CN100412179C - Self-repairing multi-soap based composite bearing lubricating grease and preparation method thereof - Google Patents

Abstract

The present invention relates to compound multiple-soap self-repairing bearing lubricating grease and a preparation method thereof. The lubricating grease is prepared by mixing basic liquid, a compound calcium lignosulfonate thickener, a compound calcium-litium-based thickener, an anti-oxygen anticorrosion additive, a metal deactivator, a tungsten disulfide extreme pressure additive, an anti-abrasion additive, a self-repairing additive and a structure modifier. The lubricating grease has good oxidation resistance and bearing capacity; the lubricating grease can repair the abrading section when the lubricating grease meets the requirements of extreme pressure, high temperature and abrasion resistance of roller bit bearings, and can effectively overcome the defect of insufficient silver brushed and plated on the shaft diameter surface of a bearing; the lubricating grease performs the function of repairing the anti-abrasion layers of the metal seal and the rubber seal of roller bit bearings. Thus, the service life of bearings is extended to the maximum extent, and the bearing load of bearings is improved. The present invention is particularly suitable for being used in roller bit bearings in the field of petroleum geology drilling exploration.

Description

A kind of self-repairing multi-soap based composite bearing lubricating grease and preparation method thereof

Invention field

The present invention relates to a kind of self-repairing multi-soap based composite bearing lubricating grease and preparation method thereof, particularly be used for self-repairing multi-soap based composite bearing lubricating grease of petroleum geology exploration drilling well field tooth-wheel bit and preparation method thereof.

Background of invention

Be used for subject matter that cone bit bearing lubricating grease that the petroleum geology exploration drilling well uses faces and be bearing premature wear and inefficacy that extreme pressure, heavy duty, high temperature, HI high impact concussion are caused when undertaking lubricating function.The severe environment of subterranean well can make cone bit bearing face high frictional heat, the generation of a large amount of heat of friction is easy to cause lubricating grease early failure, bit bearing can produce abrasive dust in high the pressure of the drill concussion process simultaneously, abrasive dust can not be removed the speed of meeting accelerated wear test timely at surface of friction pair, finally make the bit bearing premature failure, thereby jeopardize tooth-wheel bit work-ing life.

In the relevant patent at home and abroad, among the Chinese patent literature CN200410036957, viscosifying agent employing calcium sulphonate and polyureas are compound, wherein there is the not enough problem of colloid stability energy in polyureas, and the sulfonic acid calcium soap can not remedy this defective, therefore its oxidation susceptibility and load-carrying properties can not be guaranteed simultaneously, and owing to do not consider the reasonable compatibility problem of the solid additive and the wearing and tearing self-repair function additive of the final extreme pressure wear resisting property of decision lubricating grease, make the over-all properties of whole lubricating grease can not satisfy extreme pressure high-temperature wearable self-repair function, exist single performance and give prominence to and the insufficient problem of overall performance.In the relevant patent of the U.S. US5589443 is arranged, US5668092 relates to calcium complex soap base grease or sulfonic acid calcium soap, the same with domestic relevant patent, that adopts is or is sulfonic acid calcium soap or calcium complex soap, that does not adopt calcium sulphonate and compound calcium mixes the soap type, in the selection of additive, do not have to consider to the wear and tear additive of repairing effect of the bit cone diameter of axle and sealing-ring surface, adopt the molybdenumdisulphide solid additive as the solid extreme-pressure additive mostly, thereby lubricating grease frictional coefficient height, wear resisting property is poor, not the effect that wearing surface is repaired.

Summary of the invention

Technical problem to be solved by this invention is the deficiency that exists at above-mentioned prior art and a kind of self-repairing multi-soap based composite bearing lubricating grease and preparation method thereof is provided, this lubricating grease not only possesses good antioxidant property and supporting capacity, and the bit bearing extreme pressure can satisfied, high temperature, attrition resistantly simultaneously the abrading section is repaired, can replenish bearing shaft diametric plane brush plating silver defect of insufficient effectively, bit bearing metallic seal and rubber seal are worked the wearing layer effect of repairing, thereby prolong the work-ing life of bearing to greatest extent, improve the bearing load of bearing.

