CN105385493A - Adhesiveness-good water-based nano tungsten disulfide isothermal die forging lubricant and preparation method thereof - Google Patents

Abstract

The invention discloses an adhesiveness-good water-based nano tungsten disulfide isothermal die forging lubricant, prepared from the following raw materials in parts by weight: 0.2-0.3 of carboxymethylcellulose, 7.4-7.6 of polymerized alpha olefin PAO6, 0.2-0.25 of silane coupling agent kh560, 7.6-8 of nano tungsten disulfide, 0.8-1 of nano carbon sphere, 0.8-1 of nano bentonite, 1-1.2 of Span-80, 0.4-0.5 of butyl acrylate, 0.6-0.8 of methyl acrylate, 0.1-0.2 of ammonium persulfate, 0.4-0.5 of sodium silicate, 0.7-0.8 of aluminium dihydrogen phosphate, 1.4-1.5 of molybdenum disulfide and the balance of water, wherein the total mass of the raw materials is 100. According to the lubricant, the carboxymethylcellulose, the sodium silicate, the aluminium dihydrogen phosphate and the molybdenum disulfide are used, so adhesiveness between the lubricant and an aluminium profile is increased, workpiece burning phenomena are reduced, and lubricity, suspension property and heat resistance are improved.

Description

A kind of tack good water-base nano tungsten disulfide isothermal die forging process lubricant and preparation method thereof

Technical field

The present invention relates to aluminium section bar forging lubricating fluid technical field, particularly relate to a kind of tack good water-base nano tungsten disulfide isothermal die forging process lubricant and preparation method thereof.

Background technology

Isothermal die forging process be when making mould and workpiece keep isothermal with slower forming speed to realize the method for die-forging forming, because workpiece is at high temperature out of shape with lower strain rate, deformable material can abundant recrystallize, thus the impact of work hardening can be overcome, therefore, formed machining complex structure, part that intensity is high is very suitable for.In die-forging forming process, friction can hinder metal flow, and forging and stamping load is raised, and consumes energy of deformation, causes workpiece uneven microstructure, and impression fills type and is discontented with, and reduces die life, so, must make with lubricator.At present, the lubricant type for hot closed-die forging on market is single, is mainly graphite base lubricant.Graphite has good high temperature lubrication property, but graphite is the good conductor of heat, and its heat preservation and insulation is poor, and graphite is poor at the adhesion property of metallic surface, and these all govern the application of oildag in isothermal die forging process.WS2 (tungsten disulfide) be a kind of similar in the lamellar solid lubrication material of graphite, there is excellent high temperature resistant, anti-extreme pressure energy, good to the adsorptive power of metallic surface, and thermal conductivity is lower.WS2 is applied to the lubrication of U.S. sailor space ship key position the earliest, and the author uses it in recent years and prepares high temperature extreme pressure grease, energy-saving engine oil, achieves good effect." preparation and application of water-base nano WS2 isothermal die forging process lubricant " have prepared a kind of water-base nano WS2 lubricant being suitable for isothermal die forging process, and be applied in the isothermal forging process of high strength alumin ium alloy, the water-base nano WS2 lubricant obtained is fine and close at die material surface filming, even particle distribution, during die forging, required forging force is lower, during the demoulding, required knockout press is lower, and without glutinous mould, overlap and seminess, integrated application effect is better than colloidal graphite mixed with water and oil base oildag.

But this lubricant exists poor to the bonding force of metal; easily make metallic surface exposed; easily squeeze and hinder aluminium section bar; suspension is poor; easy generation precipitation, the problems such as frictional coefficient is higher, and film forming speed is slower; also have thermotolerance, planarization, germ resistance to need to improve, and also need to improve to metallic surface protective value.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, provides a kind of tack good water-base nano tungsten disulfide isothermal die forging process lubricant and preparation method thereof.

The present invention is achieved by the following technical solutions:

A kind of tack good water-base nano tungsten disulfide isothermal die forging process lubricant, be made up of the raw material of following weight part: carboxymethyl cellulose 0.2-0.3, polyalphaolefin PAO67.4-7.6, silane coupling agent kh5600.2-0.25, nano tungsten disulfide 7.6-8, nano carbon microsphere 0.8-1, nano-bentonite 0.8-1, Span-801-1.2, butyl acrylate 0.4-0.5, methyl acrylate 0.6-0.8, ammonium persulphate 0.1-0.2, water glass 0.4-0.5, aluminium dihydrogen phosphate 0.7-0.8, molybdenumdisulphide 1.4-1.5, surplus are water, and raw material total mass is 100.

