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

The invention relates to a method for restoring abrasion and deformation of a spigot of a thin-wall cartridge receiver. According to the technical scheme, the method for restoring the abrasion and the deformation of the spigot of the thin-wall cartridge receiver comprises the following steps: machining the abraded and deformed spigot of the thin-wall cartridge receiver, spraying a NiCrAl coating on the spigot and lathing the NiCrAl coating. According to the method for restoring the abrasion and the deformation of the spigot of the thin-wall cartridge receiver, the problem of restoring the failure of the spigot of the thin-wall cartridge receiver made from GH907 materials is solved, and meanwhile it is guaranteed that the cartridge receiver meets the requirements of design paper after being repaired. In this way, the service life of the cartridge receiver is prolonged so that the cartridge receiver can continue being used, and therefore production cost is saved.

The invention belongs to the precise investment casting technology and relates to a method for controlling aero-engine hollow guide blade upper edge plate cavity wall thickness. The method is characterized in that the hollow guide blade upper edge plate wax pattern cavity wall thickness is changed to control casting cavity wall thickness, the front edge of the core body (3) of a ceramic core (7) is allowed to tilt towards a non-runner face, and the included angle alpha of the lower surface (11) of the core body (3) and the runner face (10) of a hollow guide blade upper edge plate wax pattern is allowed to range from 0 degree 30 minutes to 1 degree. By the method, hollow guide blade upper edge plate casting wall thickness evenness at hollow parts is guaranteed, design drawing requirements are satisfied, oversize and scrap are avoided, production yield is increased, and production cost is lowered.

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 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.

An anti-deformation processing technology for a thin-walled body of an air compressor. The anti-deformation processing technology for a thin-walled body of an air compressor is: designing special tooling to effectively avoid the phenomenon of benchmark shifting when processing special positions, The tooling can play a good role in positioning and supporting, and at the same time, the feed rate of each tool is strictly controlled to avoid machining deformation; the machining process of the fuselage is improved, and a new type of extended boring tool is selected. Move the worktable to complete one-time processing of the coaxial holes to ensure the processing accuracy of the coaxial holes of the fuselage; refine the processing technology, standard-definition the clamping method and processing size of the fuselage, improve the utilization rate of the process, effectively guide the operator to work, and reduce operations The phenomenon of processing errors and inability to process occurs; replace new equipment. The invention has technological innovation, strict technological requirements, control of the production process, and improves the processing accuracy of the thin-walled box parts of the air compressor fuselage, and is applied in the technical field of air compressors.

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 axial rolling 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 2500-3000KN of 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.

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 an axial 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 lateral assembling method for a large-span inverted triangular tube truss. The method comprises: step one, a plurality of assembling devices are arranged along an assemblingdirection, wherein all assembling devices include a plurality of assembling platforms that are spaced in a front-rear manner; step two, the front and rear assembling platforms are provided with trussupper tube support frames respectively and other saddle iron type assembling platforms are provided with truss lower tube fixation frames arranged at equal intervals at one side of the front and reartruss upper tube support frames; step three, all inverted triangular tube truss units are arranged at the corresponding assembling platforms laterally and are connected in an end-to-end manner; and one truss upper tube of each inverted triangular tube truss unit is supported at the front and rear truss upper tube support frames and the other truss upper tube is arranged at one corresponding assembling platform, wherein the truss lower tubes are higher than all assembling platforms and are fixed at all truss lower tube fixation frames; and step four, the aligned truss lower tubes and truss upper tubes are welded. Therefore, the construction quality and construction safety are ensured; the construction progress and the mounting precision are improved; and the construction cost is lowered.

