freezing process
4.This paper reveals the theory of the freezing imrove-ment used in the soft soil tunnel. Besides the freezing process increases the strength of the original soil directly, the water migration and soil consolidation of the unfrozen soil in the lower temperature area abutting the frozen soil play a important role in improving the stabili-ty of the shield excavation face.
5.According to food fluidization for freezing process existing problems, a new type of food quick freezer with wave-vibration and semi-fluidization was development, it is based the working characteristic of fluidized-quick-freezer, with the lower wind speed and the higher vibrant intensity, which realizes individually quick frozen, it is can not only improve freezing characteristic highly but also reduce the operating cost. the quality of the food was also improved.
10.The social significance and development situation of FCP was described, the basic principle of present FCP processes and process methods was analyzed, and their existing normal problems were discussed including: requirements for ice pattern, ice pattern making method, properties the mold shell and molding materials should have under the condition of freezing, choice of the materials and their treating process.
