SU1766954A1 - Lubricant-coolant liquid for cold mechanical metal working - Google Patents

Description

one

(21) 4383428/04 (22) 01.01.88 (46) 07.10.92. Bul №37

(71) Basic-indicative fishing collective farm named. S.M.Kirova and Lviv Polytechnic Institute named after Lenin Komsomol

(72) O.I.Pokotilo, A.I. Soshko, V.A.Slet and A.A.Uukkivi

(56) USSR author's certificate Me 1100299, cl. C 10 M 173/02, 1983.

USSR author's certificate Ns 1151571, class C 10 M 173/00, 1985. (54) LUBRICANT-COOLING LIQUID FOR MECHANICAL TREATMENT OF METALS

(57) Summary of the invention: the liquid contains triethanolamine 0.02-0.4%; sodium nitrite 0.1-0.3%; triethanolamine and sodium double salt with acylamidoethylsulfonate u, V; „M & siut№tf J &

Acid acid, derived from the waste of fish cannery production, 0.02-1.0%; VAT residue of the rectification of the product obtained after sequential esterification and transesterification of fatty acids with waste oil of fish canning production by methanol, 0.1-0.8%; VAT residue distillation of methanol, selected upon receipt of the specified double salt, 1-3,4%; nonionic surfactant 0.01-0.4%; sodium tri-polyphosphate 0.1-0.8%; biocidal additive selected from the group consisting of copper nitrate, copper sulfate, copper formate, condensation product of formaldehyde with the vat residue of monoethanolamine rectification, isolated during the preparation of monoethanolamides of fatty acids from waste products of fish-canning production, 0.01-0.8%; water the rest. 2 tab.

(L

WITH

The invention relates to lubricating coolant (coolant) fluids, in particular to semi-synthetic aqueous fluids for mechanical processing of metals.

The purpose of the invention is to improve the lubricating and anti-corrosion properties of the fluid, as well as the durability of the machining tool.

For the preparation of coolant, triethanolamine TU 6-02-916-79, sodium nitrite GOST 19906-74, sodium tripolyphosphate GOST 13493-77 are used, it is advisable to use polyoxyethylated higher fatty alcohols as a non-ionic surfactant, for example

DS-7, DS-10 sintanol according to TU 6-14-577-77, OS-20, OS-2 preparations according to GOST 10730-82, copper sulfate, copper nitrate, GOST 4165-78 copper formate.

To obtain the coolant, various products of the processing of fish waste canned fats were also used.

The feedstock for the production of these products are fats from frying fish in vegetable oils, as well as washing water from cleaning equipment and workshops containing fish and vegetable fats that have been exposed to high rates of A (

ABOUT

Yu

12-17

Ratur and impurities in cooking.

Fish production canned fat (ORM) wastes are separated from wastewater by pressure flotation, followed by separation of the product. Characterization of ORJ: External Oily Oil, dark yellow or brown liquid with a characteristic fishy smell

Density, g / cm30,911 - 0,917

Pour point, ° C Acid number,

mg KOH / g3-110

The number of saponis,

mg KOH / g - 181-192

ORM is subjected to sequential esterification and transesterification with methanol at 67-70 ° C in the presence of sulfuric acid followed by rectification of the (vacuum) transesterification product with separation of the vat residue / which is used as a bleed from coolant coolant (hereinafter, this product is named vat residue rectification of the transesterification product of the ORM)

Below are the characteristics of the specified VAT residue and its approximate composition

Density, g / cm3 0.90 - 0.95 pH5-9

Temperature

boiling, ° C230 (at 12 mm Hg)

Temperature

flashes, ° C 60-100 Temperature

self-ignition, ° C 390 Methyl esters of ORJ, may% 50-80 Oligomeric compounds of acidic character (mol 1000-4000), may% 20-50 To prepare the coolant, use double salt of triethanolamine and sodium acylamidosulfuric acid, obtained on the basis of RSM (hereinafter the specified double salt is designated DTN)

DTN is obtained as follows. The fraction 190-210 ° C isolated during the vacuum distillation of the product of transesterification is treated with monoethanolamine at 70-80 ° C in the presence of sodium 2-amino-ethoxylate, obtained

five

0

0

50

five

0

0

five

five

ORM monoethanolamides are treated at 60-70 ° C with maleic anhydride followed by treatment of the acylamidoethyl maleate with a solution of triethanolamine sulfite and sodium at 60-70 ° C.

Below are the structural formula DTN and its characteristics.

R-C - NHC2H OOC-CH-CH2-

oh so3Na

-COO + NH (C2H4OH) 3

where R is alkyl C13-C21 with a number of double bonds of 0-4.

Characteristics of a 30% solution of DTN

Appearance Transparent thickish yellow liquid

Density, g / cm31,09-1,10

pH4.5-5.5

Cloud point, ° C2-10 Foaming

Ross-H0 185-205 Miles capacity with a concentration of Hi-172-180 active ve-Hs 163-176

substances of 0.25% and a temperature of 40 ° C, mm Content of active substance,% 30 ± 1.5

For the preparation of the coolant was also used the bottom residue of distillation of methanol, isolated during the production of DTN (hereinafter, this product is referred to as the residue of distillation of methanol).

Excess amount of methanol at the stage of esterification and transesterification, as well as selected methanol at the stage of synthesis of ORZ monoethanolamides and diethanolamides, ORJ is subjected to regeneration by distillation. The resulting pure methanol is returned to the process, and the distillation residue of its rectification is used as a component of the coolant

/

Below are the characteristics and approximate composition of the bottom residue of methanol distillation

Appearance Waxy

substance at elevated temperature thickish brown liquid.

