According to the requirements of the specific alloy grade produced, the amount of various alloy compositions is calculated, with reasonable various raw materials. Then good raw materials are added to the melting furnace according to the process requirements, and the gas in the melting is effectively removed by degassing, slag refining slag hybrid means.
Under certain conditions, through the deep casting system, cooling casting into a variety of round casting rods molten aluminum smelting good casting process. Aluminum extrusion process is a device for extruding molded profiles. Based on the section of this profile, the design, manufacture, and extrude the first product of the mold using an extruder from the mold heated round to a good casting rod extrusion molding. Ordinary alloy extrusion also manual aging treatment with air cooling quenching treatment, and after the completion of thermal strengthening. Different grades of alloys can be strengthened by heat treatment and different heat treatment systems.
Thickness of thin oxide film. The national standard building alumina film thickness should not be less than 10um (micron). Thickness is not enough, aluminum surface easy to rust, corrosion. Sampling and some proletarian names, addresses, production licenses, aluminum certificates, only 2 ~ 4UM oxide film thickness, some even no oxide film test. According to the expert estimate of reducing the oxide film thickness of 1 micron, the profile can reduce the power consumption of more than 150 yuan per ton of cost.
Some manufacturers aluminum processing chemical composition is not qualified. A large number of miscellaneous aluminum and waste aluminum are added, although the cost is greatly reduced, the result is the failure of aluminum structure, which seriously endangers the safety of construction projects, so we must pay attention to the quality in the process of aluminum profile processing.
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