Recent

Messe Dusseldorf
Rösler Oberflächentechnik GmbH

Impact of Lubrication for Continuous CGI Cutting

Aug. 14, 2013
The machinability of compacted graphite iron (CGI), and the performance of selected metalworking fluids were assessed in a turning operation used to simulate the continuous cutting conditions that occur during engine cylinder boring.

The machinability of compacted graphite iron (CGI), and the performance of selected metalworking fluids were assessed in a turning operation used to simulate the continuous cutting conditions that occur during engine cylinder boring. A turning operation was performed on the outside surface of both CGI and gray iron test cylinders. Testing involved the use of tungsten carbide cutting inserts at cutting speeds of 250 m/min, and polycrystalline boron nitride (PCBN) cutting inserts at cutting speeds of 700 m/min. Two metalworking fluids were tested, which included one considered to be standard for conventional cast iron machining, (Fluid 37), and one (Quakercool 7020-CG) engineered specifically for use in machining CGI. In addition to fluid lubricated machining, machining was also done under dry conditions.