93 results about "Stress relieving" patented technology

The invention relates to the technical field of copper material manufacturing and processing, in particular to a flat copper wire straightening device which comprises a workbench, supporting legs are fixed to the corners of the bottom face of the workbench, and the flat copper wire straightening device further comprises a feeding mechanism, a longitudinal straightening mechanism, a transverse straightening mechanism and a stress relieving mechanism which are sequentially installed on the top face of the workbench. The stress relieving mechanism comprises a box fixed to the workbench, a heat insulation plate is arranged in the middle of the box, an inlet and an outlet which are aligned are formed in the two ends of the box respectively, and the heat insulation plate is provided with a through groove. An oil cooler and a control module are mounted on the top surface of the box body; an infrared thermometer electrically connected with the control module is mounted on the side, close to the inlet, of the thermal insulation plate; a first stress relieving mechanism and a second stress relieving mechanism are arranged in the box body and form a cooling oil circulation loop. Through eddy current heating of the first stress relieving mechanism and flexible pressure maintaining cooling of the second stress relieving mechanism, the internal stress of the flat copper wire is eliminated, secondary springback is avoided, the straightness stability is improved, and the machining requirement of a high-precision motor winding is met.

The invention belongs to the technical field of cable twisting, and particularly relates to a conductor surface treatment device and method for cable manufacturing, and the conductor surface treatment device for cable manufacturing comprises a feeding mechanism, a destressing part, a cooling mechanism, a cooling mechanism, a storage mechanism, a diversion mechanism and a disturbance mechanism; the feeding mechanism comprises a carrying table, a supporting cylinder and a material guiding disc, a through hole for a wire to pass through is formed in the outer wall of the material guiding disc, and the material guiding disc is rotationally installed on the carrying table through the supporting cylinder. The destressing part is used for heating the wire; the cooling mechanism is used for cooling the heated wire; the storage mechanism comprises a storage box used for storing cooling liquid and a transfer box. The cooling mechanism comprises a heat exchange plate and an exhaust pipe, the heat exchange plate is fixedly mounted on the inner wall of the storage box, and the exhaust pipe is arranged on one side of the heat exchange plate; the flow guide mechanism comprises a control pump, a conveying pipe and a filter cover, and the transfer box is connected with the storage box through the conveying pipe; through cooperation of the structure, the cable production quality and efficiency are improved, and the equipment maintenance period is prolonged.

The invention discloses a preparation method of a high-strength corrosion-resistant copper alloy wire. The preparation method comprises the following steps: (1) preparing composite powder; (2) preparing pretreatment powder; (3) sensitization treatment and activation are carried out, surface chemical copper plating is carried out on the activated powder, and copper plating powder is obtained; (4) weighing copper powder, nickel powder, silicon powder and copper-plated powder, heating and melting, adding the copper-plated powder into the melt, casting and molding, heating to eliminate stress, cooling, and drawing into a copper alloy wire by using a wire drawing machine; and the copper alloy wire is subjected to heat preservation for 30 min at the temperature of 220 DEG C, then the temperature is increased to 300 DEG C, heat preservation aging is conducted for 3 h, furnace cooling is conducted to 200 DEG C or below after heat preservation is completed, then the copper alloy wire is taken out and subjected to air cooling to the normal temperature, and the high-strength corrosion-resistant copper alloy wire is obtained. The copper alloy casting prepared through the method has high tensile strength, and the prepared copper alloy wire is high in self-corrosion potential and shows good strength and corrosion resistance.

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.

A method for manufacturing a non-oriented electrical steel sheet includes a step of performing hot rolling on a steel material having a predetermined chemical composition, a step of performing first cold rolling, a step of performing process annealing, a step of performing second cold rolling, and a step of performing any one or both of final annealing and stress relief annealing. A final pass of finish rolling is performed in a temperature range equal to or higher than an Ar1 temperature, the steel sheet is held for 2 hours or less in a temperature range lower than an Ac1 temperature in the final annealing, and the steel sheet is held for 1200 sec or more in a temperature range equal to or higher than 600° C. and lower than the Ac1 temperature in the stress relief annealing.

