SU1011677A1 - Lubricant for cold metal press-working - Google Patents

Abstract

LUBRICANT FOR THE COLD TREATMENT OF METALS WITH PRESSURE, containing 1% ethylene glycol,%: 100% per unit, 100% ethanol glycol, 4% ethylene glycol, 4% ethylene glycol, 3% ethoxyphosphate, ethoxyphosphate, ethoxyphosphate, and 100% ethanol glycol ethoxyteramidane. The residue of the synthesis of oxyethylene, characterized in that, in order to increase the extreme pressure properties, the lubricant additionally contains polyoxyethylene glycol oleic acid esters in the following ratio of components, in May.%: Polyethylene glycol with molecular weight ohm 15005-10 alkiletoksifosfatov triethanolamine salt derived from primary fatty alcohols ethoxylated fractions), 10-15 The polyethylene glycol esters of oleic kisloty1-3 bottoms synthesis of ethylene oxide Other

Description

05

The invention relates to cold metal forming, in particular to technological lubricants, and can be used in the rolling of bimetallic pipes from hard alloyed steels.

The main role of technological lubricants in the deformation of pipes is to reduce contact friction and prevent metal from sticking to the tool. The requirements for lubricants used in the deformation of hard-deformed alloy steels are particularly increasing. In order to avoid metal sticking to the instrument, sub-lubricant coatings are usually used, which greatly complicates the pipe manufacturing technology. Another important requirement for lubricants is the ability to remove it from the surface.

Lubricants are known that deform pipes without a sub-lubricant coating. Thus, a lubricant ij based on a polystyrene glycol aqueous solution is known, which contains components, wt%:

Polyethylene glycol (mol. Weight. From 600 to 6000) 12-22 Tripolyphosphate

sodium 2-6

Glycerin 0.3-4

.Antifriction layered filler4-10 Zinc oxide 1.5-5 Monoethanolamide synthetic fatty acids fraction

C, OC, BDO 100

A disadvantage of the known lubricant is that it does not possess sufficient anti-friction and anti-wear properties, which leads to the adhesion of metal to the tool. In addition, due to the presence in the lubricant of the alkali metal salt of polyphosphoric acids in solution, chemical reactions continuously proceed with the accumulation of substances harmful to the lubricant, i.e. The composition is not stable over time.

The closest in technical essence to the present invention is a lubricant 2, containing, in wt%: Polyethylene glycol of molecular weight 1500. 1-5 Polyethylene glycol molecular weight 40010-20

Triethanolamine salt of alkyl ethoxyphosphates derived from ethoxylated primary fatty alcohols fractions 0, s, (phosphoxyt-7)

10-20 VAT residue of oxide synthesis

ethylene

However, the known lubricant does not have sufficient anti-seize properties when rolling tubes from hard alloyed steels, which leads to metal sticking to the tool.

The purpose of the invention is to increase the anti-seize properties of the lubricant.

This goal is achieved by the fact that a pressure lubricant for cold metal and metal containing polyethylene glycol with a molecular weight of 1500, a triethanolamine salt of alkyl ethoxyphosphates obtained from ethoxylated primary fatty alcohols of the fraction (phosphocite-7), and a distillation residue for the synthesis of ethylene oxide, additionally contains polyoxyethyleneglycol oleic acid esters (oleox-7) with the following ratio of components, wt.%:

Polyethylene glycol with a molecular weight of 1500

5-10 10-15

Phosphoxite-7 1-3

Oleox 7

VAT residue

oxide synthesis

Rest

ethylene

Standard substances are used to prepare the lubricant;

Polyethylene glycol with a molecular weight of 1500 TU 6-14-719-7

TU 6-01-911-7

Phosphoxite-7

Oleox-7 TU 6-14-286-7

VAT residue

oxide synthesis

TU 38-3023-78

ethylene

Oleox-7 is an oleic acid polyoxyethylene glycol mixture. It is a clear yellow-brown liquid with no mechanical impurities with an omeliy number of 95-105 kg KOH / g, an iodine number of 43-48 and a hydrogen index of 8.5. - Combustible substance with a flash point in closed til -. Oleox-7 is used in the production of plastisols.

