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前言 自第二次世界大战以来,船舶螺旋桨用材料的发展十分迅速。镍铝青铜、高锰铝青铜是当今船舶螺旋桨材料中用量最大的两类。五十年代末,随着对潜艇隐蔽性能的提高和船舶航速的增加,螺旋桨用低噪音材料和抗空泡破坏材料相继问世。我国自七十年代中期以来也开始了对具有优异抗空泡破坏性能的铜铝铍系铸造合金及应用进行了一系列的研究,并制造了数十只螺旋桨用于艇队。多年来的实际使用证明,添加某些其他适量元素的铜铝铍铸造合金,是一种理想的抗空蚀性破坏材料。
Foreword Since the Second World War, the development of ship propeller materials has been very rapid. Nickel-aluminum bronze, high-manganese bronze are the two most widely used propeller materials in ships today. In the late fifties, with the improvement of submarine concealment performance and the increase of ship speed, propeller materials with low noise and anti-cavitation destroy materials came out one after another. Since the mid-1970s, China has also started a series of studies on the applications and applications of Cu-Al beryllium alloy with excellent anti-cavitation destruction performance and manufactured dozens of propellers for boats. Years of practical use has proved that the addition of some other appropriate elements of copper, aluminum and beryllium casting alloys, is an ideal anti-cavitation damage materials.