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What milling cutter is used for processing aluminum alloy


2019-12-06


At present, the processing of aluminum parts is mainly divided into deformation aluminum alloy and cast aluminum alloy two categories. Then processing aluminum alloy with what milling cutter. Is it with aluminum alloy special milling cutter or aluminum alloy special tool, its processing efficiency is better? In this paper, the milling characteristics of aluminum alloy, machining tools, cutting parameters to discuss the processing of aluminum alloy with the best milling cutter.

Processing characteristics of aluminum alloy

Milling aluminum alloy mainly has the following characteristics:

1. The low hardness of the aluminum alloy
Compared with titanium alloys and other quenched steels, aluminum alloys have a lower hardness. Of course, heat-treated, or die-cast aluminum alloys have a higher hardness. Generally, the HRC hardness temperature of the ordinary aluminum plate is lower. Which is lower than HRC 40 degrees. Therefore, when processing aluminum alloy, the tool load is small. Because the thermal conductivity of aluminum alloy is better. The cutting temperature of milling aluminum alloy is lower, can improve its milling speed.

2. Low plasticity of aluminum alloy

Aluminum alloys have low plasticity and low melting point. When processing aluminum alloy, its stick knife problem is serious, chip removal performance is poor, the surface roughness is also relatively high. In fact, the processing of aluminum alloy is mainly adhesive knife and roughness effect is not good. The problem of aluminum alloy processing can be easily solved as long as the two problems of the adhesive knife and surface quality are solved.

3. The tool is easy to wear
Because of the adoption of unsuitable tool materials, aluminum alloy processing, often because of the sticky knife, chip removal and other problems lead to faster tool wear.

Milling cutters for machining aluminum alloys

Generally, the 3-edge aluminum milling cutter is used for processing aluminum alloy. Secondly, due to the difference in processing conditions, it is likely to use a 2-edge ball head knife or 4-edge flat bottom knife. However, Beijing Demina suggested that in most cases, you can choose a 3-edge flat end mill.

1. The choice of aluminum tungsten steel milling cutter

The number of edges is generally 3 edges, and the material is generally selected as YG carbide, which can reduce the chemical affinity between the cutting tool and aluminum alloy. General CNC cutter brands have special aluminum alloy milling cutter series products, such as element brand 3P series, Switzerland Fraisa AL series.

2. High-speed steel material

High-speed steel aluminum milling cutter is sharper, can also be very good processing of aluminum alloy.

3. Milling aluminum alloy cutting parameters

Processing ordinary aluminum alloy can choose high – speed feed milling. Second, choose a larger front Angle as far as possible, increase the chip space, reduce the phenomenon of stick knife. If it is refined aluminum alloy, can not use water cutting fluid, to avoid the formation of small pinholes in the processing surface, generally can use kerosene or diesel to do the processing of aluminum cutting fluid.

The cutting speed of aluminum alloy milling cutter varies with the material and parameters of the milling cutter and the processing technology. Specific cutting parameters can refer to the cutting parameters given by the manufacturer for processing.

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