469 results about "Stress relief" patented technology

Provided is a method for judging geology of a time-delayed extremely intense rockburst as to deep tunnel engineering. Information about geological structures is recorded according to methods such as geological mapping and advanced geological prediction of the tunnel face. Geometric characteristics of burst craters formed during the rockburst are recorded by utilizing advanced geological drilling and profile scanning technologies in a rockburst-damaged zone. 3D geostress in the rockburst-damaged zone is measured by using a stress relief method or a hydraulic fracturing method to determine the orientation of the maximum principal stress. A 3D numerical calculation model is established based on initial geostress testing results and physical and mechanical parameters of rock and structural discontinuities obtained through on-site geological investigations. By conducting excavation simulations under different combinations of structural discontinuities and performing numerical calculation, the risk of time-delayed extremely intense rockburst disasters at current locations after tunnel excavation is judged.

The utility model discloses an assembly line carrier stress relieving device which comprises a stress rod hinged to the front end of a walking frame in a carrier and a tail rod arranged at the rear end of the carrier, the lower end of the stress rod obliquely stretches out towards the rear lower portion of the carrier, and the lower end of the stress rod serves as a stress part for receiving power for pushing the carrier to advance. The tail rod extends towards the rear side of the walking frame, the tail rod on the front side carrier is used for acting on the stress rod on the rear side carrier, so that the lower end of the stress rod swings between the stress position and the disengaging position, and the disengaging position is higher than the stress position. The upper ends of the stress rods obliquely stretch out towards the upper front portion of the walking frame, a limiting structure is formed at the front end of the frame and used for limiting the stress rods so that the lower ends of the stress rods can be located at stress positions, and the tail rod is used for acting on the upper ends of the stress rods on the rear side carrier. The lower end of the stress rod swings between a stress position and a release position; the width of the tail rod is larger than that of the upper end of the stress rod.

The invention relates to the technical field of aluminum alloy forging, in particular to a forging process capable of reducing reverse forging coarse grains of 6061 aluminum alloy, which comprises the following steps: acquiring a 6061 aluminum alloy ingot, homogenizing and annealing the 6061 aluminum alloy ingot at 480-520 DEG C for 12-16 hours, cooling to room temperature by water, performing ultrasonic flaw detection, performing turning surface treatment, and alternately forging and pressing in three directions, thereby obtaining the 6061 aluminum alloy. The method comprises the following steps: placing a fine-grain 6061 aluminum alloy forge piece in a graded heating furnace, completing sub-dynamic recrystallization, applying directional pressure stress of 50-80MPa to the 6061 aluminum alloy forge piece, analyzing grain boundary characteristic distribution by adopting an electron back scattering diffraction technology, and obtaining the grain boundary optimized 6061 aluminum alloy forge piece with a discontinuous coarse-grain structure through laser shock strengthening and stress relief annealing. According to the method, the problems that reverse forging coarse grains are caused by uneven strain distribution during forging and pressing, and fine grains and high-density nanoprecipitation cannot be effectively obtained and a grain boundary structure cannot be optimized due to the fact that follow-up forging, heat treatment and stress treatment parameters are difficult to accurately control can be solved.

The invention provides an intelligent temperature control method and system for relieving stress of a glass annealing kiln. The method comprises the following steps: transmitting acoustic surface waves through a distributed sonic sensor to collect stress propagation data in glass, decoupling coupling characteristics of sound velocity and temperature, extracting a relaxation time constant, and generating a stress relaxation rate; performing time difference cross-correlation analysis to construct a stress propagation three-dimensional gradient field, establishing an incidence relation between the relaxation rate and the gradient field, and constructing a mapping strategy of the temperature set value and the relaxation rate according to the incidence relation; generating a dynamic temperature adjusting parameter and converting the dynamic temperature adjusting parameter into a heater power control signal; and dynamically adjusting a stress data feature extraction rule to match a real-time stress state according to the relevance between the gradient field update frequency and the temperature adjustment rate. According to the application, dynamic mutual optimization of the annealing stress elimination efficiency and the kiln temperature setting precision is realized, the glass residual stress is reduced, and the hidden danger of plate explosion is eliminated.

