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1. Low hardness of aluminum alloy
Compared to titanium alloys and other hardened steels, aluminum alloys have lower hardness. The HRC hardness of ordinary aluminum plates is generally below 40 degrees HRC. Therefore, when the aluminum alloy is processed, the load of the cutting tool is small. Because aluminum alloy has better thermal conductivity, aluminum alloy has a lower cutting temperature, so it is suitable for cutting high speed.
2, sticking knife phenomenon
When the aluminum alloy is processed, the sticking phenomenon is serious, the chip discharging performance is poor, and the surface roughness is also high. Solve the sticky knife and the surface quality will be improved.
3, cutting tools are prone to wear
Inappropriate cutting tool materials and lubrication methods can cause the cutting tool to wear faster when the aluminum alloy is machined.
The traditional lubrication method for aluminum alloy processing is pouring emulsion. However, the problem of sticking knives and surface quality which are not good in aluminum alloy processing cannot be solved by this lubrication method, and the emulsion also causes environmental pollution and increases cost. Based on the characteristics of aluminum alloy processing, we can choose a suitable lubrication cooling method to optimize the cutting performance of aluminum alloy, improve the production efficiency of processing machinery and the quality of processed parts, reduce manufacturing costs and improve the ecological environment. People put their eyes on the micro-lubrication technology. .
Micro-lubrication technology - MQL is a technology that mixes a small amount of lubricating oil mist particles in compressed air to replace the cooling and lubrication of cutting fluid during metal cutting, and the lubricant used is non-toxic, degradable plant type. Lubricant. MQL is a green manufacturing technology that sprays high-speed suspended oil particles to the cutting point during the cutting process, which increases the permeability of the lubricant, improves the lubrication effect, and improves the surface quality. The amount of lubricating oil is 5-50ml/h. Between (the number of nozzles set according to need is the main factor determining the consumption), it is one ten thousandth of the cutting fluid. The advantages are: reducing the cost of lubricant, drying the workpiece without cleaning process, no need for waste treatment, and improving the processing environment.
Exploration on the processing of aluminum alloy micro-lubrication technology
Aluminum alloy materials can be used as raw materials for many parts processing, so they are often processed into various shapes and parts, and can be realized by various processing forms such as sawing, turning, milling, and drilling. Aluminum alloy processing has the following characteristics: