36results about How to "Meet the requirements of design drawings" patented technology

The invention belongs to the technical field of 0Cr17Ni4Cu4Nb material forming, and particularly relates to a 0Cr17Ni4Cu4Nb multi-way pipe forming method and a sidewall flanging die employed by the same. The problem that such a part cannot be integrally formed, and is required to be welded after being separately formed is solved; the fatigue resistance of the part is greatly improved. The method specifically comprises the following steps of adopting a plate as an original blank; machining the original blank into a barrel-shaped blank; pre-bulging the bottom and the sidewall of the barrel-shaped blank; forming holes in the bottom of the barrel-shaped blank, and forming holes in the middle part of the sidewall of the barrel-shaped blank; flanging the bottom of the blank; flanging the sidewall of the blank by adopting the sidewall flanging die; removing allowance. The sidewall flanging die comprises a die core, a male die set, a female die, a positioning sleeve, a guide sleeve, an outer sleeve and a lower template.

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 rolling formation method of a large and medium high-temperature alloy hollow disc-shaped forge piece, which comprises the following steps of: upsetting, compressing and punching a high-temperature alloy rod material into a hollow disc blank; putting the disc blank into a rolling machine to roll; rolling the disc blank for 20s to enable the disc blank to widen at a speed of 9-11mm / s under 4000-4900KN of an axial rolling force at an axial feeding speed of 1.6mm / s; rolling the disc blank for 20-40s to enable the disc blank to widen at a speed of 7-9mm / s under 3000-3500KN of an axial rolling force and 3000-4000KN of a radial rolling force at an axial feeding speed of 0.7mm / s; rolling the disc blank for 40-80s to enable the disc blank to widen at a speed of 4-7mm / s under an axial rolling force of 2500-3000KN and a radial rolling force of 2000-3000KN at an axial feeding speed of 0.5mm / s; and carrying out fire rolling to prepare the hollow disc-shaped forge piece. The method is mainly used for rolling disc-shaped forge pieces with excellent shapes, sizes, textures and performances.