阅读说明：本技术 一种车辆轮毂轴承用耐高低温抗磨锂基润滑油脂 (High-low temperature resistant wear-resistant lithium-based lubricating grease for vehicle hub bearing ) 是由 程艳青 于 2018-08-02 设计创作，主要内容包括：本发明公开了一种车辆轮毂轴承用耐高低温抗磨锂基润滑油脂,原料重量百分比：基础油75%～90%、二氧化钛5～10%、二硫化钨5～10%、疏水性硅土5～10%、二烷基二硫代磷酸氧钼0.5～1%、二烷基二硫代磷酸锌0.5～1%、聚异丁烯丁二酰亚胺0.5～1%、磷酸酯0.5～1%、聚甲基丙烯酸酯0.5～1%、非硅型抗泡剂0.05～0.1%,包括研磨筛选、搅拌、冷却包装步骤,二烷基二硫代磷酸氧钼,增加润滑油的抗磨性,添加抗腐蚀添加剂,提高润滑油的抗腐蚀性,增加润滑油的使用寿命,二氧化钛、二硫化钨、疏水性硅土均为纳米级,提高润滑油的耐热性和润滑度,聚异丁烯丁二酰亚胺有效抑制轮毂轴承上积灰,提高润滑剂的实用性。(The invention discloses high and low temperature resistant and wear resistant lithium-based lubricating grease for a vehicle hub bearing, which comprises the following raw materials in percentage by weight: 75-90% of base oil, 5-10% of titanium dioxide, 5-10% of tungsten disulfide, 5-10% of hydrophobic silica, 0.5-1% of dialkyl molybdenum dithiophosphate, 0.5-1% of dialkyl zinc dithiophosphate, 0.5-1% of polyisobutylene succinimide, 0.5-1% of phosphate ester, 0.5-1% of polymethacrylate and 0.05-0.1% of non-silicon type anti-foaming agent.)

1. The utility model provides a vehicle wheel hub bearing is with resistant high low temperature lithium base lubricating grease that wear-resistants which characterized in that: the weight percentage of the raw materials is as follows: 75-90% of base oil, 5-10% of titanium dioxide, 5-10% of tungsten disulfide, 5-10% of hydrophobic silica, 0.5-1% of molybdenum dialkyl dithiophosphate, 0.5-1% of zinc dialkyl dithiophosphate, 0.5-1% of polyisobutylene succinimide, 0.5-1% of phosphate, 0.5-1% of polymethacrylate and 0.05-0.1% of non-silicon type anti-foaming agent, and the method comprises the following steps:

grinding and screening: mixing titanium dioxide, tungsten disulfide, hydrophobic silica and diesel oil according to a volume ratio of 1: 5-9, then grinding at a high speed of 100-300 r/min by using a high-speed grinding machine, controlling the temperature at 50-70 ℃ in the grinding process, grinding for 1-3 h, then placing the mixture into a rectifying tower, rectifying the mixture for 30-90 min at a negative pressure of-1 MPa to-1.5 MPa and a temperature of 60-85 ℃, cooling and recovering the distilled diesel oil, then sieving powdery solid substances by using a 200-300-mesh sieve, and sieving the sieved substances for later use;

stirring: putting about half of base oil into a stirring reaction kettle, starting a stirrer, controlling the temperature to be 60-80 ℃ and the speed to be 50-100 r/min, slowly adding the powder substance in the first step for 5-10 min, then slowly adding the molybdenum dialkyl dithiophosphate, the zinc dialkyl dithiophosphate, the polyisobutylene succinimide, the phosphate and the polymethacrylate for 20-30 min in sequence, then adjusting the stirring speed to 100-300 r/min, stirring for 30-60 min, then adding the other half of the base oil and the non-silicon type antifoaming agent, and continuously stirring for 1-3 h;

cooling and packaging: and cooling the grease to normal temperature, standing for 12-24 h, then putting the grease into a baking oven at 150-200 ℃ for baking for 1-2 h, and cooling to normal temperature for packaging.

2. The lithium-based lubricating grease for high and low temperature resistant and wear resistant of the vehicle hub bearing as claimed in claim 1, wherein: the base oil is lithium ester oil.

