What should be paid attention to in the main cutting tool when processing aluminum profiles?
When selecting materials during the processing of aluminum profiles, it is considered that their corrosion resistance can be excellent because a thin aluminum oxide surface layer is formed when the bare metal is exposed to air, effectively preventing further oxidation in a process called passivation. The strongest aluminum alloys have poor corrosion resistance due to electrochemical reactions with alloyed copper. When you combine aluminum with other metals to make an aluminum alloy, aluminum comes into its own. Some of the metals commonly used to make aluminum alloys include boron, copper, lithium, magnesium, manganese, silicon, tin, and zinc.
Aluminium is a relatively soft, durable, lightweight, tough and malleable metal that can vary in appearance from silver to dull grey, depending on surface roughness. It is non-magnetic and does not easily ignite. Aluminum is a tin-white metal that melts at 640 degrees, is very light, and has a density of 2.68. It is hard and strong, and can be rolled into thin foil when annealed frequently. It is a good conductor of heat and electricity, but not as good as copper for a given wire cross section, and is used for precision CNC machining in industries such as aerospace or medical.
What should we pay attention to in the processing of aluminum profiles in our CNC machining workshop?
The main cutting tools when machining aluminum profiles are worth noting: minimize the tendency of aluminum to hold to the cutting edge of the tool; ensure good chip evacuation from the cutting edge; and ensure that the core of the tool is strong enough to withstand cutting forces without Won't break. Tools used to machine aluminum alloys include high-speed steel, because of its low chemical affinity for aluminum and greatly improved surface finish, and diamond tools. The latter tool can reasonably reduce the build-up of the adhesion layer on the edge of the tool in the direction of chip flow. We use 5-axis machining equipment as well as conventional milling equipment.
One of the main failure modes of cutting tools when machining aluminum profiles is that the material being machined adheres to the cutting edge of the tool. This condition can quickly reduce the cutting ability of the tool. The combined edge created by the adhering aluminum dulls the tool so that it can no longer cut through the material. Tool material selection and tool coating selection are the two main techniques tool designers use to reduce the occurrence of combined edges.
Aluminum alloys contain zinc as the main alloying element. It is strong, comparable in strength to many steels, and has good fatigue strength and average machinability. It has lower corrosion resistance than many other aluminum alloys and better corrosion resistance in comparison. Its relatively high cost limits its use in applications where less suitable alloys are not suitable. Machined in the annealed condition. Oil lubricants are used to perform machining operations. Aluminum alloy cnc machining and drilling.
Some aluminum extrusions contain magnesium and silicon as their main alloying elements. It has good mechanical properties, has good weldability, and it is one of the most common aluminum alloys in general use. Typical properties of some aluminum alloys include: medium to high strength, hood toughness, good surface finish when machined, excellent corrosion resistance to atmospheric conditions, good corrosion resistance to seawater, easy anodizing, good weldability and Solderability, good workability. This type of aluminum profile processing material is one of the most widely used products for 5-axis precision machining in the CNC machine vehicle industry.
It is worth remembering during the machining of aluminum profiles that the interaction of the workpiece with the machining tool can cause abrasive flank wear when machining aluminum cast alloys, affecting the shape and dimensional accuracy and surface integrity of the workpiece. Compared to ferrous alloys, the cutting forces in the machining of aluminium profiles are generally lower because of their lower mechanical strength, which may result in 70% lower specific cutting pressures than the machining of steel. However, it should be noted that this difference is minimal in aluminum extrusion processing and depends on their chemical composition and physical properties.
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