The present invention for the technical scheme that problem adopted of the above-mentioned proposition of solution is: comprise basal liquid, complex calcium sulfonate viscosifying agent, compound calcium-lithium base viscosifying agent, antioxygen rut preventives, metal passivator, tungsten disulfide extreme-pressure additive, anti-wear additive, additive of self-rehabilitation, texturing agent mixed preparing and form, each component concentration is by weight:

10～65 parts of basal liquids, 5～25 parts of complex calcium sulfonate viscosifying agents,

5～25 parts of compound calcium-lithium base viscosifying agent, 0.1～2.5 part of antioxygen rut preventives,

0.1～2.5 part of metal passivator, 1～20 part of tungsten disulfide extreme-pressure additive,

1～5 part of polarization graphite anti-wear additive, 1～10 part of additive of self-rehabilitation,

0.5～5 part of texturing agent.

Press such scheme, described basal liquid is by weight by 1～25 part of mineral oil SN6501～25 of refining system part and/or refining system mineral oil 150BS bright stock, 1～25 part of synthetic polymer poly-alpha olefins, 0～25 part of how basic alkylnaphthalene, 0～25 part of synthetic fluorinated polyether, synthetic 0～25 part of composition of many hydrocarbyl carbonates; The adding of the three kinds of components in back can further improve the over-all properties of lubricating grease; Described basal liquid final viscosity is 15～45mm ²/ s, viscosity index VI is not less than 150, and flash-point is not less than 220 ℃, and pour point is not higher than-15 ℃ mixed base oil;

Described composite sulfoacid calcium soap viscosifying agent is by weight by 1～25 part of Phenylsulfonic acid calcium, 1～25 part of lime borate, 0～25 part of calcium salicylate, 0～25 part of composition of calcium benzoate;

Described compound calcium-lithium soap viscosifying agent by calcium hydroxide, hydronium(ion) oxidation lithium respectively with acetic acid, 12-oxystearic acid compound the making that react, its component concentration comprises 1～5 part in calcium hydroxide by weight, 1～5 part of hydronium(ion) oxidation lithium, 1～25 part of acetic acid, 1～25 part of 12-oxystearic acid, in order to improve the surface ag(e)ing sclerosis problem of composite calcium-base viscosifying agent, also can add sad 0～25 part in compound calcium-lithium viscosifying agent and be replenished compound;

Described antioxygen rut preventives can be chosen one or more in phenol type, amine type or the phenol amine type anti-oxidant anti-corrosion additive;

Described metal passivator can be chosen one or more in 124 Triazole derivative, thiadiazoles derivative or the heterogeneous ring compound additive;

Described tungsten disulfide extreme-pressure additive is a micron order, 325 order percent of pass 90%;

Described polarization graphite anti-wear additive is a micron order, median size 5～15um;

Described additive of self-rehabilitation comprises the nanometer metallic silver weighting agent by weight, and (mean diameter is 50～100nm) 1～5 parts, in order to give full play to the synergy of additive of self-rehabilitation, additive of self-rehabilitation also can comprise 0～5 part of 0～5 part in hydroxyl magnesium silicate polymkeric substance or fluorocarbon polymer;

Described texturing agent contains 0.5～5 part of 0.5～5 part of glycerol and/or plumbic acetate by weight.

Preparation method's of the present invention technical scheme is:

The first step is at refining still internal modulation basal liquid, and second step was carried out the preparation of complex calcium sulfonate viscosifying agent, compound calcium-lithium base viscosifying agent, the 3rd each additive interpolation of step and homogenizing, shearing, mediation, the degassing, packing in basal liquid in the refining still.

