Preceding from mechanism of Ca-treatment of the liquid steel,the present paper analyzes the cause to the ladle nozzle blockage in casting the Ca-treated liquid steel and puts forward technical measure to improve the Ca-treatment process and as the result,the problem of the nozzle blockage is solved.

Effects of the remaining calcium amount on modification of the inclusions in the low carbon Al-killed steel after Ca-treatment are analyzed through thermodynamic calculation,and the analytical results are clarified and confirmed by both the laboratory experiments and on-site tests and thereupon the appropriate limit of the remaining calcium amount is put forward.

By implementation of Ca-treatment in the secondary refining instead of Re wire feeding into the CC mould the ratio of smooth operation in refining SM490A has been greatly raised and the elongation of the steel increased by 12% and perfect good cold bending achieved.

Development and application of calcium treatment in CC production;

Effect of calcium treatment on the cleanliness of low carbon cold heading steel;

Experimental research on the effect of calcium treatment of molten steel on inclusion properties;

Wear mechanism of MgO-MA-C slide plate for casting Ca-treated steel;

The chemical erosion mechanism of slide board in casting of Ca-treated steel is analyzed,the research situation at home and abroad about it introduced.

External inclusion can be removed from its origin and the internal can be controlled by deoxidating and Ca treatment.

This paper was designed to research the effect of Ca treatment on physiology of okubo peach fruit after harvest at rapidly or slowly two different cooling methods.

Method: 32 rats were randomly divided into 4 groups: Ischemia/Reperfusion group (I/R group), Calcium preconditioning group (CPC group), Chelerythine (a PKC inhibitor) added into CPC group (CLT group) and 5 hydroxydecanoate (5 HD, a mitochondrial K ATP channel inhibitor) added into CPC group (5 HD group).