国产精品乱码一区-性开放网站-少妇又紧又爽视频-西西大胆午夜人体视频-国产极品一区-欧美成人tv-四虎av在线-国产无遮挡无码视频免费软件-中文字幕亚洲乱码熟女一区二区-日产精品一区二区三区在线观看-亚洲国产亚综合在线区-五月婷婷综合色-亚洲日本视频在线观看-97精品人人妻人人-久久久久久一区二区三区四区别墅-www.免费av-波多野结衣绝顶大高潮-日本在线a一区视频高清视频-强美女免费网站在线视频-亚洲永久免费

機(jī)械社區(qū)

標(biāo)題: 混合陶瓷軸承的標(biāo)準(zhǔn),求 [打印本頁]

作者: 喜之郎    時間: 2011-6-1 20:53
標(biāo)題: 混合陶瓷軸承的標(biāo)準(zhǔn),求
請問哪位有關(guān)于混合陶瓷軸承的標(biāo)準(zhǔn),給我一份,萬分謝謝??!
作者: 伊凡    時間: 2011-6-2 14:40
Increasing use of silicon nitride rollers in recent years has led to the development of ASTM F2094/F2094M, Specification for Silicon Nitride Bearing Balls. It was developed by ASTM Subcommittee F34.01, which is under the jurisdiction of Committee F34 on Rolling Element Bearings.
, e! h- h2 T* w2 E/ b! RExamples of where hybrid roller bearings are found include high-speed machine tool spindles and high-pressure turbopumps that move liquid hydrogen in a space shuttle. End users of bearings, bearing manufacturers and roller manufacturers will use the standard to procure finished bearings to ensure they're made with sufficient material. Bearing companies can use the new standard to acquire finished silicon nitride rollers from the manufacturers, who will use the standard to ensure that unfinished roller blanks meet the material capability they need.4 Y/ G* P& W% }3 n7 k2 W4 C) q! Y" f
ASTM F2730/F2730M complements ASTM F2094/F2094M, Specification for Silicon Nitride Bearing Balls, according to William Mandler, general manager of Enceratec Inc. and task group chairman for the group responsible for developing the standard. "ASTM F2730, like ASTM F2094, provides a specification for the material used to make the roller-three levels of capability are included, so the material can be specified for the severity of the intended application," Mandler says. "The specification also provides dimensional specifications for form and surface condition of the finished roller."
作者: 伊凡    時間: 2011-6-2 14:40
本帖最后由 伊凡 于 2011-6-2 15:02 編輯 3 L) H: x2 Y  M1 E
: ~9 l  A) j; T- K. x+ w
ASTM Standard Specification F2094-01a for silicon nitride hybrid bearing balls.
作者: 伊凡    時間: 2011-6-2 14:41
本帖最后由 伊凡 于 2011-6-2 15:26 編輯
) H; ?) w' V1 R: u: t+ ]8 r9 E
+ ]# L; s0 b# m+ B  x國內(nèi)的不知道有沒有完整產(chǎn)品的標(biāo)準(zhǔn),我也問了國外的軸承廠家,不過只能知道是哪一個標(biāo)準(zhǔn),知道標(biāo)準(zhǔn)號后,再到網(wǎng)上搜搜有沒有免費的午餐,呵呵。
作者: 喜之郎    時間: 2011-6-2 15:40
回復(fù) 伊凡 的帖子, H' K3 r1 V2 P5 ]9 h5 S0 w7 T1 z, D

- W( A8 e# H3 F) S好的,謝謝,我去網(wǎng)上查查
作者: 阿波羅-王    時間: 2012-3-9 15:27
my clients ask for us must  be accordance with ASTM Standard Specification F2094-01a for silicon nitride to make ceramic balls and roller !
作者: 阿波羅-王    時間: 2012-3-9 15:42
建立和完善陶瓷軸承的國家標(biāo)準(zhǔn),對我們的成產(chǎn)企業(yè)非常的重要!0 r& y# R' B+ ]6 _* a" I! f
只有完善相應(yīng)的標(biāo)準(zhǔn),才能找到我們和國外的差距,明確目標(biāo),才能把握住方向,6 }% j* R+ b3 a2 T
只是苦于我們國家已經(jīng)沒有一個能夠有說服力的部門來牽頭去做這件事情,一般的企業(yè)又沒有這個能力.....




歡迎光臨 機(jī)械社區(qū) (http://m.whclglass.com.cn/) Powered by Discuz! X3.5