Lubricating grease for hubs of heavy trucks and preparation method for lubricating grease

A technology for heavy-duty vehicles and lubricating grease, applied in lubricating compositions, petroleum industry, etc., can solve problems such as excessive temperature rise of bearings, large loads at both ends, failure of hub bearing lubrication, etc.

Active Publication Date: 2012-08-01
杭州得润宝油脂股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of bearing structure causes heavy loads at both ends and is easy to wear. At the same time, as the power and load capacity of transport vehicles continue to increase and the diversity of transport conditions changes, it also puts forward higher requirements for the performance of vehicle hub bearing lubricating grease. (Especially in plateau areas, due to the dangerous terrain, many slopes and sharp bends, the vehicle often encounters continuous uphill and downhill situations during driving, long-term continuous braking makes the bearing temperature rise too high, and the problem of hub bearing lubrication failure is increasingly prominent )

Method used

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  • Lubricating grease for hubs of heavy trucks and preparation method for lubricating grease
  • Lubricating grease for hubs of heavy trucks and preparation method for lubricating grease
  • Lubricating grease for hubs of heavy trucks and preparation method for lubricating grease

Examples

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Effect test

Embodiment 1

[0067] The preparation method of special lubricating grease for automobile hub: (1) 124.9kg12-hydroxystearic acid and 433.3kg naphthenic mineral oil (the 40 ℃ kinematic viscosity of described naphthenic mineral oil is 400~600mm 2 / s) and 266.7kg of paraffin-based mineral oil (the kinematic viscosity of the paraffin-based mineral oil at 40°C is 90-110mm 2 / s), 41.1kg lithium hydroxide monohydrate, 42kg sebacic acid and 82.2kg of water are added to the pressure reactor; (2) seal the reactor, heat up, and as the temperature increases, the pressure in the still increases simultaneously; (3) Set the pressure of the automatic pressure relief valve to 0.48MPa, keep the pressure in the kettle not higher than 0.48MPa and continue to heat up to 220°C, and keep the temperature constant for 10-30min; (4) Then release the pressure to normal pressure (note: it must be ensured that no Run the material, the valve should not be opened too large when the pressure is first relieved), transfer to...

Embodiment 2

[0069] The preparation method of special lubricating grease for automobile hub: (1) mix 124.9kg12-hydroxystearic acid and 480kg hydrocarbon synthetic oil (the 100 ℃ kinematic viscosity of described hydrocarbon synthetic oil is 13-18mm 2 / s), 41.1kg lithium hydroxide monohydrate, 42kg sebacic acid and 82.2kg water add pressure reactor, seal reactor; (2) heating up, along with the raising of temperature, pressure in the still rises simultaneously; ( 3) Set the pressure of the automatic pressure relief valve to 0.48MPa, keep the pressure in the kettle not higher than 0.48MPa and continue to heat up to 220°C, and keep the temperature for 10-30min; (4) Then release the pressure to normal pressure (note: make sure not to run material, the valve should not be opened too large at the beginning of pressure relief), transfer to the cooling kettle, and at the same time, 120kg of ester oil (the kinematic viscosity of the ester oil at 100°C is 15-20mm 2 / s) was added, and the jacketed cool...

Embodiment 3

[0071] The preparation method of special lubricating grease for automobile hub: (1) the combination of 48kg hydroxymyristic acid and 520kg ester type synthetic oil / hydrocarbon type synthetic oil (the combination 100 ℃ kinematic viscosity of described hydrocarbon type synthetic oil / hydrocarbon type synthetic oil is 10-14mm 2 / s), 30kg lithium hydroxide monohydrate, 42kg dodecanoic acid and 120kg water add pressure reactor, seal reactor; (2) heating up, along with the raising of temperature, pressure in the still rises simultaneously; (3 ) Set the pressure of the automatic pressure relief valve to 0.48MPa, keep the pressure in the kettle not higher than 0.48MPa and continue to heat up to 220°C, and keep the temperature constant for 10-30min; , at the beginning of pressure relief, the valve should not be opened too large), transfer to the cooling kettle, and simultaneously put 260kg of ester oil (the kinematic viscosity of the ester oil at 100°C is 17-20mm 2 / s), open the jacket ...

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Abstract

The invention discloses lubricating grease for hubs of heavy trucks. The lubricating grease consists of base oil, thickening agent and additive, the thickening agent is composite lithium soap thickener, and the additive consists of borate oiling agent, compound viscosity index improver, purification dispersant, amine-type antioxidant, sulfur-phosphorous-type antioxidant and sulfonate antirusting agent. The special lubricating grease for hubs of trucks which is obtained by means of circular shearing treatment is excellent in heat resistance, adhesion, mechanical stability, water resistance, extreme pressure abrasion resistance and the like, and can meet requirements on lubrication and protection for bearings of the hubs of the trucks under harsh conditions.

Description

technical field [0001] The invention relates to a hub lubricating grease and a preparation method thereof, in particular to a heavy-duty automobile hub lubricating grease and a preparation method thereof. Background technique [0002] The role of the automobile wheel bearing is mainly to bear the weight of the car and provide accurate guidance for the transmission of the wheel hub. Hub bearings are subjected to both radial and axial loads. When the car turns on an inclined plane, it is also subjected to the bending moment generated by the axial force. It is a very important safety component and is also a relatively vulnerable component. Statistics show that in 2007, the global production of lubricating grease reached 1.047 million tons, and about 420,000 tons of lubricating grease were used for automobile lubrication, most of which were used for hub bearing lubrication. The demand for grease is also increasing, and the quality requirements are more stringent. Therefore, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10N30/06C10N30/04C10N30/02C10N30/10C10N30/12C10N40/02C10N50/10
Inventor 白传航李元正
Owner 杭州得润宝油脂股份有限公司
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