SU727673A1 - Lubricant for metal-working by pressure - Google Patents

Description

The invention relates to the technology of cold stamping from sheet metal, for example of tinplate, in particular to lubricants used in the process of cold metal forming and applied to a stamped metal sheet, and also used for. lubrication of working elements of die dies and punches. Lubricants can also be used for cold stamping or extraction of tin containers for packaging consumer goods, in particular special assortments of film materials, magnetic tapes, etc.

Known lubricants for cold metal forming for stamping or drawing from sheet metal parts or blanks containing mineral and vegetable oils, liquid soaps, emulsions with the addition of surfactants, etc. 11].

However, known lubricants have a number of significant disadvantages; some of them (for example, mineral oils) are difficult to remove from the surface of the finished part or workpiece, from the working elements of the dies, which entails additional operations to clean the finished parts and creates additional difficulties in the production of special tin containers. Other lubricants (for example, fish oil, 5 liquid soaps, emulsions) are ineffective in work, which leads to cases of defective sheet material. In addition, these lubricating compounds can be removed from the surface of the finished product using special lubricants or solvents such as ethyl acetate or butyl acetate. This reduces performance and impairs safety.

Known lubricant for cold metal forming, including glycerin, salts of metaphosphoric acid and organic amines - [2]. However, the specified lubricant has a rather high ’viscosity, due to which there is a lot of sticking of metal products to the dies, the lubricant does not hold well on the surface of the product (short interval of action), which requires frequent application of it on the surface. After stamping, finished products must be further processed in washing solutions. The aim of the invention is to improve the operational properties of a lubricant, in particular, to reduce its viscosity, increase the duration of the action of “•” ““ SM'Yo'ky ”* on the surface of the dies and eliminate the sticking of products on the dies.

This goal is achieved in that the lubricant based on glycerol additionally contains ethylene glycol and butyl ether of ethylene glycol (butylcelloelve), in the following ratio of components, wt.%:

Ethylene glycol

Ethylene glycol butyl ether (butyl cellosolve)

Glycerol

20-30

10 'are absent, and on the known account for 20%.

Soi Conditions Nalila- Deeply Period tav naya occupation in the sphere action elm- READY riches Wii ( BONE, wok on Coy lyche from matrices,% extraction holes, mm article, stamped before the appearance of defects)

5-15 to 100.

Ethylene glycol butyl ether fifteen 1 49.0 1,0 5.5 · '. 15,5 (butyl cellosolve) is colorless liquid with a weak 2 45.0 0,0 6.9 25.0 Hom mixes well with alcohols and water, t.kip. 172 ° C, viscosity 3 47.0 2.0 5,6 17.0 6.42 cP at 20 ° C. 20 * The proposed grease is prepared hardly 4 93.0 20, 0 5, 3 13, 0

blowing way. ''

The apparatus with a 100-liter stirrer is loaded with the components in the above ratio for each lubricant composition and mixed for 25-30 minutes. Then, the compositions are poured into separate containers and subsequently applied to the surface of the die matrices or the workpiece, known; way. .

___ According to the described technology, with ’the following 1-3 compositions of · lubricants were prepared (wt.%).

1 2 3 Ethyl gl and to l thirty 25 2 ° Ethylene glycol butyl ether 5 10 fifteen Glycerol Up to 100 Up to 100 Up to 100

The indicated compositions 1-3 in comparison with the known lubricant (4):

tested by composition

Metaphosphoric acid 25 Organic amine 25 Glycerol fifty. The tests were carried out on samples

tinplate of hot-rolled hot tinning according to GOST 177818—72, cleanliness class of the workpiece surface 1.

The test results are presented in the table.

As can be seen from the table, the operational characteristics of the proposed lubricant significantly exceed the performance of the known lubricant. The viscosity of the lubricant has decreased by 2 times, the period of action of the lubricant on the surface of the matrices of the proposed lubricant is 2.0-2.5 times • more than that of the known one. Sticking ^: 'blanks on dies almost from 25

Note. The proposed lubricant is removed from the surface with water at a temperature of 25–45 ° C in 0.5–1 min, the surface of the product meets the requirements. Known grease is not completely removed • with water at a temperature of 25-80 ° C, the use of additional, solutions or cleaning materials is required, while the surface loses its luster.

