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1. 发明公开

EP1914325A1 CONTINUOUS HEAT TREATMENT FURNACE AND UTILIZING THE SAME, METAL PIPE AND METHOD OF HEAT TREATMENT 有权
标题翻译： KONTINUIERLICHEWÄRMEBEHANDLUNGVON METALLROHREN
公开(公告)号：EP1914325A1
公开(公告)日：2008-04-23
申请号：EP05761733.4
申请日：2005-07-25
申请人： SUMITOMO METAL INDUSTRIES, LTD.
发明人： TATSUOKA, Mikio, Sumitomo Metal Industries, Ltd. , SAKAMOTO, Akihiro, Sumitomo Metal Industries, Ltd.
IPC分类号： C21D9/08 , C21D1/00 , C21D1/74
CPC分类号： C21D1/00 , C21D1/74 , C21D9/08 , F27B9/045 , F27B9/20 , F27D7/06 , F27D99/007 , F27D99/0073 , Y10T428/12
摘要： One aspect of the present invention provides a continuous heat treatment furnace in which an atmosphere-control gas is introduced to a heating chamber 1 having a heating zone 1a, metal tubes are continuously charged along an axial direction from a furnace entrance 2a, and the metal tube subjected to a heat treatment is taken out from a furnace exit 2b. The continuous heat treatment furnace includes a front chamber 4 which has a preheating zone 3 on an entrance side of the heating chamber and seal curtains 5a and 5b which are located on an entrance side and an exit side of the front chamber. Another aspect of the present invention provides a metal tube subjected to the heat treatment using the continuous heat treatment furnace, and yet another aspect of the present invention provides a heat treatment method for performing the heat treatment using the heat treatment furnace. Desirably a rear chamber 6 is provided on an exit side of the heating chamber and seal curtains 7a are attached onto an entrance side of the rear chamber. Even if a post-cold working washing process is performed only by alkali degreasing and washing, an adhered substance to inner and outer surfaces of the metal tube can easily be removed before the heat treatment by the heat treatment furnace and the heat treatment method.
摘要翻译：本发明的一个方面提供一种连续热处理炉，其中将气氛控制气体引入到具有加热区域1a的加热室1中，从炉入口2a沿轴向连续地填充金属管，并且金属从炉出口2b取出经受热处理的管。连续热处理炉包括前室4，其在加热室的入口侧具有预热区域3，并且位于前室的入口侧和出口侧的密封窗5a和5b。本发明的另一方面提供一种使用连续热处理炉进行热处理的金属管，本发明的另一方面提供一种使用该热处理炉进行热处理的热处理方法。理想地，后室6设置在加热室的出口侧，密封窗7a附着在后室的入口侧。即使仅通过碱脱脂和洗涤进行后冷加工清洗工序，在通过热处理炉的热处理和热处理方法之前，可以容易地除去金属管内外表面的粘附物质。

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