| 摘要 |
The present invention relates to a method for the mechanical working of a metal containing copper, aluminum or an alloy thereof. The method is carried out in the presence of an aqueous cooling lubricant containing an alkanol amine of the formula (I): N(R3)(R4)(R5), where R3, R4 and R5 independently of each other designate a group (AO)nH, where AO is an ethyleneoxy group or a propyleneoxy group and n is a number from 2-6, the number of ethyleneoxy groups in relation to the number of propyleneoxy groups is between 2:1 and 1:3. Preferably the alkanol amine is used in combination with a phosphate ester or a carboxylic acid. The lubricant is capable of reducing or preventing the corrosion of both metals as well as iron. In addition it contributes in an essential way to the lubrication.
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