Acta Metallurgica Sinica
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ISSN 0412-1961
CN 21-1139/TG
Started in 1956
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, Volume 3 Issue 4
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ИССЛЕДОВАНИЕ УМЕНЬШЕНИЯ ВРЕДНОЙ СЕΓРЕΓАЦИИ В СЛИТКАХ КИЛЯЩЕЙ СТАЛИ ПРИ ПРОДУВКЕ КИСЛОРОДОМ ИЛИ СЖАТЫМ ВОЗДУХОМ И ПРИ ДОБАВКЕ СТАЛЬНЫ
Шао Сян-хуа;Ху Вэнь-гань;Пуан Юе-чжу Аньщаньскц(?) Мемаддурецческц(?) Комбцнам
Acta Metall Sin, 1958,
3
(4): 276-289.
Abstract
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(5839KB) (
663
)
~~
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ТЕПЛООБМЕН ИЗЛУЧЕНИЕМ В ПЛАМЕННОЙ ЛЕЧИ
Жень Ши-цзэнь Северо-восмочнь(?) подцмехнцческц(?) цнсмцмум
Acta Metall Sin, 1958,
3
(4): 290-299.
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(858KB) (
415
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~~
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PROPERTIES OF IRON-GRAPHITE POROUS BEARINGS
HUANG YUNG-SHU AND WU TZU-LIANG Institute of Metallurgy and Ceramics;Academia Sinica
Acta Metall Sin, 1958,
3
(4): 300-305.
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689
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The antiseizure property of the iron-graphite porous bearings can be improved by using purer grades of iron powder.A grade of iron powder of>98% Fe,processed by the reduction of rimmedsteel mill scale with charcoal,is found to be suitable for this purpose.Bearings made of a coarsegrade iron powder(~80%>0.06mm)and containing~1.5% graphite give a good combinationof mechanical strength and antifriction properties.When the graphite content is lower than 0.5%,excessive free ferrite in the matrix results seizure between the rubbings surfaces.On the other hand,with the graphite content in excess of 3.0%,voluminous free carbide in the matrix induces heavymechanical wear.In comparison with the bronze-graphite porous bearings of the same hardness,an iron-graphite porous bearing possesses a higher strength,a larger oil content,a smaller coefficientof friction and less wear loss.
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О ФОРМЕ ЗОНЫ ПРИЛИПАНИЯ
Сун шуы-иуь уханьскц(?) Мемаддурецческц(?) комбцнам
Acta Metall Sin, 1958,
3
(4): 306-313.
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(3392KB) (
513
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~~
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