The technique has not been mature in our country where the antisepsis classifications at sutures constructed by heat-shrinkage belt (cover) and liquid epoxy coating plus heat-shrinkage belt (cover) cannot reach that of 3PE antisepsis, it is difficult to ensure uniform warm-up temperature on buried steel big pipelines by common suture process.

This article recommend the application on supplement technology which is used to classification and desliming prosess flowsheet.

A parametric method to design addendum surface for automotive panel;

The algorithm is suitable to generate additional surface such as the fill-hole surface,the smooth surface of the automotive panel contour,the addendum surface and so on.

Besides,the authors described how to fast and accurately create the addendum and blankholder as well,and take some examples to explain the validity of the assistant node scheme on making die-face.