Through analyzing the applied conditions and ways of equation p = pJ-K1Q2 and p= KQ2

the application of two formulas and ways using the Excel to draw the electronic tables and diagram images automatically and quickly were described.The p-Qparabolic diagram substituted for traditional p-Q2 linear diagram

called p-Q Technology

was introduced.Compared to the p-Q2 diagram

the p-Q diagram can reflect the function relationship more clearly and truly.Through some special methods in using Excel

a large amount of data can be obtained.The simulation of molding test on p-Qdiagram by adding four straight lines

vmax

vmin

tmaxand tmin was performed

which could form an optimal technological block diagram and get the actual formulas:p =pJ-K1Q2 and p= KQ2 through finding the spot（Q

p）as boundary conditions from the time-stroke-pressure curve diagram on the machine tool screen

building the p-Q diagram to verify the reliability of die casting technology before formal production and so on.