For rough machining, due to the need to remove more machining allowances, the amount of back cutting and the amount of feed are large, and more heat will be generated during cutting. At this time, the tool will be accelerated wear due to high temperature, and the workpiece will also be thermally deformed due to high temperature.
Therefore, the cutting fluid that needs to be used needs to have good cooling performance, and it is most suitable to use water-based cutting fluid. Although the lubricating effect of water-based cutting fluid is poor, the heat transfer effect is good, preventing high temperature smoke and fire.
For finishing, the main point of processing is accuracy, and the cutting feed is small. At this time, the frictional heat energy between the tool and the workpiece is low, and the accuracy of the workpiece can be effectively improved only by ensuring lubricity. Therefore, oil-based cutting fluid. Oil-based cutting fluid has better lubricating performance and poor cooling effect. Generally speaking, it is used when the cutting speed is lower than that.
The correct use of cutting fluid is very important for machining enterprises. To a certain extent, it ensures that the workpiece is stable, does not deform, and can improve machining productivity.
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