw blades with either Matrix II or M42 high-speed steel cutting teeth.
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