Abstract
Abstract This work deals with an investigation of the influence of various additives to a base slock cutting oil in order to develop a better oil for deep-hole machining. The investigation has been conducted at the R & D facilities of a major manufacturer for deep-hole boring tools and equipment on the basis of systematic field trials. It has been aiming at developing an oil which gives a maximum cutting efficiency at a minimum wear rate of the tool and the guiding pads. The field trials included deep hole machines of various sizes and makes, which were connected to a central oil-circulating system. The three major types of BTA || tools (solid boring, trepanning and counterboring heads) of various sizes were used. Cut ting edges and guiding pads were exclusively made of carbides of various grades. Materials attempted in the trials ranged from mild carbon steel to high alloy, high-temperature strength, stainless and nitriding steels. A total of four experimental oil charges have been tested and each was br...
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