When solids come into contact with each other, between two contact surfaces creates a sticky bond there. The reduction of friction by creating a thin film of a liquid or gaseous body so as not to give rise to that bond is called Lubricant.<\/p>\n
The substance used for that purpose is called Lubricant.<\/p>\n
There are solid and liquid lubricants.<\/p>\n
Solid-state lubrication is a lubrication method that creates a solid powder layer between friction surfaces in contact with each other. According to Cu Long’s law of friction, there exists molybdenum disulfide powder and graphite.<\/p>\n
Liquid lubrication is lubrication by forming a liquid film of 10-5 mm or more on the friction surface and obeying Newton’s law of viscous friction.<\/p>\n
Coulomb’s law of friction means that the friction force F is only proportional to the vertical load P independent of the sliding speed and contact area.<\/p>\n
Friction force F = \u03bcP<\/p>\n
Newton’s law of viscous friction is friction in lubricants.<\/p>\n
It is proportional to friction velocity u and friction area A and inversely proportional to liquid film thickness h0.<\/p>\n
Friction force F = (\u03b7uA \/ h0) \u03ba<\/p>\n
Requirements for lubrication purposes:<\/p>\n
Anti-friction function: Reduces friction, wear and heat generation
\nCooling function: Prevents temperature rise in the lubricating part
\nSealing function: Tightness of cylinder and piston
\nCorrosion prevention function: Prevent rust and corrosion
\nDustproof function: Prevent foreign impurities
\nClean function: clean … remove foreign impurities, maintain cleanliness
\nStress dispersion function: The dispersion of the load is concentrated on the gear, bearing<\/p>\n
In order to achieve the above objectives, the following three factors must be considered:<\/p>\n
Operating conditions such as load, temperature, rotation speed, etc. on friction surfaces (bearings, gears, slides, etc.)
\nLubricant type and performance
\nLubrication method and lubrication conditions<\/p>\n
Lubrication can be achieved when these three elements are well combined.<\/p>\n
Provide the right lubricant at the right amount, at the right time, effectively and reliably at the point where lubrication is required<\/p>\n","protected":false},"excerpt":{"rendered":"
When solids come into contact with each other, between two contact surfaces creates a sticky bond there. The reduction of friction by creating a thin film of a liquid or gaseous body so as not to give rise to that bond is called Lubricant. The substance used for that purpose is called Lubricant. There are […]<\/p>\n","protected":false},"author":1,"featured_media":873,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-890","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"\n