Multi-port millimeter wave bent rectangular waveguide array body integrated whole manufacturing method

Abstract

The invention relates to the field of millimeter wave bent rectangular waveguides, and discloses a multi-port millimeter wave bent rectangular waveguide array body integrated whole manufacturing method. The method comprises the steps of: manufacturing a shape die of a waveguide array body and a water-solubility core forming die at a waveguide inner cavity; preparing a water-solubility core in thewaveguide inner cavity; obtaining an integrated compressing piece by employing the water-solubility core and the shape die; dissolving the water-solubility core in the waveguide inner cavity; assembling modules; preparing fire-resistant mixture; performing vacuum vibration and grouting to prepare a casted mold; performing calcinations for the casted mold; smelting a molten metal, and performing pressure maintaining, crystallization and solidification; performing sand removal, shaping and thermal treatment; performing liquid state polishing treatment for the waveguide inner cavity; and removingthe excess metal at the flange installation end face of the waveguide array body, and performing chemical treatment for the inner and outer surfaces of the waveguide array body. The products with thesmooth surfaces and the accurate sizes and capable of meeting the assembling precision requirements and the waveguide transmission performances are prepared by employing the method, and has the percent of pass up to 80%.

Description

technical field [0001] The invention relates to the field of millimeter-wave curved rectangular waveguides, in particular to an integrated manufacturing method for a multi-port millimeter-wave curved rectangular waveguide array body. Background technique [0002] The millimeter-wave rectangular waveguide requires closed transmission due to the high frequency of microwave transmission, and has high requirements for manufacturing precision and inner cavity roughness. Moreover, the array has multiple external waveguide ports, and the position accuracy requirements between the ports are very strict. The traditional process method of a single millimeter-wave rectangular bending waveguide generally uses a tooling mold to bend the waveguide section, and the end flange is formed into a whole by manual brazing. For the multi-waveguide array integrated structure, this process method is no longer applicable. If the whole is disassembled for machining and screwed with fasteners, the sea...

AI Technical Summary

Problems solved by technology

If the whole is disassembled for machining and screwed with fasteners, it will not be able to achieve sealing, and there will be a risk of energy overflow, and it will not meet the sealing requirements when used outdoors

If the method of dismantling, machining and welding into one body is adopted, the solder will enter the inner cavity of the waveguide and affect the transmission, the parts are thin-walled and easily deformed by welding, the dimensional accuracy cannot meet the use requirements, and the pass rate is less than 20%.

The multi-port millimeter-wave rectangular curved waveguide array is produced by traditional technology, which cannot meet the requirements of cavity size accuracy, cavity roughness, and sealing, and cannot meet the design electrical performance requirements

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