Masayoshi Ishida
,
Seiji Okabe
,
Takeshi Imamura
,
Michiro Komatsubara
材料科学技术（英文）
The dependence of transformer performance on the material properties was investigated using two laboratory-processed 0.23 mm thick grain-oriented electrical steers domain-refined with electrolytically etched grooves having different magnetic properties. The iron loss at 1.7 T, 50 Hz and the flux density at 800 A/m of material A were 0.73 W/kg and 1.89 T, respectively, and those of material B, 0.83 W/kg and 1.88 T. Model stacked and wound transformer core experiments using the tested materials exhibited performance well reflecting the material characteristics. In a three-phase stacked core with step-lap joints excited to 1.7 T, 50 Hz, the core loss, the exciting current and the noise level were 0.86 W/kg, 0.74 A and 52 dB, respectively, with material A, and 0.97 W/kg, 1.0 A and 54 dB with material B. The building factors for the core losses of the two materials were almost the same in both core configurations. The effect of higher harmonics on transformer performance was also investigated.
关键词:
吴晓松
,
兰新哲
,
赵西成
,
王碧侠
,
崔静涛
钢铁钒钛
doi:10.3969/j.issn.1004-7638.2007.02.014
介绍了二氧化钛直接还原法提取金属钛的各种工艺,包括:剑桥大学发明的FFC工艺、Ono和Suzuki提出的OS(钙热还原)工艺、Park等将EMR(电子中介反应)和MSE(融盐电解)的概念结合起来用于TiO2的金属热还原以及Okabe等提出的PRP(预制还原)工艺.并在此基础上对比分析了这些新工艺各自的特点,综述了国内有关直接还原法提取金属钛的研究进展,指出二氧化钛直接还原法提取金属钛工艺最有希望取代传统的Kroll法.
关键词:
金属钛
,
直接还原法
,
TiO2
,
FFC法
,
OS法
,
EMR/SME工艺
,
PRP工艺
王碧侠
,
兰新哲
,
赵西成
,
吴晓松
稀有金属
doi:10.3969/j.issn.0258-7076.2006.05.021
镁热还原法(Kroll法)是实现工业化的海绵钛生产方法, 由于此法工艺流程长, 过程复杂而使得钛的生产成本居高不下, 严重影响了钛的应用, 因此有必要开发新的钛制取方法. 近年来由二氧化钛直接还原制取金属钛的工艺引起了研究者的广泛兴趣, 尤其是剑桥大学发明的FFC工艺在国际上掀起了新的钛还原工艺研究热潮, 随后Ono 和Suzuki提出了OS(钙热还原)工艺;Park等将EMR(电子中介反应)和MSE(融盐电解)的概念结合起来用于TiO2的金属热还原;Okabe等提出了PRP(预制还原)工艺. 介绍这几种二氧化钛直接还原的新工艺并对比分析了各自特点和发展趋势, 指出FFC工艺最有希望取代传统的Kroll法.
关键词:
钛
,
二氧化钛
,
FCC剑桥工艺
,
OS(钙热还原)EMR(电子中介反应)
,
PRP(预制还原)
