30results about How to "Effective control of welding deformation" patented technology

The invention relates to a deep U-shaped rotary section semi-closed flame tube assembly welding processing method, which belongs to the technical field of aero-engine processing. The method includes firstly using the inner wall component welding jig to assemble and weld the middle section of the flame tube inner ring, the rear section of the flame tube inner ring and the rear mounting edge of the flame tube inner ring as the inner wall component, and then heat treatment for the first time; secondly, use the front wall component welding jig to assemble and weld The front wall of the flame tube and the front part of the inner ring of the flame tube are the front wall assembly, and then the second heat treatment is performed. Use the inner wall-front wall assembly welding fixture to assemble and weld the inner wall assembly and the front wall assembly, and then perform the third heat treatment; assemble the flame again The outer ring of the tube and the outer ring of the flame tube are installed, and then the assembly is welded with the assembly welding jig, and then the fourth heat treatment is performed with the heat treatment jig; finally, the end face is turned with the turning jig. The method has the advantages of small processing difficulty, convenient operation and reliable quality.

The invention provides a blade replacement and repair method for stator blade assemblies of gas compressors, and belongs to the technical field of component repair of aero-engines. The blade replacement and repair method comprises the steps of 1, disassembling a sealing plate; 2, removing a copper-aluminum coating at the installation part of an outer ring through a sand blowing method; 3, removing a faulted blade through an electric spark forming and machining method and eliminating oxidation films on the inner surface of a forming hole and on the ambient surface of the forming hole; 4, assembling a new blade in the forming hole, inserting the blade into the forming hole from a forming hole in one side of the outer ring, enabling the tail of the blade to be assembled into a forming hole of an inner ring, welding the blade to the inner ring and the outer ring through the spot welding method after the size meets the requirement and coating the to-be-welded head part of the newly-installed blade with brazing filler metal along the peripheries of the forming holes; 5, placing a to-be-welded assembly and a brazing clamp into a vacuum furnace for brazing; 6, after brazing is qualified, recovering the structure according to the heat treatment process of the blade, re-spraying a coating at the installation part of the outer ring according to the technology requirement after heat treatment and re-installing a sealing plate for the assemblies.

The invention discloses a manufacturing method of a fence structural component of a high-strength launching silo. The manufacturing method comprises the steps that firstly, a first anti-deformation supporting tool and a second anti-deformation supporting tool are welded along the inner wall of a barrel; then a buffer bracket is correspondingly assembled on one side of the barrel and a releasing-tensioning device mounting seat is correspondingly assembled on the other side of the barrel; channel steel tools are arranged on the outer sides of the buffer bracket and the releasing-tensioning device mounting seat; the buffer bracket and the releasing-tensioning device mounting seat and the barrel are welded; then a guide cylinder mounting seat, a bearing pedestal mounting seat plate, a buffer bracket web plate and various types of rib plates are sequentially welded and locked; subsequently, a cover-opened-in-place stop block is welded and a guide cylinder mounting panel is locked sequentially; and finally the first anti-deformation supporting tool and the second anti-deformation supporting tool are cut out and the inner circle of the barrel is subjected to overlay welding. Through the design, welding deformation of the fence structural component can be effectively controlled and the welding accessibility is ensured.

The invention discloses a segmented division and installation method of oversized and ultra-wide double-spliced composite I-shaped steel beams. According to the segmented division and installation method, Tekla steel structure modeling software is adopted to establish a three-dimensional visual model of a complex form; and through a BIM model and on the basis of combination of previous segmented division of the oversized and ultra-wide double-spliced composite I-shaped steel, additional arrangement of reinforcement plates is put forward creatively, and thus the problems that as for long-distance transportation of ultra-wide I-shaped steel, the segmented installation positioning difficulty is high, and the temporary reinforcement measure input is high are effectively solved. According to the segmented division and installation method, operability is high, the installation efficiency is high, welding deformation of a steel structure is effectively controlled, and the welding quality is ensured; and meanwhile, complex components between the pieces of double-spliced composite I-shaped steel are manufactured in a combined mode, the detailed installation process is determined, the construction efficiency of the steel structure is substantially improved, and economic benefits are improved.