| 摘要 |
Safety chain and rotatable devices for saws include a plurality of base members on which sharp members are retained. The sharp members include sintered particulate material such as tungsten carbide, which has high particle hardness. The base members are formable from sintered particulate material. The sharp members to be formed by powder metal molding, metal injection molding or investment casting to provide the protrusion and recess with a final net shape. The cutting member is one, two or more pieces, and is permanently bonded to or removably disposed on the base member. Bonding material or fasteners can connect the cuffing member to the base or a tip to an insert body; bonding material includes cement, solder, braze and polymer. Safety lobes prevent the teeth from being dislodged. Devices include dado blade, planer blade and bandsaw blade, chain saw, buck saw, rescue saw, automated wood cutting apparatus, circular saw, saw blade, knife, scissors, shears, grass cutter, weed cutter, grass cutting blade and weed cutting blade.
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