The responses of overwintering larvae of the pine needle gall midge Thecodiplosis japonensis Uchida et Inouye to rapid cold hardening and cold acclimation were studied.

Laplace Transfer Methods are applied to coupled differential equations for heat and moisture transfer in half space porous materials during rapid drying process.

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.

This paper has analyzed the reasons of the brittleness of rapid solidification Al-Li alloys and introduced some main toughening methods in manufacturing,forming and heat treatment of the alloys.

The microstructure and effect of grain refining of Al-Ti-B interalloy rods prepared by the process of rapid solidification-extrasion have been investigated by means of X-ray diffrac-tion，SEM and optical microscope in this paper.

By means of rapid solidification,Al-Cu-Fe-Zn alloy powders were produced.

3Cr2W8V hot work die steel was pretreated by rapid precooling annealing process instead of traditional annealing process.