The invention discloses an oxygen-enriched destressing crystal growth method and a crystal growth furnace, and relates to the technical field of crystal growth, and the oxygen-enriched destressing crystal growth method comprises the following steps: step 1, pre-treating a PMNT polycrystal material, and putting the pretreated PMNT polycrystal material into a crucible; 2, pre-flushing the growth furnace and creating an oxygen partial pressure environment; 3, raising the temperature in the growth furnace to melt and homogenize the PMNT polycrystal material in the crucible; step 4, the crucible moves downwards for directional solidification of the crystal, a solid-liquid interface is formed and stably moves upwards, and in the process, a dynamic regulation and control strategy is adopted in the growth furnace to control an oxygen-enriched environment to promote crystal growth, so that the crystal digests growth stress in the growth process, and formation of oxygen vacancies is inhibited; and step 5, after crystal growth is finished, gradient cooling is performed to room temperature in an oxygen-enriched environment, and a crystal ingot is obtained. Oxygen is used as a regulation and control tool, the stress problem caused by oxygen vacancy is physically solved, the color center and performance problems caused by oxygen vacancy are chemically solved, and the crystal growth quality is improved.

The utility model provides girth welding equipment integrated with an induction preheating and stress relief mechanism, which relates to the technical field of girth welding and comprises a worktable, a sliding rail is arranged at the top of the worktable, and a driving tailstock and a rotary clamping mechanism are arranged on the rail in a matching manner to realize coaxial clamping of workpieces; the side face of the workbench is slidably connected with a movable supporting table, the top of the workbench is provided with a supporting column and an induction preheating device, the supporting column is adjustably connected with a welding device and a stress relief device, and the welding device, the stress relief device and the movable supporting table synchronously move along with the movable supporting table. During working, a workpiece is firstly clamped and welded after induction preheating, stress is finally relieved in real time, and the rotary clamping mechanism drives the workpiece to rotate. The device integrates multiple functions, solves the problem of process dispersion of traditional equipment, prevents cracks through accurate preheating, relieves stress in real time, improves stability, and guarantees welding precision through coaxial clamping.

The invention discloses an automatic post-welding treatment device for a steel structure welding part, and relates to the technical field of stress relief, the automatic post-welding treatment device comprises a setting frame and a bearing, the bearing is mounted on one side surface of the setting frame, a rotating shaft is mounted on the inner wall of the bearing, a clamping arm is mounted on the outer side surface of the rotating shaft, and a lever extension arm is arranged on one side surface of the clamping arm; a composite flexible floating supporting layer composed of an air bag and sponge is used for isolating base damping, a movable frame descends to be in linkage with a trigger plate to abut against a lever, and an innovative automatic rigid clamping mechanism that side clamping arms are driven to be closed is adopted; and finally, the effects of full-automatic feeding of the steel structure workpiece, stable suspension supporting and efficient post-welding stress vibration elimination under ideal boundary conditions are achieved, and therefore the defects that in the prior art, the labor intensity of workers is large, and the overall stress elimination treatment efficiency is seriously limited are overcome. And a manually-tightened high-strength clamp is easy to loosen under the working condition of long-time high-frequency vibration, so that the treatment effect is unstable.

A power semiconductor device includes a semiconductor structure comprising an active region, and a plurality of stress relief trenches in the semiconductor structure laterally between the active region and at least one edge of the semiconductor structure. The stress relief trenches respectively comprise opposing sidewalls and a dielectric material and / or a semiconductor material therebetween, and do not contribute to electrical conduction between first and second terminals of the power semiconductor device. Related devices and fabrication methods are also discussed.

