Study on Hot Crack for the Casting of Bolster and Side Bearer by Numerical Simulation;

Finite element calculation of DL6W modern tramcar bogie frame and bolster;

Analysis of the problems involved in the production of Grade B steel bolsters & side frames for railway freight cars;

Development and application of ward adjustable pillow;

In the history of China, there appeared pillows made of straw, wood, jade, porcelain, salt, amber, colored glaze, rattan, cloth and so on.

In this paper,various kinds of pillows were designed and its objective indexes such as absolute height、physical hardness、contact pressure、contact area were measured.

Applied test of perlite admixture in concrete railway sleeper;

Effect of hard spot on dynamic response of railway sleeper;

The using status and problems of woodiness railway sleeper and reinforced concrete sleeper are analyzed, and the development trend of railway sleeper materials in the world is discussed.

Improvement of B5050A slotting machines ram adjusting screw;

Taking the ram of a gantry typed machining center as an example carried out an analysis; the static and dynamic characteristics of ram were studied, and an improvement on the structure of ram was conducted.

According to the features of milling planer,it should start with such aspects as initiative-driving manner,the structure of ram,materials and the style of guide track,in order to strengthen the whole stiffness and precision of milling plane and meet customer requirements.