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Article: Powder performances: a sampling of outstanding powder metallurgy parts recognized in the 2006 Powder Metallurgy Design Awards competition sponsored by the Metal Powder Industries Federation.(METALS & METAL PARTS)
- Article from:
- Appliance Design
- Article date:
- November 1, 2006
CopyrightCOPYRIGHT 2006 BNP Media. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Lawn Mower Pulley and Drum
PM steel parts, a drum and two pulleys, operating in a premium, power lawn-mower blade-override system won the grand prize in the competition's lawn & garden/off-highway market category. Made by Burgess-Norton Mfg. Co., Geneva, Ill.. the parts are formed to a density of 6.9 g/[cm.sup.3]. They have an ultimate tensile strength of 280 MPa (40,000 psi), and a 50-80 HRB hardness range. PM allowed a molded key on the pulleys and hexagonal pockets on the drum that receive the lawn mower blade bolts. The large and small pulleys are sinter-bonded into a single component. PM provided a more than 20 percent cost savings over previous competitive ...