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森吉米尔轧机用轧辊开坯锻造工艺数值模拟
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作者 吕原江 李一帆 +4 位作者 帅美荣 王建梅 苗建军 李保平 张来新 《中国重型装备》 2025年第1期6-10,共5页
为解决冷轧辊开坯锻造应变不均匀,提升轧辊致密度与组织均匀性,采用有限元模拟软件,通过设定不同进给量(380、330、280 mm),研究H13钢冷轧辊锻造区和接砧区等效应变分布规律,以及中心孔洞缺陷闭合情况;通过在相邻锻造道次设定不同错砧量... 为解决冷轧辊开坯锻造应变不均匀,提升轧辊致密度与组织均匀性,采用有限元模拟软件,通过设定不同进给量(380、330、280 mm),研究H13钢冷轧辊锻造区和接砧区等效应变分布规律,以及中心孔洞缺陷闭合情况;通过在相邻锻造道次设定不同错砧量,研究坯料任意横断面上的应变梯度及沿中心轴线上的应变分布。结果表明:不同送进量下,等效应变分布呈现相同变化趋势,轧辊表面等效应变较大的区域出现在接砧区,而心部应变较大区域则出现在锻造区;当送进量为280 mm时,且气孔心部与外缘的相对密度非常接近,约为0.96~0.97。坯料经过两道次锻造拔长,且相邻道次错砧量为0.5 L时,坯料中心等效应变趋于均匀。 展开更多
关键词 冷轧辊 送进量 相对密度 错砧量
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Corrosion Resistance of Titanium Bipolar Plate Enhanced by TiN Film
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作者 Deng Zhenzhen Dai Zhengfei +6 位作者 Wu Weibo Lai Ruisi Feng Qing Jia Bo Wang Chen lv yuanjiang Ma Fei 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2024年第10期2755-2765,共11页
To improve the corrosion resistance of titanium(Ti)bipolar plate,titanium nitride(TiN)film was prepared on the surface of commercial TA1 pure titanium by magnetron reactive sputtering and pulse laser deposition(PLD)te... To improve the corrosion resistance of titanium(Ti)bipolar plate,titanium nitride(TiN)film was prepared on the surface of commercial TA1 pure titanium by magnetron reactive sputtering and pulse laser deposition(PLD)techniques,and the film prepared under different process parameters were evaluated.Results show that dense and complete TiN film can be obtained on TA1 surface under different preparation processes,and the corrosion current density of Ti substrate significantly increases.However,the composition of the film prepared by magnetron reactive sputtering is affected by the oxygen competition reaction,and its homogeneity is inferior to that of the film prepared by PLD.The comprehensive performance of the PLD-prepared film shows excellent characteristics in the terms of low corrosion current density(0.025μA·cm^(−2)),moderate corrosion overpotential(−0.106 V),and good hydrophobicity. 展开更多
关键词 proton exchange membrane water electrolyzer bipolar plate process parameter TiN film corrosion resistance
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