The invention discloses a temperature rise verification method for welding reliability of a copper bar, relates to the technical field of copper bars, and provides the following scheme aiming at the problems that potential and developing hidden defects proposed in the background technology cannot be identified and potential safety hazards are buried due to the fact that obvious temperature abrupt change is possibly not caused in the test period. Comprising the steps of sample selection and pretreatment: selecting a to-be-tested copper bar welding part, performing nondestructive testing (such as ultrasonic testing or X-ray testing) on the sample, observing defects such as air holes, slag inclusion, cracks and incomplete penetration, removing obviously unqualified samples, and pretreating the sample, including surface cleaning and stress relief annealing. According to the invention, the artificial intelligence technology is deeply integrated into the traditional temperature rise test process, so that the characteristic mode can be identified when a tiny hot spot is just formed and the overall temperature rise is not caused to exceed the standard, the early intelligent diagnosis of hidden defects is realized, the fault hidden danger is eliminated in the bud state, and the accuracy of the detection result is improved at the same time.

The invention relates to the technical field of analogue simulation, in particular to a plate shape control parameter optimization method based on digital twinning, which comprises the following steps of: constructing a material microscopic performance digital twinning body, calculating the offset of a physical neutral layer through virtual straightening rehearsal, deducing a non-uniform differential curvature target, carrying out reverse iteration, and outputting a global optimal parameter of a straightening machine. And the fracture mechanical model is used for driving the digital twin to perform virtual simulation of shear crack propagation, burr and edge collapse data are calculated, and the angle and surface prestress parameters of a shear knife are adjusted. And the production line laser point cloud and the visual image are fused to construct geometric morphology digital twin bodies, a defect topology fingerprint is generated, the two digital twin bodies are coupled by running a moving target spot interception algorithm, and the optimal transverse track and the local rolling reduction of the stress release roller are planned. According to the method, through multi-physics field virtual simulation and closed loop verification, collaborative optimization of global straightening, dynamic shearing and local repairing in high-strength steel plate production is achieved.

The invention discloses a high-performance Cu-Co-Si alloy plate and a preparation method thereof, and belongs to the technical field of copper alloy materials. The alloy plate comprises the following components in percentage by weight: 1.0-2.5% of Co, 0.2-1.0% of Si, 0.09-0.2% of Cr, 0.01-0.1% of Ni, less than or equal to 0.2% of Ti, less than or equal to 0.5% of Fe, less than or equal to 0.5% of Sn, less than or equal to 0.5% of Zn, less than or equal to 0.5% of P and the balance of Cu and inevitable trace impurities. The preparation method comprises the steps of smelting, semi-continuous casting, hot rolling, cold rolling, cleaning, stress relief annealing, solid solution, final cold rolling, aging and the like. According to the invention, alloy elements are reasonably matched and a preparation process is optimized, so that the alloy plate forms a nanoscale dispersed precipitated phase, dislocation motion is effectively hindered, grains are refined, and synergistic improvement of strength, conductivity and processability is realized. The thickness of the finished board is (0.02-0.15) + / -0.003 mm, the hardness is 180-220 HV, the electric conductivity is 62-66% IACS, the tensile strength is 620-680 MPa, 90-degree bending R / t is 0.5, and the finished board is free of surface defects and can be widely applied to the electronic and electrical field with high reliability and high performance.

The invention provides a high-strength corrosion-resistant steel strand and a preparation process thereof, and belongs to the technical field of steel strand manufacturing. The steel strand raw material wire rod comprises the following chemical components in percentage by weight: 0.95%-1.08% of C, 1.00%-2.20% of Si, 0.60%-1.45% of Mn, 0.28%-0.38% of Cr, 0.05%-0.09% of V, 0.20%-0.27% of Ni, 0.24%-0.30% of Cu and 0.020%-0.030% of Alt, and (Si + 1.2 * Mn) / (8 * V) is more than or equal to 4.0 and less than or equal to 6.2. The preparation process comprises the key steps of converter smelting, LF furnace refining, RH vacuum degassing composite refining, diffusion annealing, two-section type controlled cooling, multi-pass drawing, intermediate destressing treatment and the like. The tensile strength of a finished product is larger than or equal to 2400 MPa, the corrosion rate of a 5% NaCl solution for 96 h is reduced by 75% or above compared with a traditional 82B wire rod, and the drawing wire breakage rate is smaller than or equal to 0.1%.

