型船用大功率柴油机机带海水冷却泵轴，率先采用贵府为1Cr17Ni2钢，该钢经调质管制后，抗拉强度≥860 MPa,但在握役时代彩票游戏app平台，该轴多次产生了断裂失效事故。经贵府分解比照后采用了Incoloy925高温镍基合金制造柴油机机带海水冷却泵

效果标明，经固溶+两次时效管制后，Incoloy925合金抗拉强度≥965 MPa,经装船1000 h实验后，Incoloy925合金海水冷却泵轴各项功能主义均满足计较条目，在未产生断裂失效问题。

Failure analysis of seawater pump shaft and application of Incoloy 925 alloy in marine diesel engines

The high-power marine diesel engine with seawater cooling pump shaft was originally made of 1Cr17Ni2 steel. After quenching and tempering, the steel had a tensile strength of ≥ 860 MPa.

However, during service, the shaft experienced multiple fracture failure accidents. After material analysis and comparison, Incoloy925 high-temperature nickel based alloy was selected to make the diesel engine with seawater cooling pump shaft.

随着国内对高详细功能、低老本高温耐蚀合金家具需求量的添加，且重要部位用材依赖入口，为开拓满足船用、海底挖掘等严苛环境欺骗的贵府，本文经由对Incoloy 925合金的化学因素、家具功能主义、安排滚动等进行分解，系统酌量了Incoloy 925合金轧制棒材的锻练及加热工工艺，并对其详细功能进行西宾，得胜坐褥

出满足欺骗条目的棒材，为该合金在其他管事的践诺欺骗提供技能根柢。

Research on the Process of Incoloy 925 Alloy for Marine Use With the increasing demand for high comprehensive performance, low-cost high-temperature corrosion-resistant alloy products in China, and the dependence on imported materials for key parts,

in order to develop materials that meet harsh environments such as marine and seabed mining, this article systematically studies the smelting and heating process of Incoloy 925 alloy rolled bars by analyzing the chemical composition,

product performance indicators, and microstructure transformation of Incoloy 925 alloy. Its comprehensive performance is tested彩票游戏app平台, and successfully produces bars that meet usage requirements, providing a technical basis for the promotion and application of this alloy in other industries.