Density, g / cm31.01-1.04

Melting point, ° С39-41 Boiling point, ° С66-70

Composition of bottom residue, wt%: Fish oil, vegetable fats35-50 Glycerol 30-45 Salts (sodium chloride, sodium sulfate, monoethanolamine hydrochloride) 3-5

Water13-17

In addition to the listed products, the product of condensation of formaldehyde GOST 1625-54 with the distillation residue of monoethanolamine isolated during the preparation of ORM monoethanolamides (hereinafter referred to as condensation product of formaldehyde with the distillation residue of monoethanolamine) is also used as a biocidal additive of the proposed coolant.

At the stage of synthesis of monoethanol amides, an excess of monoethanolamine is regenerated by distillation in a vacuum, and the residue is taken away, which is used for condensation with formaldehyde.

Below are the characteristics and approximate composition of the bottom residue of the rectification of monoethanolamine.

Appearance Thick brown liquid with odor of monoethanolamine Density, g / cm3 1.04-1.14 pH2-3

Temperature

boiling, ° С85 (at 12 mm of mercury)

Composition, wt.%; Monoethanol amine64-69 Diethanolamine 25-29 Oligomeric compounds mol. 500-2000 4-6 Before preparing the working composition of the proposed coolant, first concentrate is prepared. The method of preparation depends on the type of biocidal additive used,

Example 1. As a biocidal additive using a salt of copper selected from the group including nitrate, sulfate, formate. The preparation of the proposed coolant is carried out as follows:

1) non-inogenic surfactant is dissolved in the residual distillation of the product of the ester re-esterification at 60-80 ° C and continuous stirring, the Solution is cooled to 50-60 ° C and triethenolamine is added with stirring;

2) sodium tripolyphosphate and sodium nitrite are dissolved in the VAT residue of methanol distillation at 35-55 ° C and under stirring;

3) the copper salt is cold and, with stirring, dissolved in an aqueous solution of DTN until a viscous, homogeneous complex is formed;

4) all intermediate fractions are mixed at 40-60 ° C until a homogeneous dark green concentrate is formed.

Example 2. As a biocidal additive using the condensation product 0 of formaldehyde with the bottom residue of the rectification of monoethanolamine. The process of making the coolant is the following:

1) the non-ionic surfactant is dissolved in the bottoms of the distillation of the product of the re-esterification of the ORM at 60-80 ° C with continuous stirring. The solution is cooled to 50-60 ° C and triethanolamine is added, cooled to 40 ° C and the condensation product of formaldehyde with a cubic monoethanolamine distillation residue is added;

2) an aqueous solution of DTN, sodium tripolyphosphate and nitrite are added to the bottom residue of methanol rectification at 35-55 ° C.

5 sodium and mix until dissolved;

3) both intermediate fractions are mixed at 35-40 ° C to form a uniform light brown concentrate.

0 The working concentration of the proposed coolant is obtained by dissolving the concentrate in the required amount of water.

In the manner described, the compositions of the coolant are presented, presented in Table. 1. 5 Test 1-12 The composition of the coolant was carried out in comparison with the known coolant (composition 13), having the following composition, wt.%: Triethanolamine1,0

Copper sulphate

0 Potassium oleic acid soap1.0 Non-ionic

Surfactant (OP-7) 0.01

Sodium nitrite 0.2

5WaterUp to 100

Comparative tests of coolant were performed when drilling alloyed steel 40HNZA (HB 230) with drills from R6M5 high-speed steel with a diameter of 9.2 mm. Processing mode 0: speed 340 rpm, feed 0.2 mm / rev.

Lubricating properties (critical load Pk and welding load Pc) were determined on a four-ball friction machine 5 according to GOST 9490-5.

Corrosion tests were carried out by the method of polarization resistance and the corrosion rate of cast iron of grade 18-36 (GOST 1412-70) was evaluated in the volume of coolant. The test results are shown in Table. 2

From the data it follows that the known coolant (composition 13) does not provide sufficient durability of the processing tool, has a low lubricity (low values of Рк and Рс) and insufficient anticorrosive properties (high corrosion rate).

- The proposed coolant compositions (2-11) provide an increase in tool durability by a factor of 2 and a decrease in the corrosion rate by 1.5–2 times.

Claims (1)

Claims A lubricating fluid for machining metals containing water, triethanolamine, sodium nitrite, a non-ionic surfactant, a biocidal additive selected from the group consisting of copper nitrate and copper sulfate, in order to increase the lubricants, anti-corrosion properties of the fluid and tool life, the fluid additionally contains sodium tripolyphosphate, a double salt of triethanolamine and sodium acylamidoethylsulfonate. acids derived from waste fish from fish canning production, VAT residue from the product obtained after successive esterification and transesterification of fat from fish products from fat production with methanol, VAT residue from methanol recovered from the specified double salt, and the group of which is biocidal the additive additionally includes copper formate and the condensation product of formaldehyde with the residue from the distillation of monoethanolamine isolated at AI monoethanolamides of fatty acids, waste fish products of canned production, in the following ratio of components, jnac.%: Triethanolamine 0.02-0.4 Sodium nitrite 0.1-0.3 Double salt of triethanolamine and sodium acylamidoethylsulfonic acid, obtained on the basis of waste fish from fish canning VAT residue of the rectification of the product obtained after the sequential esterification and transesterification of fatty acids with methanol is a waste of fish canning production VAT residue of methanol distilled during the preparation of the specified double salt. Nonionic surfactant. Fat Fish Canning Production Water table 2