SU721469A1 - Lubricant for cold metal stamping - Google Patents

Description

This invention relates to the field of metalworking by dividing, in particular, for stamping steel sheets.

Various technological lubricants for metal processing are known, which are various mineral oils, vegetable oils with the introduction of various additives.

However, the known formulations do not satisfy the requirements for the quality of the processed top-heights and for their protective properties.

Of the known lubricants, the closest in composition to the present invention is a lubricant for cold pressure treatment of metals, which includes mineral oil, lanolin, a non-ionic wetting agent - polyoxyethylated stearic acid with 6 moles of ethylene oxide, ceresin and monoethano Lamin 2j.

However, a known lubricant has a relatively low lubricity, has low anticorrosive (concession, m) properties, with hard-

the house is removed from the surface of the molded products. upon further processing

In addition, the application of technological lubricant to the sheet at automobile plants and other machine-building enterprises is a labor-intensive operation that reduces the productivity of the dies and requires additional costs for the preparation of lubricant and its transportation to the presses.

The purpose of this invention is the development of technological lubricant with high lubricating ability, high anti-corrosion properties and good washability during further processing of stamped materials.

To achieve} P10y supplying lubrication purposes is provided consisting of h GIS eral oils, lanolin and isioiogenno- of wetter, dopolnitolo comprises gidrogeniairovannoo TOPMOVILIOTN nennoe vegetable oil and condensing the triethanolamine with Ku (hii, 1m 37 residue synthetic fatty acid (FFA) with The following ratio of components, wt.%: Lanolin10-.2O Non-ionic wetter-J feeder1-5 Hydrogenated thermo-compacted vegetable oil1O-5O Condensation product of triethanolamine C.-sulphate of synthetic fatty acids 1-S Mineral oil Up to 10 ° Hydrogenated, thermo-compacted vegetable oils (cotton, sunflower, coriander and others) are used as fat additives that increase the lubricating capacity This product is obtained as follows: Hydrogenated vegetable oil having a melting point of 25-35 ° C, ecologically 28-35 ° cSt at (8-1О cC at), iodine value 8О- 05, thermo-compacted at 22О-26О to obtain viscosity 2О-5О cСт at 1OO С and iodine number 4О-6О. The condensation product of triethanolamine with FFA is obtained by heating triethanolamine with the bottom residue of FFA (fraction C and above) to 85EZ C for 1-1.5 h with thorough stirring. Physical and chemical properties of the condensation product, Melting point: C 47-52 Viscosity at 1OO®С, cSt 35-45 Acid number, mg KOH / H 3-4 Number omn, mgKOH / g 94-96 Lanolin - purification product wool wax obtained from sheep wool by extraction with solvents or by adding soapy water. Lanolin has good lubricating and protective properties. Physico-chemical properties of wool wax Melting point, C 31-4 Saponification number, mg KOH / G 77-1 Iodine number 15-2. As a non-biogenic wetted one can use a surfactant - polyethylene glycol neck esters of apkylphenols with 7 and 10 moles of ethylene oxide (OP-7 and Ofl-10) or polyoxyethylated stearin 4 acid with 6 moles of ethylene oxide or other. The lubricant is prepared by adding the components to the mineral oil heated to 5-75 ° C with careful mixing. The composition of samples of lubricants is given in. abl 1. This & l, 2 presents data on the isico-chemical properties of the proposed samples 1-4 and 5 known lubricant. Sample 5 (lubricant known) prepared on the basis of petroleum oil, lanolin, ceresin, monoethanolamine and non-ionic wetting agent. Table 3 shows the results of determining the lubricating and technological properties of die lubricants. Comparative laboratory tests of lubricating and technological properties of lubricant samples were performed by determining the degree of stretching, stretching force and degree of thickness deformation on a laboratory stamp Sh-5j installed on a double-action press K -460B with a pH of 63, i.e., as well as Eriksen well depths on an MTL-YUG instrument, followed by degreasing of the stamped caps in degreasing solutions. In addition, the anticorrosion ability (conserved properties) of the proposed lubricant in the humidity chamber was studied in comparison with the I-2O A oil used for lubrication. The test results are given below. Time through which corrosion appeared on samples, days Oil AND-.2OA1 Offered lubricant (formed 4) 28 As can be seen from the above, a new lubricant has high lubricating, washing and anticorrosive properties. A study of oiling the sheet with the proposed lubricant was performed on a cross-cutting unit with the help of an existing oiling unit, additionally equipped with a heating system for pipelines, a collector and a pallet. In this case, 62 tons of cold-rolled sheets with a size O, 7-1.2x1OOO14OOx x4OOO mm would have been oiled Sheets oiled with the proposed lubricant were tested when stamping the following parts: front panel floor threshold, front floor casing, etc. During the tests, no additional lubricant was applied during stamping. Thus, the proposed lubrication

can be used in the sheet-stamping production in the manufacture of complex parts of the car without additional

application of technological lubricant under conditions of pressing production.

Table 1

Hydrogenated Thermal Cotton Seed Oil

The condensation product of grietanolamine with FFA fraction C and above

Lanolin

Non-ionic wetting agent (OP-7)

Industrial oil I-20A

Coating ratio2.36

Stretching force, kg67 9О

Claims (1)

Degree of deformation 0.33 Well depth. According to Ertsksen, Claims of the Invention Lubricant for cold stamping of metal containing mineral oil, lanolin and non-ionic wetting agent, characterized in that, in order to increase the lubricating properties of the lubricant and impart conservational properties to it, the lubricant additionally contains hydrogeonically Terme compacted rastitelg10 5.0 20 thirty 5.0 2.0 2 a 20 15 1.0 2.0 2.5 Up to 100 table 2 Table 3 2,352,33 2.34 68OO 687О 683 O, 330,32 0.32 nye oil and condensation product of triet nolamine with the residue of synthetic fatty acids with the following content of components, weight. %: Lanolin10-20 Non-ionic wetting agent1-5 Hydrogenated ter MO Compacted vegetable oil 7721469 8 Condensation product1. V. Belosevich and others. Emulsions triethanolamine with ku — smaoki during cold rolling. bov residue syn- Metallurgi, 1976, p. 95% fatty137 acid 1-5 Mineral oil Up to 1002 .. USSR author's certificate Sources of information, No. 36374O, CL. С 1О М 1/14, 197О taken into account in the examination (prototype).