The modulation process of described basal liquid is: add SN750 paraffin base mineral oil and/or 150BS bright stock successively according to above-mentioned metering in the refining still, mediation stirs, add poly-alpha olefins, the synthetic fluorinated polyether of adding, how basic alkylnaphthalene, synthetic many hydrocarbyl carbonates mediation stirrings as required then, its viscosity of sampling and measuring and viscosity index, qualified stand-by;

Described complex calcium sulfonate viscosifying agent, compound calcium-lithium base viscosifying agent preparation process is: the refining still in to modulating stand-by basal liquid heated and stirred, add Phenylsulfonic acid calcium successively, lime borate and calcium salicylate, calcium benzoate makes it abundant fusion, with the mixed base liquid formation homogeneous body that is in harmonious proportion well, add the calcium hydroxide powder, fully stir, time is not less than 40min, be not higher than under 40 ℃ of conditions, slowly add acetic acid, time is not less than 60min, after adding acetic acid, it is sad to add as required, time is not less than 20min, add the 12-oxystearic acid then, the time is not less than 20min, behind the reaction 20min, adding concentration is the lithium hydroxide solution that the process equivalent of 3.5～4.0mol/L calculates accurate volume, time is not less than 30min, and temperature reaction then is to 100 ℃, the reaction dehydration, to 120 ℃, survey basic soap sample mensuration free acid alkali number in the solution, the content of regulating free alkali with the 12-oxystearic acid is 0.01～0.05NAOH%, multiviscosisty then, add glycerol and/or plumbic acetate texturing agent during to 160 ℃, continue to be warming up to 200～220 ℃ of the highest refining temperatures, constant temperature 20min, go to the mediation still with pump then, simultaneously agitation cycle;

Described additive interpolation and homogenizing, shearing, mediation, the degassing, wrapping process: in the mediation still, the basic lubricating grease behind the constant temperature is stirred, circulates, heats, add the tungsten disulfide powder several times respectively, polarization graphite anti-wear additive, add antioxygen rut preventives, metal passivator behind the agitation cycle 60min, add nano metal silver paste and hydroxyl magnesium silicate or fluorocarbon polymer additive of self-rehabilitation then, last homogeneous, shearing, the degassing, to finished product packing.

The technical characterstic that the present invention has: the one, adopt double mixed type calcium soap as viscosifying agent, form the compound soap base of new mixed type by composite sulfoacid calcium soap and composite organic acid calcium soap according to certain ratio, avoid the not enough problem of performance of single soap or single compound soap; The 2nd, adopt tungsten disulfide and polarization graphite main body as the extreme pressure anti-wear additive, overcome the higher drawback of frictional coefficient that molybdenumdisulphide that present bit bearing lubricating grease generally adopts exists as the main body extreme-pressure additive; The 3rd, glycerol and plumbic acetate make the structure of lubricating grease more stable as the texturing agent of lubricating grease, and the cooperation between each composition of lubricating grease is closer; The 4th, adopt nano level metal silver powder or hydroxyl magnesium silicate salt, fluorocarbon polymer as additive of self-rehabilitation, as replenishing to bearing diameter of axle brush plating silver, the bit bearing diameter of axle and sealing-ring are had self-repair function, can effectively improve the wear resistance on bearing surface and sealing-ring surface.

Beneficial effect of the present invention is:

The oil used of oil exploration drilling with the drill bit demand side to abominable underground industrial and mineral, under the prerequisite that ensures mud circulation, the working temperature of bit bearing can be above 150 ℃, influence reduces the resistance of oxidation of lubricating grease because of the higher of temperature greatly, lubricating grease of the present invention adopts the sulfonic acid calcium salt as effectively the replenishing of viscosifying agent, and has the effective performance that good extreme pressure bearing load and natural resistance of oxidation guarantee lubricating grease thereby can make full use of calcium sulphonate.

