SU1059000A1 - Lubricate for cold metal press-working - Google Patents

Abstract

LUBRICANTS FOR COLD METHODS KI METALS WITH PRESSURE, containing esters and a proton-wadding additive, characterized in that, in order to increase antifriction and extreme pressure properties, the lubricant contains esters of octyl alcohol and acids separated from waste water and has a waste of waste; production of karolaktam and adipic acid, and as a prnnoochadirnoy, additives lubricant - hilinoparafin and 1,4-c-trichloroethyl-benzene in the following ratio of components, wt.%: 1,4 - 6MS-Trichloromethylbevzol1-5 Aminoparaffi n 5-10 Esters of octyl alcohol and acids isolated from aqueous alkaline waste from the production of caprolactam and alipinic acid

Description

The invention relates to process lubricants used in cold pressure forming of metals, in particular for rolling pipes from hard steels and alloys. . .

It is known that when rolling tubes and steel OH18N10T, EI844, etc., castor oil is used in combination with a solid filler - talc and copper lubricant coating l.

The disadvantages of castor oil, in addition to the high cost and deficit of this product, include the fact that this lubricant is not always completely removed from the metal surface after deformation and during subsequent thermal and chemical treatments leads to the formation of intergranular corrosion.

The use of this lubricant leads to an increase in the surface roughness (degradation) of the surface due to the use of a sub-lubricant copper coating and solid filler.

Also known are lubricants based on glycerol esters (waste production of sebacic acid (OPSC), which provide high surface quality, complete removal of lubricant, compared to castor oil | 4j.

However, the growing need for high quality cold rolled pipes requires an increase in the productivity of the equipment, which is associated with the tightening of rolling conditions. These lubricants are not operable under conditions of elevated temperatures and high pressures.

The most conclusive, to the proposed composition and the achieved result is a lubricant for cold pressure treatment of metals, containing fluoropolyne infoparaffin as an extreme pressure agent (5-15 wt.%) And esters of sebacic acid and glycerin production (85-95 wt. %) five .

However, the extreme pressure properties of this lubricant do not provide a stable rolling process with an increase in reductions and rolling speeds. In addition, deficient glycerin is used to prepare the lubricant.

The aim of the invention is to increase the anti-friction and anti-seize properties of the lubricant.

This goal is achieved by the fact that lubricant for cold metal forming. containing extreme pressure additive and esters,. as the latter contains esters. Octyl alcohol and acids isolated from aqueous alkaline waste from the production of caprolactam and adipic acid, and as an anti-seize lubricant, amino paraffin and 1,4-bistrichlormethylbenzene in the following ratio, wt.%: 1,4-bis-Trichloromethylbenzene

1-5 Aminoparaffin 5-10 Esters of octyl alcohol and acids, isolated from aqueous alkaline waste production of caprolactam and

The rest of adipic acid The proposed lubricant base (hereinafter referred to as simple esters) is a production waste containing up to 15-17 wt.% Sodium salts of organic acids: succinic, glutaric, mainly adipic.

Esters are prepared as follows.

1000 ml of aqueous alkaline wastes are neutralized with sulfuric acid to pH 2. At the same time, the salts of organic acids are converted into the corresponding acids. The organic and aqueous layers are separated after settling. The aqueous layer is extracted with 200 ml (3 times 67 ml) of octyl alcohol to completely isolate the acids, and an octyl extract is obtained, which is mixed with the organic layer. The aqueous layer is removed, and 6 g of KU-2-8 catalyst is added to the organic 2% by weight of the reaction mass and the mixture is boiled for about 12 hours, controlling the reaction by acid number. When an acid value of approximately .4.33 mg KOH / G is reached, the heating is stopped and the reaction catalyst is hot filtered.

For the preparation of lubricants used substances manufactured according to the following state standards:

TU 6-03-7-17-78

Aminoparafin 1, 4-Bis-Trichlorme tilb e nTU 6-01-11-38-76 evils

Ion exchange resin KU-2-8 GOST 20298-74 A lubricant is prepared as follows: 1,4-Bis-Trichloromethylbenzene is mixed with a C1-minoparaffin in calculated amounts at SO-XU C until complete dissolution. Then, in the resulting esters of octyl alcohol and acids, separated from the aqueous alkaline waste from the production of caprolactam and adipic acid, a mixture of extreme pressure scriber is added in the quantity required by calculation. The resulting lubricant is a flowable mass of dark brown. According to the described technology, the following samples of lubricants were obtained (Table 1); the composition of the known lubricant sj is also given there. Physico-chemical characteristics of the proposed lubricants (given averages for compositions 1-3): Acid number, mg KOH / G1.5 Saponification number, mg KOH / G350 Essential oil, mg KOH / G384.5 Hydroxyl number, mg KOH / G 200 Viscosity at 20 ° C, cSt34.5 Flash point, C 290 Moisture present None Non-Corrosion Test Corrosion Laboratory tests of the effectiveness of the lubricant operation of the MT-2 friction machine during the drawing of X18H10T steel, and travel dimensions, 2 mm, were carried out. A measure of the effect of lubricants is the magnitude of the coefficient of friction, the drag force and the absence of sticking on the tool. After each cycle of drawing, the contact surface of the instrument is examined under the MB-1 binocular, identifying traces of sticking to the instrument. For each of the options lubricants conducted at least 10 tests. The results of lubricant tests are given in table 2. The analysis of the obtained data shows that, in contrast to the known grease, the proposed lubricant has better anti-seize properties (there is no sticking to the tool) and antifriction properties — the coefficient of friction is lower than that of the known one. Thus, the data obtained indicate that the proposed lubricant composition, which has the best anti-seize and anti-friction properties and is obtained from more affordable products, can be used with the most severe deformation modes of rolling pipes from hard steels and alloys without sublubricating copper coating. -Table 1

1,4-BIS-Trichloromethylbenzene

Aminoparaffin esters aminoparaffin fluoride

Glycerin esters OPS

1 2.5 5 5 7.5 10 94 90 85

15

85

Claims (1)

GREASE FOR COLD PROCESSING. PRESSURE METALS KIT, containing esters and extreme pressure additives, it is clear that, in order to increase antifriction and extreme pressure “properties, the lubricant contains esters of octyl alcohol and acids isolated from aqueous alkaline waste products as esters caprolactam and adipic acid, and as anti-seize additives, the lubricant is aminoparaffin and 1,4-vis-trichloromethylbenzene in the following ratio of components, wt.%: 1,4-5IS-Trichloromethylbenzene 1-5 Aminoparaffin 5-10 Esters of octyl alcohol and acids isolated from the aqueous alkaline waste product of caprolactam and adipic acid Rest I