China Supal (Changzhou) Precision Tools Co.,Ltd Company News

At present, the processed aluminum parts are mainly divided into two categories: deformed aluminum alloy and cast aluminum alloy. Then, what kind of milling cutter is used for processing aluminum alloy, is it special milling cutter for aluminum alloy or special cutter for aluminum alloy, and its processing efficiency is better? In this paper, from the aspects of milling characteristics, machining tools and cutting parameters of aluminum alloy, it is best to talk about the milling cutter used for machining aluminum alloy. First, the processing characteristics of aluminum alloy Milling aluminum alloy has the following major features; 1. Low hardness of aluminum alloy Compared with titanium alloy and other hardened steel, the hardness of aluminum alloy is lower, of course, heat treatment, or the hardness of die-cast aluminum alloy is also high. The HRC hardness of ordinary aluminum plates is generally below 40 degrees HRC. Therefore, when machining an aluminum alloy, the load of the tool is small. Because of the better thermal conductivity of aluminum alloy, the cutting temperature of milling aluminum alloy is relatively low, which can improve the milling speed. 2. The alloy of aluminum is low in plasticity and has low plasticity and low melting point. When the aluminum alloy is processed, the problem of the sticking knife is serious, the chip discharging performance is poor, and the surface roughness is also relatively high. In fact, the processing of aluminum alloy is mainly the sticking knife and the roughness is not good. As long as the two problems of the sticky knife and the surface quality are solved, the problem of aluminum alloy processing is solved. 3, the tool is easy to wear because the tool material is not suitable, when processing aluminum alloy, the tool wear is often accelerated due to problems such as sticking knife and chip removal.   Machining aluminum alloys generally use a 3-blade aluminum milling cutter. Secondly, due to the difference in processing conditions, a 2-blade ball-end knife or a 4-blade flat-bottom knife is likely to be used. However, it is recommended that in most cases, a 3-blade flat end mill can be used. 1. The number of selected blades for aluminum tungsten steel milling cutters is generally 3 blades. The material is generally selected from YG type hard alloys, which can reduce the chemical affinity of the tool and aluminum alloy. General CNC tool brands have a series of special milling cutters for processing aluminum alloys. 2, high-speed steel material high-speed steel aluminum milling cutter is more sharp, but also can be well processed aluminum alloy. 3. Cutting parameters of milling aluminum alloy High-speed large-feed milling can be selected for processing ordinary aluminum alloys. Secondly, choose a larger front angle as much as possible to increase the chip space and reduce the phenomenon of sticking. If it is a finished aluminum alloy, it is not possible to use a liquid cutting fluid to avoid forming small pinholes on the machined surface. Generally, kerosene or diesel oil can be used as the cutting fluid for processing aluminum plates. The cutting speed of the machined aluminum alloy milling cutter varies depending on the material and parameters of the milling cutter and the machining process. The specific cutting parameters can be processed based on the cutting parameters given by the manufacturer.

Due to the high hardness of materials above HRC60, the tungsten tungsten milling cutters in the processing process are difficult to meet the processing requirements. After 10 minutes of CNC machining, severe wear and even broken tools appear. The high speed machine is more serious. After many fires, the mold requirements are higher and more difficult, so the accuracy of using ordinary tungsten milling cutters is not up to the following, so the selection of processing tools should pay attention to the following points:   1. Select the ultra-fine particle bar and the tungsten rigid milling cutter with high rigidity. This ensures the toughness and rigidity of the tool. 2. Choose the blade high helix angle design and the four-blade unequal design. This allows the tool to be slanted at high speeds and high hardness with small and powerful cutting. 3. Choose a new crystal coated tool. Many of the tungsten milling cutters on the market use PVD coatings to a large extent that cannot meet high hardness cutting. The new crystalline coating fundamentally addresses high temperature/acidification/wear resistance/longer life. 4. Cooperate with powerful tool companies to further obtain their technical support and tool configuration, reduce procurement links and reduce procurement costs. High rigidity tool design and new coating of tungsten rigid cutting cutter have high efficiency, high precision and long life in high speed and high hardness cutting. High speed and high efficiency processing from pre-hardened steel to hardened steel; High-precision finishing and other long-life; high-precision; high-quality processing. It is so easy to process high speed machines with high hardness.