Milling Forces of Compacted Graphite Iron (CGI) and Gray Iron (GI)

Abstract:

Compacted graphite iron (CGI) has excellent comprehensive performance of strength, hardness, abrasion resistance, shock absorption and thermal conductivity as an ideal material for making engine parts. The material performance of CGI is compared with that of gray iron (GI) and spheroidal graphite Iron (SGI). Some research shows that the strong adhesion between the iron and the graphite forms semi-continuous chips when machining CGI which requires more energy than GI cutting, and there's no MnS layer on the cutting edge during CGI cutting. Thus, the cutting tool life of CGI is greatly reduced than GI. The experiment results indicate that the cutting forces of CGI milling are much higher than that of GI when the feed and the depth of cut increase.

• Periodical: Materials Science Forum (Volumes 800-801)
• Pages: 32-36
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.800-801.32
• Online since: July 2014
• Authors: Y. Guo, C.Y. Wang*, H. Yuan, L.J. Zheng, Y.X. Song
• Keywords: Compacted Graphite Iron, Cutting Force, Cutting Tool Life, Milling

References

[1] Dawson, S. Compacted Graphite Iron: Mechanical and physical properties for engine design. 1999, V D I-V D E - VERLAG GMBH: DUSSELDORF. pp.85-105.

[2] Hanquan Qiu, Cheng Zhengde. The 40 Years of Vermicular Graphite Cast Iron in China(I). China Foundry Machinery & Technology, 2006(1): pp.1-9.

[3] Dawson, S. et al. The effect of metallurgical variables on the machinability of compacted graphite iron. SAE Transactions: Journal of Materials \& Manufacturing, 2001. 110: pp.334-352.

[4] Dawson, S. Compacted graphite iron - A material solution for modern diesel engine cylinder blocks and heads. CHINA FOUNDRY, 2009. 6(3): pp.241-246.

[5] Dawson, S. and T. Schroeder, Compacted Graphite Iron: A Viable Alternative. Engineering Casting Solutions AFS, (2000).

[6] Abele, E. A. Sahm and H. Schulz, Wear mechanism when machining compacted graphite iron. CIRP Annals-Manufacturing Technology, 2002. 51(1): pp.53-56.

DOI: 10.1016/s0007-8506(07)61464-4

[7] Sahm, A. E. Abele and H. Schulz, Machining of compacted graphite iron (CGI). Materialwissenschaft und Werkstofftechnik, 2002. 33(9): pp.501-506.

DOI: 10.1002/1521-4052(200209)33:9<501::aid-mawe501>3.0.co;2-w

[8] George, G. CGI high-speed machining machining. World Manufacturing Engineering & Market , 2005(06): pp.89-93.

[9] Gabaldo, S. et al. Performance of carbide and ceramic tools in the milling of compact graphite iron-CGI. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2010. 32(SPE): pp.511-517.

DOI: 10.1590/s1678-58782010000500011

[10] Heck, M. et al. Analytical investigations concerning the wear behaviour of cutting tools used for the machining of compacted graphite iron and grey cast iron. International Journal of Refractory Metals and Hard Materials, 2008. 26(3): pp.197-206.

DOI: 10.1016/j.ijrmhm.2007.05.003

[11] Da Silva, M.B. et al. Analysis of wear of cemented carbide cutting tools during milling operation of gray iron and compacted graphite iron. Wear, 2011. 271(9): pp.2426-2432.

DOI: 10.1016/j.wear.2010.11.030

[12] Pereira, A.A. L. Boehs and W.L. Guesser, The influence of sulfur on the machinability of gray cast iron FC25. Journal of materials processing technology, 2006. 179(1): pp.165-171.

DOI: 10.1016/j.jmatprotec.2006.03.100

[13] Heck, M. et al. Analytical investigations concerning the wear behaviour of cutting tools used for the machining of compacted graphite iron and grey cast iron. International Journal of Refractory Metals and Hard Materials, 2008. 26(3): pp.197-206.

DOI: 10.1016/j.ijrmhm.2007.05.003

[14] Grenmyr, G. et al. Analysis of Tool Wear in CGI Machining. IMETI 2008: International Multl-conference on Engineering and Technological Innovation , Vol I, Proceedings, 2008: pp.34-39.

[15] Gastel, M. et al. Investigation of the wear mechanism of cubic boron nitride tools used for the machining of compacted graphite iron and grey cast iron. International Journal of Refractory Metals & Hard Materials 2000. 18(6): pp.287-296.

DOI: 10.1016/s0263-4368(00)00032-9

[16] Derek, K. Challenges In Cutting CGI. Modern Manufacturing, 2008(28): pp.70-71.