CN104164286A - Lubricating grease composition for steering ball joint and preparation method of lubricating grease composition - Google Patents
Lubricating grease composition for steering ball joint and preparation method of lubricating grease composition Download PDFInfo
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- CN104164286A CN104164286A CN201410380385.9A CN201410380385A CN104164286A CN 104164286 A CN104164286 A CN 104164286A CN 201410380385 A CN201410380385 A CN 201410380385A CN 104164286 A CN104164286 A CN 104164286A
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Abstract
The invention discloses a lubricating grease composition for a steering ball joint and a preparation method of the lubricating grease composition. The lubricating grease composition comprises the following components in percentage by weight: 77.0%-83.0% of base oil, 7.7%-12.5% of thickening agent, 0.2%-1.5% of antioxidant, 4.0%-7.0% of extreme pressure anti-wear agent, 0.5%-2.0% of anti-rust agent and 0.5%-1.3% of tackifier. The lubricating grease composition is good in high-temperature and low-temperature performances and excellent in extreme pressure wear resistance, water resistance and rust resistance, can meet the lubricating requirements of the steering ball joint, and is especially applicable to lubricating the steel ball joints, with strict service conditions, of engineering vehicles and the like.
Description
Technical field
The invention belongs to technical field of lubricating grease, particularly relate to a kind of grease composition for steering ball joint and preparation method thereof.
Background technology
Automotive steering structure is one of important key safety part of automobile, is directly connected to steering quality, stability and the security of automobile.Between automobile steering system, steering drag link, pitman arm and knuckle arm, adopt bulb to connect.Bulb is comprised of metal ball-head pin and ball-stud socket, has dw outward, guarantees the dustproof and sealing of ball head pin.Automotive tie-rod end position carrying is larger, and ball-joint suspension combines front overhang effect and steering-effecting, existingly moves up and down, has again rotation, is not only subject to thrust but also have axial force, also may produce fine motion.
In order to prevent waving of ball-joint, the displacement of ball-joint while reducing stand under load, the gap between ball-joint and ball-and-socket will dwindle as far as possible.Ball cup is at the pressure of bulb and repeatedly under rubbing effect, if insufficient lubrication can lose efficacy gradually, causes the problem such as can not correctly turn to, turn to not in time.Therefore spherical must fall rub, wear-resisting, to guarantee the stationarity of operation and to turn to promptness.These except to guarantee bulb used and ball pin seat material firm wear-resisting, also need between metal ball-head and ball-stud socket contact surface, add the lubricating grease of special special use.If, can there is inordinate wear and metal fatigue between ball-joint in insufficient lubrication, produce looseness, steering operation is not smooth, and noise increases, thereby shortens the life-span.When serious, can cause can not correctly turn to or turn to not in time etc. the traffic safety that directly endangers automobile.Automobile steering system is positioned at automobile chassis simultaneously, Long Term Contact silt, therefore requiring with fat of this position: except having the good resistant of high or low temperature, oilness of general lubricating grease, especially should there is good water-resistant antirust, extreme pressure anti-wear and antifriction quality, to reduce friction resistance, to reduce surface abrasion, make smooth running, raise the efficiency and the life-span.
The automobile component technological development strength of domestic production motor turning ball-joint is all lower, not strict to the performance requriements of lubricating grease, mainly take universal lithium base grease as main.High-end steering ball joint with lubricating grease substantially all from external import.
Summary of the invention
The object of this invention is to provide a kind of lubricated grease composition of motor turning ball-joint and preparation method thereof that is specifically designed to.This grease composition has good high temperature performance, excellent extreme pressure and antiwear behavior and excellent water-resistant antirust.Can meet the lubricating requirement at steering ball joint position, be specially adapted to steering ball joint position lubricated of the working conditions harshnesses such as engineering truck.
Technology involved in the present invention is as follows:
Grease composition for steering ball joint is characterized in that take that lubricating grease gross weight is as a benchmark, and each component and percentage composition are:
Base oil is selected from a kind of or mixture of refined mineral oil and poly alpha olefine synthetic oil.
40 ℃ of kinematic viscosities of base oil are 130～190mm
2/ s.
Viscosifying agent selects 12-hydroxy lithium stearate calcium soap.
Described 12-hydroxy lithium stearate calcium soap is that the reactant aqueous solution by 12-oxystearic acid and equimolar lithium hydroxide and calcium hydroxide makes, and wherein the mol ratio of lithium hydroxide and calcium hydroxide is 6:1.
