Necking-down Growth and Stress Analysis for 300 mm CZ Silicon Single Crystals;

Also,a thin\|wall tube necking in conical die is a.

Combined with practical engineering experiences,the author introduces the basic principle of reflection method,illustrates the basis to valuate integrate pile,necking,tube diameter expansion,segregation,breakup and interlayer with reflection method,and discusses relevant problems should be noticed in on-site testing,in order to offer reliable reference for design and construction acceptance.

According to the properties of short circuit transfer in CO2 welding,the short circuit detecting circuit,which including primary short circuit detecting and liquid bridge pinch detecting circuit is designed on the basis of voltage comparer,differential circuit and digital circuit.

Experiment study of spinning spindleless roller's journal reduction spinning force;