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 relates to a method for transposition forming of one end of a bar of a motor and belongs to the technical field of motors. The method comprises the following steps of 1. wire arrangement, in which (1) upper-layer bar copper wires and lower-layer bar copper wires are separately placed on a platform and (2) a wire arrangement board is fixed on the surface of a worktable and the arranged copper wires are fixed by a wire arrangement fixture; 2. pressure bending, in which a hydraulic pressure bending mode is adopted to bend the copper wires; 3 combining, in which the bent copper wires undergo transposition, gaskets and rows of the copper wires are insulated when the bar is combined, the middle pitch is processed to the preset standard, and the positions of transposition at both sides are beat out; 4. forming, in which the bar is placed into an upper forming die and a lower forming die, an iron core section part is beat out and is firmly fixed in a sizing die by the back of a wedge block, an end corner R is subject to simmer bending, then a leading wire R is subject to simmer bending, and the bar is beat out to be attached to the forming dies; and 5. colloidization among strands, in which the bar is placed into a colloidization model for colloidization molding to finish the transposition forming of one end of the bar. The method has the advantages of simple process, good bar effect, flat appearance, small gross weight of a motor, high efficiency and so on.

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 roll forming method of a large and medium structural steel solid disk forging, which comprises the following steps of: firstly upsetting structural steel bar materials, profiling into a solid disk blank; and rolling the disk blank in a rolling machine. When rolling within 60s, expanding the disk blank at a speed of 5-12mm / s under a 4500-4900KN axial rolling force with anaxial feed speed of 1.5mm / s; when rolling in the time range of 60-100s, expanding the disk blank at a speed of 3-10mm / s under a 3000-3900KN axial rolling force with an axial feed speed of 1.2mm / s; and when rolling in the time range of 100-120s, expanding the disk blank at a speed of 2-6mm / s under a 2000-3000KN axial rolling force with an axial feed speed of 0.8mm / s, and finally rolling into the solid disk forging on one-grade fire. The method is mainly used for rolling the disk forging with excellent shape, dimension, organization and performance.

The invention discloses a rolling forming method of a large and medium-sized high-temperature alloy solid disk-shaped forging. Firstly, the high-temperature alloy bar is upset and pressed into a solid disk blank, and then the disk blank is put into a rolling machine for rolling. Within 20s of rolling, the disk blank is widened at a speed of 9mm / s~11mm / s at an axial feed rate of 1.6mm / s and an axial rolling force of 4000~4900KN; within 20~40s of rolling, With an axial feed speed of 0.7mm / s and an axial rolling force of 3000-3500KN, the disk blank is widened at a speed of 7mm / s-9mm / s; The axial feed speed is 2500-3000KN under the axial rolling force of 2500-3000KN, so that the disk blank is widened at a speed of 4mm / s-7mm / s, and rolled into a solid disk-shaped forging. This method is mainly used for rolling disc-shaped forgings with excellent shape, size, structure and performance.

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.

The invention relates to the technical field of machining, in particular to a machining method for frame parts. The machining method comprises the following steps that the rough milling of the front and back surfaces of parts is performed, a process block at the part through cavity is reserved according to the machining precision, and a margin of 0.5 mm at the other machining positions is reserved; and the respective finish-milling of the front and back surfaces of the parts is performed. According to the method, by controlling machining allowance accurately, the parts are accurately and precisely milled; by reserving the process block, the deformation stress can be released during rough milling, the supporting effect can be achieved when inner depression and the surface of the frame are machined; and the product size is effectively guaranteed, the clamping is convenient, the pressure plate changing time is shortened, and the machining efficiency is improved. By adopting the machiningprocess method, the problem of deformation of frame parts is solved, the product quality is stable, the requirements of design drawings are met, and the product qualification rate and the machining efficiency are improved.

The invention discloses a rolling formation method of a large and medium stainless steel hollow disc-shaped forge piece , which comprises the following steps of: upsetting, compressing and punching a stainless steel 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 10-15mm / s under 4000-4900KN of an axial rolling force at an axial feeding speed of 2mm / s; rolling the disc blank for 20-40s to enable the disc blank to widen at a speed of 8-12mm / s under 3000-3500KN of an axialrolling force and 3000-4000KN of a radial rolling force at an axial feeding speed of 1mm / s; rolling the disc blank for 40-60s to enable the disc blank to widen at a speed of 5-8mm / s under 2500-3000KNof an axial rolling force and 2000-3000KN of a radial rolling force 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.