SU1253992A1 - Lubricant for cold-drawing of metals - Google Patents

Description

The invention relates to process lubricants for metal forming and can be used for drawing pipes from various steels and alloys.

The aim of the invention is to increase the anti-friction and anti-abrasion properties of a lubricant by increasing its adhesive properties,

For the preparation of the lubricant, the following were used: concentrate from the treatment of calcium-containing grease-containing waste obtained from the refining of oils and fats; fluorinated alcohols of the formula H (), where n 1-3 polyoxyethylated alkylphenol triethanolamine.

The concentrate used is mainly the calcium salts of fatty acids, obtained by treating with calcium chloride waste from the refining of oils and fats. This is a very viscous. Not sufficiently homogeneous --- waxy product, a mixture of calcium salts of fatty acids and neutral fat, containing up to 50% moisture.

In order to reduce the viscosity of the concentrate, it is necessary to add another 15 to 30% water. The water contained in the concentrate completely exhausts its moisture capacity and the added water is not mixed with the concentrate.

The introduction of surface-active substances (surfactants) —polyoxy-butylated acylphenols and triethanolamine — increases the moisture content of the concentrate and ensures the stability of the resulting colloidal system.

Fluorinated alcohols increase the extreme pressure, anti-friction and anti-wear properties of the lubricant.

fatty acids

Polyoxyethylamino alkylphenols:

OP-10 6 OP-7

0 5

0

Cooking lubricant produced as follows.

The concentrate was loaded into the reactor and heated with stirring to 40-50 ° C, then the surfactant was added, stirred until homogenized (3-5 minutes), then water was introduced, the temperature was increased to 60-80 ° C and continued to stir until a homogeneous paste crawled 5-10 min), then fluorinated alcohol.

The finished lubricant is a homogeneous, light yellow colored paste, easily defined on the surface of the pipes. Non-flammable lubricant. The compositions of the lubricants prepared for the tests are listed in table}.

The lubricants were tested while drawing a strip of OX18H10T steel with a degree of deformation of 20% on a laboratory unit MT-1, while the drag force, the coefficient of friction and the surface roughness after the drag were measured. The surface roughness (parameter Kd) was determined on a Calibr model 201 profilograph-profilometer.

In addition, the lubricants were tested on the MA.ST- machine, while the coefficient of friction (f) and the diameter of the spot of wear were measured (see tab.2).

 Anti-friction properties were judged by dragging forces and friction coefficients (f and f): anti-friction by the presence or absence of metal sticking to the deforming tool, anti-wear by the value of the spot wear diameter, the quality of the surface by the value of parameter R.

In addition, the dragging force can be used to judge the energy costs during processing.

12

7.4

. OP-4 Triethanolamine

Fluorine en alcohol

 .

Water

- 7.5 - - - - 1.0 1.5 3.0 1.0 1.5 0.5 1.0 1.0 A, O

0.5

30 20.5 15

1.75

2.1

22.5 15

0.25 5

40.25 10 4

For comparison, the following composition of a known lubricant was prepared (composition 9), wt%:

Calcium concentrate

salts of fatty acids 10

Washed fat

acids

45

Saponified Fat Waste

ten

300 0.024 Nalip- 0.20 0.09 0.20 neither

Continued table. one

1.75

0.25 5

2.1

22.5 15

40.25 10 4

The product of the interaction of fat-containing waste with alkanolamine5

Sodium silicate 5 Antifriction filler25

Comparative test results

are given in table 2,

512539

From the presented results, it can be seen that the lubricant offered has higher antifriction, antiwear and extreme pressure properties than is known, ensures the absence of sticking of treated material on the tool and high surface quality.

Lubricants were also tested when drawing pilot batches of pipes from 10 0X18H1OT steel and VZh 98 alloy.

Drawing was made along the route:

Compiled by T.Salamova Editor M.Kelemesh Tehred I.Popovich M.Samborska Proofreader

4686/28

Circulation 482 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

20 2 - 1.5. 2 mm

17 0.8 - 13 0.8 mm

14 "1, 2 - 1 1 1, 2 mm

The drawing on the well-known lubricant 9 (prototype) was accompanied by a breakage of the heads, sticking of the metal to the dragging line, scuffing.

When drawing on the proposed lubricant there was no sticking and tearing, the quality of the surface was improving, the drawing was stable without obryshov heads.

Claims (1)

GREASE FOR COLD METAL HANDLING, containing a concentrate from treatment with calcium chloride of fat-containing wastes obtained from components, refining of oils and fats, characterized in that, in order to increase antifriction and extreme pressure properties, the lubricant additionally contains water, polyoxyethylated alkylphenoids and triethanolamine formulas H (CE _g CE ₂ ) _and CH _g OH, where η = 1-3, with the following ratio in May,%: Concentrate from calcium chloride treatment of fat-containing wastes obtained from the refining of oils and fats Polyoxyethylated alkyl phenols Triethanolamine Fluorinated alcohols of the above formula Water »SU„ „1253992 60-75 5-10 1-3