RU2672067C1 - Lubricant for mechanical metal-working - Google Patents

Abstract

FIELD: metal finishing industry.

SUBSTANCE: invention relates to metal-working industry, namely, a lubricant for mechanical metal-working by drilling stainless steel and other hard-to-treat metals and alloys of various thicknesses. Lubricant for mechanical metal-working, comprising stearox-6 and mineral oil, according to the invention, also includes copper stearate, triethanolamine stearate, chloroparaffin, serpentine in following ratio of components, mass %: copper stearate – 15–18, triethanolamine stearate – 5–10, stearox-6 – 10–12, chloroparaffin – 5–7, serpentine – 8–10, mineral oil – up to 100.

EFFECT: technical result of the invention is the increased resistance of drills when working hard-to-treat metals and alloys.

1 cl, 3 ex, 1 tbl

Description

The invention relates to the metalworking industry, namely to a lubricant for machining metals by drilling stainless steel and other hard-to-process metals and alloys of various thicknesses.

Known lubricant for machining metals [A.S. 1671676 USSR, MKI S10M 169/04 C10N 30/06. Grease for machining metals / V.N. Maksakovsky, V.G. Digtenko, V.T. Zemlyanko (USSR). N4753974 / 04; declared 08/09/89; publ. 08/23/91, bull. N 31. - 3 C.], which has a composition,% wt. %: sulfur 15-20, rosin 8-12, stearic acid 25-35, sodium salt of higher fatty acids 10-15, polytetrafluoroethylene 3-5, drying oil - the rest.

Lubrication does not allow for thin and deep drilling and machining of titanium alloys due to breakage of the cutting tool.

Also known lubricant for machining metals by cutting [A.S. 1664819 USSR, MKI S10M 163/00 C10N 30/06 Lubricant for the mechanical processing of metals by cutting / V.N. Maksakovsky, V.G. Digtenko, V.T. Zemlyanko (USSR). N4656939 / 04; declared 02/28/89; publ. 07/23/91, bull. N 27. - 3 C.], which has a composition, wt. %: beeswax 3-5, stearin 6-10, molybdenum disulfide 5-7, pine rosin 3-6, turpentine 8-10, phosphoric acid 4-8, aluminum powder 3-5, mineral oil - up to 100.

The lack of lubrication is the complex composition and insufficiently high resistance of drills when drilling difficult materials (stainless steels, titanium alloys), the impossibility of deep drilling (up to 100 mm deep) of thin holes (up to 3 mm) in these steels and alloys.

Closest to the claimed technical solution for the totality of features, i.e. the prototype is a lubricant for machining metals [US Pat. 2130963 Russian Federation, IPC С10М 129/02, С10М 129/02, С10М 129: 56, С10М 129: 74, C10N 40:20. Grease for machining metals / V. Melnikov; Zamyatina N.I .; Godlevsky V.A .; Molodtsov A.M .; Applicant and patent holder Ivanovo State Chemical Engineering Academy. - N 97115436/04; declared 09/17/1997; publ. 05/27/19], which has the composition: Stearox-6 in an amount of 20-30 wt. %, copper soap of fatty acids of vegetable oils in an amount of 30-35 wt. %, mineral oil - up to 100 wt. %

The disadvantages of the prototype are not high enough indicators of durability of the cutters in the processing of difficult to process metals and alloys.

The technical result of the invention is to increase the resistance of drills in the processing of difficult-to-process metals and alloys.

The specified result is achieved in that the lubricant for machining metals containing stearox-6 and mineral oil, according to the invention, contains copper stearate, triethanolamine stearate, chloroparaffin, serpentine in the following ratio of components, mass. %:

copper stearate 15-18 triethanolamine stearate 5-10 stearox-6 10-12 chloroparaffin 5-7 serpentine 8-10 mineral oil up to 100.

The following materials were used to obtain the lubricant:

Copper stearate - obtained by saponification of stearic acid with an alkaline solution and subsequent replacement of the alkali metal with copper pentahydrate.

Triethanolamine stearate - obtained by saponification of stearic acid with triethanolamine

Stearox-6 - serially produced by Kazan Production Association "Nefteorgsintez" according to GOST 8980-75.

Neonol - is also produced in series according to TU 2483-077-05766801-98 of OAO Nizhnekamskneftekhim

Chloroparaffin - serially produced by NPO Eurochem in accordance with TU 2493-211-05763458-97.

Serpentine is a natural coil chopped in a shock-reflective mill. To prepare the lubricant, a fraction with a grinding of less than 70 microns is used.

The proposed grease for machining metals is prepared as follows.

In a jacketed reactor, the mineral oil is heated to a temperature of 100-110 ° C. Then alternately with constant stirring in the heated oil add copper stearate 15-18 mass. %, triethanolamine stearate 5-10 wt. %, stearox-6 10-12 wt. %, neonol 10-15 mass. % and chloroparaffin 5-7 wt. % All components are mixed until a homogeneous paste is obtained. Then, at the stage of transition of the melt into a pasty state (during homogenization), serpentine of 8-10 masses is added. % This is necessary for uniform distribution of serpentine in the volume of the paste.

Example 1

In the heated oil make copper stearate 15 mass. %, triethanolamine stearate 5 wt. %, stearox-6 10 wt. %, neonol 10 mass. %, chloroparaffin 5 wt. % and at the stage of homogenization - serpentine 8 wt. %

Example 2

In the heated oil make copper stearate of 16 mass. %, triethanolamine stearate 7 wt. %, stearox-6 11 wt. %, neonol 11 wt. %, chloroparaffin 6 wt. % and at the stage of homogenization - serpentine 9 wt. %

Example 3

Copper stearate 17 wt. %, triethanolamine stearate 9 wt. %, stearox-6 12 wt. %, neonol 12 wt. %, chloroparaffin 7 wt. % and at the stage of homogenization - serpentine 10 wt. %

Samples of lubricants for machining metals, obtained according to examples 1-3 were tested on the basis of a modified drilling machine SN-30, which allows you to remove the friction moment when drilling workpieces, the number of holes drilled by one drill before its blunting. Test conditions: drills made of steel P6M5 of various diameters, billets made of steel X18H10T, titanium alloys VT2, VT6, etc. the lubricant according to examples 1-4 was applied to the drill with a brush once per test. The force of pressing the drill depended on its diameter and was constant during testing, the speed of rotation of the drill - 900-1500 rpm

The test results are shown in the table.

The resistance of the drill in the lubricant according to the prototype is taken as a unit. The blank was X-18H10T steel. Resistance is taken as the ratio of the number of holes drilled with the same diameter with the proposed lubricant, compared with the prototype lubricant.

Using the claimed combination of essential features allows to obtain the achieved technical result, namely: to increase the resistance of drills by 5-9.8 times and, as a result, to increase the environmental and economic efficiency of the process of metal machining.

Claims (2)

A metal machining lubricant containing stearox-6 and mineral oil, characterized in that it also contains copper stearate, triethanolamine stearate, chloroparaffin, serpentine in the following ratio of components, mass. %: copper stearate 15-18 triethanolamine stearate 5-10 stearox-6 10-12 chloroparaffin 5-7 serpentine 8-10 mineral oil up to 100