The invention discloses a production process for a heat preservation vessel inner cavity heat-resistant glass or enamel
coating layer; the production process comprises the following steps: step S1, selecting a heat preservation vessel blank made of a
metal material, carrying out sandblasting operation on the surface of an inner cavity of the heat preservation vessel blank, and making the surface of the inner cavity of the heat preservation vessel blank form a
rough surface; step S2, carrying out enamel spraying operation on the
rough surface, to make glass or an enamel
glaze sprayed on the
rough surface of the heat preservation vessel; step S3,
drying the
glaze on the rough surface; step S4, placing the heat preservation vessel blank after
drying on a bracket; step S5, carrying out
sintering operation on the heat preservation vessel blank; and step S6, after completion of
sintering, taking the heat preservation vessel blank down from the bracket to obtain the finished product. In the process, in the preparation process of a moisturizing vessel, after a glass layer or an enamel layer is formed on the surface of the inner cavity, the self chemical properties of the glass layer or the enamel layer are relatively stable, no
corrosion condition is generated, at the same time, changes of
thermal expansion and cold contraction are relatively small, and the finished product is suitable for use as a container such as a heat preservation cup.