Cable entry (100), comprehensive - a holder (110) with a through-opening (112) belonging to the holder (110) and at least one projection (114) arranged between the through-opening (112) belonging to the holder (110) and an edge section of the holder (110) belonging to the holder (110), which extends away from the holder (110) in the direction of passage, and - a seal (120) with a through-opening (122) belonging to the seal (120) and at least one recess (127) belonging to the seal (120) arranged between the through-opening (122) belonging to the seal (120) and an edge section of the seal (120) belonging to the seal (120), which is designed to engage with the corresponding projection (114) of the holder (110), wherein the holder (110) has a strain relief (113) acting on an outer circumference of a line (200) in the form of at least one hook which is directed into the through-opening (112) of the holder (110).

The application provides a molybdenum-tungsten alloy composite rotary target repairing method, which comprises six steps of target disc defect inspection, mechanical treatment, preliminary filling, electron beam cladding, stress relief annealing and post-treatment. The molybdenum-tungsten alloy composite rotary target repairing method of the application analyzes the information such as defect type, form, size, material composition and content of the waste molybdenum-tungsten composite rotary target disc or the molybdenum-tungsten composite rotary target with defects in the production process, adopts different filling methods, performs local cladding through an electron beam, and finally obtains the repaired molybdenum-tungsten alloy composite rotary target. The molybdenum-tungsten alloy composite rotary target repaired by the method has high density and high strength of the combined part, and the quality is equivalent to that of the original product, which can fully meet the use requirements of the X-ray tube, and effectively realizes the reuse of the waste molybdenum-tungsten composite rotary target disc or the molybdenum-tungsten composite rotary target with defects in the production process.

The application discloses a joint structure of high-energy beam welding and a processing and welding method thereof, and aims at solving the problems of stress concentration, gas residue, heat affected zone and difficult control of welding quality in the prior art. The joint structure comprises coaxially assembled base material I and base material II; a first annular groove is arranged on a welding surface of the base material I, a second annular groove is arranged on a welding surface of the base material II, the groove widths of the first annular groove and the second annular groove are consistent and the positions of the first annular groove and the second annular groove correspond; the first annular groove and the second annular groove form an annular stress relief channel after the base material I and the base material II are assembled; at least one exhaust channel is arranged on the base material I and / or the base material II, one end of the exhaust channel is communicated with the annular stress relief channel, and the other end is used for communicating with an external environment; and the maximum radial dimension of the communicated position of the exhaust channel and the annular stress relief channel is smaller than the groove width of the annular stress relief channel. The structure can eliminate stress concentration during welding, and prevent the initiation and expansion of cracks after welding.

The application discloses a nickel-plated steel strip lead processing method and belongs to the technical field of metal material surface treatment. The method aims to solve the problems of poor plating layer adhesion, large internal stress and easy peeling of the existing nickel-plated steel strip lead. The process steps include: S1, steel strip oil removal treatment; S2, composite activation treatment: the oil-removed steel strip is immersed in a composite activation solution containing sodium citrate to remove the surface oxide layer and form an active adsorption film; S3, nickel plating: the activated steel strip is immersed in a sulfate plating solution containing saccharin and 1,4-butynediol as composite additives for electroplating to form a low-stress and high-density nickel plating layer; S4, post-treatment: cleaning and drying; S5, slitting and packaging. The application cooperates sodium citrate activation with a plating solution system containing stress relieving agents, significantly improves the adhesion between the substrate and the plating layer, reduces the internal stress of the plating layer, and the obtained product has no peeling and falling of the plating layer after repeated bending, low porosity and excellent comprehensive performance, and is particularly suitable for the manufacturing of high-performance electronic component leads.