2. the present invention adopts high refined mineral oil and synthetic polymer to carry out and is deployed into the synthesis type basal liquid, utilize the different ratio of different classes of fractionated molecule amount to solve the problem of dissolving each other that end formulation is synthesized each component in the liquid effectively, the synthetic liquid of allotment has high viscosity index, high flash-point, can take away the heat that bearing friction produces from the secondary contact surface of bearing friction effectively, reduce the temperature of bearing contact surface, the torque of reducing friction.Satisfy good lubricating property and fabulous property at high and low temperature, be particularly suitable for drilling well pyritous underground environment.

3. the present invention adopts many types of complex thickener, and a kind of is the Sulfonates soap base of basal component with the calcium sulphonate, and a kind of calcium-lithium salts with basic, normal, high molecule acid is the soap base of main component.The sulfonate soap base has that good oneself is anti-to embroider and the high-mechanic part throttle characteristics, with boric acid calcium salt, a kind of poly-extreme pressure heavy duty of calcium salicylate salt formation, antirust waterproof in the multiple-effect type viscosifying agent soap class of one.The polymer hydrochlorate adopted suitable equivalent molecule mol ratio during calcium-lithium salts was low, except the characteristic that keeps calcium soap extreme pressure high-mechanic, reduced the calcium soap problem of aging effectively.

4. the amine type, phenol type or the phenol amine type antioxygen rut preventives that adopt of the present invention has good synergistic effect with 124 Triazole derivative, thiadiazoles derivative or heterogeneous ring compound additive composition metal passivator, can effectively overcome the non-ferrous metal alloy that adopts in the modern bit bearing technology such as bit copper alloy and the anticorrosive problem that faces.

5. the present invention adopts tungsten disulfide as extreme-pressure additive, and the granularity of its 325 order percent of pass 90% satisfies wear-resisting heavily loaded needs, makes four ball sintering loads of lubricating grease be higher than 800KG, and the Timken test surpasses 80lbf.Adopt mean diameter be 5～15um intensify graphite as anti-wear additive, make the synergy performance maximum of extreme-pressure additive and anti-wear additive, wear test 620kg-900rpm-300s is lower than 1.50mm.

6. the present invention adopts the nano metal silver powder as wear-resisting supplemented by additives, can effectively reach the secondary and diameter of axle face of bearing friction, can substitute the effect of bit bearing diameter of axle brush plating silver.Hydroxyl magnesium silicate salt or fluorocarbon polymer can be repaired the wearing and tearing of bearing wear and drill bit sealing-ring effectively as the renovation agent of selfreparing bearing contact surface, repair the effective wear resisting property of enhanced leaktightness circle before wearing and tearing do not produce when wearing and tearing exist.

7. lubricating grease of the present invention has stable colloidal structure and heat resisting and pressure resisting wear resisting property, and the product cone penetration is not higher than 340mm1/10, and dropping point is not less than 300 ℃, and the extreme pressure sintering load is higher than 800kg, and the resultant wear index is greater than 160, and the anti scuffing ability is greater than 80lbf.

In a word, the present invention can replenish bearing shaft diametric plane brush plating silver defect of insufficient effectively satisfying bit bearing extreme pressure, high temperature, attrition resistant while, bit bearing metallic seal and rubber seal are worked the wearing layer effect of repairing, thereby prolong the work-ing life of bearing to greatest extent, improve the bearing load of bearing, prevent the erosion of drilling mud bit bearing.

Embodiment

The present invention is further illustrated below in conjunction with concrete case study on implementation.

Embodiment 1

Raw material by following component and content is formulated by weight:

20 parts of 150BS bright stocks, 15 parts of poly-alpha olefinss,

5 parts of synthetic fluorinated polyethers, 5 parts of synthetic many hydrocarbyl carbonates,

5 parts of Phenylsulfonic acid calcium, 2 parts of lime borates,

2 parts of calcium salicylate, 8 parts of acetic acid,

Sad 3 parts, 3 parts of 12-oxystearic acids,

3 parts in calcium hydroxide, 1 part of hydronium(ion) oxidation lithium,

0.5 part of octyl group substituted diphenylamine antioxidant addn, 0.5 part of alkyl thiadiazoles metal passivator,

15 parts of tungsten disulfide extreme-pressure additives, 5 parts of polarization graphite wear preventive additives,

4 parts of nanometer metallic silver weighting agents, 1.8 parts of glycerol,

0.2 part of plumbic acetate.

