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首页> 外文会议>World Tribology Congress III vol.1; 20050912-16; Washington,DC(US) >FRETTING WEAR CHARACTERISTICS OF TUBE-SUPPORT COMPONENTS FOR A STEAM GENERATOR IN ELEVATED TEMPERATURE
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FRETTING WEAR CHARACTERISTICS OF TUBE-SUPPORT COMPONENTS FOR A STEAM GENERATOR IN ELEVATED TEMPERATURE

机译：高温下蒸汽发生器管道支撑部件的微动磨损特性

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摘要

Tubes in nuclear steam generators are held up by supports because the tubes are long and slender. Fluid of high-pressure and high-temperature flows in the tubes and the flows cause oscillating motions between tubes and supports. This is called FIV (flow induced vibration) which cause fretting wear in contact part of tube-support. The fretting wear of tube-support can threaten the safety of nuclear power plant. Therefore, a research about the fretting wear characteristics of tube-support is required. This work is focused on investigations of fretting wear characteristics and wear mechanisms of tube-support. Results are that the wear rate of tube is proportional to that of support and as water temperature increases the wear volume of tube-support decreases because the oxidation rate decreases due to lack of the oxygen concentration in contact surfaces. Also, the wear mechanisms of tube-support are abrasive and oxidational wear.
机译：核蒸汽发生器中的管子长而细，因此被支撑物支撑着。高压和高温的流体在管中流动，并且这些流动引起管和支撑件之间的振荡运动。这称为FIV（流动引起的振动），会引起管支架接触部分的微动磨损。管支架的微动磨损会威胁到核电站的安全。因此，需要对管支架的微动磨损特性进行研究。这项工作的重点是研究微动磨损特性和管支架的磨损机理。结果是，管的磨损率与支撑件的磨损率成正比，并且随着水温的升高，管接触件的磨损量减小，这是因为由于接触表面中氧浓度的缺乏导致氧化率降低。而且，管支撑件的磨损机理是磨料磨损和氧化磨损。

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