2results about How to "Save manufacturing time" patented technology

The application discloses a kind of inclined arrangement tube bundle support strip expansion device and pipe penetrating method of pressurized water reactor passive residual heat removal heat exchanger, the device includes expansion pin, expansion screw, positioning groove plate, nylon top wire and butterfly nut, wherein, positioning groove plate can be fixed in tube bundle support strip expansion pin, by pre-tightening butterfly nut, the expansion screw inside expansion pin moves along the taper hole section inside expansion pin, so that the front end of expansion section is expanded, and the gap L between two adjacent tube bundle support strips is expanded;When the gap L between two tube bundle support strips is reduced after welding with the toothed plate, the installation sequence of the device can be set according to the pipe penetrating sequence, and the gap L between tube bundle support strips is expanded;In the process of expansion, expansion pin does not rub with the semicircular groove of support strip, and does not scratch tube bundle support strip, to ensure the pipe penetrating effect of heat exchange tube.

This invention relates to a support structure for additive manufacturing of elliptical thin-walled compartment sections, belonging to the field of additive manufacturing technology for thin-walled compartment sections. Addressing the challenges of shape control in additive manufacturing and post-processing of elliptical thin-walled compartment sections, this invention proposes a multi-layered support structure design. This support structure employs a combination of a cylindrical internal support structure, ribs, and thin-plate supports, providing layered internal support and shaping for the elliptical thin-walled compartment section. This transforms the unstable elliptical cross-sectional structure into a stable approximately circular, triangular, or rhomboid cross-sectional structure, ensuring the support structure's stability and enabling effective control of deformation during additive manufacturing and post-processing of the elliptical thin-walled compartment, thereby improving the overall efficiency of additive manufacturing.