公开(公告)号：EP2031260A1

公开(公告)日：2009-03-04

申请号：EP07744513.8

申请日：2007-05-31

申请人： NSK Ltd.

发明人： UCHIDA, Hiroyuki ,  OHIRA, Takamasa ,  KAMIJO, Haruo ,  SAITO, Tsuyoshi ,  KINNO, Dai ,  HIGASHI, Shingo ,  YOSHIDA, Naohiro ,  TANAKA, Sadayuki ,  TAKEDA, Seisuke ,  MAEDA, Akitoshi ,  SHOUDA, Tooru ,  KONDO, Masateru ,  TAKETA, Kazunobu ,  MOTODA, Tomohiro

IPC分类号： F16C33/58 ,  F16C19/06 ,  F16C33/62 ,  G03G15/00

CPC分类号： G03G15/0935 ,  B65G39/09 ,  C23C28/021 ,  C23C28/023 ,  C23C28/025 ,  F16C13/06 ,  F16C19/52 ,  F16C23/082 ,  F16C33/32 ,  F16C33/34 ,  F16C33/64 ,  F16C2204/34 ,  F16C2204/36 ,  F16C2204/50 ,  F16C2223/08 ,  F16C2223/80 ,  F16C2240/60 ,  F16C2300/42 ,  G03G15/0233 ,  G03G15/0808 ,  G03G15/0818 ,  G03G15/2053 ,  G03G15/751

摘要： A rolling device in which rust development or damage on a raceway surface or rolling surface is hard to occur even if water and the like intrude is provided. A self-aligning roller bearing comprises an inner ring 1, an outer ring 2, and a plurality of rolling elements 3 disposed rotatably between a raceway surface 1a of the inner ring 1 and a raceway surface 2a of the outer ring 2. At least any one of the inner ring 1, the outer ring 2, and the rolling elements 3 is provided with a metal coating formed by shot peening of a powder of metal less noble than iron at least on a part of its surface.

摘要翻译： 即使在水等侵入的情况下也难以发生生锈或轨道面或滚动面的损伤的滚动装置。 自调心滚子轴承包括内圈1，外圈2和可旋转地设置在内圈1的滚道表面1a和外圈2的滚道表面2a之间的多个滚动元件3。 内圈1，外圈2和滚动体3中的一个设置有金属涂层，该金属涂层至少在其表面的一部分上通过对比金属更不贵的金属粉末喷丸硬化而形成。

公开(公告)号：EP2821772A1

公开(公告)日：2015-01-07

申请号：EP12870021.8

申请日：2012-07-24

申请人： NSK Ltd.

发明人： MITSUMURA, Munetaka ,  OKITA, Shigeru ,  UCHIDA, Hiroyuki

IPC分类号： G01N3/22 ,  B22C9/24 ,  B22D17/00 ,  G01N29/04

CPC分类号： G01N3/22 ,  B22C9/24 ,  B22C19/04 ,  B22D17/00 ,  B60R25/02115 ,  E05B15/1614 ,  G01N29/11 ,  G01N2203/0067 ,  G01N2291/0234 ,  G01N2291/02827 ,  G01N2291/044

摘要： There are provided a strength evaluation method of a die casting product capable of appropriately evaluating the strength of the die casting product, and a die casting product in which the strength is evaluated by the strength evaluation method. A breakage test is performed by a simple strength tester after casting, and then, a strength reduction ratio is estimated based on an area ratio of cold flakes in a broken surface obtained by broken surface observation.
Alternatively, ultrasonic flaw detection is performed for an internal defect in a predetermined range of a high stress portion of the die casting product, calculated by stress analysis in advance, and the die casting product is evaluated to have a predetermined strength when a defect ratio obtained by dividing a total area of the internal defect in the predetermined range by a total defect detection area is less than or equal to a predetermined value.

摘要翻译： 提供了能够适当地评价压铸产品的强度的压铸产品的强度评估方法和通过强度评估方法评价强度的压铸产品。 在铸造后，通过简单的强度试验机进行断裂试验，然后基于通过破碎的表面观察得到的破裂面中的冷片的面积比来推定强度降低率。 或者，对于预先通过应力分析计算的压铸产品的高应力部分的预定范围内的内部缺陷进行超声波探伤，并且当获得的缺陷率时，将压铸产品评价为具有预定强度 通过将预定范围内的内部缺陷的总面积除以总缺陷检测区域小于或等于预定值。