ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Although diamond tools have been used for over a century, the diamond grits distributionin the matrix is not uniform. This is because the large and light diamond grits tend to segregate fromthe small and heavy metal powder during the mixing process, hence diamond distribution in thediamond tools is intrinsically heterogeneous. As a result, the cutting performance of the diamondtools cannot be optimized.In 1997, Dr. James Chien-Min Sung applied two historical patents that can allow the design ofdiamond distribution according to a predetermined pattern. As the result, the life of diamond toolsmay be doubled; and the cutting speed, may also be twice as high. The three-dimensional sawsegments with arrayed diamond grits were made back in 1999 with the improved performance aspredicted. The Sung invention can allow the diamond tools industry to make ideal saw segment thathas variable diamond size and diamond separation at different regions.Conventional diamond saws contain diamond grits that are distributed randomly in a metalmatrix, as a result, their cutting speeds are slow and their sawing lives are short. In 1997, Dr.James C. Sung applied new patents that revealed revolutionary technology for making diamondtools with diamond grits set in a predetermined pattern. The diamond placement design was firstappeared in a series of DiaGrid® products, such as wire saws and grinding wheels. In 1999,DiaGrid® pad conditioners was introduced and it has since become the world's standard for dressingpads, particularly those used for chemical mechanical planarization of semiconductor devices. In2005, Shinhan adapted the idea and produced saw segments with diamond grits set in apredetermined pattern, their results confirmed that the sawing speed and the life were significantlyimproved over conventional designs
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1101.pdf
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