Based on the properties of the precise profiled titanium wire that the dimension is small,high accuracy and the requirements of its inner and surface!quality are very high,the article aims to study on preparation of metallographic sample,the way of chemical erosion and aspects needed to pay attention to.

Effect of Oscillation Field on Polymer Melt Flow in Extrusion Die of Profile;

Design of Extrusion Die for PA66 Heat Insulating Profile for Window;

Numerical Simulation of the Melt Flow Characteristics in Coextrusion Runner of the Steel/Plastic Composite Profile;

The application of infrared spectrograph to the production of PVC profiles;

Two problems concerning the plastification quality of PVC profiles;

The article has described toughening mechanism of nanometer CaCO3, Application of nanometer CaCO3 in PVC profiles and compared with conventional particle CaCO3 in PVC profiles.

The stress characteristic of the main working methods for processing the special-shaped wire,such as drawing,driven roller die and rolling was analyzed.

It is very conspicuous that the effect of drawing plastic deformation metal wire with roller die is better,but some broken wires often appear when it is used for drawing wire,especially special-shaped wire of low plastic deformation metal.

In this paper,the level continuous casting technologies of leaded nickel silver , the working ways from round casting stick to special-shaped wire and its crystal structure and mechanical performance were studied.