DE1951281C3 - Lubricant and coolant for metal cold machining - Google Patents

Description

3. Developing lubricating and cooling fluid according to claim 1 that is simple in composition

or 2, characterized in that it is as Koni- ao and safe in operation, the pollution of

Component 3 sodium carboxymethyl cellulose prevents grinding tools from doing their work

keeps heat dissipation and the rinsing of grinding chips, -dust and decomposition products of the liquid

possible, which is the preservation of the cutting properties

25 always favored by tools.

The problem posed is achieved in that the

The present invention relates to lubricating, lubricating and cooling fluid for metal cold machining

and coolants that are used in mechanical engineering, especially for water-based grinding,

Diamond grinding of metals, in particular with the addition of calcined soda, according to the invention

Grinding and, during the exciting shaping of 30, a maximum of 1% water-soluble cellulose ester salt is

Metals are used. holds.

Currently, a number of grinding and cooling are expediently to take the named component liquids for diamond grinding of metals in the following percentage ratio:
known, e.g. B. petroleum, a mixture of petroleum and liquid oil, 3% aqueous soda solution, 35 0.05 to 0.5% water-soluble cellulose ester-1% 'ge aqueous triethanolamine solution with 0.25% ^sa ' ^z »
Borax (see e.g. the book by RN O se her 0.01 to 0.5% calcined soda and
»Production and application of lubricating and cooling 99.00 to 99.94% water,
liquids «, Gostoptechisdat, Moscow, 1963).

Petroleum has sufficiently good detergent and wetting agents- 40 Cellulose ester salts are usually used.

properties, it ensures good working conditions together with complex masses, whereby their concentration

for abrasive grains. Its application, however, is great from tration and represents about 20 percent by weight

Limited safety and occupational health and safety reasons. represents, which leads to the fact that the mass is pasty

The lubricants and coolants that have the appearance of triethanol.

arnine can, when they pass through, become metallic objects with these substances

Trischcn drive of the respective machine tool, on preprocessed, dried out and only then the

to which the metalworking takes place, the insulation is subjected to further mechanical processing,

disturb. The use of water-soluble carboxy

The methyl cellulose saizen used as a lubricating and cooling liquid makes the presence of a

3% soda solution prevents the smearing of 50 brine and thinly dispersed clay particles.

Diamond discs are not what the cutting properties do. This has a negative effect on the use of the-

decreased by tools. like man in the cold working of metals

Currently in the lubricant industry, since salt brines lead to the formation of rust,

large Umiang also cellulose esters and their deri- The lubricant and proposed according to the invention

vale used. For example, in British Patent 55, coolant does not have any of the above-mentioned problems.

1004 836 the previous application of a lubricant requires:

rnittelfilms water-soluble to a metal surface prior to its cold _L Karboxymethylzellulosesalze described in bearbe.lung. Em or more _{M of not more than λ} percent by weight should be used on / cllulosecstcr, with the coating _{based on water and a} chemical, in the dry state no more than 20% cellulose component - an alkalinity regulator, the ester, as well as well as its mixtures with polychloride - at the same time a corrosion inhibitor - to be used proppcn, polyethylene and other substances, due to _{the fact that the} component contains no concentration of organic or other solvents. _{They are connected with low costs} .

You also know the use before. Cellulose- _{In addition to technical} advantages, there are also economic

eslern bc, the cold forming of metals (USA.- 6 _S-layer f _t Liche present;
Patent 3,192,61 «>). uanei will receive an advance order from

Ingredients that contain /.ellulosccsler, on the 2nd by the amounts of additives (essentially

Metal surface before their machining and before the carboxymethyl cellulose salts) one sufficient

A 951 281 3 4

to ensure high flow rate, such as. .

to mechanically feed them through Example I.

