Discussion on lubrication
Discussion on lubrication
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DOI:
10.1088/1478-7814/32/1/339
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发表时间:
1919
期刊:
影响因子:
--
通讯作者:
R. M. Deeley
中科院分区:
文献类型:
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作者:
R. M. Deeley
WHEN metallic, or other surfaces, in contact are caused to slide over each other, considerable frictiond resistance to motion results and the surfaces abrade each other, In machinery there are numerous rubbing surfaces, and the materials in contact must slide over each other with as little frictional resistance and as little wear as possible. Engineers have found by experience that the resistance to motion of such bearing surfaces, and the amount of abrasion or wear they suffer may be greatly reduced by interposing between them certain liquids or greases, known as lubricants. Not all liquids will act as lubricants. Indeed, it has always been necessary to ascertain by actual trial what liquids are suitable and what are not. Until the growth of the heavy mineral oil industry, almost all the lubricating oils and fats used were either of vegetable or animal origin, and engineers found by experience which particular oil or fat was suitable for any particular machine. Given the required lubricant, the proper running of’the machine was guaranteed. But with the enormous growth of our industries depending upor: machinery for their existence, the demand for lubricants became so great that the supply of vegetable and animal oils was not sufficient to meet the requirements,, and the mineral oils were pressed into service whenever possible.