CN103725376B - Lubricating agent for drawing steel pipe - Google Patents

Abstract

The invention discloses a lubricating agent for drawing a steel pipe. 320# type I base oil serves as base oil and is matched with multiple composite additives. The lubricating agent comprises an oiliness agent, an anti-wear agent, an extreme pressure agent, an anti-foaming agent, an antioxidant, a friction modifier and an antioxidant preservative. The lubricating agent has good lubricating performance, the strength of an oil film in a deformation area can be improved, the friction coefficient is reduced, and the strength and thickness performances of the oil film are kept stable; the lubricating agent is high in adhesion, wear resistance and viscosity-temperature performance; the lubricating agent is high in extreme pressure property and cooling property, the wear of drawing tools and drawing dies is reduced, and the lubricating agent has the characteristics that the lubricating agent has low flow shear stress, proper flashing point and ignition point and is convenient to use, and the surface smoothness and specification precision of metals are improved.

Description

A kind of lubricant of steel pipe drawing

Technical field

The invention belongs to the field of lubricant of metal drawing processing, especially steel pipe drawing.

Background technology

Drawing is one of main production process of tubing, bar, section bar and wire rod.By article section shape, drawing can be divided into: solid material drawing and the large class of hollow material drawing two.Steel pipe drawing imposes pulling force to steel tube blank, makes it by nib to obtain the plastic processing method with nib sectional dimension, goods that shape is identical.

In drawing process, except material, friction between drawing-die and steel core, on the contact surface because drawing speed improves, will occurrence temperature sharply rise.Heavy wear or sintering is there is, the effect thus requiring lubricant to play antifriction and prevent wearing and tearing, cool, lubricate in order to reduce in drawing process; Be improved drawing speed and section reduction rate simultaneously, to improve the seed output and quality of drawing process processing, prevent the generation of the defect such as surface tear, fold, bending, bias, crackle, broken end, metal press-in.

And the factor affecting steel pipe drawing has usually: steel pipe character (hardness, degree of cleaning, condition of surface); The material kind of drawing and drawing-die; The adaptability of drawing compound.Due to the difference of the mode of drawing, condition and range of product, also there is difference to the requirement of lubricant.And lubricating method generally adopt immersion, brush, roll be stained with, traction or circulation etc.Therefore, drawing compound should meet many-sided requirements such as drawing process condition, industrial safety, economy, environmental friendliness, energy-conservation, reduction of discharging.

Summary of the invention

The technical problem to be solved in the present invention is to provide one favorable lubricating property, can increase oil film strength in distorted area, reduces frictional coefficient, keeps oil film strength and thickness stable performance; Adhesivity is strong, and resistance to abrasion, viscosity temperature characteristic are good; Extreme pressure property is strong, cool, reduces the wearing and tearing of drawing device and drawing-die, has less flowing shear-stress, the lubricant of the steel pipe drawing of raising metallic surface quality.

The present invention solves the problems of the technologies described above by following technical scheme: employing is oil based on the I class base oil of No. 320, and coordinate multiple composite additive, its each component and mass percent are:

Component	Content (mass percent)
		Base oil	Surplus

Oiliness improver	6.0～8.0%
		Anti-wear agent	5.0～8.0%
Extreme pressure agent	3.0～4.0%
		Friction improver	3.0～5.0%
Antioxidant preservative	0.8～1.0%
		Oxidation inhibitor	0.5～1.0%
Kilfoam	0.005～0.01%

Base oil is the I class base oil of No. 320.

Oiliness improver industrial lard.

Anti-wear agent is clorafin 42.

Extreme pressure agent is tripotassium phosphate acid esters.

Friction improver is alkyl phosphite.

Antioxidant preservative is sulphur phosphorus fourth octyl group zinc salt;

Oxidation inhibitor is the fourth octyl diphenylamine of mass ratio 60% ~ 50% and the 2,6 ditertiary butyl p cresol compound of 40% ~ 50%.