The application discloses a welding method for improving low-temperature impact toughness of thick plates in a stress relief heat treatment state, which comprises the following steps: processing a groove; symmetrically processing an X-shaped groove on a welding section of a thick steel plate to be welded, wherein the X-shaped groove comprises a central flat part and two inclined parts symmetrically arranged on both sides of the central flat part in a thickness direction; pre-welding; controlling an assembly gap of the tailor-welded thick steel plate to be zero, and adopting tungsten argon arc welding to pre-weld a welding bead on both sides of the groove root of the upper and lower surfaces of the thick steel plate; and welding; adopting submerged-arc welding to weld and fill the groove on both sides of the upper and lower surfaces of the thick steel plate containing the pre-welding bead. The welding method for improving low-temperature impact toughness of thick plates in a stress relief heat treatment state can effectively improve the low-temperature impact toughness of the weld.

The application discloses a thick plate welding method with good low-temperature impact toughness in a stress relief annealing state, which comprises the following steps: processing a groove; symmetrically processing an X-shaped groove on a welding section of a thick steel plate to be welded, the X-shaped groove comprising a central flat part and two inclined parts symmetrically arranged on both sides of the central flat part in a thickness direction; and welding; controlling an assembly gap of the tailor-welded thick steel plate to be zero, and adopting five-wire submerged arc welding to perform single-pass welding on upper and lower surfaces of the thick steel plate respectively. The welding method adopts high-efficiency five-wire submerged arc welding, and through reasonable setting of angles of welding guns and polarities of power sources, reasonable matching of welding materials and process parameter windows, cooperation of an optimized groove form and the process parameter window, and the like, low-temperature impact toughness of a weld after stress relief annealing heat treatment is avoided from greatly decreasing.

The invention discloses an anti-corrosion composite coating for an ammonia gas engine, relates to an anti-corrosion technology for an ammonia gas fusion engine, and solves the technical problem that the reliability, durability and commercialization process of an ammonia fuel engine are restricted by the existing engine material system and protection technology. The composite coating comprises a base material arranged on the surface of the ammonia gas engine component; the base material layer is adjacent to the base material layer, is arranged on the surface of the base material and is used for resisting ammonia-alkali corrosion; the middle transition layer is arranged on the surface of the adjacent base material layer and is used for component gradient transition and stress relief; and the outermost surface layer is arranged on the surface of the middle transition layer and is used for resisting acid corrosion and pitting corrosion. The invention further discloses an intelligent corrosion prevention system and method for the ammonia gas engine. The invention solves the problem of limited protection performance of the traditional single coating.

The invention relates to the technical field of pressure vessel manufacturing, and discloses a spherical tank welding stress reduction process with coupling preheating and interlayer temperature control, which comprises the following steps: preheating a to-be-welded area of a spherical shell plate before welding; multi-layer and multi-pass welding is conducted through a small heat input welding method, in the welding process, self-adaptive heat input control is executed based on geometrical characteristics of a standard linear area, a T-shaped intersection area and the like of a weld joint path, and meanwhile the interlayer temperature between all welding passes is strictly controlled; a symmetric welding method and a segmented back welding method are adopted to balance deformation; and finally, a tempering welding bead with low linear energy is welded on the cover surface layer. According to the method, through in-situ, zoning and multi-stage coordinated regulation and control of welding heat input, formation of hard and brittle structures is effectively restrained, the performance of a heat affected zone is optimized, the residual stress peak value of a welding joint, especially a geometric discontinuous region, is remarkably reduced, and the process does not need overall heat treatment after welding, so that the production cost is reduced. The manufacturing period is shortened; and the production cost is reduced.