Oxidation inhibitor is selected from pentanoic or alkyl diphenylamine.
Extreme pressure anti-wear additives is selected from one or more mixture of sulfur-containing extreme-pressure additive, phosphorous extreme pressure agent and organic metal salt.Wherein sulfur-containing extreme-pressure additive accounts for 2%～4% of lubricating grease gross weight, is preferably olefine sulfide; Phosphorous extreme pressure agent accounts for 1%～3% of lubricating grease gross weight, is preferably sulfuric ester; Organic metal salt extreme pressure agent accounts for 1%～2% of lubricating grease gross weight, is preferably dialkyl dithiophosphate or dialkyl dithiocarbamate.
Rust-preventive agent is selected from any one combination of benzotriazole and barium mahogany sulfonate or dinonyl naphthalene sulfonate barium.
Tackifier are polyisobutene or ethylene propylene copolymer, and its molecular weight optimum is 3 * 10
4～3 * 10
6.
Preparation of greases method involved in the present invention is:
(1) 12-oxystearic acid is put in reactor and heated up with the base oil that accounts for total amount 1/2;
(2), when temperature of reaction kettle rises to 80～90 ℃, the solution of lithium hydroxide and calcium hydroxide (mol ratio of lithium hydroxide and calcium hydroxide is 6:1) is joined and in reactor, carries out saponification reaction;
(3) saponification heats up after finishing, and adds oxidation inhibitor while being warming up to 150～170 ℃;
(4) continue afterwards to heat up, while being warming up to 200～210 ℃, constant temperature 10 minutes, joins the base oil that accounts for total amount 1/4 in reactor and cools afterwards.Naturally cooling afterwards, cools to 100 ℃ and adds remaining base oil to adjust denseness when following;
(5) product denseness adds extreme pressure anti-wear additives, rust-preventive agent and tackifier after suitable, stirs, and can go out after still grinds with three-roll grinder and obtain finished product.
The sample that the formula for steering ball joint lubricating grease in employing the present invention and production technique make has good high lower performance, excellent extreme pressure and antiwear behavior and excellent water-resistant antirust.Can meet the lubricating requirement at steering ball joint position, be specially adapted to steering ball joint position lubricated of the working conditions harshnesses such as engineering truck.
Embodiment
Embodiment 1
(1), by 12-oxystearic acid 375g, (40 ℃ of kinematic viscosities are 130mm to poly alpha olefine synthetic oil 1510g
2/ s) put in reactor and heat up; (2), when reactor is warming up to 90 ℃, the aqueous solution of a hydronium(ion) oxidation lithium 41g and calcium hydroxide 25g is joined and in reactor, carries out saponification reaction; (3) saponification finishes follow-up temperature of continuing rising, while being warming up to 170 ℃, adds pentanoic 45g; (4) continue afterwards to heat up, be warming up to after 210 ℃ constant temperature 10 minutes, afterwards 400g poly alpha olefine synthetic oil is joined in reactor and cooled, carry out afterwards nature cooling, cool to 100 ℃ when following, then by 400g poly alpha olefine synthetic oil adjustment grease consistency; (5) product denseness suitable after, add successively benzotriazole 3g, dinonyl naphthalene sulfonate barium 42g, sulfide isobutene 60g, tricresol phosphate fat 30g, two (normal-butyl iso-octyl) zinc dithiophosphate 60g, sulfo-dibutyl dithiocaarbamate oxygen molybdenum 60g, polyisobutene 15g (molecular weight 3 * 10
4).After grinding with three-roll grinder after stirring, obtain finished product.Product performance index is in Table 1.
Embodiment 2
(1), by 12-oxystearic acid 231g, (40 ℃ of kinematic viscosities are 150mm to the base oil mixture 1490g of poly alpha olefine synthetic oil and refined mineral oil allotment
2/ s) put in reactor and heat up; (2), when reactor is warming up to 85 ℃, the aqueous solution of a hydronium(ion) oxidation lithium 25g and calcium hydroxide 7.5g is joined and in reactor, carries out saponification reaction; (3) saponification finishes follow-up temperature of continuing rising, while being warming up to 150 ℃, adds di-iso-octyldiphenylamine 30g; (4) continue afterwards to heat up, be warming up to after 205 ℃ constant temperature 10 minutes, 500g base oil mixture is joined in reactor and carries out cooling to material, carry out afterwards nature cooling, cool to 100 ℃ when following, then by 500g base oil mixture adjustment grease consistency; (5) product denseness suitable after, add successively benzotriazole 1.5g, dinonyl naphthalene sulfonate barium 28.5g, sulfide isobutene 60g, tricresol phosphate fat 30g, two (normal-butyl iso-octyl) zinc dithiophosphate 60g, sulfo-dibutyl dithiocaarbamate oxygen molybdenum 30g, polyisobutene 39g (molecular weight 3 * 10
6).After grinding with three-roll grinder after stirring, obtain finished product.Product performance index is in Table 1.
