A kind of lubricating grease for heavy-duty automobile hub and preparation method thereof

A technology of heavy-duty automobiles and lubricating grease, which is applied in the direction of lubricating composition and petroleum industry, and can solve the problems of hub bearing lubrication failure, easy wear, and high temperature rise of bearings, etc.

Active Publication Date: 2016-08-17
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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  • A kind of lubricating grease for heavy-duty automobile hub and preparation method thereof
  • A kind of lubricating grease for heavy-duty automobile hub and preparation method thereof
  • A kind of lubricating grease for heavy-duty automobile hub and preparation method thereof

Examples

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Effect test

Embodiment 1

[0067] Preparation method of special grease for automobile wheel hub: (1) Combine 124.9kg of 12-hydroxystearic acid and 433.3kg of naphthenic mineral oil (the kinematic viscosity of the naphthenic mineral oil at 40°C 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 of lithium hydroxide monohydrate, 42kg of sebacic acid and 82.2kg of water are added to the pressure reaction vessel; (2) The reaction vessel is sealed, heated and raised, as the temperature rises, the pressure in the vessel 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℃, constant temperature for 10-30min; (4) Then release the pressure to normal pressure (note: make sure not to Run the material, the valve should not be opened too big at the beginning of the pressure relief), transfe...

Embodiment 2

[0069] The preparation method of special grease for automobile wheel hub: (1) Combine 124.9kg of 12-hydroxystearic acid and 480kg of hydrocarbon synthetic oil (the kinematic viscosity of the hydrocarbon synthetic oil is 13-18mm at 100°C). 2 / s), 41.1kg of lithium hydroxide monohydrate, 42kg of sebacic acid and 82.2kg of water were added to the pressure reaction vessel, and the reaction vessel was sealed; (2) heating and increasing, as the temperature rises, the pressure in the vessel 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, continue to heat up to 220℃, keep the temperature constant for 10-30min; (4) Then release the pressure to normal pressure (note: make sure not to run At the beginning of the pressure relief, the valve should not be opened too large), transfer to the cooling kettle, and at the same time put 120kg of ester oil (the ester oil has a kinematic viscosity of 1...

Embodiment 3

[0071] Preparation method of special lubricating grease for automobile wheels: (1) Combination of 48kg of hydroxymyristic acid and 520kg of ester-type synthetic oil / hydrocarbon-type synthetic oil (the combination of hydrocarbon-type synthetic oil / hydrocarbon-type synthetic oil has a kinematic viscosity at 100°C: 10-14mm 2 / s), 30kg of lithium hydroxide monohydrate, 42kg of dodecanedioic acid and 120kg of water are added to the pressure reaction vessel, and the reaction vessel is sealed; (2) heating and increasing, as the temperature rises, the pressure in the vessel increases at the same time; (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, at a constant temperature for 10-30 minutes; (4) Then release the pressure to normal pressure (note: ensure that the material does not run out , When the pressure is first relieved, the valve should not be opened too large), tr...

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Abstract

The invention discloses a lubricating grease for heavy-duty automobile hubs, which comprises base oil, a thickener and an additive, the thickener is a complex lithium soap thickener, and the additive includes a borate oil agent, a compound viscosity index Improver, detergent and dispersant, amine antioxidant, sulfur phosphorus antioxidant and sulfonate rust inhibitor; the lubricating grease is subjected to cyclic shearing treatment, and the special lubricating grease for automobile wheels obtained has a delicate appearance and excellent Heat resistance, adhesion, mechanical stability, water resistance, extreme pressure and anti-wear properties, etc., can meet the lubrication and protection of automobile wheel bearings under harsh conditions.

Description

Technical field [0001] The invention relates to a wheel hub grease and a preparation method thereof, in particular to a heavy-duty automobile wheel hub grease and a preparation method thereof. Background technique [0002] The role of automobile hub bearings is mainly to bear the weight of the automobile and provide precise guidance for the transmission of the hub. The wheel hub bearing is subjected to both radial load and axial load. When the car turns on an inclined surface, it is also subjected to the bending moment generated by the axial force. It is a very important safety part, and it is also a relatively vulnerable part. Statistics show that in 2007, the global production of grease reached 1.047 million tons, and about 420,000 tons of grease were used for automotive lubrication, most of which were used for wheel hub bearing lubrication. With the rapid development of the world automotive industry, the industry has lubricated automotive wheel hubs. The demand for grease is ...

Claims

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Application Information

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Patent Type & Authority Patents(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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