The utility model discloses a thermal aging destressing device for pipe fittings, which belongs to the technical field of thermal aging destressing for pipe fittings, and adopts the technical scheme that the thermal aging destressing device comprises a heating furnace and three furnace doors, the front side of the heating furnace is fixedly connected with a support frame, and the top of the support frame is provided with an adjusting mechanism and a fixing mechanism; the rear side of the heating furnace is fixedly communicated with a cooling frame; the adjusting mechanism comprises a first supporting plate, a first adjusting frame, two second supporting plates, six auxiliary pads, a second adjusting frame, six auxiliary columns and a third adjusting frame, and the problems that due to the fact that specifications of existing pipe fittings are different, temperature distribution in a heating furnace may be uneven during heating destressing, and if the cooling speed is too high, the temperature distribution is not uniform are solved. In the prior art, a large temperature gradient can be formed in the pipe fitting, then thermal stress is generated, and the newly generated stress may counteract residual stress eliminated by thermal aging treatment, and even causes the problems of deformation or cracking of the pipe fitting and the like.

The invention discloses a preparation method of a bimetal composite seamless tube casting blank, which is characterized in that an outer-layer hollow material is used as a mold, an inner-layer solid material is solidified in the outer-layer hollow material, and the temperature of stainless steel or nickel-based alloy steel liquid is controlled to be 10-50 DEG C above the melting point of the outer layer. The outer layer is firstly heated to 600-700 DEG C in the solidification process, the temperature of the outer layer is controlled to 900-1050 DEG C in the solidification process, the hollow material wall part of the outer layer is melted and does not flow in the solidification process, and the inner layer and the outer layer are solidified and compounded to prepare the composite pipe blank. In the solidification, accumulation and rising process of the inner-layer solid material, the molten and compounded part at the lower part is subjected to heat preservation so as to be slowly cooled, namely, the stress is eliminated in the compounding process. And the stress is eliminated again after compounding is completed, so that the structure is homogenized, and cracks caused by poor toughness of the high-strength outer layer are overcome.

Described herein is a method of manufacturing an aluminium alloy rolled product of a heat-treatable aluminium alloy, comprising: semi-continuous casting a heat-treatable aluminium alloy into a rolling ingot; homogenizing of the rolling ingot to a peak metal temperature (PMT) and whereby said aluminium alloy has a specific energy associated with a DSC signal less than 2J / g in absolute value; hot rolling of the rolling ingot in multiple hot rolling steps into a hot rolled product having a final rolling gauge of at least 1 mm, whereby the hot rolled product during at least one of the last three rolling steps has a temperature less than 50° C. below PMT; quenching of the hot rolled product at final rolling gauge from hot-mill exit temperature to below 175° C.; optionally stress relieving and ageing of the quenched and optionally stress relieved hot rolled product.

The invention relates to the technical field of production equipment of ultrathin metal materials (such as stainless steel, titanium alloy, copper alloy and aluminum alloy), and the production thickness can reach 0.01 mm. The invention particularly discloses a stress relief annealing production line for the ultrathin metal materials. The stress relief annealing production line comprises an unwinding mechanism, a stress relief furnace, a heat dissipation furnace, a winding mechanism and a double-tension control system. The double-tensioning-force control system comprises a first tensioning mechanism, a second tensioning mechanism and a control mechanism, the first tensioning mechanism is used for adjusting the tensioning force of the coiled material before the coiled material enters the destressing furnace, the second tensioning mechanism is used for adjusting the tensioning force of the coiled material before the coiled material enters the heat dissipation furnace, and the control mechanism is used for controlling the tensioning force of the coiled material after the coiled material enters the heat dissipation furnace. The second tensioning mechanism is used for adjusting the tensioning force of the coiled material discharged from the destressing furnace, the control mechanism is electrically connected with the first tensioning mechanism and the second tensioning mechanism, and the control mechanism controls the tensioning actions of the first tensioning mechanism and the second tensioning mechanism. The method has the advantages that the heat treatment process of the ultra-thin metal material is conducted smoothly, and therefore the production quality of the ultra-thin metal material can be improved.

The invention discloses a tool clamp for flange pipe fitting welding, and relates to the technical field of flange pipe fitting welding, the tool clamp comprises a hollow carrier plate and a pipe fitting body mounted on the upper surface of the hollow carrier plate, and further comprises a spherical hammer which is arranged on the upper surface of the hollow carrier plate and can knock the welding seam position of the pipe fitting body, the driving mechanism is arranged in the middle of the upper surface of the hollow carrying plate, used for being connected with the spherical hammer and capable of controlling the spherical hammer to move along a set path, and the driving mechanism can drive the spherical hammer to track the welding gun in real time, so that just-molten melt permeates into the deep layer of a welding seam of the pipe fitting body, and synchronous fixing is achieved through the outer fixing plate and the inner fixing rod; a spherical hammer tracks a welding gun to knock a welding seam in real time and timely eliminates stress; an inner fixing rod is switched into a dynamic positioning mode in the knocking process; the pipeline is released at the knocking moment; a permeation space is created for melt;

The present application relates to the technical field of ship welding, and particularly relates to a ship welding residual stress elimination auxiliary tool and a stress elimination device. The ship welding residual stress elimination auxiliary tool comprises a fixing plate for fixing an ultrasonic impact gun, the fixing plate is provided with a fixing hole, the fixing plate is provided with two supporting rods, the supporting rods are uniformly and spacedly arranged around the axis of the fixing hole, and the supporting rods are slidingly arranged on the fixing plate; the supporting rods have threaded sections, and the abutting portions of the supporting rods are located on the same side of the fixing plate; the auxiliary tool adjusting mechanism comprises a driving wheel rotatingly arranged on the fixing plate, the driving wheel is internally provided with a threaded hole threadedly matched with the threaded section of the threaded rod; and an adjusting knob is in transmission connection with the driving wheel. Thus, the problem that the pressing force relies on the experience of workers when the workers hold the ultrasonic impact gun to work, thereby affecting the stress elimination effect and increasing the occupational health risk of the workers is solved.

The application discloses a heat treatment method of low-carbon high-chromium heat-resistant steel large-size continuous casting billets, which comprises the following steps: slow cooling process, the low-carbon high-chromium heat-resistant steel large-size continuous casting billets are slowly cooled and pit-cooled or furnace-cooled to 100-150 DEG C; tempering process, the low-carbon high-chromium heat-resistant steel large-size continuous casting billets slowly cooled to 100-150 DEG C are put into a furnace, heated to 765+ / -10 DEG C at a heating speed less than 100 DEG C / h, kept for 14-16 hours, then furnace-cooled to <=500 DEG C, and out of the furnace for air cooling to room temperature. The application directly carries out tempering after slow cooling of the casting billets instead of conventional annealing, not only significantly shortens the furnace time, but also greatly saves energy and effectively reduces production cost, thus breaking through the annealing+tempering stress relieving heat treatment process mechanism in the field, and effectively solving the technical problems of high production cost and long annealing furnace time in the prior art.

The invention discloses non-oriented silicon steel for a driving motor and a manufacturing method of the non-oriented silicon steel. The non-oriented silicon steel comprises the following chemical components in percentage by weight: less than or equal to 0.0025% of C, 2.7-3.2% of Si, 0.25-0.50% of Mn, less than or equal to 0.010% of P, 0.65-0.80% of Als, less than or equal to 0.0025% of S, less than or equal to 0.0020% of N, less than or equal to 0.0020% of Ti, 0.015-0.035% of Cu and the balance of Fe and inevitable impurities. The production method comprises the production steps of molten steel smelting, continuous casting, heating, rolling, normalizing pickling, cold rolling, annealing, stamping flaking and stress relief annealing. By adjusting alloy elements and combining process design, on the premise that the excellent magnetic performance of the material is guaranteed, the mechanical performance is improved by adopting a solid solution strengthening principle, deterioration of the magnetic performance in the sheet manufacturing process is eliminated through solid solution and stress relief annealing, the magnetic performance of the iron core is improved, and the mechanical performance of the product is improved.

The application relates to the technical field of metal plate composite technology and discloses a preparation process of a Kovar alloy-copper composite plate, which comprises the following steps: a preparation process of an Invar alloy-copper composite plate, which comprises the following steps: s1, taking one Invar alloy plate and two copper plates; s2, immersing the Invar alloy plate into liquid copper after the Invar alloy plate is heated to 250-300 DEG C; s3, positioning the two copper plates and the Invar alloy plate to form a group of initial composite plate materials; s4, heating the whole in a heating furnace, the heating temperature is 700-850 DEG C, and the heating time is 20-40 min; s5, taking out and cooling to 500-650 DEG C, and then performing hot rolling; s6, performing stress relieving annealing on the composite blank; s7, naturally cooling to normal temperature after annealing, and cold rolling to form an Invar alloy-copper composite plate with a preset thickness. The Invar alloy-copper composite plate prepared through the process is more stable and not easy to separate between the plates, the composite plate has the physical properties of the Kovar alloy and good thermal conductivity.

Processing method for avoiding burning of titanium alloy bushing coated with TiN by PVD, belongs to the technical field of bushing production. The method comprises the following steps: S1: pretreatment; S2: numerical control rough machining; S3: bench work and stress relief; S4: numerical control semi-finishing and grinding; S5: numerical control finishing; S6: inspection and treatment. The present application increases the stress relief process before the finishing process, releases the stress generated during the rough machining of the part, and avoids the deformation of the workpiece caused by stress release during finishing or PVD TiN coating process, resulting in size out-of-tolerance. Adjust the marking process sequence of the workpiece, which can effectively prevent the high-precision size of finishing from deforming due to external force during the marking process, resulting in size out-of-tolerance.

This invention relates to the field of heat treatment methods and discloses a quenching and tempering heat treatment process for 42CrMo1 steel based on end-quenching value control. The process includes steps 1: pre-quenching and tempering preparation (related end-quenching value preset), 2: quenching treatment (core end-quenching value control step), 3: tempering treatment (stress relief and microstructure stabilization), 4: post-quenching and tempering quality verification (related end-quenching value feedback), and 5: finished product identification and archiving. This process achieves a balance between hardenability and quenching cracking risk, reducing the scrap rate through "precise control of Ti element + synergistic optimization of main alloy composition." It avoids excessive hardenability caused by excessive main alloy composition and refines grains and improves hardenability through Ti element, reducing the quenching cracking rate from 16.8% to below 3%. Out of 925 steering knuckles, only 30 were scrapped due to quenching cracking (cracking rate 3.25%). Furthermore, by reducing the stirring frequency (from 20Hz to 18Hz), the cracking rate in subsequent batches was further reduced to around 1%, completely solving the problem of "hardenability versus cracking." The core contradiction.

The present application belongs to the field of mechanical processing and relates to a processing method of a long-thin-wall gear ring with inner and outer teeth, which optimizes the whole processing procedure of the part: forging, isothermal normalizing, rough machining, quenching and tempering, stress relieving annealing, semi-finishing, stress relieving annealing, finishing, tooth making (hobbing + gear shaping), deburring, nitriding treatment, stress relieving annealing (aging treatment twice), finishing and finished product. The increased stress relieving annealing has low cost, but can significantly reduce the deformation in the processing of the part, which can significantly improve the precision and qualification rate of the part. It is beneficial to the stable batch production of the product and can reduce the overall production cost and cycle to a certain extent.

The invention relates to the technical field of abraded roller repair, and discloses a grinding roller abrasion welding repair method which comprises the following steps: a pretreatment step: carrying out surface processing on a grinding roller matrix to remove a fatigue layer and an oxide skin, controlling the processing allowance to be 20-40mm, and then carrying out sand blasting or grinding treatment to clean the surface; the defects of the matrix are detected by adopting a nondestructive inspection technology; in the preheating step, gradient preheating is conducted on the treated grinding roller base body, the preheating temperature is controlled to range from 150 DEG C to 400 DEG C, and an infrared thermometer is used for dynamic monitoring to ensure uniform preheating; stress relief: performing dynamic stress relief treatment in the surfacing process or after surfacing; stress relief heat treatment is carried out on the grinding roller subjected to surfacing, then machining is carried out to reach the specified size, air cooling is carried out to reach the room temperature, remarkable structural stress and deformation cannot be caused, the treatment efficiency and the quality stability are both considered, and finally the overall size precision and performance uniformity of the grinding roller are guaranteed.

A collision-resistant pressure vessel steel for storing and transporting boron trifluoride, comprising the following components (wt%): C: 0.10–0.20%, Si: 0.20–0.40%, Mn: 1.25–1.70%, Al: 0.025–0.045%, P≤0.015%, S≤0.005%, V: 0.010–0.025%, Nb: 0.014–0.035%. The process involves: smelting, casting into a billet, heating the billet, rough rolling, finish rolling, cooling, normalizing, and stress relief. The static yield strength Rel of this invention is 350–430 MPa, and the dynamic yield strength Re is 470–675 MPa; the tensile strength is 510–580 MPa; the yield-to-tensile ratio is ≤0.85; and the static elongation after fracture A is 25–41% and the dynamic elongation after fracture A... d The strength-ductility product is 15950–22320 MPa·% at 30–39.1%; the drop hammer tear (DWTT) energy is 17–20 kJ; when the impact velocity is 5–50 m / s and the impact displacement is 1.5 m, the steel plate absorbs 2.70–3.20 kJ of energy, and the ferrite grain size does not exceed 0.029 μm.

