In general, there are two advantages of aluminum extrusions, the first one is the technology of extrusion, and the other is advantage of aluminum. The production of aluminum extrusions can save much money, for the reason that the section of aluminum is extremely stable, and designers can change the shape of aluminum arbitrarily. And the technology of extrusion is the only choice. To make metal into a specific cross-sectional shape, machining is more expensive than extrusion. And the worst is, the mental discharges are quite more than productions by machining. It will cost a lot to produce by welding, and every piece must be welded one by one. In addition, welding need more fixing tools, so expense will much more than extrusion tool. Rolling forming cannot compare with extrusion in cost. And there exists serious disadvantage in roll forming: it cannot deal with the products whose wall thickness is not unified. Metal and sand casting also needs large area surface dealing to finish the products, while extruded aluminum can produce relatively delicate product, and tolerance can be controlled appropriately.
How to prolong its working life
Scientific methods should be taken to protect mold.1. take the suitable speed. The fast speed of extrusion may cause the phenomenon of asymmetry and high temperature, an if the heat produced by metal transformation cannot be taken away in time, mold may become invalid for local overheating. 2. Make some nitrogen treatments in early using. The treatment can enhance the hardness of its surface to reduce the thermal wears, while surface nitrogen is not finished once. The working life of extrusion is a complicated problem, we should be familiar with all the features of aluminum extrusion in order to select the best technology to produce and the suitable methods to maintain it.
Development of the technology of aluminum extrusion
With the development of modern world, people pursue high demand in cost saving and time saving. So we will pay more attention to extrusion, because aluminum extrusion is relatively cheap. In most of time, the simple mold will just cost thousands yuan, while the other mold costs more than ten thousands yuan. It is too much expensive than the aluminum extrusion. On the other hand, it takes little time to produce aluminum extrusion mold, and the costs of preservation and maintenance is relatively low which can be almost ignored. It can be installed and put into use in short time with long working life. No one can deny the fact that many kinds of metals can be used in extrusion and production, however, aluminum is the most suitable metal because of its special characters.
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