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包层焊接耐腐蚀钢管问世
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《新材料产业》 2002年第12期48-48,共1页
关键词 焊接耐腐蚀钢管 不锈钢 高镍合金层
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Characterization of shear stresses in nickel-based superalloy Mar-M247 when orthogonal machining with coated carbide tools
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作者 CHEN Shao-hsien SU Sen-chieh JEHNG Wern-dare 《Journal of Central South University》 SCIE EI CAS 2014年第3期862-869,共8页
Mar-M247 is a nickel-based alloy which is well known as difficult-to-machine material due to its characteristics of high strength, poor thermal diffusion and work hardening. Calculation of shear stress by an analytica... Mar-M247 is a nickel-based alloy which is well known as difficult-to-machine material due to its characteristics of high strength, poor thermal diffusion and work hardening. Calculation of shear stress by an analytical force model to indicate the effect of coating material, cutting speed, feed rate on tool life and surface roughness was conducted experimentally. Cutting tests were performed using round inserts, with cutting speeds ranging from 50 to 300 rn/min, and feed rates from 0.1 to 0.4 mm/tooth, without using cooling liquids. The behavior of the TiN and TiCN layers using various cutting conditions was analyzed with orthogonal machining force model. Cutting results indicate that different coated tools, together with cutting variables, play a significant role in determining the machinability when milling Mar-M247. 展开更多
关键词 Mar-M247 tool wear orthogonal machining shear stress
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