…..reduced cost machining ceramic material
Three types of structural ceramics have been used for LAM: silicon nitride (Si3N4), partially stabilized zirconia (ZrO2), and mullite (65% alumina and 35% SiO2). Representative machining conditions are 0.1~0.2 mm/rev in feed, 0.5~1 mm in depth of cut, and 1~2 m/s in cutting speed. Usually 300 to 600 W in laser power is sufficient in achieving successful conditions of LAM. Under acceptable machining conditions, segmented chips were generated as opposed to power type chips generated by grinding processes
The overall value of the market for engineering ceramics in the U.S. in 2010 is estimated at $1.7 billion, with an AAGR of 2.7%. Engineering ceramic product applications with good growth prospects in the U.S. in the period 2011-2016 include bio-ceramics, bearings, membranes and general wear parts. The mechanical and wear parts group includes bio-ceramics (orthopedic and dental ceramics), armor, bearings, cutting tools, seals, milling media and other wear-resistant components. The high-temperature process parts include filters for molten metals, kiln furniture and continuous casting parts for steel.