3. The lithium-based lubricating grease for high and low temperature resistant and wear resistant of the vehicle hub bearing as claimed in claim 1, wherein: the titanium dioxide, the tungsten disulfide and the hydrophobic silica are all nano-scale, and the average particle size is 40-100 nm.

Technical Field

The invention relates to the technical field of automobile lubrication, in particular to high and low temperature resistant and wear resistant lithium-based lubricating grease for a vehicle hub bearing.

Background

The hub bearing is one of the key parts of the automobile, and the main functions of the hub bearing are to bear the weight and provide accurate guidance for the rotation of the hub, so that the hub bearing is required to bear not only axial load but also radial load. Because the wheel hub bearing is very close to parts such as ground and high-temperature brake discs, needs to adapt to various complex road conditions and severe driving environments, and has good heat-resisting and wear-resisting properties, in order to prolong the service life of the wheel hub bearing, lubricating oil is often coated on the wheel hub bearing, the friction of the wheel hub bearing is reduced, the lubricating oil can volatilize in a high-temperature environment, the lubricating oil can be thawed in a low-temperature environment, the activity of the lubricating oil is reduced or the lubricating effect is lost, and the lubricating oil needs to be frequently added.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides high and low temperature resistant and wear resistant lithium-based lubricating grease for a vehicle hub bearing, and solves the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a high and low temperature resistant and wear resistant lithium-based lubricating grease for a vehicle hub bearing comprises the following raw materials in percentage by weight: 75-90% of base oil, 5-10% of titanium dioxide, 5-10% of tungsten disulfide, 5-10% of hydrophobic silica, 0.5-1% of molybdenum dialkyl dithiophosphate, 0.5-1% of zinc dialkyl dithiophosphate, 0.5-1% of polyisobutylene succinimide, 0.5-1% of phosphate, 0.5-1% of polymethacrylate and 0.05-0.1% of non-silicon type anti-foaming agent, and the method comprises the following steps:

(1) grinding and screening: mixing titanium dioxide, tungsten disulfide, hydrophobic silica and diesel oil according to a volume ratio of 1: 5-9, then grinding at a high speed of 100-300 r/min by using a high-speed grinding machine, controlling the temperature at 50-70 ℃ in the grinding process, grinding for 1-3 h, then placing the mixture into a rectifying tower, rectifying the mixture for 30-90 min at a negative pressure of-1 MPa to-1.5 MPa and a temperature of 60-85 ℃, cooling and recovering the distilled diesel oil, then sieving powdery solid substances by using a 200-300-mesh sieve, and sieving the sieved substances for later use;

(2) stirring: putting about half of base oil into a stirring reaction kettle, starting a stirrer, controlling the temperature to be 60-80 ℃ and the speed to be 50-100 r/min, slowly adding the powder substance in the first step for 5-10 min, then slowly adding the molybdenum dialkyl dithiophosphate, the zinc dialkyl dithiophosphate, the polyisobutylene succinimide, the phosphate and the polymethacrylate for 20-30 min in sequence, then adjusting the stirring speed to 100-300 r/min, stirring for 30-60 min, then adding the other half of the base oil and the non-silicon type antifoaming agent, and continuously stirring for 1-3 h;

(3) cooling and packaging: and cooling the grease to normal temperature, standing for 12-24 h, then putting the grease into a baking oven at 150-200 ℃ for baking for 1-2 h, and cooling to normal temperature for packaging.

Preferably, the base oil is a lithium-based ester oil.

Preferably, the titanium dioxide, the tungsten disulfide and the hydrophobic silica are all nano-scale, and the average particle size is 40 nm-100 nm.

Compared with the prior art, the invention has the following beneficial effects: the lithium-based lubricating grease for the vehicle hub bearing has the advantages that the high-temperature and low-temperature resistant anti-wear lithium-based lubricating grease is added with dialkyl molybdenum dithiophosphate to improve the anti-wear property of lubricating oil, an anti-corrosion additive is added to improve the anti-corrosion property of the lubricating oil and prolong the service life of the lubricating oil, the titanium dioxide, the tungsten disulfide and the hydrophobic silica are all nano-scale, the heat resistance and the lubrication degree of the lubricating oil are improved, the polyisobutylene succinimide effectively inhibits dust deposition on the hub bearing, and the practicability of the lubricating oil is improved.

Detailed Description