| 摘要 |
<p>A composition for lubricating-film formation which comprises a base and dissolved therein at least one basic oil selected among basic sulfonates, basic salicylates, and basic phenates. The composition is applied to the frictional surface of a box and/or pin constituting a screw joint to form a lubricating film. The composition can further contain one or more of particulate thermoplastic resins, other oils, and extreme-pressure additives. The mating parts preferably have a surface roughness of 5 to 40 νm in terms of Rmax.</p> |