The invention discloses a rolling formation method of a large and medium hollow titanium alloy disc-shaped forge piece , which comprises the following steps of: upsetting, compressing and punching a titanium alloy rod material into a hollow disc blank; putting the disc blank into a rolling machine to roll; rolling the disc blank for 20s and axially rolling the hollow disc blank under 4000-4900KN of an axial rolling force at an axial feeding speed of 1.6mm/s to widen the hollow disc blank at a speed of 10-12mm/s; rolling the disc blank for 20-40s and axially rolling the hollow disc blank under an axial rolling force of 3000-3500KN and a radial rolling force of 3000-4000KN at an axial feeding speed of 0.8mm/s to widen the hollow disc blank at a speed of 8-10mm/s; rolling the disc blank for 40-70s and axially rolling the hollow disc blank under an axial rolling force of2500-3000KN and a radial rolling force of 2000-3000KN at an axial feeding speed of 0.5mm/s to widen the hollow disc blank at a speed of 5-8mm/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 provides an installation method of a large-diameter circular roof pipe truss. The installation method comprises the following steps that step 1, construction fixing of a plurality of concrete foundations is carried out in the center of an installation site of the large-diameter circular roof pipe truss according to the design position; step 2, repetition measurement, labeling and recording of position coordinates and elevation are carried out on the concrete foundations; step 3, temporary supports are set up on site and fixed with the concrete foundations one to one respectively;step 4-5, hoisting and welding of an inner ring truss and outer ring truss of a center circle of a circular roof are carried out; step 6, trusses 12 are symmetrically arranged in sequence, and main truss welding is carried out; step 7, installation welding of secondary trusses, supporting rods and riding tracks is carried out; step 8, the pipe truss is integrally disassembled, and it is detectedwhether or not the deflection under the pipe truss meets the requirement; step 9, the temporary supports are disassembled, and site formation is recovered. The installation method of the large-diameter circular roof pipe truss has the advantages that the rapid installation of the large-diameter circular roof pipe truss is achieved, the splicing efficiency is improved, and the splicing quality is ensured.

The invention discloses a rolling forming method of large and medium scale stainless steel solid disk forgings. Firstly stainless steel bar stock is upset and profiled to form a solid disk billet, and then the disk billet is loaded into an elongator to be rolled. During 20 s rolling, the disk billet is expanded at the speed of 10 to 15 mm/s under the condition that axial feeding speed is 2 mm/s and axial rolling force is 4000 to 4900 KN; during 20 to 40 s rolling, the disk billet is expanded at a speed of 8 to 12 mm/s under the condition that axial feeding speed is 1 mm/s and axial rolling force is 3000 to 3500 KN; and during 40 to 60 s rolling, the disk billet is expanded at a speed 5 to 8 mm/s under the condition that axial feeding speed is 0.5 mm/s and axial rolling force is 2500 to 3000 KN, and finally the solid disk forgings are rolled on one-grade fire. The method is mainly applied to the disk forgings with excellent rolling shapes, dimensions, tissues and properties.

The invention discloses a roll forming method of a large and medium high-temperature alloy solid disk forging, which comprises the following steps of: firstly upsetting high-temperature alloy bar materials, profiling into a solid disk blank; and rolling the disk blank in a rolling mill; when rolling within 20s, expanding the disk blank at a speed of 9-11mm/s under a 4000-4900KN axial rolling force with an axial feed speed of 1.6mm/s; when rolling in the time range of 20-40s, expanding the disk blank at a speed of 7-9mm/s under a 3000-3500KN axial rolling force with an axial feed speed of 0.7mm/s; and when rolling in the time range of 40-80s, expanding the disk blank at a speed of 4-7mm/s under a 2500-3000KN axial rolling force with an axial feed speed of 0.5mm/s; and finally rolling into the solid disk forging in one beating. The method is mainly used for rolling the disk forging with excellent shape, dimension, organization and performance.

The invention discloses a roll forming method of a large and medium aluminum alloy solid disk forging, which comprises the following steps of: firstly upsetting aluminum alloy bar materials, profiling into a solid disk blank; and rolling the disk blank in a rolling machine; when rolling within 20s, expanding the disk blank at a speed of 9-12mm/s under a 4000-4900KN axial rolling force with an axial feed speed of 1.9mm/s; when rolling in the time range of 20-40s, expanding the disk blank at a speed of 8-10mm/s under a 3000-3500KN axial rolling force with an axial feed speed of 0.9mm/s; and when rolling within the time range of 40-70s, expanding the disk blank at a speed of 5-8mm/s under a 2500-3000KN axial rolling force with an axial feed speed of 0.5mm/s; and finally rolling into the solid disk forging one one-grade fire. The method is mainly used for rolling the disk forging with excellent shape, dimension, organization and performance.