The rapid vacuum cooling technology reduced the degree of heat spoilage effectively, and the perforated electrode/cold liquid technology prevented fouling on the electrode and inner wall, enhanced the continuity of operation.

Fast cooling and ultra fast cooling experiments have been carried out on a Nb micro-alloyed steels.

It showed that a fast cooling after drawing was of benefit to dimensional stability, straightness, environmental stress cracking resistance, and strength of the drawn tubes.

When leakage occurs in the high pressure heater and the power unit is forced to shutdown for repair,fast cooling should be carried out by controlling outlet water from the dearator tank utilized with the level difference between the deaerator tank and the HP heater.

Influence of rapid cooling and diffusion annealing on Sn-Bi-X solder;

The experiments have been carried out to carefully investigate precipitation of cemenhte from pure iron during rapid cooling.

in this paper,large section bearing steel bars are carried out the rapid cooling in the water coolers of turbulent tubes.

The characteristics of the precipitates in microstructures during accelerating cooling and continuous hot rolling process were analyzed,and the size,distribution and quantities of the particles such as TiS and Ti_4C_2S_2 etc.

The testing of producing 10～18mm gauges plate with recrystallization controlled rolling and accelerating cooling technology was simply introduced.

A lot of cracks and voids are generated in the brazing joint using quick cooling method,which decrease the strength greatly.