The preparation method:

In the refining still, add 20 parts of 150BS bright stocks respectively according to metering, whipped state evenly adds 15 parts of poly-alpha olefinss down, 5 parts of synthetic fluorinated polyethers, 5 parts of synthetic many hydrocarbyl carbonates are in harmonious proportion and stir, its viscosity of sampling and measuring and viscosity index, control its viscosity 15mm2/s, heated and stirred refining still to 60 ℃, add 5 parts of Phenylsulfonic acid calcium successively, 2 parts of lime borates, 2 parts of calcium salicylate, make it abundant fusion, with the mixed base liquid formation homogeneous body that is in harmonious proportion well, add 3 parts of calcium hydroxide powders, fully stir, time is not less than 40min, temperature is at 20-40 ℃, slowly add 8 parts of acetic acid, time is not less than 60min, add acetic acid, add 3 parts sad, time is not less than 20min, add 3 parts of 12-oxystearic acids then, time is not less than 20min, behind the reaction 20min, add 1 part compound concentration be the lithium hydroxide solution of the accurate measurement of 3.5～4.0mol/L, time is not less than 30min, temperature reaction then, to 100 ℃, the reaction dehydration is to 120 ℃, survey basic soap sample mensuration free acid alkali number in the solution, the content of regulating free alkali with an amount of 12-oxystearic acid is 0.01～0.05NAOH%, adds 1.8 parts of glycerol, 0.2 part plumbic acetate when continuing then to be warming up to 160 ℃, continue to be warming up to 200～220 ℃ of the highest refining temperatures, constant temperature 20min goes to the mediation still with pump then, simultaneously agitation cycle 30min, add 15 parts of tungsten disulfide powders successively, 5 parts of polarization graphite powders, add 0.5 part of octyl group substituted diphenylamine antioxidant addn behind the agitation cycle 60min, 0.5 part of alkyl thiadiazoles metal passivator, 40min is stirred in circulation, adds then with 4 parts of nano metal silver paste, the circulation homogeneous, shear, the degassing, to finished product packing.

Its 60 task cone penetration of lubricating grease by said procedure production is 305mm 1/10,315 ℃ of dropping points, and 100 ℃ of 1 A level of Cu T3, sintering load is greater than 800KG, OK value 85lbf, integrated abrasion value 155.

Embodiment 2

Raw material by following component and content is formulated by weight:

13 parts of SN750 paraffin base mineral oils, 15 parts of 150BS bright stocks,

Poly--10 parts of alhpa olefins, 5 parts of synthetic fluorinated polyethers,

5 parts of many basic alkylnaphthalenes, 5 parts of synthetic many hydrocarbyl carbonates,

6 parts of Phenylsulfonic acid calcium, 2 parts of boric acid,

2 parts of Whitfield's ointments, 5 parts of acetic acid,

Sad 2 parts, 2 parts of 12-oxystearic acids,

4 parts in calcium hydroxide, 1 part of hydronium(ion) oxidation lithium,

0.5 part of substituted diphenylamine antioxidant addn, 0.5 part of heterocycle sulfur-nitrogen compound metal passivator,

12 parts of tungsten disulfide extreme-pressure additives, 3 parts of polarization graphite wear preventive additives,

2 parts of nanometer metallic silvers, 3 parts of fluorocarbon polymers,

1.5 parts of glycerol, 0.5 part of plumbic acetate.

