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Selection of cutting fluid in
metal cutting process?
1.Rough turning machining
The
machining allowance of rough turning is large , so the cutting depth and feed
rate are large , cutting resistance is large , and produce a lot of cutting
heat , tool wear is also serious.The water based cutting fluid, which is mainly
used for cooling, lubrication and rust prevention, should be chosen to remove
the cutting heat in time, reduce the cutting temperature, and improve the tool
life. Generally, the extreme pressure emulsion is better.
The extreme pressure emulsion
not only has good cooling performance , but also has good extreme pressure
lubricity, it can obviously prolong the service life of cutting tools, improve
the cutting efficiency . Maintenance of guide rail surface of machine tool
should be paid attention to using water-based cutting fluid. Drying the cutting
fluid on the workbench before work and apply it with lubricating oil.
2.Finish
turning machining
The machining allowance of finish
turning is small , cutting depth only have 0.05~0.8mm,feed rate is
small ,and ensure the precision and roughness of workpiece . As the cutting
force of finish turning is small , the temperature is lower. So it is
appropriate to use emulsion with high concentration of (above 10%) and cutting
fluid with oil additive. For high precision requirement turning , such as the
finish turning screw thread , It is need to use rapeseed oil, soybean oil or
other products as lubricant to meet the requirements of precision.
As mentioned above, because of the poor
stability of vegetable oil,easy
oxidation,some
factories use 15%JQ-1precision
cutting lubricant +85%LAN32 full-loss system oil as the precision cutting oil,
the effect is very good.
3.Boring
machining
Boring mechanism is the same as
turning,but it's internal hole processing,cutting
and cutting speed are small,but the heat dissipation conditions are poor, the
emulsion can be used as cutting fluid, and the flow and pressure of cutting
fluid should be increased.
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