Provided is a preparation technology of a stainless steel-based plate coated with
constantan foil for a
pressure sensor. A glue solution is printed on the surface of stainless steel after surface treatment is carried out by adopting a
screen printing machine, the thickness of a
glue line is 60-85 micrometers, and after
screen printing is completed,
drying is carried out; lastly, a surface dry
coating stainless steel surface is covered with
constantan foil, and a mirror surface steel plate covers the stainless steel surface, then the stainless steel surface covered with the
constantan foil andthe mirror surface steel plate is placed into a vacuum
hot press machine for
hot pressing, after
hot pressing is completed, the temperature is reduced to a
room temperature, and the stainless steel-based plate coated with the constantan foil is obtained. The prepared stainless steel-based plate coated with the constantan foil has very low deformability, higher heat
conductivity and
dielectric strength, a constantan foil shiny side and the stainless steel-based plate have very high
bonding strength, the highest
bonding strength reaches 2.1 newtons per
millimeter, and the stainless steel-based plate coated with the constantan foil has very
high heat-resisting stress and other properties. According to the preparation technology of the stainless steel-based plate coated with the constantan foil for the
pressure sensor, the constantan foil for preparing the stainless steel-based plate coated with the constantan foil is made into a circuit by
etching, an integrated electronic device can be made into the
pressure sensor, so the stainless steel-based plate coated with the constantan foil is a pressure sensor special mother board.