Finke Aviaticon - Germany Motor Oil - Finke Oil Team
Germany motor oil
Germany motor oil
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METALWORKING LUBRICANTS<br />
Under machining, the production of a workpiece by<br />
removing material from a slug is meant. The lubricants<br />
used for machining are also referred to as cooling<br />
lubricants with a view to expressing their double<br />
cooling and lubrication function.<br />
The most important machining processes are:<br />
turning, drilling, milling, planing, thread cutting, grinding,<br />
lapping and honing. The cooling lubricant is<br />
intended to improve the machining performance<br />
and thus make the manufacturing process more<br />
economical compared to dry machining.<br />
The machining performance is affected by the<br />
following factors:<br />
··<br />
Machinability of the material<br />
··<br />
Tool (geometry and material)<br />
··<br />
Lubricant and how it is supplied<br />
The cooling lubricant has the following tasks:<br />
··<br />
Reduce cutting forces (friction) and thus energy<br />
consumption<br />
··<br />
Improve surface quality and dimensional stability<br />
··<br />
Extend the tool service life, e. g. by reducing wear<br />
and friction<br />
··<br />
Removing chips<br />
··<br />
Protecting workpieces against corrosion<br />
··<br />
Lowering the workpiece temperature<br />
WATER SOLUBLE COOLING LUBRICANTS<br />
Water-miscible cooling lubricants are mixed with water<br />
before use. The mixing ratio between water and<br />
oil depends on the desired result of the machining<br />
process. The higher the water content, the better the<br />
cooling effect; the higher the oil content, the better<br />
the lubricating effect.<br />
Since water and oil are not soluble in each other, a<br />
stable compound has to be produced by means of a<br />
so-called emulsifier. An emulsifier is a molecule which<br />
contains both an oleophilic (oil-loving) and a hydrophilic<br />
(water-loving) moieties. Several emulsifier molecules<br />
can thus stabilise an oil droplet in the water.<br />
Depending on whether water or oil is the outer phase,<br />
there will be an oil-in-water or a water-in-oil emulsion:<br />
··<br />
oil-in-water emulsions especially for machining<br />
techniques<br />
··<br />
and water-in-oil emulsions especially for<br />
moulding processes<br />
Depending on how the emulsion is composed, it will<br />
appear different:<br />
··<br />
conventional emulsions with high mineral oil<br />
content are mostly milky<br />
··<br />
semi-synthetic emulsions with low mineral oil<br />
content are transparent to milky<br />
··<br />
mineral oil-free emulsions (solutions) are<br />
transparent<br />
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