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Impact of compressed air pressure on geometric structure of AISI 1045 steel surface after turning with the use of MQCL method

Maruda R. W.

Advances in Science and Technology. Research Journal

2016

Vol. 10, nr 30

159--163

MQL (Minimum Quantity Lubrication) and MQCL (Minimum Quantity Cooling Lubrication) methods become alternative solutions for dry machining and deluge cooling conditions. Due to a growing interest in MQCL method, this article discusses the impact of compressed air pressure, which is one of the basic parameters of generating emulsion mist used in MQCL method, on the geometric structure of the surface after turning AISI 1045 carbon steel. This paper presents the results of measurements of machined surface roughness parameters Ra, Rz, RSm as well as roughness profiles and Abbot-Firestone curves. It was found that the increase in the compressed air pressure from 1 to 7 MPa causes an increase in the roughness of the machined surface (the lowest values were obtained at a pressure of 1 MPa). An increase of emulsion mass flow rate also causes an increase in the value of selected parameters of roughness of the machined surface.

Environment-friendly cutting of cylindrical gears

Fratila D. F., Gyenge C., Ros O. R.

Archives of Materials Science

2007

Vol. 28, nr 1-4

45-50

One of the main sources of environmental pollution during the machining processes is the huge amount of supplied cutting fluids. To avoid the problems caused by use of cutting fluids, considerable progress has been made in the last years in the field of near-dry machining. The conversion from conventional lubrication-cooling processes to minimal quantity lubrication methods demands new tasks classification in the tribological system in order to guarantee the process safety and product quality. In the paper the authors presents their theoretical and practical researches in the field of cylindrical gear milling using several kinds tools, lubrication and cooling methods, in order to evaluate the effects of some environment-friendly techniques.