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:
During gray cast iron cutting, the great rate of mechanical energy from cutting forces isconverted into heat. Considerable heat is generated, principally in three areas: the shear zone, rakeface and at the clearance side of the cutting edge. Excessive heat will cause undesirable hightemperature in the tool which leads to softening of the tool and its accelerated wear and breakage.Nowadays the advanced ceramics are widely used in cutting tools. In this paper a compositionspecial of Si3N4 was sintering, characterized, cut and ground to make SNGN120408 and applyed inmachining gray cast iron with hardness equal 205 HB in dry cutting conditions by using digitalcontrolled computer lathe. The tool performance was analysed in function of cutting forces, flankwear, temperature and roughness. Therefore metal removing process is carried out for threedifferent cutting speeds (300 m/min, 600 m/min, and 800 m/min), while a cutting depth of 1 mmand a feed rate of 0.33 mm/rev are kept constant. As a result of the experiments, the lowest maincutting force, which depends on cutting speed, is obtained as 264 N at 600 m/min while the highestmain cutting force is recorded as 294 N at 300 m/min
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.591-593.598.pdf
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