Sheet metal forming simulation using special software simulation abnormity metal pot pressure bulging process.

Spherical metal tank is measured by light tangent method,and the uncertainty of measurement results is calculated by analysing the centre distance,horizontal angle and left and right tangent distance to the top etc.

Reasonably defining reinforcing rings for metal tanks is important in avoiding less stability of tank shells so as to guarantee safe operation.

With actual examples utilizing project hydraulic pressure propping-up technique, this paper explains the principle of hydraulic pressure propping-up using metal cans, the composition of the system, points should be paid attention to when deciding the com-penent s parameters, and the advantage of the hydraulic pressure propping-up technique and also the direction of its improvement.

Analysis on Corrosion Destroy of Metal Tank and Preventive Method;