1. In view of the key technical problems of high-speed and precise cold plastic continuous forming and jointing of straight seamless steel pipe with high strength and thick wall, the cold plastic forming process method and software of straight seam steel pipe are invented, which breaks through key technologies such as the main structure of heavy forming machine, virtual six-cylinder synchronous control of spindle, automatic deflection compensation and digital jointing. Developed 65000kN heavy CNC forming and 13-axis electro-hydraulic servo NUMERICAL control jointing technology and complete sets of equipment, realized high strength precision seamless tube nonlinear continuous forming and real-time closed loop continuous jointing under high load.
2, in view of the high precision seamless steel tube with high quality and efficiency in advance – fine welding manufacturing technology and equipment in the domestic blank, deep submergence arc process method is put forward, invented the anti splatter adhesion high current MAG welding torch, reveals the essence of submerged arc welding arc of molten pool more ac/dc electromagnetic interference coupling rule, the study found that the mechanical oscillation and ac/dc strong magnetic steel cantilever oscillation interaction rules, Precision seamless pipe has developed high speed MAG pre-welding for steel pipe pre-welding manufacturing, straight seam submerged arc finishing welding (four wire inner welding and five wire outer welding), spiral seam inner/outer submerged arc finishing welding series complete set of technology and equipment line, realizing digital high strength precision seamless pipe full closed-loop high-speed MAG pre-welding and high quality and high efficiency submerged arc finishing welding.
1. Using the three-dimensional space simulation module, according to the relationship between the curved surface and the axis of the building provided by the original design drawings, establish the three-dimensional coordinate system of the curved surface, draw the three-dimensional structure diagram of the double curvature arc roof, and the three-dimensional structure diagram of the arc roof.
2, according to the load calculation to determine the roof construction of steel pipe scaffolding pole spacing and steel pipe scaffolding horizontal rod step distance, in the three-dimensional structure diagram of steel pipe scaffolding simulation positioning, steel pipe scaffolding reservation.
3. The intersection point of steel tube scaffold vertical rod and horizontal rod of steel tube scaffold is generated on the hyperboloid to generate plane projection network precision seamless tube lattice line, and the plan projection of steel tube scaffold is generated grid line.
4. Calculate the elevation of points on the hyperboloid corresponding to each grid node in the horizontal projection plane coordinate system.
5. Record the three-dimensional coordinates of all intersections and grid point spacing and other parameters.
Post time: Jan-10-2022