Embodiment 3
(1), by 12-oxystearic acid 276g, (40 ℃ of kinematic viscosities are 170mm to the base oil mixture 1530g of poly alpha olefine synthetic oil and refined mineral oil allotment
2/ s) put in reactor and heat up; (2), when reactor is warming up to 80 ℃, the aqueous solution of a hydronium(ion) oxidation lithium 30g and calcium hydroxide 9g is joined and in reactor, carries out saponification reaction; (3) saponification finishes follow-up temperature of continuing rising, while being warming up to 160 ℃, adds di-iso-octyldiphenylamine 39g; (4) continue afterwards to heat up, be warming up to after 200 ℃ constant temperature 10 minutes, 500g base oil mixture is joined in reactor and carries out cooling to material, carry out afterwards nature cooling, cool to 100 ℃ when following, then by 400g base oil mixture adjustment grease consistency; (5) product denseness suitable after, add successively benzotriazole 1.5g, barium mahogany sulfonate 58.5g, sulfide isobutene 60g, tricresol phosphate fat 45g, zinc diamyldithiocarbamate 60g,, ethylene propylene copolymer 30g (molecular weight 3 * 10
3).After grinding with three-roll grinder after stirring, obtain finished product.Product performance index is in Table 1.
Embodiment 4
(1), by 12-oxystearic acid 309g, (40 ℃ of kinematic viscosities are 190mm to the base oil mixture 1600g of poly alpha olefine synthetic oil and refined mineral oil allotment
2/ s) and put in reactor and heat up; (2), when reactor is warming up to 80 ℃, the aqueous solution of a hydronium(ion) oxidation lithium 33g and calcium hydroxide 10g is joined and in reactor, carries out saponification reaction; (3) saponification finishes follow-up temperature of continuing rising, while being warming up to 170 ℃, adds di-iso-octyldiphenylamine 45g; (4) continue afterwards to heat up, be warming up to after 200 ℃ constant temperature 10 minutes, 400g base oil mixture is joined in reactor and carries out cooling to material, carry out afterwards nature cooling, cool to 100 ℃ when following, then by 400g base oil mixture adjustment grease consistency; (5) product denseness suitable after, add successively benzotriazole 2.1g, dinonyl naphthalene sulfonate barium 42.9g, sulfide isobutene 60g, diη-propyl phosphorodithioic acid antimony 60g, sulfo-dibutyl dithiocaarbamate oxygen molybdenum 45g, ethylene propylene copolymer 30g (molecular weight 3 * 10
6).After grinding with three-roll grinder after stirring, obtain finished product.Product performance index is in Table 1.
Comparative example 1
(1), by 12-oxystearic acid 330g, (40 ℃ of kinematic viscosities are 105mm to poly alpha olefine synthetic oil 1690g
2/ s) put in reactor and heat up; (2), when reactor is warming up to 90 ℃, the aqueous solution of a hydronium(ion) oxidation lithium 48g is joined and in reactor, carries out saponification reaction; (3) saponification finishes follow-up temperature of continuing rising, while being warming up to 160 ℃, adds di-iso-octyldiphenylamine 30g; (4) continue afterwards to heat up, be warming up to after 210 ℃ constant temperature 10 minutes, 400g poly alpha olefine synthetic oil is joined in reactor and carries out cooling to material, carry out afterwards nature cooling, cool to 100 ℃ when following, then by 400g poly alpha olefine synthetic oil adjustment grease consistency; (5) product denseness suitable after, add successively dinonyl naphthalene sulfonate barium 15g, sulfuration Oleum Gossypii semen 60g, benzyl disulfide compound 60g, lead naphthenate 15g.After grinding with three-roll grinder after stirring, obtain finished product.Product performance index is in Table 1.
