Tungsten carbide cutting fluid into an aqueous solution of water-soluble, synthetic cutting fluid emulsion and three.
Solution: adding rust is soft water-based agents, antifungal agents, has good cooling effect. Some of the oil was added an aqueous solution of an additive, a surfactant aqueous solution is transparent, in order to enhance lubricity and cleaning properties. Further, when the extreme pressure antiwear agent is added can be achieved by increasing the strength of the lubricant film at high temperature and high pressure. Solution commonly used in roughing and ordinary grinding.
Emulsion: a stirred mixture of water and then emulsified oil, milky white liquid formation. Use of the emulsion is very wide, can be formulated their own, with less emulsified oil emulsion called low concentration, it is mainly cooling effect for roughing and general grinding; major high concentration emulsion lubricant for finishing and processing of complex tool.
Synthetic cutting fluid: high performance at home and abroad to promote the use of cutting fluid, which is composed of water, various surface active agents, and chemical additives, it has good cooling, lubrication, cleaning and anti-rust, good thermal stability, long cycle and so on. Synthetic cutting fluid is not oil, can save energy, environmentally friendly, and abroad in high usage.
Tungsten carbide cutting tools is divided into two kinds of fluid to cool the main water-soluble cutting fluid to lubricate based and oil-soluble cutting fluid. Can be divided into an aqueous solution of water-soluble cutting fluid, emulsion and synthetic cutting fluid three. Oil-soluble cutting fluid can be divided into cutting oil and extreme pressure cutting oil two kinds. Solid lubricants are used most of molybdenum disulfide. Use molybdenum disulfide to prevent and suppress BUE produce, reduce cutting forces, can significantly extend the life of tungsten carbide cutting tools, reducing the surface roughness, eliminating the machined surface ripples and indentation, and carbide tool life can be doubled improved.
Tungsten carbide cutting tool cutting fluid has a cooling effect, lubrication, chip removal and washing effect and anti-rust, tungsten carbide tool cutting fluid can effectively reduce the cutting force, reduce the cutting temperature, reducing processing system thermal distortion, extended tool life and improve the quality of the machined surface. Selection of high-performance cutting fluid is also an important measure to improve the cutting of difficult materials. Cutting fluid should have anti-foaming, anti-mildew qualitative no pollution, no deterioration odor emissions environment, nontoxic to humans and the use of economic and other requirements.
Tungsten carbide cutting tool wear is inevitable in metal machining, the tool along the front surface of the chip load and high speed tool flank slip and friction generated energy is converted to heat, and this heat is taken away chips usually remaining among the incoming heat tool, heat and temperature are fundamental tool wear. Tungsten carbide cutting tool wear mechanism into abrasive wear, the phase transition wear, adhesive wear, diffusion and oxidation wear five forms. Reasonable choice of tool material, tool geometry parameters can improve the wear resistance, heat resistance and chemical stability of the tool. In addition, to improve the strength and tool sharpening tool quality, improve heat dissipation, the rational use of cutting fluids, can effectively prevent tungsten carbide tool wear.
Tungsten carbide cutting tool cutting process is through cutting exercise, like cut fruit to eat the rind cut off as cemented carbide cutting tools from excess metal layer formed on the workpiece cut chips and machined surfaces, this process of carbide cutting tools deformation, the formation of the chip, resulting in cutting force, cutting heat and cutting temperature, cutting tool wear, and many other phenomena. If the cut off peel back the original fruit roll back on, or you can fight together in accordance with the original look. However, carbide cutting tools cutting metal, especially in the continuous cutting of steel, the chip will not be as it is rolled up. Not because the chip is too hard, but because of the length of the chip will produce change's sake.
Chip shape under different cutting elements are also different. The thickness of the chip is several times the original, and a fraction of the length of the chip original. So, with a cutting speed obtained by cutting the chip, the chip is equivalent to a fraction of the cutting speed is produced.
After forming the shape of chips based on different shear slip cutting tools, chip into ribbon cuttings, festival-like chips, granular chip, chipping four types of chips.
Tungsten carbide tool wear at the time of the cutting tool by the work under high temperature conditions, the friction of the chip, so that the phenomenon of the tool material is gradually wear or breakage occurs. Explore the causes of tool wear, how to prevent premature, excessive tool wear and how to extend tool life, which is affecting productivity, a key factor in processing costs and processing quality. Tungsten carbide tool wear tool wear can be divided into normal and abnormal tool wear categories. Normal tool wear is continuous gradual wear and tear, including two non-normal tool wear and breakage of brittle plastic breakage.
Normal wear of tungsten carbide cutting tools: With the cutting time increased wear gradually expanded forms, including in front of wear, the main rear wear, deputy later wear.
Carbide single edge boring tool head structure and carbide turning almost single-edged tungsten carbide boring tool head mounted on the holder in accordance with the pore size of the hole is processed through manual manipulation, with screws Carbide location single edge boring tool tip. Carbide single edge boring tool head perpendicular to the axis of the boring bar and boring through holes, blind holes inclined installation can be boring. Carbide boring single-edged blade structure is not complicated, can be corrected original deflection and a small hole axis position deviation, wide adaptability, can be used for roughing, semi-finishing or finishing. However, the size of the tungsten carbide boring tool boring single blade aperture sizes rely on manual adjustments boring tool tip overhang to ensure more trouble, coupled with only a single blade tungsten carbide boring tool main cutting edge work, therefore, lower productivity, and more for single and small batch production.
