共查询到20条相似文献,搜索用时 15 毫秒
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A diagnostic method for air heaters in blast furnaces is described. The method involves magnetic and ultrasonic monitoring,
thermometry, and metallographic analysis without the removal of samples. Monitoring data for several air heaters are presented.
The benefits of nondestructive monitoring methods are demonstrated. Such methods extend air-heater life and also prevent emergency
shutdowns. 相似文献
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The results of experimental and clinical studied of the suture material "Caproiod" are presented. The advantage of the material suggested is its favourable effect on regenerative processes in the region of suture and anastomoses which resulted in their increased hermeticity. Use of "Caproiod" permits to prevent the development of postoperative complications caused by a quality of the suture material. 相似文献
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LS Buchanan 《Canadian Metallurgical Quarterly》1996,15(2):42, 44-6, 48-9 passim
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接头是油套管产品的重要组成部分之一,也是石油、天然气开采中油套管柱中最薄弱的环节。接头的实体性能、使用性能和经济性是油套管主要指标。介绍了国内外油套管接头的发展:从最初API圆螺纹、长圆螺纹、偏梯形螺纹接头到各个厂家推出的具有各项突出性能的特殊螺纹接头,再回归到具有实用性的经济型油套管接头。介绍了具备密封完整性、结构完整性和重复上卸扣完整性的经济型气密封油套管接头的开发与进展。 相似文献
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V. N. Lebedev A. A. Podosyan A. E. Pozin I. E. Petrov K. N. Vdovin 《Steel in Translation》2012,42(11):784-786
New designs are proposed for the narrow mold walls in continuous-casting machines at OAO Magnitogorskii Metallurgicheskii Kombinat. The taper of the new walls varies over the height so as allow for shrinkage of the cast billet. 相似文献
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