The role of cutting fluid
The role of cutting fluid mainly has the following four kinds:
1, lubricating metal cutting fluid (referred to as cutting fluid) lubrication in the cutting process, can reduce the friction between the front and the cutting surface and the chip, after the cutting surface and the processed surface, forming part of the lubrication film, so as to reduce the cutting force, friction and power consumption, reduce the surface temperature and tool wear of the friction parts of the tool and the workpiece blank, improve the machining performance of the workpiece material.
2, cooling cutting fluid cooling effect is through it and due to cutting and heating tool (or grinding wheel), chips and workpiece convection and vaporization, the cutting heat from the tool and workpiece away, so as to effectively reduce the cutting temperature, reduce the workpiece and tool thermal deformation, maintain tool hardness, improve processing accuracy and tool durability.
3, cleaning in the process of metal cutting, the cutting fluid is required to have a good cleaning effect. Remove the generated chips, grinding chips, iron powder, oil and sand, prevent the machine tool and workpiece, tool contamination, so that the cutting edge of the tool or grinding wheel to keep sharp, do not affect the cutting effect.
4, rust prevention in the process of metal cutting, workpiece and environmental media and cutting fluid components decomposition or oxidation deterioration caused by mud and other corrosive media contact and corrosion, and cutting fluid contact machine tool parts surface will also corrosion. In addition, when the workpiece is temporarily stored after processing or in the process of transferring between processes, the cutting fluid is also required to have a certain rust prevention ability to prevent corrosion of metal caused by corrosive substances such as oil mud in the environmental media and residual cutting fluid. Especially in the wet and rainy season in the south of our country, more attention should be paid to the rust prevention measures between the working procedures. In addition to the above 4 other roles, the cutting fluid used should have good stability, in storage and use do not produce precipitation or stratification, oil, soap and aging phenomenon. It has certain resistance to bacteria and mold, and is not easy to grow mold and biodegradation, which leads to odor and deterioration. No damage to painted parts, no harm to human body, no irritating smell. Smoke-free, foggy or less smoky during use. Easy to recover, low pollution, discharge of waste liquid treatment is simple, after treatment can reach the national regulations of industrial sewage discharge standards