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METHOD OF CONTINUOUSLY HEAT-TREATING 7000-SERIES ALUMINIUM ALLOY SHEET MATERIAL
METHOD OF CONTINUOUSLY HEAT-TREATING 7000-SERIES ALUMINIUM ALLOY SHEET MATERIAL
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机译:连续热处理7000系列铝合金板材的方法
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摘要
The invention relates to a method for continuously solution heat-treating aluminium alloy sheet by continuously moving heat-treatable 7000-series aluminium alloy sheet through a continuous heat-treatment furnace arranged to heat the moving aluminium sheet to a set soaking temperature (TSET) in the temperature range of 370°C to 560°C, the continuous heat-treatment furnace has an entry section and an exit section, the moving aluminium sheet moves substantially horizontally through the continuous heat-treatment furnace, and wherein the moving aluminium sheet is rapidly cooled on leaving the exit section, and wherein before or near the entry section of the continuous heat-treatment furnace the moving aluminium sheet is pre-heated to a temperature of 5°C to 100°C below the TSET using an average heat-up rate as function of the sheet thickness of at least Y = -31.ln(X) + 50, wherein Y is the heat-up rate in °C/sec and X is the sheet thickness in mm.
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