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润滑油润滑脂有什么作用
发布者:admin 发布时间:2015-06-04 浏览量:admin
 
 
      润滑是利用油、脂或者其他流体材料等手段,使运动物体之间的接触表面能分隔开来,以求降低摩擦、减少磨损,降低温度,防止锈蚀,阻尼振动的重要作用。主要起润滑、冷却、防锈、清洁、密封和缓冲等作用。
 
       Lubrication is to use the means of oil, grease or other fluid materials, so that the contact surface between the moving object can separated, in order to reduce friction and reduce wear and reduce the temperature to prevent corrosion, vibration damping important role. Mainly from the lubrication, cooling, anti-rust, cleaning, sealing and cushioning effects.
按来源分动、植物油,石油润滑油和合成润滑油三大类。
 
By source move, vegetable oils, petroleum oils and synthetic lubricants three categories.
       石油润滑油的用量占总用量97%以上,因此润滑油常指石油润滑油。主要用于减少运动部件表面间的摩擦,同时对机器设备具有冷却、密封、防腐、润滑、减震、功率传送、清洗杂质等作用。
 
        The amount of lubricating oil more than 97% of the total amount, so often referred to petroleum oil lubricants. Mainly used to reduce friction between the moving parts of the surface, while the equipment has a cooling, sealing, corrosion, lubrication, shock absorption, power transmission, clean impurities and so on.
        润滑油冷却作用:机械在运转时,如果一些摩擦部位得不到适当的润滑,就会产生干摩擦。实践证明,干摩擦在短时间内产生的热量足以使金属熔化,造成机件的损坏甚至卡死。因此必须对机械中的摩擦部位给予良好的润滑。当润滑油流到摩擦部位后,就会粘附在摩擦表面上形成一层油膜,减少摩擦机件之间的阻力,而油膜的强度和韧性是发挥其润滑作用的关键。
 
         Oil cooling effect: machinery in operation, if some friction parts are not properly lubricated, it will produce dry friction. Practice has proved that the dry friction in a short time to produce enough heat to melt the metal, causing damage to parts or even stuck. Therefore must be given a good lubrication of mechanical friction site. When the lubricating oil flows to the friction parts, it will form a film adhering to the friction surface, reducing friction resistance between the parts, and the oil film strength and toughness is a key to play its lubricating.
 
           洗涤作用:机械在工作中,会产生许多污物。如吸入空气中带来的砂土、灰尘,积炭,润滑油氧化后生成的胶状物,机件间摩擦产生金属屑等等。这些污物会附着在机件的摩擦表面上,如不清洗下来,就会加大机件的磨损。因此,必须及时将这些污物清理,这个清洗过程是靠润滑油在机体内循环流动来完成的
 
   Washing effect: mechanical work, will produce a lot of dirt. If inhaled air to bring sand between dust, coke, after oxidation of lubricating jelly, mechanical friction metal shavings and so on. The dirt will be attached to the surface of the friction parts, if not cleaned off, it will increase the mechanical wear and tear. Therefore, these contaminants must be promptly cleaned by the cleaning process is the lubricant circulating in the body to complete.
 
         密封作用:发动机的气缸与活塞、活塞环与环槽以及气门与气门座间均存在一定间隙,这样能保证各运动副之间不会卡滞。但这些间隙可造成气缸密封不好,燃烧室漏气结果是降低气缸压力及发动机输出功率。润滑油在这些间隙中形成的油膜,保证了气缸的密封性,保持气缸压力及发动机输出功率,并能阻止废气向下窜入曲轴箱。
 
Seal: between the cylinder and the piston, piston ring and ring groove and engine valve and valve seat are certain gaps, this will ensure that each deputy campaign between not catching. However, these gaps can cause cylinder seal is not good, the result is to reduce the leakage chamber cylinder pressure and engine power output. Lubricating oil film formed in these gaps, to ensure the tightness of the cylinder, keep the cylinder pressure and engine power output, and to prevent exhaust gases downwardly into the crankcase.
 
 
        防锈作用:润滑油在机件表面形成的油膜,可以避免机件与水及酸性气体直接接触,防止产生腐蚀、锈蚀。
 
        Antirust effect: film formed on the surface lubricant in parts, to avoid direct mechanical contact with water and acid gases and prevent corrosion, rust.

 

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