SU721466A1 - Lubricating-cooling liquid for tooling aluminum and its alloys by cutting - Google Patents

Description

The invention relates to the technology: the use of chemicals as lubricants, in particular to lubricating and cooling liquids (coolant for metal cutting. The invention can be used in all industrial sectors in the removal of metal chips. Known coolant, representing are aqueous solutions of electrolytes, aqueous emulsions of petroleum products, as well as on the basis of water and petroleum products with the addition of functional additives pJ. Coolant coolant 2J is also known for followings of the composition, wt.%: surfactant BV1O P Hydrogen reagent 0.5 Sodium metasilicate O, 2 Water Remaining surfactant BV has the following composition, wt.%: sulfated fish oil 12.06, sulfated castor oil 5.58, sulfated fatty alcohols 5.84, bicycle oil .63.20 , oleic acid 7.45, cyclohexanol 2.72, ethyl alcohol 0.62, ammonia water 2.53, The disadvantages of the known coolant for cutting aluminum and its alloys are the low quality of processing by roughness, a significant content in the coolant of various organic substances, which significantly increases the danger of working with sanitary and fire points neither In addition, a significant content in the coolant of organic substances (especially substances that are biologically harsh from the point of view of wastewater treatment, such as mineral oils) leads to the formation of effluents that significantly pollute the environment. The aim of the invention is to increase the quality of the treated surface. The goal is achieved by the fact that AO (a cutting fluid for machining of aly fini and its water-based alloys containing

According to the invention, the surfactant surfactant, peroxide compound and sodium metasilicate contains polyoxyethylated synthetic fatty acid monoethanolamide CIQ C fraction as a surfactant and further contains urea, sodium sulfate and sodium carbonate at the following ratio. components, May. %: Polyoxyethylated monoethanolamide synthetic fatty acid fraction Cd-C 0.032-0.047 Peroxide compound O, O89-O, 13O Metasilicate sodium 0, OO5-O, O08 Sulfate sodium 0, OO5-O, OO8 Sodium carbonate 0, O37-O, 055 Urea O, 050-O, O70 Water Zb 1OO As the peroxide compound in the proposed coolant, hydrogen peroxide and its peroxyhydrates (urea monohydroxyhydrate, sodium pentoxide and one-and-a-half oxyhydrate, and others) are used.

The proposed coolant is prepared by dissolving in predetermined amounts of all non-aqueous coolant components in water. Dissolution is carried out at normal pressure and temperature. Stirring accelerates dissolution. Appreciation of coolant components in water does not matter. For the preparation of coolant, not only dry non-aqueous components can be used, but also their concentrated aqueous solutions. In the latter case, the amount of water taken to prepare the coolant should be reduced taking into account the water introduced with solutions of other components.

In tab. 1 shows the formulations of the tested compositions.,

In tab. 2 shows the comparative data on the quality of processing - the amount of roughness, which is characterized by the height of the irregularities of the treated surface (μm).

The machining is carried out on a turning screw cutter with a machine with a feed of 0,050,035 mm / ob and a cutting depth of 0.02 O, 0 5 mm.

The use of the proposed coolant compared to the known one provides the following advantages: improving the quality of roughness processing by 1O% or more; a decrease in the content of non-aqueous components in the coolant fluid by no less than 25 times, this gives a correspondingly lower cost of coolant and a decrease in wastewater generated by cutting more than 25 times; full fire safety and the best sanitary facilities of the village at work.

Table 1

Claims (1)

Note. 2, Composition Urea monoprotein is used as a peroxide compound, 1-3 and 12, 4-6 and 11 are hydrogen peroxide, .7-1O is one and a half peroxide of sodium carbonate. For comparison, the known composition (wt.%) Was used: surfactants BV 1O, hydrogen peroxide O, 5, sodium metasilicate 0.2, Aluminum AD-1 at speeds | Alloy D-16 at cutting speed, m-min, m / min Tabltsa2 Roughness, µm 721466 Invention Smaeco-cooling fluid for cutting aluminum and its water-based alloys containing surface active substance, peroxide compound and sodium metasilicate topics; that, in order to improve the quality of the surface to be treated, the liquid contains polyoxyethylated momeetheelamine synthetic fatty acid fraction C and does not contain echevin, sodium sulfate and sodium carbonate at the following ratio, wt.%: 5 10 adam nor N (p 8 Polyoxyethylated monoetinolamide synthetic fatty acid fraca l Peroxide compound 0.089-0.1 ZO Metasil cat sodium 0.005.008 Sodium sulfate 0, O05U3.008 Sodium carbonate 0.037-0.053 Urea O, O7 0 Water Up to 100 Sources of information, which are taken into account during the examination 1.Kurchik N, N., etc. Lubricating materials for metal processing peae-km, M., Himi, 1972, pp. 127-168 2, USSR USSR Certificate 348596, class C 10 M 3 / O4, 1972 type).