The preparation method:

In the refining still, add 13 parts of SN750 paraffin base mineral oils respectively according to metering, 15 parts of 150BS bright stocks, mediation stirs, add 10 parts of poly-alpha olefinss then, 5 parts of synthetic fluorinated polyethers, basic alkylnaphthalene more than 5 parts, 5 parts of synthetic many hydrocarbyl carbonates are in harmonious proportion and stir, its viscosity of sampling and measuring and viscosity index, qualified stand-by, heated and stirred refining still, add 6 parts of Phenylsulfonic acid calcium, 2 parts of boric acid and 2 parts of calcium salicylate, make it abundant fusion, with the mixed base liquid formation homogeneous body that is in harmonious proportion well, add 4 parts of calcium hydroxide powders, fully stir, time is not less than 40min, temperature is at 20-40 ℃, slowly add 5 parts of acetic acid, time is not less than 60min, add acetic acid, add 2 parts sad, time is not less than 20min, add 2 parts of 12-oxystearic acids then, time is not less than 20min, behind the reaction 20min, add 1 part of lithium hydroxide solution that conversion concentration is the accurate measurement of 3.5～4.0mol/L, the time is not less than 30min, temperature reaction then, to 100 ℃, the reaction dehydration is to 120 ℃, survey basic soap sample mensuration free acid alkali number in the solution, the content of regulating free alkali with the 12-oxystearic acid is 0.01～0.05NAOH%, and multiviscosisty then adds 1.5 parts of glycerol texturing agents during to 160 ℃, 0.5 a part plumbic acetate texturing agent continues to be warming up to 200～220 ℃ of the highest refining temperatures, constant temperature 20min goes to the mediation still with pump then, simultaneously agitation cycle 30min, add the tungsten disulfide powder successively, graphite, add 0.5 part of substituted diphenylamine antioxidant addn behind the agitation cycle 60min, 0.5 part of heterocycle sulfur-nitrogen compound metal passivator, 40min is stirred in circulation, add 2 parts of argent lotions then, 3 parts of fluorocarbon polymers, last homogeneous, shear, outgas to finished product packing.

Its 60 task cone penetration of lubricating grease by said procedure production is 315mm 1/10,325 ℃ of dropping points, and 100 ℃ of 1 A level of Cu T3, sintering load is greater than 800KG, OK value 84lbf, integrated abrasion value 153.

Raw material by following component and content is formulated by weight:

18 parts of SN750 paraffin base mineral oils, 10 parts of 150BS bright stocks,

Poly--8 parts of alhpa olefins, 6 parts of synthetic fluorinated polyethers,

4 parts of many basic alkylnaphthalenes, 6 parts of synthetic many hydrocarbyl carbonates,

1 part of Phenylsulfonic acid calcium, 5 parts of boric acid,

2 parts of Whitfield's ointments, 6 parts of acetic acid,

Sad 1 part, 3 parts of 12-oxystearic acids,

4 parts in calcium hydroxide, 1 part of hydronium(ion) oxidation lithium,

0.5 part of alkylated phenol antioxidant addn, 0.5 part of azimido-toluene metal passivator,

13 parts of tungsten disulfide extreme-pressure additives intensify 2 parts of graphite wear preventive additives,

2 parts of nanometer metallic silver selfreparing weighting agents, 2 parts of fluorocarbon polymers,

1.5 parts of glycerol, 0.5 part of plumbic acetate.

The preparation method:

