C.P. Chou
,
S.C. Wang
,
C.C. Chang and W.R. Wang 1) Department of Mechanical Engineering
,
National Chiao Tung University Hsinchu
,
Taiwan 300
,
China 2) Materials Research Laboratories
,
Industrial Technology Research Institute Chutung
,
Taiwan 310
,
China
金属学报(英文版)
Titanium has been widely used as the implant materials of joint prostheses. This paper simulates the microstructures of the hot forged titanium knee joint component by physical modeling. Ti-6Al-4V ELI were deformed by GLEEBLE 2000 hot deforma- tion simulator in compression mode to determine the hot workability, in the range of 900 to 1100℃, with the strain rates between 0.05 to 5 s~(-1). Test results derived from specimens processed by on-cooling test and on-heating test were compared, thereby estimating the effect due to thermal history. The forging process of Ti-6Al-4V ELI tibial base plate of knee joint prostheses was design based on the workability data obtained.
关键词:
physical modeling
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null
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null
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null
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null
董鹏莉
钢铁
doi:10.13228/j.boyuan.issn0449-749x.20150546
为研究钢包底吹孔布置对钢液混匀时间及液面波动的影响,确定钢包最优底吹工艺,以某厂210 t钢包为原型,根据相似原理建立钢包物理模型,模拟钢包底吹氩工艺。通过研究不同底吹孔位置与角度对混匀时间和液面波动的影响,确定钢包最优底吹工艺。结果表明,最优底吹位置为底吹孔位于距钢包底部圆心距离为0.60R/0.60R,夹角为100°。底吹孔在0.40R的位置,两气柱会相互影响;底吹孔在0.60R的位置是较理想的位置;底吹孔在0.79R的位置,气流对包壁冲刷严重。
关键词:
钢包
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底吹氩
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混匀时间
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物理模拟
屈天鹏
,
郭瑞琪
,
郝月莹
,
张文帝
,
袁子凯
,
王德永
钢铁研究学报
doi:10.13228/j.boyuan.issn1001-0963.20150214
连铸钢包浇注末期出现的旋涡卷渣现象会对连铸钢水质量产生重要的影响,为了有效控制生产中的旋涡卷渣现象,对钢包浇注末期旋涡的产生机理开展详细研究.依据相似原理,构建了相似比为1∶6的钢包物理模型,对钢包浇注过程中旋涡产生及卷渣过程进行研究,分析了初始液面高度、出水口尺寸与布置位置、出水口结构等因素对旋涡形成规律的影响.结果表明:旋涡形成过程与初始液面高度无关;钢包出水口尺寸和布置位置对于旋涡形成过程影响显著.随着出水口直径的增大,旋涡临界高度逐渐增加;随着偏心率的增加,旋涡临界高度逐渐降低,最佳偏心率为3/4.提出三片挡块式出水口结构,可以显著降低钢包浇注末期的旋涡临界高度,降低高度达50%左右.
关键词:
浇注钢包
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卷渣
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形成机理
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物理模拟