Higher performance characteristics of the proposed lubricant can significantly increase labor productivity by reducing the time that grease is removed from the finished product, increase the yield AQ of suitable products due to improved lubricating properties, increase the rhythm of the stamps and reduce rejects from breaks, and also significantly improve working conditions and safety.

The grease is removed using water, which can be heated to 45 ° C with further drying of the product. The grease does not leave tinned, tin stains, does not have aggressiveness, does not cause metal corrosion, can dramatically improve working conditions and increase productivity.

The grease can be used for cold shampooing (drawing) tinned tin containers for special types of film and photo materials.

Claims (2)

 in particular, a decrease in its viscosity, an increase in the period of action of the UWB on the surface of the stamps and the acceleration of sticking of products to the die matrix. The goal is to achieve that glycerin-based lubricant additionally contains ethylene glycol and ethylene glycol butyl ether (buty celloolv), with the following ratio of components, wt.%: Ethylene glycol 20-30 ethylene glycol butyl ether (butyl cellosolve) 5-15. Glycerol up to 100. Ethylene glycol butyl ether (butyl cellosolve) is a colorless liquid with a faint odor, mixes well with alcohols And water, t, bales. 172-C, viscosity 6/42 cP at. The proposed lubricant is prepared as follows. The apparatus with a mixer with a capacity of lOO l is loaded with composite components in the listed ratio of each composition of Lubricant and stirrer for 25-30 minutes. Then the compositions are poured into individual containers and subsequently applied to the surfaces of the dies or the workpiece in a known manner. . According to the described technology, the following 1-3 lubricant formulations are prepared (wt.%) .. Ethyl ethylene glycol Butyl ether 51015 Ethylene glycol Up to 100 Up to 100 To Glycerin The indicated compositions 1-3 were tested in comparison with the known lubricant composition (4 ): Metaphosphoric acid25 Organic amine25 Glycerin50 Testing was carried out on samples of white tin plated hotnuts of the tinned carbon dioxide according to GOST 177818-72, the purity of the surface of the workpiece 1, the test results are presented in the table. lubricants. The viscosity of the lubricant has decreased by 2 times, the duration of the lubricant on the surface of the mattress, the proposed lubricant is 2.0-2.5 times longer than that of the known lubricant; There are almost no matrices, and 20% on the known ones. Note. The proposed lubricant is removed from the surface with water with a temperature of 25-45 ° C in 0.5-1 min.hr, the surface of the products meets the requirements of the meter. Known: the lubricant is not completely removed with water with a temperature of 25-80 ° C, the use of additional , solutions or a cleaning material, while the surface loses shine. Higher performance characteristics of the proposed lubricant can significantly increase labor productivity by reducing the time to remove the lubricant from the finished product, increase the percentage of yield of the product due to improved lubricating properties, increase the rhythm of the dies and reduce 6paiKa from breaks, and also significantly improve working conditions and safety. Deletion; The lubricant is produced with the help of water, which can be aggreto up to 45 ° C with further drying. The grease does not leave on a tinned tin stain, does not possess aggressiveness, does not cause metal corrosion, allows to dramatically improve the conditions of the ore and increase productivity. Lubrication may be used for cold-pressing (stretching) containers from regular tin for special types of film photographic material. . Invention Lubricant for the treatment of metals with glycerine-based felting, about 14 h so as to reduce viscosity of the lubricant and prevent sticking of the products. $ 727673. 4 on stamps, lubricant additionally with co-sources of information, keeps ethylene glycol and butyl ether ester injected during examination Lilenglikol at the following content-1. Malov A.N. Cold technologists Research Institute of components, wt.%: Stamping. M., Metallurgists, 1969 Ethylene glycol 20-30c. 194, 242. . These 5 butyl ester 2. USSR author's certificate Lenglikol 5-15. № 279842, cl. C 10 M 7/16, 1969 Glycerin Up to 100. (prototype).