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    • 60. 发明授权
    • VERFAHREN ZUR WÄRMEBEHANDLUNG VON METALLISCHEM GUT
    • VERFAHREN ZURWÄRMEBEHANDLUNGVON METALLISCHEM GUT
    • EP0632842B1
    • 1995-11-02
    • EP93907835.8
    • 1993-03-26
    • HEIMSOTH VERWALTUNGEN GmbH & CO. KG Beteiligungsgesellschaft
    • BITTNER, Hans-GeorgWEBER, Hartmut
    • C21D9/00C21D1/74
    • C21D9/0056C21D1/74F27B9/028F27B2009/3638
    • A heat treatment process for metal articles in a roll type furnace is disclosed, in particular relatively thin for steel parts which easily warp when exposed to heat, such as ball bearing raceways, sheet metal rounds, blades and the like. The metal articles are heated in stages up to 800-850 °C in several pre-heating zones (I, II) with atmospheres containing free oxygen. Then the metal articles are heated in a high temperature zone (III) in a reducing atmosphere containing no free oxygen and run through this zone relatively quickly. The burners of the high temperature zone (III) are timed with shorter or longer periods, depending on the quantity of metal articles supplied and the amount of heat to be transmitted. The rolls are set in the high temperature zone (III) at a short distance from each other and the baffle plates (S, US) between the zones (I, II, III) are set at the smallest possible distance from the rolling track or the metal articles on the rolling track. The burners are located above and below the rolling track.
    • 公开了一种用于辊式炉中的金属制品的热处理工艺,特别是对于当暴露于热时容易弯曲的钢部件比如滚珠轴承滚道,金属片圆形部,刀片等相对较薄。 在含有游离氧的气氛的几个预热区(I,II)中,金属制品被分级加热至800-850℃。 然后将金属制品在不含游离氧的还原气氛中的高温区(III)中加热并相对快速地穿过该区。 根据所供应的金属物品的数量和要传输的热量,高温区(III)的燃烧器的时间更短或更长。 这些辊设置在高温区(III)中彼此相距很近的距离处,并且区(I,II,III)之间的挡板(S,US)被设定为离滚动轨道尽可能最小的距离,或者 滚动轨道上的金属物品。 燃烧器位于滚动轨道的上方和下方。