What milling cutter is used for processing aluminum alloy? Is it a special tool for aluminum alloy to make it more efficient?
We mainly talk about the characteristics of aluminum alloy milling, machining tools and cutting parameters.
1. Processing characteristics of aluminum alloy
The main characteristics of milling aluminum alloy are as follows:
1. Aluminum alloy has low hardness
Compared with titanium alloys and other quenched steels, the hardness of aluminum alloys is lower. Of course, the hardness of heat-treated or die-cast aluminum alloys is also very high. The HRC hardness of ordinary aluminum plates are generally below HRC40 degrees. Therefore, the tool load is small when machining aluminum alloy. Because aluminum alloy has better thermal conductivity, the cutting temperature of milling aluminum alloy is relatively low, which can increase its milling speed.
2. Low plasticity of aluminum alloy
Aluminum alloy has low plasticity and low melting point. When processing aluminum alloy, the sticking problem is serious, the chip removal performance is poor, and the surface roughness is relatively high. In fact, the main reason for processing aluminum alloy is that the effect of sticking knife and roughness is not good. As long as the two major problems of sticking knife and processing surface quality are solved, the problem of aluminum alloy processing will be solved.
3. The tool is easy to wear
Because of the use of unsuitable tool materials, when machining aluminum alloys, tool wear is often accelerated due to problems such as tool sticking and chip removal.
2. What milling cutter is used to process aluminum alloy?
Generally, 3-blade aluminum milling cutters are used to process aluminum alloys. Secondly, due to the difference in processing conditions, 2-blade ball-end knives or 4-blade flat-bottom knives are likely to be used. However, Dongguan Dahai suggests that in most cases, a 3-blade flat-bottomed end mill can be used.
1. High-speed steel material
High-speed steel and aluminum milling cutters are sharper and can also process aluminum alloys well.
2. The choice of tungsten steel milling cutter for aluminum
The material generally chooses YG cemented carbide, which can reduce the chemical affinity between the tool and the aluminum alloy. General CNC tool brands have special milling cutter series products for processing aluminum alloy.
Third, the cutting parameters of milling aluminum alloy
Generally, high-speed and large-feed milling can be selected for processing ordinary aluminum alloy. Secondly, choose a larger rake angle as much as possible to increase the chip space and reduce the phenomenon of sticking. If it is a finishing aluminum alloy, water-based cutting fluid cannot be used to avoid the formation of small pinholes on the processed surface. Generally, kerosene or diesel oil can be used as the cutting fluid for aluminum plate processing.
The cutting speed of machining aluminum alloy milling cutters varies with the material and parameters of the milling cutter, and the processing technology. The specific cutting parameters can be processed based on the cutting parameters given by the manufacturer.
What kind of milling cutter should be used for milling aluminum alloy?
2021 12/06