Based on the establishment of the model for one-dimensional mechanical compression under variable pressure and reasonable assumptions,and combined with the seepage theory,the equation of one-dimensional compression under variable pressure was deduced.

On the basis of analyzing the change diameter screw compression process in detail,a new method,in which the change diameter screw compression was treated as a two-dimensional cylinder compression under variable pressure,was put forward.

The design of variable pressure mechanical seal is studied.

Analysis and design of main transformer of arc welding inverter;

Design of medium frequency transformer of arc welding inverter;

Selection of welding filling material formain transformer oil tank cover of type DJ_1 locomotives;

Application of radial basis function network in variable blank holding force identification;

A new device of variable blank holding force;

The study on the prediction technology of variable blank holding force in the formin.

Effect of technological parameters on filling behavior of semi-solid A356 alloy by rheocasting;

Using the independently developed thin plate sample with five steps and rheocasting mould,a new rheoforming processing of A356 alloy with slurry preparation systems and component shaping systems apart is experimentally exploited.

Oxygen-rich Air Continuous Shaped Coal Gasification Backed by PSA for Oxygen Generation and Its Prospects;

Research and application of PSA technology;

The Applicaction of PSA in The Synthesis Ammonia Facility;