This utility model discloses a fracture-resistant bolt connection pair structure for long-span steel bridges, including a bolt body, an anti-loosening nut assembly, an anti-corrosion washer assembly, a first steel bridge connection plate, and a second steel bridge connection plate. This utility model relates to the field of steel bridge connection structure technology. This fracture-resistant bolt connection pair structure for long-span steel bridges forms a dual stress dispersion structure through a tapered connector between the bolt head and the bolt segment, and four U-shaped stress relief grooves on the bolt segment. This significantly reduces the stress concentration coefficient at the bolt connection, preventing fatigue crack initiation under long-term alternating loads. Simultaneously, the main nut and auxiliary nut, in conjunction with an annular boss, compress the nitrile rubber elastic bushing, continuously compensating for preload attenuation caused by vibration, achieving a preload retention rate of over 90%. This solves the problem of uneven bolt stress caused by loosening of traditional nuts. It ensures the fracture-resistant performance of the bolt connection pair from both "fatigue resistance" and "loosening prevention" dimensions, meeting the core stress requirements of long-span steel bridges.

To provide a method and device for reducing driving stress that can appropriately alleviate the stress drivers experience while driving. [Solution] The controller 70 performs a stop detection step to detect when a vehicle stops in accordance with the instructions of a traffic control device that switches between a driving permission instruction and a driving restriction instruction at a predetermined timing; a time acquisition step to acquire the first hour until the instructions of the traffic control device switch to a driving permission instruction; and a guidance step to provide stress relief information related to stress relief according to the first hour.

An improved surface-mount technology (SMT) component is provided. In certain embodiments, this improved SMT component can comprise a component body, a first solderable surface area disposed on a surface of the component body, where the first solderable surface area includes one or more signal leads, and a second solderable surface area disposed on the surface of the component body, where the second solderable surface area is substantially co-planar with the first solderable surface area and excludes any signal leads.

The invention discloses a titanium / steel welding method based on a laser cladding transition layer, and belongs to the technical field of titanium alloy and stainless steel dissimilar metal connection manufacturing. The method comprises the steps that vanadium powder serves as a cladding material, a vanadium metal transition layer is prepared on the end face of the titanium alloy through the laser cladding technology, and then a workpiece obtained after cladding is completed is subjected to pretreatment including stress relief treatment, surface machining and cleaning; and finally, the titanium alloy and vanadium transition layer and stainless steel are subjected to laser assembly welding. The transition layer interface prepared through laser cladding is in a metallurgical bonding mode, the compatibility of dissimilar materials on the two sides is achieved through the component gradient structure of the transition layer, and then the weldability of titanium alloy and stainless steel and the performance of a connector are greatly improved; and meanwhile, the method has certain general applicability, has a relatively good reference value in the field of connection of other heterogeneous materials, and provides an effective breakthrough for realizing industrial and marketization application.

The present application belongs to the technical field of composite material processing, and particularly relates to a combined mold for reducing residual stress of a composite material cylindrical barrel winding, which comprises a rectangular mandrel main body section, a clamping section and a stress relief section. Four planes of the rectangular mandrel main body section are provided with grooves, and the groove edges are provided with scale supporting clamping grooves. The clamping section is integrally connected with the rectangular mandrel main body section. The stress relief section is provided with a telescopic chuck device, and the stress relief section is embedded in the groove of the rectangular mandrel main body. The present application can unload the residual stress generated by the winding fiber by the up and down movement of the mold stress relief section, effectively solves and improves the problem that the composite material cylindrical barrel is deformed due to the residual stress generated after the winding tension is applied during the winding process, and compared with the residual stress elimination method by vibration aging, the mold is simple to operate and does not consume energy.

The application provides a processing method for fan blade metal edging, which can be used for processing of fan blade metal edging as a thin-walled part, has good processing quality and high yield. The method comprises the following steps: step one, rough milling blank; step two, five-axis rough machining; step three, stress relief by heat treatment, and correction of the reference surface and the reference hole after heat treatment; step four, five-axis secondary rough machining; step five, stress relief by heat treatment again, and correction of the reference surface and the reference hole after heat treatment; step six, five-axis finish machining; step seven, cutting off the upper edging and the lower seat body from the connecting section; and step eight, trimming the edging and detecting surface defects.