Comparative example 2
(1), by stearic acid 225g, (40 ℃ of kinematic viscosities are 105mm to poly alpha olefine synthetic oil 1690g
2/ s) put in reactor and heat up; (2), when reactor is warming up to 90 ℃, the aqueous solution of a hydronium(ion) oxidation lithium 34g is joined and in reactor, carries out saponification reaction; (3) saponification finishes follow-up temperature of continuing rising, while being warming up to 160 ℃, adds pentanoic 45g; (4) continue afterwards to heat up, be warming up to after 220 ℃ constant temperature 10 minutes, 500g refined mineral oil is joined in reactor and carries out cooling to material, carry out afterwards nature cooling, cool to 100 ℃ when following, then adjust grease consistency with the poly-refined mineral oil of 500g; (5) product denseness suitable after, add successively barium mahogany sulfonate 45g, benzyl disulfide compound 60g, lead naphthenate 75g.After grinding with three-roll grinder after stirring, obtain finished product.Product performance index is in Table 1.
Table 1 this patent embodiment and comparing embodiment performance comparison table
From the Data Comparison of table 1, can find out, the sample that the formula for steering ball joint lubricating grease in employing the present invention and production technique make has good high lower performance, excellent extreme pressure and antiwear behavior and excellent water-resistant antirust.Can meet the lubricating requirement at steering ball joint position, be specially adapted to steering ball joint position lubricated of the working conditions harshnesses such as engineering truck.
Claims (10)
1. for a grease composition for steering ball joint, it is characterized in that take that lubricating grease gross weight is as benchmark, each component and percentage composition are:
2. composition according to claim 1, is characterized in that base oil is a kind of or mixture of refined mineral oil or poly alpha olefine synthetic oil.
3. composition according to claim 1, is characterized in that 40 ℃ of kinematic viscosities of base oil are 130～190mm
2/ s.
4. composition according to claim 1, is characterized in that viscosifying agent is 12-hydroxy lithium stearate calcium soap.
5. composition according to claim 4, it is characterized in that described 12-hydroxy lithium stearate calcium soap is that reactant aqueous solution by 12-oxystearic acid and equimolar lithium hydroxide and calcium hydroxide makes, wherein the mol ratio of lithium hydroxide and calcium hydroxide is 6:1.
6. composition according to claim 1, is characterized in that described oxidation inhibitor is selected from pentanoic or alkyl diphenylamine.
7. composition according to claim 1, is characterized in that described extreme pressure anti-wear additives is selected from the mixture of sulfur-containing extreme-pressure additive, phosphorous extreme pressure agent and organic metal salt; Wherein sulfur-containing extreme-pressure additive accounts for 2%～4% of lubricating grease gross weight; Phosphorous extreme pressure agent accounts for 1%～3% of lubricating grease gross weight; Organic metal salt extreme pressure agent accounts for 1%～2% of lubricating grease gross weight.
8. composition according to claim 1, is characterized in that described rust-preventive agent is selected from any one combination of benzotriazole and barium mahogany sulfonate or dinonyl naphthalene sulfonate barium.
9. composition according to claim 1, is characterized in that described tackifier are polyisobutene or ethylene propylene copolymer, and its molecular weight optimum is 3 * 10
4～3 * 10
6.
10. the preparation of greases method for steering ball joint of claim 1, is characterized in that preparation of greases step is: 1) 12-oxystearic acid is put in reactor and heated up with the base oil that accounts for total amount 1/2; 2), when temperature of reaction kettle rises to 80～90 ℃, the aqueous solution of the lithium hydroxide calculating according to the amount of lipid acid and calcium hydroxide is joined and in reactor, carries out good fortune reaction; 3) saponification heats up after finishing, and adds oxidation inhibitor while being warming up to 150～170 ℃; 4) while continuing to be warming up to 200～210 ℃, constant temperature is after 10 minutes, with the base oil that accounts for total amount 1/4, cools, and cools to 100 ℃ and adds remaining base oil when following; 5) add extreme pressure anti-wear additives, rust-preventive agent and tackifier, stir, go out after still grinds with three-roll grinder and obtain finished product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380385.9A CN104164286A (en) | 2014-08-05 | 2014-08-05 | Lubricating grease composition for steering ball joint and preparation method of lubricating grease composition |