In the refining still, add 18 parts of SN750 paraffin base mineral oils respectively according to metering, 10 parts of 150BS bright stocks, mediation stirs, add 8 parts of poly-alpha olefinss then, 6 parts of synthetic fluorinated polyethers, basic alkylnaphthalene more than 4 parts, 6 parts of synthetic many hydrocarbyl carbonates are in harmonious proportion and stir, its viscosity of sampling and measuring and viscosity index, qualified stand-by, heated and stirred refining still, add 1 part of Phenylsulfonic acid calcium, 5 parts of boric acid and 2 parts of calcium salicylate, make it abundant fusion, with the mixed base liquid formation homogeneous body that is in harmonious proportion well, add 4 parts of calcium hydroxide powders, fully stir, time is not less than 40min, temperature is at 15-40 ℃, slowly add 6 parts of acetic acid, time is not less than 60min, add acetic acid, add 1 part sad, time is not less than 20min, add 3 parts of 12-oxystearic acids then, the time is not less than 20min, behind the reaction 20min, add 1 part of lithium hydroxide solution that conversion concentration is the accurate measurement of 3.5～4.0mol/L, time is not less than 30min, and temperature reaction then is to 100 ℃, the reaction dehydration, to 120 ℃, survey basic soap sample mensuration free acid alkali number in the solution, the content of regulating free alkali with the 12-oxystearic acid is 0.01～0.05NAOH%, multiviscosisty then, add 1.5 parts of glycerol texturing agents during to 160 ℃, 0.5 part of plumbic acetate texturing agent continues to be warming up to 200～220 ℃ of the highest refining temperatures, constant temperature 20min, go to the mediation still with pump then, agitation cycle 30min adds 13 parts of tungsten disulfide powders successively simultaneously, 2 parts of graphite add 0.5 part of alkylated phenol antioxidant addn behind the agitation cycle 60min, 0.5 part of azimido-toluene metal passivator, 40min is stirred in circulation, adds 2 parts of argent lotions then, 2 parts of fluorocarbon polymers,, last homogeneous, shear, the degassing, to finished product.

Its 60 task cone penetration of lubricating grease by said procedure production is 319mm 1/10,322 ℃ of dropping points, and 100 ℃ of 1 A level of Cu T3, sintering load is greater than 800KG, OK value 82lbf, integrated abrasion value 151.

Claims (9)

1. self-repairing multi-soap based composite bearing lubricating grease, it is characterized in that comprising basal liquid, complex calcium sulfonate viscosifying agent, compound calcium-lithium base viscosifying agent, antioxygen rut preventives, metal passivator, tungsten disulfide extreme-pressure additive, anti-wear additive, additive of self-rehabilitation, texturing agent mixed preparing and form, each component concentration is by weight:

10～65 parts of basal liquids, 5～25 parts of complex calcium sulfonate viscosifying agents,

5～25 parts of compound calcium-lithium base viscosifying agent, 0.1～2.5 part of antioxygen rut preventives,

0.1～2.5 part of metal passivator, 1～20 part of tungsten disulfide extreme-pressure additive,

1～5 part of polarization graphite anti-wear additive, 1～10 part of additive of self-rehabilitation,

0.5～5 part of texturing agent;

Described basal liquid final viscosity is 15～45mm ²/ s, viscosity index VI is not less than 150, and flash-point is not less than 220 ℃, and pour point is not higher than-15 ℃.

2. by the described self-repairing multi-soap based composite bearing lubricating grease of claim 1, it is characterized in that described basal liquid is by weight by 1～25 part of mineral oil SN6501～25 of refining system part and/or refining system mineral oil 150BS bright stock, 1～25 part of synthetic polymer poly-alpha olefins, 0～25 part of how basic alkylnaphthalene, 0～25 part of synthetic fluorinated polyether, synthetic 0～25 part of composition of many hydrocarbyl carbonates.

3. by claim 1 or 2 described self-repairing multi-soap based composite bearing lubricating greases, it is characterized in that described composite sulfoacid calcium soap viscosifying agent is by weight by 1～25 part of Phenylsulfonic acid calcium, 1～25 part of lime borate, 0～25 part of calcium salicylate, 0～25 part of composition of calcium benzoate.

4. by claim 1 or 2 described self-repairing multi-soap based composite bearing lubricating greases, it is characterized in that described compound calcium-lithium soap viscosifying agent by calcium hydroxide, lithium hydroxide respectively with acetic acid, 12-oxystearic acid compound the making that react, its component concentration comprises 1～5 part in calcium hydroxide by weight, 1～5 part of hydronium(ion) oxidation lithium, 1～25 part of acetic acid, 1～25 part of 12-oxystearic acid adds sad 0～25 part.