Kilfoam is dimethyl silicone oil.

The lubricant of a kind of steel pipe drawing of the present invention, has good lubricity, can increase oil film strength in distorted area, reduces frictional coefficient, keeps oil film strength and thickness stable performance; Adhesivity is strong, and resistance to abrasion, viscosity temperature characteristic are good; Extreme pressure property is strong, cool, reduces the wearing and tearing of drawing device and drawing-die, has less flowing shear-stress, the features such as raising metallic surface smooth finish and specification precision, have suitable flash-point and point of ignition, easy to use.

Embodiment

Embodiment 1:

Following component is in harmonious proportion by mass percentage and forms:

Component	Content (mass percent)
		The I class base oil of No. 320	72.99%
Industrial lard	8.0%
		Clorafin 42	8.0%
Tripotassium phosphate acid esters	4.0%
		Alkyl phosphite	5.0%
Sulphur phosphorus fourth octyl group zinc salt	1.0%

The fourth octyl diphenylamine of mass ratio 60% and the 2,6 ditertiary butyl p cresol compound of 40%	1.0%
		Dimethyl silicone oil	0.01%

Above component summation is 100%.

Embodiment 2:

Following component is in harmonious proportion by mass percentage and forms:

Component	Content (mass percent)
		The I class base oil of No. 320	77.3425%
Industrial lard	7.0%
		Clorafin 42	6.5%
Tripotassium phosphate acid esters	3.5%
		Alkyl phosphite	4.0%
Sulphur phosphorus fourth octyl group zinc salt	0.9%
		The fourth octyl diphenylamine of mass ratio 55% and the 2,6 ditertiary butyl p cresol compound of 45%	0.75%
Dimethyl silicone oil	0.0075%

Above component summation is 100%.

Embodiment 3:

Following component is in harmonious proportion by mass percentage and forms:

Component	Content (mass percent)
		The I class base oil of No. 320	81.695%
Industrial lard	6.0%
		Clorafin 42	5.0%
Tripotassium phosphate acid esters	3.0%
		Alkyl phosphite	3.0%
Sulphur phosphorus fourth octyl group zinc salt	0.8%
		The fourth octyl diphenylamine of mass ratio 50% and the 2,6 ditertiary butyl p cresol compound of 50%	0.5%
Dimethyl silicone oil	0.005%

Above component summation is 100%.

The main physical and chemical index of embodiment 1 product is:

Project	Quality index
		Moisture, %	Vestige
40 DEG C of kinematic viscosity mm 2/s	332.5
		Flash-point (opening) DEG C,	230
Mechanical impurity, %	Nothing
		Last non seizure load (Pb), Kg	110
Pour point, DEG C,	-5
		Water soluble acid or alkali	Nothing
Corrosion test (copper sheet, 100 DEG C, 3h), level	1
		Viscosity index, is not less than	90

Claims (1)

1. a lubricant for steel pipe drawing, oil based on the I class base oil that it is characterized in that No. 320, employing, coordinate multiple composite additive, its each component and mass percent are:

Component Mass percentage content Base oil Surplus Oiliness improver 6.0～8.0％ Anti-wear agent 5.0～8.0％ Extreme pressure agent 3.0～4.0％ Friction improver 3.0～5.0％ Antioxidant preservative 0.8～1.0％ Oxidation inhibitor 0.5～1.0％ Kilfoam 0.005～0.01％

Wherein:

Oiliness improver is industrial lard;

Anti-wear agent is clorafin 42;

Extreme pressure agent is tripotassium phosphate acid esters;

Friction improver is alkyl phosphite;

Antioxidant preservative is sulphur phosphorus fourth octyl group zinc salt;

Oxidation inhibitor is the fourth octyl diphenylamine of mass ratio 60% ~ 50% and the 2,6 ditertiary butyl p cresol compound of 40% ~ 50%;

Kilfoam is dimethyl silicone oil.