Ce­ramic in­sert for tough jobs

DEMM Engineering & Manufacturing - - MAINTENANCE MATTERS - www.demm.co.nz/ reader-en­quiry #141231

With its new whiskerre in­forced CW100 ce­ramic in­sert grade for high-speed groov­ing op­er­a­tions, Seco fur­ther en­hances its range of prod­ucts that op­ti­mise wear re­sis­tance and tough­ness in the ma­chin­ing of chal­leng­ing ma­te­ri­als, in­clud­ing In­conel 718, Was­paloy and other heat-resistant su­per al­loys (HRSA).

CW100 is an alu­minium ox­ide-based in­sert with sil­i­con car­bide whiskers (Al2O3-SiCw). When dis­persed into a ma­trix of fine-grained alu­minium ox­ide, th­ese ex­tremely strong whiskers act as re­in­force­ment, adding ten­sile strength and im­prov­ing the frac­ture tough­ness of the brit­tle ma­trix.

An Al2O3-SiCw com­po­si­tion, typ­i­cally made up of 25 to 50 per­cent whiskers, is the tough­est, most ther­mal shock resistant of all the alu­minium ox­ide-based ce­ramic ma­te­ri­als for in­serts. As a re­sult, the CW100 of­fers su­pe­rior wear, frac­ture and notch re­sis­tance as well as high hard­ness at el­e­vated tem­per­a­tures when ma­chin­ing tough ma­te­ri­als at ex­tremely high speeds. CW100 ex­cels in wet or dry ap­pli­ca­tions, but Seco rec­om­mends the use of con­cen­tra­tion-level flood coolant for wet ma­chin­ing.

CW100 comes in the form of solid in­serts. It is avail­able on four in­sert ge­ome­tries with widths of 3.175 mm, 6.35 mm and 7.925 mm. Fur­ther­more, the high honed edge qual­ity of CW100 in­serts al­lows users to achieve su­pe­rior sur­face fin­ish on a wide va­ri­ety of com­po­nents, in­clud­ing cas­ings, shafts, discs and rings for aero­space and power gen­er­a­tion.

CW100 is part of the Se­co­maxTM ceram­ics lineup, which also in­cludes the CS100 sialon-type grade for ISO turn­ing in­serts.

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