Pumps required in the processing zone. So the can from 0.03 ° / "Na ₂ CO ₃ , 0.08 ° / ₀

the supply of the lubricant according to the invention tq ^ ojOCH COONa) 1

and cooling liquid in the processing zone and S " ^{7 2}

the machining itself at the same time without loss of time and 99.89% water loss of lubrication and cooling A previous preparation of the liquid was used when grinding chisels from Hartzu machined product, and metal with the help of diamonds pot after all washers used on metallic bond. the

ίο Tests showed that the diamond disc was in the

3. allows the composition of the selected machining of 1800 chisels not smeared,

Ingredients in the specified Mengenverhält- while in the use of 3 ° / _o solution of soda

nis to provide a medium in which the grinding wheel acts as a lubricating and cooling liquid

rust formation on metallic surfaces after 300 chisels have been machined

applied machining devices and the 15 had smeared,

processed product practically excluded- ". . . _

senist. Example 2

Consisting of 0.3% Na ₂ CO _3, 0.2 ° / ₀

-The water-soluble cellulose ester salts have an fC H O (OCH COONa) 11

iRange of properties that match the lubricant and ao 1 * 72 2 3 «

Corresponds cooling fluids as alternate ends receivable and 99.5 ° / ₀ water existing lubricating and cooling speech ^ n. Their water dispersions show good fluidity when grinding hard metal by means of film-forming ability, with these films being used on one of the diamond cup wheels. The tests have sufficient mechanical strength. An important one showed the absence of pollution. Another special feature of the water-soluble cellulose ester is the structure of its molecules, which is 0.21 mg / g compared to 0.46 mg / g when using high-lyophilicity chains of 3% soda solution. Represent the performance of the respective and therefore with good mink ability. The machine tool increased to the compound of good film-forming properties by 2.5 times on average.
good wetting ability ensures better fluidity 30 bis ο ie 1 3

and wetting the surface of tools with

Liquid, the rinsing of grinding chips and dust and the use of the lubricating and cooling liquid

Decomposition products of the liquid as well as increased with the composition similar to Example 2 the beneficial effect of the lubricating properties of the liquid during cylindrical grinding of products made of hard metal speed. 35 enabled the longitudinal feed of the

The calcined soda tangiert as a corrosion inhibitor product up to 0.7m / min., Compared to 0.5m / min, tor. At the same time it acts as a stable substance under application of 3 ° / _o sodium carbonate solution as a lubricating a stabilizing effect on the solutions of the water soluble coolant and to increase. The cross feed cellulose ester salts. increased up to 0.005 mm / stroke compared to

The lubricating and cooling fluid 40 0.0025 mm / stroke bsi d ^ r inventive use of the 3 ° solution / _o of the individual strength Sodawird by an ordinary mixing,
prepared ingredients. The specific consumption of diamonds was

It is useful as water-soluble cellulose 0.44 mg / g versus 1.77 mg / g when using the ester salt the sodium salt of carboxymethylcellulose 3% sodium carbonate solution.

45 In addition, no smearing of the grinding wheel was found.

[C ₆ H ₇ Oi (OCHgCOONa) ₃ Ie _D j _e application of the lubricant according to the invention

and cooling liquid made it possible to apply the labor intensity. did the respective machine tool and thereby

For a more detailed explanation of the invention, its performance will be increased to 2.5 times that of the specific konkreis example of the composition fish consumption of diamonds on average the lubricant and coolant as well as their test - 1.5 times and at the same time the electrical energy output cited. lower wall.

Claims (3)

I 951 281 1 2 Obtaining a dry film, according to which the metal in patent claims: brought the desired shape and then the layer is peeled off. Again, the presence becomes 1. Lubricating and cooling liquid for metal cold - a film-forming mass with no less than 20 processing, in particular by means of grinding, predominantly cellulose esters based on consisting of: organic or other solvents intended. L Water Cellulose esters are also used to a large extent 2. Calcined soda and its derivatives are used in drilling technology, and this essentially turns into a water-soluble salt 3. a maximum of 1 percent by weight of water-soluble carboxymethyl cellulose due to brine Cellulose ester salt. used the polyvalent cations along with 2. Lubricating and cooling liquid according to claim I, containing thinly dispersed clayey particles and some consisting of: additives to form a cake that 1. 99.00 to 99.94 percent by weight water, looking at the dehydration is resistant. 2. 0.01 to 0.5 percent by weight of calcined soda i ₅ The present invention aims to eliminate the disadvantages mentioned. 3. 0.05 to 0.5 percent by weight of cellulose ester - The object on which the invention is based is salt. - it says such a lubricating and cooling liquid