The preparation method of described tack good water-base nano tungsten disulfide isothermal die forging process lubricant, comprises the following steps:

(1) by water-soluble for silane coupling agent kh560, stir, add nano tungsten disulfide, molybdenumdisulphide, ultrasonic agitation is even, then adds nano carbon microsphere, and ultrasonic agitation is even, obtains mixture;

(2) polyalphaolefin PAO is mixed with nano-bentonite, add Span-80, stir, obtain mixture;

(3) by the mixing of materials that (1) step and (2) step obtain, stir, add butyl acrylate, methyl acrylate, be heated to 67-72 DEG C, stirring reaction 30-40 minute, then add other remaining components, continue stirring reaction 20-30 minute, to obtain final product.

Advantage of the present invention is: lubricating fluid of the present invention is by using nano-bentonite and acrylate, improve the suspension of lubricating fluid, 72 hours without caking turbidity and precipitation phenomenon, improve the adhesion property with metal, reduce hole, prevent from squeezing and hinder workpiece, by using nano carbon microsphere, reduce tungsten disulfide and metal reaction, improve lubrication persistence; By using carboxymethyl cellulose, water glass, aluminium dihydrogen phosphate, molybdenumdisulphide, improve the tack between lubricating fluid and aluminium section bar, reducing workpiece burn phenomenon, and improve oilness and, suspension and thermotolerance.

Embodiment

A kind of tack good water-base nano tungsten disulfide isothermal die forging process lubricant, be made up of the raw material of following weight part (kilogram): carboxymethyl cellulose 0.2, polyalphaolefin PAO67.4, silane coupling agent kh5600.2, nano tungsten disulfide 7.6, nano carbon microsphere 0.8, nano-bentonite 0.8, Span801, butyl acrylate 0.4, methyl acrylate 0.6, ammonium persulphate 0.1, water glass 0.4, aluminium dihydrogen phosphate 0.7, molybdenumdisulphide 1.4, surplus are water, raw material total mass is 100.

The preparation method of described tack good water-base nano tungsten disulfide isothermal die forging process lubricant, comprises the following steps:

(1) by water-soluble for silane coupling agent kh560, stir, add nano tungsten disulfide, molybdenumdisulphide, ultrasonic agitation is even, then adds nano carbon microsphere, and ultrasonic agitation is even, obtains mixture;

(2) polyalphaolefin PAO is mixed with nano-bentonite, add Span, stir, obtain mixture;

(3) by the mixing of materials that (1) step and (2) step obtain, stir, add butyl acrylate, methyl acrylate, be heated to 67 DEG C, stirring reaction 30 minutes, then add other remaining components, continue stirring reaction 20 minutes, to obtain final product.

Experimental data:

Aluminium section bar is observed after spraying, bubble-free, film forming is fine and close, even particle distribution, and without cracking, any surface finish, bonds firm, and particle is fine and close, is linked to be skin at aluminium shape surface, and aluminium section bar non-corroding, very easily clear up, can clear up with cold water;

Frictional coefficient is 0.051, under identical forge speed, uses the forging force of water-base nano WS2 lubricant lower by 1.4 × 10 than the forging force of water-based graphite, oil base graphite ⁴n, during the demoulding, required knockout press is lower, and without glutinous mould, overlap and seminess;

Suspension is tested: 24h suspension produces without phenomenons such as precipitation, piecemeal and layering boundaries after reaching 100%, 72h.

Claims (2)

1. a tack good water-base nano tungsten disulfide isothermal die forging process lubricant, it is characterized in that being made up of the raw material of following weight part: carboxymethyl cellulose 0.2-0.3, polyalphaolefin PAO67.4-7.6, silane coupling agent kh5600.2-0.25, nano tungsten disulfide 7.6-8, nano carbon microsphere 0.8-1, nano-bentonite 0.8-1, Span-801-1.2, butyl acrylate 0.4-0.5, methyl acrylate 0.6-0.8, ammonium persulphate 0.1-0.2, water glass 0.4-0.5, aluminium dihydrogen phosphate 0.7-0.8, molybdenumdisulphide 1.4-1.5, surplus are water, and raw material total mass is 100.

2. the preparation method of tack according to claim 1 good water-base nano tungsten disulfide isothermal die forging process lubricant, is characterized in that comprising the following steps:

(1) by water-soluble for silane coupling agent kh560, stir, add nano tungsten disulfide, molybdenumdisulphide, ultrasonic agitation is even, then adds nano carbon microsphere, and ultrasonic agitation is even, obtains mixture;

(2) polyalphaolefin PAO is mixed with nano-bentonite, add Span-80, stir, obtain mixture;

(3) by the mixing of materials that (1) step and (2) step obtain, stir, add butyl acrylate, methyl acrylate, be heated to 67-72 DEG C, stirring reaction 30-40 minute, then add other remaining components, continue stirring reaction 20-30 minute, to obtain final product.