Tungsten Copper CNC Processing — Cutting Fluid Selection and Feeding Route Arrangements

Except that tools and cutting parameters selection, it is also should be noticed that cutting fluid selection and feeding route arrangements in the CNC processing of tungsten copper. Cutting fluid is also called coolant, which is for use in metal cutting, grinding process used to cool and lubricate the cutting tool and the workpiece industrial liquid. Cutting fluid composed by a variety of super-functional additives and has many advantages, such as good cooling performance, lubricating properties, corrosion performance, degreasing cleaning, anti-corrosion features, easy to dilution characteristics. In order to overcome the traditional soap emulsion is easy to smell the summer, hard winter diluted, poor rust problems, and no adverse effects on the lathe paint for ferrous metal cutting and grinding, is currently the most advanced grinding products. Compared to oil saponification, cutting fluid indicators is better, and it has good cooling, cleaning, rust and other characteristics, and with non-toxic, tasteless, non-corrosive to the human body, the device does not corrode the environment without pollution. When cutting a workpiece of tungsten copper will produce high cutting temperature, which is difficult to transfer. So it requires the cutting fluid to enhance the lubricating properties, to reduce cutting forces, greatly improve the durability of the tool, and effectively prevent the sticking knife premature tool wear.

The key process of preventing tungsten copper appearing cracks and dregs in machining is to arrange the feeding route in CNC milling process. Generally, the feeding route follows these principles:
1. Reasonable milling: It can be divided into clockwise and counterclockwise. Milling clock wise is more stable, has shorter cutting distance and it can effectively reduce the bonding chip and improve the surface roughness;
2. To ensure chips out of sample in case of the milling defects by brittle material;
3. To avoid large feeding rate and edge chipping and dregs;
4. When machining plane or a blind slot, select the workpiece surface is not suitable for vertical in feed and possible, choose a slash or helical in feed, to avoid cracking the workpiece;
5. When drilling, it must be close to the other flank of the metal pad, which can effectively control a knife orifice dregs appear.

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