SU1546471A1 - Lubricant for working metals by application of pressure - Google Patents

Abstract

The invention relates to lubricating compositions, in particular, "Aminol" lubricants for cold working of metals, can be used in metallurgical production in rolling and drawing ferrous and non-ferrous metals. The purpose of the invention is to increase the lubricating properties. The lubricant contains, wt.%: Monoethanolamine salts of synthetic fatty acids fraction C ₂₁ -C ₂₅ 40-60

CAB monoethanolamides distillation of synthetic fatty acids of C ₁ -C ₄ 1-3 fraction

sodium salts of synthetic dicarboxylic acids fraction With ₄ -C ₁₁ 0,3-5

water the rest. The use of a new lubricant reduces the drag force from 286 to 254-267 N. Table 2.

Description

The invention relates to technological lubricants for cold processing of metals and can be used in metallurgical production during the rolling and drawing of ferrous and non-ferrous metals.

The purpose of the invention is to increase the lubricating properties of the lubricant, thereby increasing the service life of the lubricant, enhancing the anti-friction and anti-corrosion properties.

To prepare the lubricant, monoethanolamine salts of synthetic fatty acids (SMC) fractions are used.

.45 obtained by mixing monoethanolamine (TU 6-02-915-84) with CJKK fraction С, -С25 (ТУ 38.10716-75) at 85 ° С, monoethanolamides of the cube fraction of the CFA, fraction obtained by condensation at 170-190 ° С, mono-ethanols with a bottom residue isolated during the distillation of the FFA fraction C, -C4 to obtain a purer fraction, and the sodium salts of the synthetic dicarboxylic acid fraction (TU 38.407293-85) are also given below their physico-chemical properties.

cl

О About 4

The mass fraction of dry substances is 10–15%, the pH of the solution is 8–10, the density is 1080 g / m at 30 C, the acid number is 4–6 mg KOH / g, the viscosity is 1, Pi is 0.1 at

30 ° C. The composition of dicarboxylic acids by fraction, m: C4 9; , C6 1.5; C7 2.9; C8 6.3, C, 8.2; C, 06.1, C „2.5. The lubricant is prepared as follows. The estimated amount of water and mono-ethanol is fed into the container for preparing the lubricant, the whole mass is heated to 60 ° C. Then, with stirring, the calculated amount of the Ca, –C2 fractions heated to 70–80 ° C is slowly fed and neutralization is carried out for 1.5–2 h at a temperature not exceeding 80–85 ° С, after which monoethanolamides of the distillation residue are fed into the tank FFA Cc-C fraction and sodium salts of synthetic dicarboxylic acid fraction. The mass is mixed well for 30 minutes. The finished product is a light brown color paste and can be easily diluted with water to the desired concentration required for the drawing or rolling process.

The dried product can also be used for dry drawing. The compositions of lubricants are given in table.1. Emulsions prepared from experimental formulations 1-5 were tested for stability and corrosive action according to GOST. The test results showed no corrosion for all samples (except 1) and all samples are stable.

The antifriction properties of the prepared compositions were evaluated by the strength of the treatment during the stretching of the brass-plated wire with a diameter of 1.05 mm. The drawing process is a plastic reduction in the cross-sectional area of the material as it is drawn through the fiber. The process of drawing is most fully characterized by an indicator — the force of drawing, i.e. force needed to reduce the cross-sectional area of the workpiece by a specified amount

Wire was drawn from a diameter of 1.05 mm to a diameter of 0.98 mm in a single pass with a relative calcination of 12% at a speed of 1.7 x.

Before drawing, wire and fiber samples were degreased and wiped.

dry. The emulsion in the deformation zone filed dropper. The drag force was determined visually by the scale of the instrument.

The averaged results of measuring the dragging force in comparison with the prototype (composition 6) are given in Table 2.

Also determine the change in viscosity over time. This indicator largely determines the service life of the lubricant. An increase in viscosity causes the appearance of a stable foam, worsens the temperature conditions in the deformation zone, which leads to overheating of the working tool and its wear, as a result of which friction conditions deteriorate. Under laboratory conditions, the viscosity measurements of freshly prepared emulsions of the proposed lubricant were carried out.

As can be seen from the data table. 2, the viscosity of the emulsions of the optimal composition of the proposed lubricant practically does not change with time, the drag force decreases from 286 to N.

Claims (1)

Invention Formula A lubricant for cold pressure treatment of metals, characterized in that, in order to improve lubricating properties, the lubricant additionally contains monoethanolamine salts of synthetic fatty acids of the fraction, monoethanol amide of the bottom residue of distillation of synthetic fatty acids fraction and sodium salts of synthetic dicarboxylic acids of the following ratio of components, May D: Mono-ethanol, new salts of synthetic fatty acids of fraction C, (3 Mono-ethanolamides of the cubic residue of distillation of synthetic fatty acids of the fraction Sodium salts of synthetic, dicarboxylic acids of the C4-Cm 0 fraction, Water Remaining. i Table 1 Monoetha nola mi new salts of CKK fraction С2 -CiS Monoethanolamides of cubes from the residue of the distillation of FFA fraction С „-С4 Sodium salts of synthetic dicarboxylic acids of С, -С4 fraction Water 3040506070 0.1 0,10,32,556 Up to 100 Up to 100 Up to 100 Up to 100 Up to 100 Table 2