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|---|---|---|---|
| CN201410380385.9A CN104164286A (en) | 2014-08-05 | 2014-08-05 | Lubricating grease composition for steering ball joint and preparation method of lubricating grease composition |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105524687A (en) * | 2015-12-23 | 2016-04-27 | 中山大学惠州研究院 | Lithium base grease used for RV decelerators, and preparation method thereof |
| CN106497658A (en) * | 2016-10-05 | 2017-03-15 | 中国石油化工股份有限公司 | A kind of motor turning pull bar lubricant composition and preparation method |
| CN107164027A (en) * | 2017-04-25 | 2017-09-15 | 南昌铁路局科学技术研究所 | Track bolt anti-rust and lubrication oil/fat composition and preparation technology |
| CN107573988A (en) * | 2017-08-24 | 2018-01-12 | 中国石油化工股份有限公司 | A kind of automobile sway bar ball joint grease composition and preparation method |
| CN107916161A (en) * | 2017-10-19 | 2018-04-17 | 中国石油化工股份有限公司 | A kind of ceramic polishing machine drive bearing lubricating oil/fat composition |
| CN108822927A (en) * | 2018-03-30 | 2018-11-16 | 深圳市合诚润滑材料有限公司 | A kind of lubricating grease and preparation method thereof for CV joint for car |
| CN109337749A (en) * | 2018-11-23 | 2019-02-15 | 东莞市唯能润滑科技有限公司 | Lubricating grease for planetary reducer |
| CN109337746A (en) * | 2018-11-23 | 2019-02-15 | 东莞市唯能润滑科技有限公司 | A kind of planetary reducer preparation of greases method |
| CN110257145A (en) * | 2019-07-15 | 2019-09-20 | 宁波启航润滑油有限公司 | A kind of automotive gear shifter pull rod lubricating grease and its preparation method and application |
| CN110408462A (en) * | 2019-07-22 | 2019-11-05 | 纳拓润滑技术（上海）有限公司 | A kind of lubricating grease and preparation method thereof for tie rod ball |
| CN111548843A (en) * | 2020-05-09 | 2020-08-18 | 中国石油化工股份有限公司 | Commercial vehicle steering ball lubricating grease and application thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105524687B (en) * | 2015-12-23 | 2018-10-30 | 中山大学惠州研究院 | A kind of lithium base grease and preparation method thereof for RV retarders |
| CN105524687A (en) * | 2015-12-23 | 2016-04-27 | 中山大学惠州研究院 | Lithium base grease used for RV decelerators, and preparation method thereof |
| CN106497658A (en) * | 2016-10-05 | 2017-03-15 | 中国石油化工股份有限公司 | A kind of motor turning pull bar lubricant composition and preparation method |
| CN107164027B (en) * | 2017-04-25 | 2020-03-27 | 中国铁路南昌局集团有限公司科学技术研究所 | Antirust lubricating grease composition for track bolt and preparation process thereof |
| CN107164027A (en) * | 2017-04-25 | 2017-09-15 | 南昌铁路局科学技术研究所 | Track bolt anti-rust and lubrication oil/fat composition and preparation technology |
| CN107573988A (en) * | 2017-08-24 | 2018-01-12 | 中国石油化工股份有限公司 | A kind of automobile sway bar ball joint grease composition and preparation method |
| CN107916161A (en) * | 2017-10-19 | 2018-04-17 | 中国石油化工股份有限公司 | A kind of ceramic polishing machine drive bearing lubricating oil/fat composition |
| CN108822927A (en) * | 2018-03-30 | 2018-11-16 | 深圳市合诚润滑材料有限公司 | A kind of lubricating grease and preparation method thereof for CV joint for car |
| CN109337746A (en) * | 2018-11-23 | 2019-02-15 | 东莞市唯能润滑科技有限公司 | A kind of planetary reducer preparation of greases method |
| CN109337749A (en) * | 2018-11-23 | 2019-02-15 | 东莞市唯能润滑科技有限公司 | Lubricating grease for planetary reducer |
| CN109337749B (en) * | 2018-11-23 | 2022-03-11 | 东莞市唯纳孚润滑科技有限公司 | Grease for planetary reducer |
| CN110257145A (en) * | 2019-07-15 | 2019-09-20 | 宁波启航润滑油有限公司 | A kind of automotive gear shifter pull rod lubricating grease and its preparation method and application |
| CN110257145B (en) * | 2019-07-15 | 2022-02-01 | 宁波启航润滑油有限公司 | Lubricating grease for automobile gear shifter pull rod and preparation method and application thereof |
| CN110408462A (en) * | 2019-07-22 | 2019-11-05 | 纳拓润滑技术（上海）有限公司 | A kind of lubricating grease and preparation method thereof for tie rod ball |
| CN111548843A (en) * | 2020-05-09 | 2020-08-18 | 中国石油化工股份有限公司 | Commercial vehicle steering ball lubricating grease and application thereof |
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Application publication date: 20141126 |