High-Efficiency Grinding Technology
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Grinding is one of the most commonly used machining processes in industry and is considered a precision machining process because of its good size and form accuracy. Grinding competes with other machining processes, such as turning, milling, and polishing, but it continues to retain its niche for processes that the other technologies cannot duplicate. Among the many benefits of grinding are its wide range of applications, no minimum depth of cut, and its facility for self-sharpening. Grinding technology is under continuous improvement, striving for increased productivity, lower cost, and higher-quality products for the consumer. The newest generation of high-efficiency grinding technologies still lies ahead, and it will bring its own complement of challenges and difficulties to be overcome in order to achieve the higher productivity, better product quality, economic efficiency, and environmental sustainability that the industry is seeking.An example of one of the newer grinding technologies is Magnetic Fluid Supported Grinding for the grinding of ceramic balls. Prior to the development of this grinding technology, advanced ceramics such as silicon nitride, alumina, zirconia, and silicon carbide were difficult to shape and finish due to their exceptional hardness and brittleness (Zhang). They were finished using diamond abrasive, and conventional polishing of the ceramic balls was quite time-consuming and expensiveùapproximately three
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ible to several forms of thermal damage during grinding, for example: ôrehardening burn, temper burn, and residual stressesö that result from fluid film boiling in the grinding zone (Howes). Other measures that can reduce thermal damage include:
Using high work speed and optimum wheel speed
Introducing an optimum number of slots into the grinding wheel
Using coarse dressing rather than fine dressing
Using neat oil as a grinding fluid
Maintaining proper temperature and pressure of fluid when using water-based fluid
Using a CBN wheel (Howes).
A new grinding technique is high-efficiency deep grinding (HEDG), also referred to as abrasive machining. HEDG is similar to creep-feed grinding but uses CBN at high wheel speed with plated superabrasive wheels and an increased removal rate along with ôa copious supply of fluidö to increase removal rate (ôAre They for Grinding or Milling?ö). This technique provides ôhigh productivity, good surface integrity and size control, consistent finish, and usually a burr-free part (ôAre They for Grinding or Milling?ö). In addition, part quality is enhanced due to less thermal stress (ôAre They for Grinding or Milling?ö). Further advantages include the higher material removal and freer cutting rate
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Some common words found in the essay are:
Gaffney Redington, Supported Grinding, ELID Webster, Turbine Componentsö, Process Timesö, Howes Grinding, Grinding Millingö, Capes VIPER, Suppressionö External, Technology Grinding, thermal damage, et al, magnetic fluid, ôare grinding, high-efficiency grinding, ôare grinding millingö, hedg grinding, grinding millingö, set-up hedg grinding, grinding technology, ôsingle set-up, slashes process, hedg grinding slashes, ôsingle set-up hedg, slashes process timesö,
Approximate Word count = 3538
Approximate Pages = 14 (250 words per page)
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