SU1306935A1 - Lubrication for hot plastic metal working - Google Patents

Abstract

This invention relates to process lubricants for the hot treatment of metals. The aim of the invention is to increase the lubricating, adhesive and anti-wear properties of the lubricant, which increase the resistance of the rolls, the productivity of rolling mills and the quality of the surface to be machined. The lubricant contains, in wt.%: The cubic residue of synthetic fatty acids 10-45; lanolin 1-10; estolides 12 - hydroxystearic acid 1-5; Zinc dialkyldithiophosphate 0.5-2.0; and mineral oil the rest. The lubricant reduces the penetration force by two times, the rolling capacity from 7 to 18% against 3.7 to 8.2% (with a known lubricant), more than doubles the adhesion properties. 4 tab. and (L SLE about O with CO O1

Description

113

The invention relates to rolling production, in particular to technological lubricants for hot metal forming.

The aim of the invention is to increase the lubricating, adhesive and anti-wear properties of the lubricant, causing an increase in the durability of the rolls, the productivity of rolling mills and the quality of the surface to be treated.

For the preparation of a lubricant, the bottoms of synthetic fat are used.

acids (FFA) fraction C, and above,

go

15

20

Samples of lubricants 1-5 were tested on a laboratory two-roll mill 210 (roll diameter 200 mm, speed about rollers 0.5 m / s). The conditions for rolling are: temperature, samples — carbon steel and 3 PS steel, width of samples 60 mm, thickness 4 mm. The adhesion properties of samples 3 and 5 were tested according to industrial conditions (hot rolling of steel) by the degree of lubrication of water from the metal surface and evaluated by the amount of lubricant remaining on the metal sample after flushing%).

The test results are shown in Table. 3,

In tab. 4 shows the results of industrial tests of the proposed lubricant (sample 3) in comparison with islanoline, estolides 12-hydroxystearic acid, Dialkyl dithiophosphate zinc (DF-11), mineral oil I-20A.

The presence in lanolin of a significant amount of cholesterol esters (and its analogues) with higher fatty acids and high molecular weight alcohols, the ability to absorb large amounts of water, the difficulty of saponification provide it with high adhesion (deterioration of the washability of grease with known lubricant (5) with hot rolls cooling water), anticorrosive carbon steels on the stand rozionnye and lubricating properties. No

Estolides of 12-hydroxystearic acid are prepared in a cooking apparatus with a paddle stirrer and oil-heated using the following technology: heating 12-hydroxystearic acid to 100 ° C with a holding time of 3 hours (for dehydration), raising the temperature to 160-170 ° C and condensing at this temperature for 24-30 hours until the acid number decreases with

thirty

continuous sheet mill 1680. Metal temperature 1080 ° C. The lubricant was applied to the work rolls from the front of the stand in the collector of the cooling roll of water. (

Claims (1)

Invention Formula Lubricant for hot pressure treatment of metals, containing mineral oil, Zinc dialkyldithiophosphate and 12-hydroxystearic acid estolides, characterized in that, in order to increase lubricating properties, 40 adhesives and antiwear properties, the lubricant additionally contains cubes of synthetic fatty acids and lanolin in the following ratio of components, wt.% „45 VAT residue of synthetic fluids of other acids 10-45 Lanolin 1-10 170-180 to 35-40. mg KOH / g. The process lubricant is prepared by incorporating these components into mineral oil heated to 65-75 ° C with thorough mixing. The composition of the samples of lubricants are given in table. 1 The proposed samples of lubricants (1-4) tested in comparison with the known composition (5), containing, wt.%: Estolides 12-hydroxystearic acid 2 Diphenyloxide 4 Tributyl phosphate 4 Dialkyldithiophosphate zinc2 Mineral oil Up to 100 In tab. 2 shows the physico-chemical properties of lubricant samples 1-5. Samples of lubricants 1-5 were tested on a laboratory two-roll mill 210 (roll diameter 200 mm, rolling speed 0.5 m / s). Rolling conditions: temperature, samples - carbon steel, steel PS, sample width 60 mm, thickness 4 mm. The adhesive properties of samples 3 and 5 were tested for industrial conditions (hot rolling of steel) by the degree of lubrication of water from the metal surface and evaluated by the amount of lubricant remaining on the metal sample after flushing%). The test results are shown in Table. 3, In tab. 4 shows the results of industrial tests of the proposed lubricant (sample 3) in comparison with the known lubricant (5) during hot rolling of carbon steels in the stand No.  known lubricant (5) during hot rolling of carbon steels in stand no. thirty continuous sheet mill 1680. Metal temperature 1080 ° C. The lubricant was applied to the work rolls from the front of the stand in the collector cooling water rolls. ( Invention Formula Lubricant for hot pressure treatment of metals, containing mineral oil, Zinc dialkyldithiophosphate and 12-hydroxystearic acid estolides, characterized in that, in order to increase lubricating, adhesion and anti-wear properties, the lubricant additionally contains a synthetic residue acids and lanolin in the following ratio of components, wt.% „45 The cubic residue of synthetic fluids of other acids 10-45 Lanolin1-10 Estolides 12-hydroxystearic acid 1-5 50 Dialkyl dithiophosphate zinc 0.5-2.0 1-1 mineral oil Else 10 20 5 3 7 10 2.0 1.5 Mineral oil Up to 100 Up to 100 Up to 100 Up to 100 Viscosity at 50 ° C, cSt 38.9 48.8 63.4, 0 6.1 Acid number, mg KOH / g 13.6 23.7 38.0 42.7 1.0 28.0 40.4 25.4 27.0 45 2 1 1.0 0.5 table 2 60.8 22.0 7.3 20.0 Editor L. Povhan Compiled by E. Ponomareva Tehred A. Kravchuk Proofreader And, Muska Order 1496/23 Circulation 464 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Table 3 Table 4