The general feature of indirect extrusion is that there is no relative sliding between the material and the inner wall of the billet container and there is no external friction between them.
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1、Without ant friction within billet and container-wall, more effective pressure, so it can extrude hard alloy; 2、Set up lower pre-heating temperature to improve extrusion speed and production efficiency; 3、 With the uniform flow of metal deformation , the difference of mechanical property from the vertical and horizontal can be reduce. |
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4、No obvious deformation zone, it can produce the profile which require shallow coarse grain ring and smaller grain size; 5、The lower extrusion temperature is good to uniform the structure property and dimension; 6、Less scrap, higher yield 7、Improve the lifetime of billet container. |
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Even-temperature Extrusion means constant extrusion temperature, and the variate, including:
1. Billet
diameter |
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Advantages：
1. Improves
dimensional stability |
Permanent magnet induction heater--A new generation induction heater in the aluminum industry |
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Henry Tho (GM) discuss the equipment improvement with foreign experts |
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Replacing traditional AC coil with magnetic induction |
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