This paper discusses the notices in the design of fast open pressure vessel and puts forward recommendations on calculations of upper and bottom flanges and callipers and demands for draft demonstrations.

To a quick-flange of pressure vessel, using finite element analysis on the basis of Pro/E and ANSYS, drawing its stress characteristics.

The structure optimal design of quick opening set is carried out by integrating finite element method with optimal technology in this paper.

The fast open-door mechanism can make the door two-way movement.

In the process of rolling, sometimes the gap quick open because the strip is broken or other reasons, in this case and increase the use of the roll and decrease the productivity.