Acta Metallurgica Sinica (English Letters) ›› 1999, Vol. 12 ›› Issue (5): 907-910.

• Research paper • Previous Articles     Next Articles

STUDY ON NODULE RATIO AND COMPACTED GRAPHITE RATIO OF IRON FLUID TREATED BY RARE EARTH MAGNESIUM ALLOY QUICKLY EXAMINED BY CONCENTRATED DIFFERENCE FIXING OXYGEN

L.X.Ding and Y.M.Wang Department of material, School of Mechanical Engineering, Shenyang University, Shenyang 110044, China   

  • Received:1999-10-25 Revised:1999-10-25 Online:1999-10-25 Published:2009-10-10

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Abstract: The article uses the method of regression statistics to obtain the regression formula of iron fluid nodule ratio Q and compacted graphite ratio R, through rare earth magnesium treatment. At the same time it has given thejudging figure of Q and R, considering oxygen activity and temperature. When using oxygen activity to judgenodule ratio and compacted graphite ratio of the ironfluid treated by rare earth magnesium alloy, its limit value changes with the change of temperature.

Key words: nodule ratio, compacted graphite ratio, oxygen activity, oxygen concentration detector

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