SU137978A1 - Method of making emulsion grease for cold rolling steel - Google Patents

Description

It is known that for the cold rolling of sheet steel, PKS-1 lubricant prepared on the basis of hydrogenated vegetable oils is used, which provide a maximum stretching ratio of 2.2-2.3.

The disadvantages of these lubricants are the high cost and deficiency of the use of edible fats, as well as the insufficient stretch ratio.

The use of technological lubricant for cold rolling steel from high-melting fats and fatty acids, in particular, an aqueous emulsion of high molecular weight cubic acids formed during the oxidation of paraffin, is not known.

A method is proposed for producing an emulsion lubricant for cold rolling steel from high-melting fats and fatty acids, for example, from cubic acids, which are formed during wax oxidation. The method of preparing a lubricant consists in introducing an emulsifier, for example soap, in an amount of 0.5-1% into water heated to 60-90 ° C, then with continuous stirring, high melting oils or fatty acids are introduced into the mixer in a molten state in the amount of Zdo 10%.

The resulting mechanical mixture is passed through an emulsion pump. The emulsion is cooled and sent to work as a process lubricant.

The advantage of the proposed lubricant is non-deficiency and comparative binge of the initial products, an increase in the steel drawing ratio, while reducing the number of passes.

The use of lubricant was tested at the Zaporizhstal plant and at the Leningrad Steel Rolling Plant on samples of steel 08KP.

№ 137978- 2 Test data are shown in the table:

As a lubricant at the Leningrad plant, a water emulsion of the cubic acids obtained during the oxidation of paraffin was tested. It allowed rolling 12KP steel with a thickness of 0.7 to 0.1 mm in 4 passes instead of 6 passes on 12-roll mills without changing the surface cleanliness, while reducing the total energy consumption by 20%.

The study showed that the surface of the metal after rolling and annealing is clean. The difference in thickness when using the emulsion on 12-roll mills is on the order of ± 1.5. The emulsion is stable, i.e. it does not delaminate during 7-8 days of continuous use.

Subject invention

Claims (2)

1. A method for producing an emulsion lubricant for cold rolling steel by introducing an emulsifier, for example, soap, into heated water, characterized in that, in order to replace the hydrogenated vegetable oils, the lubricant is prepared on the basis of high molecular weight bottom acids obtained by oxidizing paraffin. 2. The method according to claim 1, of which is used, with the fact that the used cubic acids in the molten state are introduced into the heated water with a emulsifier (in their mixture).