SU1384607A1 - Lubricant for cold forming of metals - Google Patents

Abstract

The invention relates to lubricating compositions, in particular to a lubricant for cold pressure working of metals. In order to improve the separation and antifriction properties of the lubricant has the composition, wt.%: Soap stock of vegetable oils 7.0-9.0; alkali metal salt of synthetic fatty acids fraction С, о-C, g 1.5-2.5; dizthanolamide fatty acids fraction t ie Cis, 5; oleic acid 1.8-2.2; trizanolamine 0.3-0.5; ethylenediaminetetraacetic acid di-sodium salt 0.3-0.5; mineral oil 40.0-45.0; styrene-butadiene or butadiene carboxylate latex 2.0-5.0; water the rest. 2 tab. (L

Description

00

00 4

O5

The invention relates to lubricants for cold working of metals by pressure and can be used in the manufacture of steel parts by means of cold heading and pressing.

The purpose of the invention is to increase the separation and anti-friction properties of the lubricant.

To prepare the lubricant used butadiene latex SBR brand-65/3 or carboxy plate butadiene latex brand SKD-1C soapstock vegetable oils trizta1nolamin, disodium salt etilendiamintetra- acetic acid (Trilon B), oleic acid, mineral oil I-12A alkali salt metals (sodium or potassium) synthetic fatty acids (SMC) fractions C, (, - C, 6 and diethanol amide fatty acids fractions C, g –C25 (DEAC).

The lubricant is prepared as follows.

The remaining components, with the exception of the latex, are added to the tank with a stirrer to the pre-dissolved in the calculated amount of water, triethanolamine and trilon B, and at 75-85 s are mixed for 1.5 2 hours. Stirring is carried out using a high-speed motor For example, AOP 21-23F type with a rotation speed of 2800 rpm.

After the formation of a homogeneous liquid, the necessary amount of latex is injected and the mixture is stirred at 50-60 ° C for 2-3 hours.

According to the described technology, lubricants were prepared, the compositions of which are given in table. one.

The test was carried out in comparison with the known lubricant (composition 16), wt.%:

Polyvinyl chloride 5.0

Emulsol ET-2. 20.0

 WaterUnder 100

For the compositions of lubricants 1-16, the value of the coefficient of friction during cold settling of ring blanks and the magnitude of the force during cold injection were determined. Data on the tool life of the tool are presented by the results of wear tests on the stand

 ules-g.

The determination of the coefficient of friction was carried out on a 1SCM-PU-200 testing machine. Samples of steel 40X with dimensions 48x24x10 mm upset

0

five

0

five

0

five

0

five

0

five

to a height of 6.5-7 mm. The coefficient of friction was determined by the monogram.

Extrusion was carried out in the manufacture of parts of the type rod with a thickening in a special stamp installed on the testing machine HMS-50. The workpiece material is steel 10, the dimensions of the workpieces are mm, mm, the relative degree of deformation is 23%.

Tests for wear were carried out on samples of steel 5ХНМ, heat-treated under the appropriate modes up to HRC 37-39. The amount of sample wear after testing was determined by a gravimetric method.

When testing all samples of corrosion is missing.

The test results are shown in Table. 2

The use of the proposed formulations reduces the cold extrusion force and the wear of the steel, which is associated with an increase in the separation properties of the lubricant. However, when the concentration of lakes is more than 5%, there is a deterioration in the technological properties of lubricants caused by unevenness of the lubricating layer. When the latex concentration is less than 2%, the proposed lubricant is ineffective.

Claims (1)

Claims. Lubricant for cold processing of metals by pressure, containing water, a polymer additive and mineral oil, characterized in that, in order to increase separation and antifriction properties, the lubricant contains a styrene or butadiene carboxylate latex as a polymer additive, and additionally, a mixture of vegetable oils, an alkali metal salt synthetic fatty acid fractions - C, g, diethanolamide fatty acids fraction C, c-C25, oleic acid, tri-ethanolamine and disodium ethylenediaminetetraacetic acid You are in the following ratio of components, May.%: Soap stock of vegetable oils 7,0-9,0 Alkali metal salt of synthetic fatty acids. С, р-С.в1.5-2.5 Diethanolamide fatty acid fraction  25 Oleic acid Triethanolamine Disodium salt etiprediamine tetraacetic acid 0.3-0.5 Mineral oil 40.0-45.0 Butadiene styrene or butadiene carboxylate latex 2,0-5,0 Water Rest 8.0 6.8 6.9 7.0 8.0 9.0 9.1 9.2 6.8 6.9 7.0 8.0 9.0 9.1 9.2 1.8 0.9 1.0 1.5 1.7 2.5 2.6, 7 0.9 1.0 1.5 1.7 2.5 2.6 2.6 2.7 1.8-: 0.9 1.0 1.5 1.7 2.5 2.6 2.7 0.9 1.0 1.5 1.7 2.5 2.6 2.7 Note. In all compositions water up to 100 wt.%. 10,085 20.08 30.07 Tab. Persons 1 0.4 0.2 0.2 0.3 0.4 0.5 0.6 0.2 0.2 0.2 0.3 0.4 0.5 0.5 0.6 0.2 0.4 0.2 0.2 0.3 0.4 0.5 0.6 0.2 0.2 0.2 0.3 0.4 0.5 0.5 0.6 0.2 42 36 38 40 42 45 46 48 36 38 40 42 45 46 48 0.8 1.0 2.0 4.0 5.0 6.0, 6.2 0.8 1.0 2.0 4.0 5.0 6.0 6.2 Table 2 leave strokes 4 5 6 7 8 9 10 11 12 13 14 15 Friction coefficient 0.07 0.06 0.06 0.06 0.06 0.08 0.07 0.07 0.06 0.06 0.06 0.06 0.06 16 (known) 0.07 Cold extrusion force, ton force steel 10 I steel 35 10.6 10.3 10.3 10.7 10.8 11.8 11.6 10.8 10.6 10.5 10.7 10.7 10.9. 12.4 12.1 12.0 14.0 14.1 15.5 15.1 12.5 12.2 12.1 14.0 14.2 14.9 Continuation of table 2 Wear ya stand ULIS-H mas.H 0.20 0.16 0.14 0.19 0.22 0.79 0.74 0.21 0.16 0.18 0.21 0.23 0.23