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    • 5. 发明公开
    • QUENCHING APPARATUS AND METHOD FOR PRODUCING METALLIC MATERIAL
    • LÖCHUNGSVORRICHTUNGUND VERFAHREN ZUR HERSTELLUNG EINES METALLISCHEN MATERIALS
    • EP3153596A1
    • 2017-04-12
    • EP15803190.6
    • 2015-06-01
    • Nippon Steel & Sumitomo Metal Corporation
    • HAMASAKI, YutakaHAYASHI, HiroshiHOSOYA, ShinjiKUWAYAMA, Shinjirou
    • C21D1/667B01D19/02C21D1/18C21D1/613
    • C21D9/085B01D19/0031B01D19/02C21D1/18C21D1/613C21D1/64C21D1/667
    • A quenching apparatus that can enhance hardenability is provided. A circulation apparatus (50) in the quenching apparatus recovers cooling fluid after the cooling fluid is used for quenching, and supplies the cooling fluid to a defoaming bath (431). A laminar flow weir (433) of a defoaming apparatus (4) partitions the defoaming bath (431) into a laminar flow bath (434) and a shallow bath (435). The laminar flow weir (433) is lower than a side wall of the laminar flow bath (434). Cooling fluid from the circulation apparatus (50) is supplied to the laminar flow bath (434), and the cooling fluid is poured into the shallow bath (435) from the laminar flow bath (434) along the laminar flow weir (433). A filter (432) is a plate shape or a sheet shape and has a mesh structure, and covers an opening in a bottom portion of the shallow bath (435). The liquid level height in the shallow bath (435) is less than the height of the laminar flow weir (433). A supply bath (441) accumulates cooling fluid that passes through the filter (432), and supplies the cooling fluid to a cooling apparatus that sprays the cooling fluid onto a metallic material.
    • 提供了可以提高淬透性的淬火装置。 淬火装置中的循环装置(50)在冷却流体用于淬火之后回收冷却流体,并将冷却流体供应到消泡槽(431)。 消泡装置(4)的层流堰(433)将消泡槽(431)分隔成层流浴(434)和浅浴(435)。 层流堰(433)低于层流浴(434)的侧壁。 将来自循环装置(50)的冷却流体供给到层流槽(434),将冷却流体从层流槽(434)沿层流堰(433)注入浅槽(435)。 过滤器(432)是板状或片状,并且具有网状结构,并且覆盖浅槽(435)的底部的开口。 浅水浴(435)中的液位高度小于层流堰(433)的高度。 供给槽(441)积存通过过滤器(432)的冷却流体,并将冷却流体供给到将冷却流体喷射到金属材料上的冷却装置。