(1) the heat treatment furnace must meet the requirements of the specification, and the temperature in the furnace is uniform and accurate. The flame wall shall be set in the flame nozzle of the furnace wall, and the flame shall not be directly exposed to or close to the heat treatment part.
(2) when the large pressure vessel enters the furnace, a temporary support cushion shall be added, depending on the specific size of the container.
(3) the shell with larger diameter and thinner thickness should be strengthened internally.
(4) prefabricated pressure vessels shall be reinforced on the segmented ports.
(5) the pressure vessel components which are liable to lose stability at high temperature shall be strengthened and strengthened according to the specific conditions.