Metal Low Temperature Brittleness and Low Temperature Machining

Abstract:

Most metal materials tend to produce brittle fracture at low temperature. Nominal stress of producing brittle fracture is low, generally lower than yield limit. By use of this property, the machinability of the workpiece, tool life and workpiece surface quality can be improved. Classification and application of low temperature machining was introduced in the paper. Tests of low temperature machining were carried out. The test results show low temperature machining is superior to the cutting in normal temperature for the aspects of tool life and the roughness of workpiece surface.

• Periodical: Applied Mechanics and Materials (Volume 79)
• Pages: 288-292
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.79.288
• Online since: July 2011
• Authors: Li Hong Liu, Han Bing Cao, Zhan Ni Li
• Keywords: Application, Classification, Cutting Test, Low Temperature Brittleness, Low Temperature Machining

References

[1] Riyao Chen, Metal cutting theory. Beijing: China Machine Press, 2002(in Chinese).

[2] Daxiao Chen, Mechanisms and machine design manual: Beijing: Chemical Industry Press, 2002(in Chinese).

[3] Wenbin Li, Low temperature applied engineering. Beijing: Weapons Industry Press, 1992(in Chinese). Fig. 5 The roughness of workpiece Fig. 4 Tool life curve.