The high wearing resistance of the samples after hydrocooling and air cooling was partially attributed to martensite transformation and work-hardening.
Programmed cooling method: The glycerol and Dimethylsulfoxide, as cryoprotective agents, were mixed with COC1 cells suspensions at different concentration, respectively.
Through utilizing controlled cooling technique on large section bearing steel bar after rolling ,an ideal initiation structure sorbide can be attained.
With adoption of post processing of vacuum pneumatic conveying,the conveying cooling and purification of tripolycyanamide can be fulfilled at the same time,which t...