4. Second transformation
Given the relatively low melting point of zinc and its common alloys, two main types of processing can be distinguished: cold processing, where the product is at a temperature close to room temperature (10 to 30°C), and hot or warm processing, where the product temperature is above 100°C, either before deformation or as a result of heating due to high-speed forming.
4.1 Second hot transformation
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Reverse impact extrusion is widely used around the world to...
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Second transformation
Conclusion
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Economic data
The world market for rolled products for the building industry (around 90% of total consumption) is around 300,000 t/year, with annual growth of 2%. Production and consumption vary widely from one country to another, depending above all on the traditions inherited from the previous two centuries.
Western Europe is largely dominant, but there is strong growth in consumption in new markets, notably...
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