Glaze spraying is a key process in ceramic production, yet how to make the glaze coating uniform in various situations is a rather confusing issue. We have to set up different models at different times. If we can find a relatively universal strategy, much time can be saved.

In this paper, we adopt elliptic double β distribution model to obtain the thickness cumulative model on planes and solve Issue 1. Then we modify the basic model to make it applicable when dealing with curved surfaces and spheres. In this way, we deal with Issue 2 and 3 successfully.

As any free-form curved surface can be regarded as a superposition of several basic ruled curved surfaces, combinatorial use of piece-wise approximation and superstition can perfectly generalize our solution above, as shown in Issue 4.

We use MATLAB simulation to find the optimal solution. Sensitivity analysis of spray thickness and spray gun height is also made.