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1. 发明授权

US06767504B2 Heat treatment furnace 有权
标题翻译：热处理炉
公开(公告)号：US06767504B2
公开(公告)日：2004-07-27
申请号：US10122144
申请日：2002-04-15
申请人： Kiyoyuki Hattori , You Ishii , Toshiyuki Harada
发明人： Kiyoyuki Hattori , You Ishii , Toshiyuki Harada
IPC分类号： C21B724
CPC分类号： F27B9/38 , C21D1/74 , C21D1/773 , C21D9/0006 , F27B9/04 , F27D7/06 , F27D2019/0009
摘要： In a heat treating method and furnace used in this method which can prevent disturbance of an atmosphere gas inside a heat chamber, and can prevent deterioration of the processing quality and efficiency of work, a control section 4 first operates a vacuum pump VP to reduce the inner pressure of a purge chamber 3 to a predetermined pressure level, then manipulates a large and small caliber operating valve (13a, 13b) to supply the atmosphere from the interior of the heat chamber 1 to that of the purge chamber 3, and the control section 4 actuates transporting means 5 to transport the work W between the purge chamber 3 and the heat chamber 1 in a state wherein the inner pressures of the purge chamber 3 and the heat chamber 1 have been rendered substantially equal on the basis of detected values from first and second pressure sensors PS1, PS2.
摘要翻译：在该方法中使用的热处理方法和炉子中，能够防止加热室内的气氛气体的干扰，能够防止加工质量的劣化和加工效率的降低，控制部4首先对真空泵VP进行动作，净化室3的内部压力达到预定压力水平，然后操作大口径和小口径的操作阀（13a，13b）以将气体从加热室1的内部供应到净化室3的气体，并且控制基于检测值的检测值，在清洗室3和加热室1的内部压力基本相等的状态下，第4部分致动输送装置5，以将清洗室3和加热室1之间的工件W输送到第一和第二压力传感器PS1，PS2。

2. 发明授权

US06582532B1 Steel for large bearing and parts for large bearing 有权
标题翻译：大型轴承用钢和大型轴承零件
公开(公告)号：US06582532B1
公开(公告)日：2003-06-24
申请号：US09868308
申请日：2001-09-27
申请人： Yutaka Kurebayashi , Sadayuki Nakamura , Kiyoyuki Hattori , Katsuhiko Kizawa
发明人： Yutaka Kurebayashi , Sadayuki Nakamura , Kiyoyuki Hattori , Katsuhiko Kizawa
IPC分类号： C22C3818
CPC分类号： C22C38/18 , C21D8/00 , C21D9/40 , C22C38/02 , C22C38/04 , F16C33/30 , Y10S148/906 , Y10S384/912
摘要： A steel for a large bearing suitable for parts of a large-sized bearing which are excellent in resistance to breakage and rolling fatigue life characteristics, and having a chemical composition by mass percentage of 0.80 to 1.30% of C, more than 0.35% and not more than 0.80% of Si, 0.30 to 0.90% of Mn, 0.90 to 1.50% of Cr, one or both of not more than 0.25% of Mo and 0.20 to 1.50% of Ni, the remainder being Fe and inevitable impurities, and exhibiting the following quench-hardenability measured according to a method specified in JIS G 0561: a HRC of 64 or more at J 1.5 mm, a HRC of 63 to 66 at J 7 mm, a HRC of 37 to 50 at J 15 mm, a HRC of 30 to 45 at J 20 mm, a HRC of 28 to 38 at J 45 mm.
摘要翻译：适用于大断裂和滚动疲劳寿命特性优异的大型轴承部件的大轴承用钢，其质量百分比为C：0.80〜1.30％，0.35％以上且0.35％以下， Si：0.80％以上，Mn：0.30〜0.90％，Cr：0.90〜1.50％，Mo：0.25％以下，Ni：0.20〜1.50％，Fe：不可避免的杂质和根据JIS G 0561中规定的方法测定以下淬火淬透性：在J1.5mm下HRC为64以上，J 7mm时HRC为63〜66，J 15mm时HRC为37〜50， HR为30〜45，J为20mm，HR为28〜38，J为45mm。

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