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Heat treatment method of thick steel plate in direct flame type roller hearth type continuous heat treatment furnace and radiant tube type roller hearth type continuous heat treatment furnace
Heat treatment method of thick steel plate in direct flame type roller hearth type continuous heat treatment furnace and radiant tube type roller hearth type continuous heat treatment furnace
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机译:直接火焰式辊底式连续热处理炉中厚钢板的热处理方法及辐射管式辊底式连续热处理炉中的热处理
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摘要
PROBLEM TO BE SOLVED: To provide a heat treatment method for thick steel plate which can obtain material characteristics less in variation and enhances productivity.;SOLUTION: In the heat treatment method using a direct fired roller-hearth type continuous heat treatment furnace or a radiant-tube roller-hearth type continuous heat treatment furnace, the heat treatment is applied to a plane steel thick plate in the heat treatment temperature range of 300-450°C. In the heat treatment temperature range, the aimed heat treatment temperature range of Tsmin to Tsmax (°C) is set based on the temperature fluctuation range permissible in the material quality. As for this aimed heat treatment temperature range, the setting temperature range in the continuous heat treatment furnace is regurated so that the lower-limit temperature TGmin (°C) is defined as the upper-limit temperature +10°C or higher in the aimed heat treatment temperature range, and the upper-limit temperature TGmax (°C) is defined as Tsmin to Tsmax (°C) in the aimed heat treatment temperature range, and is lower than the temperature preset by specific formula according to the plate thickness (t)mm of the thick steel plate, and thus, the heat treatment is perfoermed by setting the furnace temperature TG (°C) in the continuous heat treatment furnace within this setting temperature range.;COPYRIGHT: (C)2011,JPO&INPIT
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机译:解决的问题:提供一种用于厚钢板的热处理方法,该方法可获得较少的材料特性变化并提高生产率。解决方案:使用直接燃烧式辊底式连续热处理炉或辐射炉的热处理方法-管式辊底式连续热处理炉,在300-450℃的热处理温度范围内对平板钢厚板进行热处理。在热处理温度范围内,根据材料允许的温度波动范围设定目标热处理温度范围Ts min Sub>至Ts max Sub>(℃)质量。对于该目标热处理温度范围,对连续热处理炉中的设定温度范围进行调整,以将下限温度TG min Sub>(℃)定义为上限温度。在目标热处理温度范围内为+ 10°C或更高,并且上限温度TG max Sub>(°C)定义为Ts min Sub>至Ts max Sub>(℃)在目标热处理温度范围内,并且低于根据厚钢板的板厚(t)mm根据特定公式预设的温度,因此进行热处理通过将连续热处理炉中的炉温TG(°C)设置在此设置温度范围内来进行。;版权所有:(C)2011,JPO&INPIT
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