5. by claim 1 or 2 described self-repairing multi-soap based composite bearing lubricating greases, it is characterized in that described antioxygen rut preventives chooses one or more in phenol type, amine type or the phenol amine type anti-oxidant anti-corrosion additive; Described metal passivator is chosen one or more in 124 Triazole derivative, thiadiazoles derivative or the heterogeneous ring compound additive.

6. by claim 1 or 2 described self-repairing multi-soap based composite bearing lubricating greases, it is characterized in that described tungsten disulfide extreme-pressure additive is a micron order, 325 order percent of pass 90%, described polarization graphite anti-wear additive is a micron order, median size 5～15um.

7. by claim 1 or 2 described self-repairing multi-soap based composite bearing lubricating greases, it is characterized in that described additive of self-rehabilitation comprises 1～5 part of nanometer metallic silver weighting agent by weight, also comprises 0～5 part of 0～5 part in hydroxyl magnesium silicate polymkeric substance or fluorocarbon polymer.

8. by claim 1 or 2 described self-repairing multi-soap based composite bearing lubricating greases, it is characterized in that described texturing agent contains 0.5～5 part of 0.5～5 part of glycerol and/or plumbic acetate by weight.

9. preparation method by the described self-repairing multi-soap based composite bearing lubricating grease of claim 1, it is characterized in that the first step is at refining still internal modulation basal liquid, second step was carried out the preparation of complex calcium sulfonate viscosifying agent, compound calcium-lithium base viscosifying agent, the 3rd each additive interpolation of step and homogenizing, shearing, mediation, the degassing, packing in basal liquid in the refining still;

The modulation process of basal liquid is: add SN750 paraffin base mineral oil, 150BS bright stock successively according to above-mentioned metering in the refining still, mediation stirs, add poly-alpha olefins, the synthetic fluorinated polyether of adding, how basic alkylnaphthalene, synthetic many hydrocarbyl carbonates mediation stirrings as required then, its viscosity of sampling and measuring and viscosity index, qualified stand-by;

Described complex calcium sulfonate viscosifying agent, compound calcium-lithium base viscosifying agent preparation process is: the refining still in to modulating stand-by basal liquid heated and stirred, add Phenylsulfonic acid calcium successively, lime borate and calcium salicylate, calcium benzoate makes it abundant fusion, with the mixed base liquid formation homogeneous body that is in harmonious proportion well, add the calcium hydroxide powder, fully stir, time is not less than 40min, be not higher than under 40 ℃ of conditions, slowly add acetic acid, time is not less than 60min, after adding acetic acid, it is sad to add as required, time is not less than 20min, add the 12-oxystearic acid then, the time is not less than 20min, behind the reaction 20min, adding concentration is the lithium hydroxide solution that the process equivalent of 3.5～4.0mol/L calculates accurate volume, time is not less than 30min, and temperature reaction then is to 100 ℃, the reaction dehydration, to 120 ℃, survey basic soap sample mensuration free acid alkali number in the solution, the content of regulating free alkali with the 12-oxystearic acid is 0.01～0.05NAOH%, multiviscosisty then, add glycerol and/or plumbic acetate texturing agent during to 160 ℃, continue to be warming up to 200～220 ℃ of the highest refining temperatures, constant temperature 20min, go to the mediation still with pump then, simultaneously agitation cycle;

Described additive interpolation and homogenizing, shearing, mediation, the degassing, wrapping process: in the mediation still, the basic lubricating grease behind the constant temperature is stirred, circulates, heats, add the tungsten disulfide powder several times respectively, polarization graphite anti-wear additive, add antioxygen rut preventives, metal passivator behind the agitation cycle 60min, add nano metal silver paste and hydroxyl magnesium silicate or fluorocarbon polymer additive of self-rehabilitation then, last homogeneous, shearing, the degassing, to finished product packing.