After soaking,most of the independently-nucleated V(C,N) tends to dissolve,and the undissolved V(C,N) starts to grow up,meanwhil.

After soaking, most of independently-nucleated V(C,N) tends to dissolve, and the rest, which is difficult to dissolve, .

Analysis of factors affecting the average heat flux of billet mould;

The influence of casting speed on the average heat flux of mould for slab continuous casting was discussed.

The affection of the carbon content on the average heat flux of mould of slab coninuous casting was discussed.

Effect of soaking time on the dissolution of microalloyed elements in high-strength steel containing Ti and Nb;

The usage of HFH furnace is given and a introduction of calculation of soaking time and purging time in HFH furnace is discussed based on HPH furnace of Baosteel.

In view of existing caculation deviation of slab temperature and controlling difficult of acceleration point and swing stage of pit furnace,some optimization measures were applied,and good effects were abtained.

On the base of research for the heating process in the pit furnace and summing up the operation practice, this paper established a controlling model about heating steel ingot in the pit furnace by combinati0n expert system with mathematical model.

Research of temperature control system for regenerative soaking furnace;

Change of composition and structure of Al_2O_3-SiO_2 castables for soaking furnace bottom roller of the CSP system at work;

By the concrete index and using request of 1 375 ℃ high strength castable refractory, 1 204 ℃ heat insulating refractory, 1 260 ℃ heat insulating refracrory,1 09 3℃ heat insulating refractory and 1 316 ℃ Si castable, the castable refractory for CSP billet soaking furnace is researched, which is acquired the good using effect.