Number of publication:   125/2003-BIA

Author:		Sefrin, H.; Kiechle, A.; Walker, G.; Zielasko, W.; Freiler, C.; Thomas, F.; Palm, I.; Eisenblätter, G.; Stäbler, D.; Breuer, D.; Lichtenstein, N.; Quellmalz, K.; Rocker, M.; Wolf, M.; Tigler, A.
Title:		Determining and evaluating the emissions from metal cutting and machining with minimal quantity lubrication
Source:		Gefahrstoffe - Reinhaltung der Luft 63 (2003) No. 10, pp. 417-424, 13 lit. refs., 5 tables, 10 figs. (Language:D)

Abstract

The emissions resulting from processing metals with the use of minimal quantity lubrication were studied in a joint project of the institution for statutory accident insurance and prevention in the metalworking industry in southern Germany (SMBG, Süddeutsche Metall-Berufsgenossenschaft), lubricant producers, industrial firms, and with support from the BG institute for occupational safety and health - BIA (Berufsgenossenschaftliches Institut für Arbeitsschutz). The creation of both cleavage and pyrolysis products was of particular interest. A series of lubricants was tested in the laboratory to determine whether any hazardous substances were emitted. The emissions produced were determined at a spindle lathe test bench while varying the cutting parameters and the processed materials (steel, aluminium, and cast metals). The concentration of the pyrolysis products was found to be very minimal in all tests. Formaldehyde at the source in the work area was only present in trace amounts. In general, it was found that when processing metals with minimal quantity lubrication, the correct selection of lubricants is decisive. Synthetic ester oils and fatty alcohols with a high viscosity, low evaporation rate, high flash point, and toxicological safety have proven themselves in practise over time.

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