SU1456461A1 - Lubricant-coolant for metal-working - Google Patents

Abstract

The invention relates to cutting fluids, in particular for treating metals with a diamond abrasive tool. The composition of the liquid includes, wt.%: Sodium nitrite 0.2-0.5, trizthanolamine 0.5-1.0, Nar salt of 2-hydroxy-3-methylbenzoic acid 2-3, monomethylolthiourea 0.4-0, 8, water up to 100. This liquid is provided; The cutting ability of the wheel is 2.3–3 times greater, and the wear rate is no abrasive tool 1.7–2.1 times smaller than in the known case. The grinding ratio is increased 4 times. 3 tab. § (ABOUT

Description

I

The invention relates to coolant (coolant) liquids used in the machining of metals with diamond abrasive tools.

The aim of the invention is to increase the durability of the cutting tool and the productivity of the process.

Sodium nitrite, triethanolamine, sodium salt of 2-hydroxy-3-methylbenzoic acid and monomethylolthiourea are used to prepare the coolant.

To test the coolant by simply mixing the components at 60-65 ° C, the coolant compositions shown in Table 2 were prepared. one. .

The prepared samples under the name IHP-135V were tested on a hinged semi-automatic mod. 3821 four-bar hingolovka with diamond bars АСР 100 / 80М 100%, process bushings from cast iron СЧ 12-36 with an inner diameter of 22 mm and a length of 90 mm at a circumferential speed of 10 m / min. The criteria for evaluating the coolant performance are based on the cutting ability of diamond bars pd, the wear rate of the abrasive tool Qg, and the roughness of the machined surface.

The test results are shown in Table. 2. Here, for comparison, data from tests of the known NSK-5U coolant lubricant (composition 6) are given.

As the data table. 2, when honing the iron, coolant showed results that exceeded the known water coolant NSK-5u and kerosene, taking as a base of comparison, the productivity of the process increased by 8% at approximately the same cutting tool consumption, and the machining quality and tool life improved.

Coolant IHP-135V (composition 3) tested also during grinding in comparison with the reference coolant EGT 4% concentration. The tests were carried out on an express installation made on the basis of the ZA64D machine with software circles 150 x 12 32 24A25CM27K5. Samples of steel ShH-15 HRC 61-64 section of 6x6 and a length of 25 mm are processed.

Grinding mode:

Speed of a circle, m / s 30

Load on the sample;

3

MPa

Grinding time, with Number of repetitions of experience, pieces

The test results are shown in Table. 3..

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As can be seen from the data table. 3, the coolant IHP-135 holds an unburned load of 0.30 MPa versus 0.20 MPa with the coolant EGT. The cutting ability of the wheel using an experienced coolant is 2.5-3 times greater, the wear rate of the abrasive tool is 1.7-2.1 p4- less, and the coefficient of pulping is 4 times greater than the EGT

Claims (1)

Invention Formula A metalworking cutting fluid containing water, sodium nitrite and triethanolamine, characterized in that, in order to increase tool resistance and process performance, the fluid additionally contains 2-hydroxy-3 sodium salt Metsh - benzoic acid and monomethylolthiourea in the following ratio of components, wt.%: Sodium nitrite 0.2-0.5 Triethanolamine 0.5-1, O Sodium salt of 2-hydroxy-3-methylbenzoic acid -5-3- -. Monomethylolthiourea 0.4-0.8 WaterEverything Table 1 2- very Content, wt.%, In the compositions of the coolant .- price-gete 1 2 2.5 3.0 4 0.3 0.5 0.7 0.7 1 1.5 0.15 0.2 0.35 0.5 0.6 0.3 0.4 0.6 0.8 1.0 98.25 96.9 95.85 94.7 92.9