SU1162856A1 - Metal-cladding lubricant - Google Patents

Abstract

TECHNOLOGICAL LUBRICATION of COLD ROLLING OF METALS containing ethylene glycol and fatty acid esters of vegetable oil of the Cjg fraction, characterized in that, in order to increase lubricity, the lubricant additionally contains the product of treatment with triethanolamine of fatty acids of vegetable oil of fraction C, and included with 2) components, wt.%: The product of treating with triethanolamine fatty acids of vegetable oil fraction C 16- Cgo 60-75 Diethirs of ethylene glycol and fatty KO acids of vegetable oil fraction C, - C 25-40

Description

1 The invention relates to the field of rolling production, specifically to the use of process lubricants in cold rolling steel steel sheet. Known technological smazk when rolling tin Coriander and PKS-1, made from a deficient vegetable and food raw materials little-noe) FeI: tl; are important at speeds of about ole / 20 m / s: p1. The closest to the invented in terms of composition, staging and achieving the 4th effect is a cold rolling process lubricant .-. sheets and strips containing diesters of ethylene glycol and fatty acids of vegetable oil fraction C 1 - C20 2. The use of a known lubricant for rolling steel strips and sheets to crowds (0.5 mm and less does not provide the required mill performance due to insufficiently high lubricating properties. The aim of the invention is to increase the lubricating ability of technological lubricants. The specified lubricant is achieved by for cold rolling metals containing ethylene glycol diesters and vegetable oil fatty acids of the С |, - С fraction, additionally contains the product of treating fatty acids with triethanolamine; Liquor oil fraction C, - C in the following ratio of components, wt.%: Processing product with triethanolamine fatty acids of vegetable oil fractions 60-75 Ethylene glycol diesters and fatty acids of vegetable oil fraction 25-40 Fats derived from cleavage are used as fatty acids Technical cotton oil of the following composition, wt%: Palmitin 36.25 Stearinova 14.12 Oleinova 29.39 Linoleva 8.25 Linolenova 7.85 Arachinova 4.14 The melting point of these acids is 21-24 ° C. 6 2 Cotton oil ethylene glycol diesters (component 1) are prepared as follows: a mixture of 100 g of cotton oil acid is heated with stirring and 185 190 0 in the presence of 0.4 g of concentrated sulfuric acid with 15 g of ethylene glycol. The reaction is carried out until the acid number is set to not more than 10 mg KOH / g (within 7-8 hours). The product of treating with triethanolamine fatty acids of cotton oil (component 2) is obtained by heating with stirring 100 g of cotton oil acid and 18 g of trizthanololine at 160-165 ° C for 5-6 hours until the acid number is set to not more than 10 mg KOH / g. The physico-chemical properties of components 1 and 2, as well as acids of cottonseed oil and finished lubricant, are presented in table. 1. A test of the lubricity of the proposed process lubricant for rolling thin steel strips was carried out in laboratory conditions of the PMI at an quarto mill 250/55. The rolling of specimens with dimensions of 0.5 x X 30 x 500 mm from 08yu steel was performed at a speed of 3.0 m / s. Work rolls with a diameter of 55 m with a clean surface V 10 made of steel 9HF2. After rolling each batch of samples (5 for each lubricant), the rolls were washed with gasoline, acetone, then wiped with filter paper. The tested compositions of technological lubricants are given in table. 2. The lubricating ability of 3J lubricant compositions was evaluated by the lubrication efficiency coefficient K K. K where K (jj is the lubricant extraction efficiency coefficient during rolling; K p is the total pressure efficiency coefficient of lubricant. Results data for determining the lubricant E (5) composition efficiency lubricants are given in Table 3. From the data in Table 3, it can be seen that the lubricating ability of the proposed technological lubricant exceeds that known. Increasing the concentration of component 2 by more than 75% does not lead to an increase in lubricating ability, and the concentration less than 60% reduces the ability smazochnzpo;

The proposed technological is prepared by mixing the components with DO-BO with.

Example. Preparation of technological lubricant for rolling thin steel strips.

In a container with a stirrer and heating loads 40 kg of component 1 and after heating, 60 kg of component 2 are added with stirring. After stirring the mixture for 1 h, the mixture is poured into a storage tank,

Thus, the proposed technological lubricant has a high lubricity, ensuring the production of thin sheets of tin at high rolling speeds.

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The content of component 1 in the lubricant 40%

Mixed in any ratio.

Table 1 To ... Note, To p Table 2

Table 3 the ratio of the coefficients of extrusion PL during rolling with lubricant and without lubrication; the ratio of the values of the total pressure during rolling without lubrication and with lubrication.

Claims (1)

TECHNOLOGICAL GREASE FOR COLD ROLLING OF METALS containing diesters of ethylene glycol and fatty acids of the vegetable oil of the Cig - Сш fraction, characterized in that, in order to increase the lubricating ability, the lubricant additionally contains the product of the treatment of triethanolamine fatty acids of vegetable oil of the C fraction ₍₆ ~ С _go in the following ratio of components, wt.%: The treatment product of triethanolamine fatty acids of vegetable oil fraction C | ₆ - C _2o 60-75 Ethylene glycol diesters and fatty acids of vegetable oil fraction C (6 - C ₂ 0 25-40