The bottoms of ethylene oxide synthesis are waste products and are yellow to brown liquid at the onset of the boiling point. They are obtained by hydration of ethylene oxide. They are a mixture of mono-, di-, tri-, tetra-, pentahexa-, ethylene glycol, and are easily mixed with water in all ratios.

Phosphr-xit-7 is a triethanolamine salt of alkyl ethoxyphosphates, which is a pasty substance. Boils at 130 C to a vspyika.

Alkyl ethoxyphosphates are products of phosphorylation of primary fatty alcohols of C-Cj t ethoxylated with 7 phosphoric anhydride of primary fatty alcohols. l mi of ethylene oxide (syntanol DT-7 /.

The phosphorus content in phosphoxite-7 5T 3.2 to 3.7 May,%.

The lubricant is prepared as follows.

In the bottoms of the synthesis of ethylene oxide, heated to bo-BO, the calculated amount of the remaining components is added in any order with thorough mixing. Then the resulting composition is maintained at this temperature for 15-30 minutes. ; The lubricant is applied to the pipes before de-formation, by dipping, dipping, or being fed to the center where the formation is in the process of drawing or rolling. / In tab. 1 shows the composition of lubricants for testing.

Table 1

The bottoms of the synthesis of ethylene oxide

Polyethylene glycol with a molecular weight of 1500

Phosphoxite-7 Oleox-7

Prolyethyleneglycol 400 molecular weight

 The proposed compositions of lubricants. Known composition (prototype).

Lubricants are tested on the MT-1 friction machine during deformation of a strip of hard deformed 12HNZA and for comparison of a strip of easily deformable carbon steel 10.

The anti-seize properties of lubricant formulations are determined by state. kgf / mm

78

84

67

7.5,

five

3 15 12,5 2

10 1

15

. the top of the strip after deformation .-, (no sticking) and anti-friction - by the value of the coefficient 1: friction, stress deformation.

In tab. 2 presents the results of testing lubricants.

- Table 2

380

0.060

Elongation 28% 4

Steel 10 + MER1

Strength2

one

39 kgf / mm3

Elongation 40% 4 As can be seen from the table. 2, the proposed lubricant (No. 1-3), in contrast to the well-known (No. 4), provides rolling of difficult-to-deformed (I) steels by improving the extreme pressure. properties (there is no sticking of the metal on the tool), and the stress on the proposed lubricant is much lower. At that time, as the well-known lubricant i (No. 4), only deformable steels (AND) ensure the deformation process. For comparison, the proposed and well-known (prototype) lubricants are tested when rolling tubes under production conditions. Rolled n 150 m bimetallic pipes, the outer layer of art. 12HNZA and internal - copper from size 60x8 to 42x5 mm. In the course of the rolling process, the rolls and mandrels are visually inspected. No metal is poured onto the tool during rolling on the proposed lubricant, and when

Continued tabl, 2

480

Sticking 310 No sticking 280 300

“- 320 rolling of bimetallic tubes on a known lubricant, sticking of the metal to the tool is observed. Y Thus, the proposed lubricant, in comparison with the known one, improves the extreme pressure properties during cold deformation - no sticking of metal to the tool is observed. The best anti-seize properties are provided by castor oil widely used in domestic pipe plants. Compared to this oil, the proposed lubricant has higher antifriction properties, so the drag on the proposed lubricant is 360 kg, for castor oil - 480 kg, the coefficient of friction of the proposed lubricant is 0.053, and castor oil - 0.080. . Thus, the proposed lubricant is a highly effective lubricant in the process of rolling bimetallic pipes from hard-to-be alloyed steels.

Claims (1)

COLD METAL PRESSURE GREASE, containing poly; ethylene glycol with a molecular weight of I 1,500, the triethanolamine salt of alkyl ethoxyphosphates obtained on the basis of the ethoxylated primary fatty alcohols of the C ₄₀ - C _4J fraction, and the bottom residue for the synthesis of ethylene oxide, characterized in that, in order to increase the extreme pressure properties, the lubricant is additionally contains polyoxyethylene glycol esters of oleic acid in the following ratio of components, May.%: Polyethylene glycol with a molecular weight of 1,500 Triethanolamine salt of alkylethoxyphosphates derived from ethoxylated primary fatty alcohols fractions with _1b -c ^ Polyoxyethylene glycol esters of oleic acid VAT residue of the synthesis of ethylene oxide 5-10 10-15 1-3 Rest