燃气舵用钼渗铜连接板超声波探伤不连续显示分析

Analysis on discontinuous display of ultrasonic flaw detection of molybdenum infiltrated copper connecting plate for gas rudder

以燃气舵系统中使用的钼渗铜(牌号Mo-10Cu)连接板为研究对象,对产品在超声波探伤过程中发现的不连续显示现象进行分析。结果表明,钼渗铜产品超声探伤标注的带状区域(不连续显示区域)存在直径约2~5μm的微孔,微孔是造成超声波探伤不连续显示的根本原因。带状区域与非带状区域,组织几乎相同,力学性能相近;并提出了针对钼渗铜产品超声波探伤进行分级的建议。

Taking molybdenum infiltrated copper(Mo-10 Cu) connecting plate used in gas rudder system as the research object, the discontinuous display phenomenon found in ultrasonic flaw detection of products was analyzed.The results show that there are micropores with a diameter of about 2~5 μm in the banded area(discontinuous display area) marked by ultrasonic flaw detection of molybdenum infiltrated copper products, which is the root cause of discontinuous display of ultrasonic flaw detection. The banded region and the non-banded region have almost the same microstructure and similar mechanical properties. Suggestions on classification of ultrasonic flaw detection for molybdenum infiltrated copper products are put forward.