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In the heat treatment of steel, oils are used in three operations in conventional hardening, in which steel is quenched into oil at or near room temperature quenching oils in hot quenching, in which the steel is quenched into hot oil martempering oils and in tempering tempering oils.
ALTHOUGH in general the use of an emulsion or a straight cutting oil will be conditioned by either the material to be machined, the particular tool, or the requirement of the operation itself, it would yet be correct to say that, broadly speaking, these two physically very different fluids will...
BEARING lubrication of large and valuable machinery requires correct volume and pressure of oil at all times and these cannot be left to chance. Apart from the quality of the lubricant used, the responsibility for maintaining efficient running of the plant is in the hands of the machine...
In our April 1953 issue, we published a shortened version of a paper by Borge Lunn entitled Some Experiments with Sleeve Bearings which detailed a new test method for assessing the properties of bearing metals for sleeve bearings. The paper was originally presented to the Danish Academy of...
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