|
contents | news | |||||||||
| New grinding wheels from Citco  The Citco and Gardner Abrasives Operations introduced new, productivity-boosting grinding wheels with features to suit the requirements of grinders with conventional or high-speed spindles. Included are Gardner's 'Black Magic' disc wheels that have a proprietary formulation making them suitable for grinding a wide range of spring materials; high performance cBN button wheels for high-speed dry grinding applications; superabrasive disc wheels for grinding hard or difficult to grind materials including ceramics; and custom designed and engineered wheels using ceramic grain to increase wheel life and reduce dressing to minimize grinding costs.Citco's lineup includes a variety of specialty diamond and cBN grinding wheels that offer the ability to grind at low rpm and achieve lapping tolerances and finishes; a line of monocrystal diamond dressing tools that yield consistent dressing results and longer life that can result in a significant reduction in cost per part; and the company's rotary dressers manufactured with cvd diamond that are custom-designed to meet individual customer requirements. The Gardner Black Magic disc grinding wheel features a new, proprietary bond material that incorporates induced porosity with internal lubricants. This unique design enables a significant productivity improvement in spring grinding when compared with traditional magnesite-bonded wheels. By reversing the direction of the Black Magic grinding wheels every 3-4 hours, downtime for dressing can virtually be eliminated. Even without directional change of the wheels, dressing is drastically reduced. Gardner Abrasives is also featuring its new grinding wheel utilizing bonded cBN for dry grinding of springs. The unique, patented wheel design features multiple layers of cBN, resulting in a consistent finish as well as high performance at speeds of 10,000 sfpm. Another advantage of the new bonded cBN wheel is reduced heat damage. The wheels have been designed to achieve an interrupted spring end cut, which allows the heat of grind to be dissipated faster than a continuous cut. Smaller cBN grain can be used which develops lower heat per grain cut path. Also, less heat is produced because the wheels are able to maintain a sharper cutting edge than, for example, conventional aluminum oxide or ceramic grain abrasives. With these features, the new Gardner bonded cBN wheel is ideal for ultra-high speed spring grinding in a variety of hard metals. This range of materials includes stainless steel, chrome vanadium, chrome silicon, music wire as well as titanium. write your comments about the article :: © 2006 Construction News :: home page |