High-temperature forming device for imperfect single-crystal wafers used for neutron monochromator

A high-temperature forming device for imperfect single-crystal wafers used for a neutron monochromator, the device comprising:

• a heating electric furnace having a furnace mouth facing downwards, and capable of being lifted vertically or having a hearth capable of being opened and closed,
• a temperature control system including a thermocouple and a temperature controller configured for controlling a temperature of a workpiece based on the thermocouple,
• a die system including an upper die, a middle die, a lower die, a die base, and a guide column which are all arranged in a glass cover and are configured for manufacturing the workpiece, wherein, the upper die is fixed to the die base, the middle die and the lower die are able to be moved up and down, and positioning of the middle die and the lower die is achieved through the guide column fixed to the die base,
• a loading system in a hydraulic or pneumatic loading mode configured for loading the middle die and the lower die,
• a vacuum protection system including
• the glass cover, a vacuum pump, a vacuum gauge, a joint, a blocking flange, and a pipeline, wherein:
• a body of the glass cover is shaped as a cylinder,
• one end of the body is closed,
• a through hole is formed in an other end of the body,
• the glass cover is vertically placed,
• the other end with the through hole faces downwards and is located in a water-cooled jacket box of an operation table,
• the water-cooled jacket box is configurable such that a liquid level in the water-cooled jacket box is higher than an end face of the other end with the through hole of the glass cover,
• an operation opening is formed in a cylindrical surface of the glass cover and provided with a glove made of an airtight material, and
• the glove and the glass cover are sealed via a flange and glue,
• the other end with the through hole of the glass cover is supported by a glass cover supporting plate, which is capable of moving up and down in a vertical direction, and
• the pipeline is connected with the vacuum pump and the glass cover, one end of the pipeline communicates with an inner cavity of the glass cover through the joint, an other end of the pipeline is connected with the vacuum gauge and the vacuum pump, and
• an auxiliary system including a heat insulation pad, a storage rack, and a protection layer, wherein:
• the heat insulation pad is arranged above the blocking flange, and a taking-out opening is formed in the heat insulation pad,
• the storage rack is located between the heat insulation pad and the blocking flange, and positions of the heat insulation pad, the storage rack, and the blocking flange are fixed with respect to one another, and
• the protection layer is of a composite structure and comprises a heat insulation layer and a heat dissipation layer, and the protection layer wraps the operation opening of the glass cover and a partial shell below the operation opening of the glass cover to prevent the glove from being affected by the heating electric furnace.