The application discloses a kind of metal pipe residual stress elimination method, system and device, method includes: S1 obtains residual stress data and judges high stress area;S2 is sequentially carried out local stress elimination processing to each high stress area, calculates local stress release rate until switching area after reaching standard;S3 carries out overall collaborative stress processing, applies stepwise hydraulic overload and synchronously applies adaptive rotary vibration;S4 real-time monitoring overall processing index, judge whether to meet three termination conditions;S5 pressure relief and low-temperature heat treatment are carried out.The system includes stress mapping module, local processing module, overall processing module, monitoring control module and post-processing module.The device includes clamping and rotating mechanism, hydraulic loading mechanism, exciter, excitation ring, distributed optical fiber sensor and controller.The application can identify high stress area one by one, and adaptively make processing parameters always match the real-time state of pipe, ensure that stress is uniformly released, and effectively eliminate pipe residual stress.

The invention relates to a chemical pressure vessel circumferential weld stress concentration reinforcement welding process which comprises the following specific steps: A, pre-preparation: defect detection and removal, groove processing pretreatment, joint assembly size control and welding material preparation; b, welding implementation, wherein welding implementation comprises back face backing arrangement, front face pulse welding, back face synchronous welding and cover face welding; c, reinforcement and stress relief; D, quality detection; according to the technical scheme, back-gouging-free welding and stress dispersion reinforcement are integrally fused, back-gouging-free, procedure simplification and base metal protection are achieved through cooperation of a gradient ceramic gasket and pulse welding, stress is dispersed through an inner reinforcing structure and an outer reinforcing structure, the reliability of a welding seam is doubly guaranteed, and the welding quality is improved through combination of vacuum plasma cleaning and variable-parameter pulse welding. By means of the post-welding composite stress eliminating technology, welding root forming and overall strength are both considered, and gas-liquid impact and thermal expansion and cold contraction stress in the operation process can be fully resisted.

This invention discloses a stress-reducing fixing structure for a sliding rotor, relating to the field of shaft support structure technology. It includes a rotor body sleeved around the outer periphery of a main shaft. Multiple pressure-relief grooves are spaced circumferentially on the cylindrical wall of the rotor body. These grooves extend radially inward from the inner periphery and spirally along the shaft hole axis, creating a deformation avoidance space within the rotor body. Multiple flexible support arms are formed between adjacent pressure-relief grooves. When the main shaft is heated and generates a radial expansion greater than that of the rotor body, the flexible support arms are radially compressed by the main shaft and undergo elastic bending deformation into the pressure-relief grooves, converting radial displacement into bending strain. This adaptively absorbs and reduces the stress between the main shaft and the rotor body. This invention effectively solves the stress concentration problem caused by differences in thermal expansion coefficients under high-temperature conditions without changing the materials or sacrificing assembly rigidity and rotational accuracy, significantly improving the reliability and service life of the equipment.

The invention discloses a machining technology of a precise deep hole part. The machining technology comprises the following steps that S10, blanking is conducted; s20, solid solution aging; s30, roughly turning an outer circle and chamfering; s40, a middle hole is drilled through a gun; s50, roughly turning the appearance; s60, stress relief aging is carried out; s70, roughly turning the outer circle; s80, the small end is subjected to semi-finish turning; s90, the large end is subjected to semi-finish turning; s100, honing an inner hole; s110, the outer circle is finely ground; and S120, the two ends are subjected to finish turning, and the precise deep hole part is obtained. Compared with the prior art, the technology has the following beneficial effects that 1, the technology is adopted for machining, and the requirement for the coaxiality of 0.02-0.03 of the outer circle of a deep hole in a drawing can be met after machining; 2, the coaxiality of the center hole and the outer circle after gun drill machining can be effectively rectified by adopting the expansion sleeve clamp to roughly turn the outer circle, the subsequent outer circle grinding allowance is reduced, and the machining efficiency is improved;