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Additive Manufacturing (3D printing) technology has become a necessary supplement to traditional additive manufacturing because of its unlimited structure, short production cycle, high density and high strength. As the core component of the through the drill pipe tool neutron compensation instrument, the pressure supply silo must integrate the neutron probe and other components in the limited space and must bear the complex loads such as high temperature (175°C), high pressure (140 MPa), tension and so on. The structure design and manufacturing process of the instrument are put forward high requirements. The Integrated Design, mechanical simulation, printing support optimization and high temperature and high pressure limit mechanical test of the pressure supply silo are studied. The integrated structure design and machining problem of the welding assembly (15 parts welding) of the pressure source cabin is solved, and the structure optimization and the mechanical properties of the material are realized. The near-shape part of the material adding technology simplifies the processing procedure, greatly reduces the cutting amount, and improves the material utilization ratio. The one-time integral forming of the curve hole simplifies the processing and assembly process. 12 samples were tested at 175°C, 140 MPa, 30 tons of maximum safety mechanics and limit mechanics simulation. The results show that the integrated design and processing technology of welding components based on additive manufacturing technology can meet the technical requirements of pressure source cabin, the problems of unstable structure and process reliability and complex machining are solved effectively, and a new feasible technical route for the integrated design and manufacture of similar welding components is opened up.
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