The utility model discloses a stress relief device for metal 3D printing forming parts, and relates to the technical field of stress relief devices, the stress relief device comprises an annealing furnace and a heater, placing grooves are symmetrically formed in the lower part of the annealing furnace, bottom sealing plates are fixed in the annealing furnace at the bottoms of the placing grooves, and templates are slidably inserted in the two placing grooves; according to the utility model, the template is directly driven to enter the annealing furnace through the moving belts on the two sides, and after the template is heated and annealed, when the template is moved to the heat dissipation window, the bottom of the template can rapidly dissipate heat, so that the heat dissipation efficiency of the template is greatly improved. And the heat dissipation speed after annealing is guaranteed, the problem that when an existing stress relieving device for the metal 3D printing forming part is used, operation is strenuous and tedious is solved, and more labor is saved and convenience is achieved when the metal forming part is transferred.

The application discloses a low-alloy cast steel cable clamp forming method, which comprises the following steps: step 1, adopting ZG20Mn low-alloy cast steel to cast a cable clamp blank; step 2, stress relieving annealing, normal tempering and rough machining treatment are carried out on the cable clamp blank; step 3, flaw detection is carried out and casting defects are marked; step 4, corresponding casting defects are removed according to the marks, and a to-be-repaired cavity is formed; step 5, ER69-G welding wire is used to repair and weld the to-be-repaired cavity; step 6, flaw detection is carried out; step 7, quenching heat treatment is carried out through a quenching and tempering furnace; step 8, tempering treatment is carried out through the quenching and tempering furnace; and step 9, the quenched and tempered cable clamp blank is subjected to flaw detection treatment, and is transferred to finish machining treatment if qualified. The application effectively eliminates casting stress, refines and homogenizes internal organization grains, greatly improves material strength, plasticity and toughness, meets the technical requirements of the cable clamp mechanical properties in a suspension bridge structure and is resistant to low temperature of-20 DEG C.

The utility model belongs to the field of casting equipment, and provides a casting desanding and destressing device which comprises a base, a stand column, a top plate, a first air cylinder, a second air cylinder and a spring. Wherein the end part of the upright post is connected to the base; the top plate is connected to one end of the column away from the base; the first cylinder is mounted on the top plate; the second air cylinder is arranged between the top plate and the base, is further connected to the power end of the first air cylinder and can be driven by the first air cylinder; the spring is connected to the power end of the second cylinder and can be driven by the second cylinder to vibrate, and the elastic force direction of the spring is parallel to the vibration direction of the spring driven by the second cylinder.

This application provides a machining method for a high-temperature alloy integral bladed disk, belonging to the technical field of integral bladed disk machining. The method includes: rough turning the profile of the integral bladed disk blank to obtain a rough-turned part; rough milling the rough-turned part to obtain a rough-milled part, during which all blank between the blades is removed, and machining allowance is left in the blade profile area; performing corrosion resistance inspection and vacuum stress-relieving heat treatment on the rough-milled part, and repairing the reference of the rough-milled part; performing finish milling on the rough-milled part in the following sequence: plunge milling of the leading edge, plunge milling of the trailing edge, milling of the blade tip, layered helical milling of the blade profile area, finish milling of the flow channel, and root cleaning to obtain a finish-milled part, wherein the dimensions of the blade profile area of ​​the finish-milled part are consistent with the theoretical blade profile area of ​​the part; and finish turning the disk body area of ​​the finish-milled part. This processing method improves the product quality of high-temperature alloy integral bladed disks.

The invention relates to a machining technology for reducing deformation of a furnace nose double-sided overflow lip plate. The machining technology comprises the steps that material pretreatment is conducted, specifically, precise leveling and double-sided synchronous shot blasting treatment are conducted on a stainless steel plate; stress relief is conducted after welding, wherein stress relief annealing treatment is conducted after the bottom plate and the rib plate are welded; lip opening rough machining and semi-finish machining are carried out, stress relief annealing treatment is carried out, solution treatment is carried out on the overflow lip plate obtained after semi-finish machining, and lip opening finish machining is carried out on the overflow lip plate obtained after solution treatment; and integral forming is conducted, specifically, after the overflow lip plate is subjected to surface anti-zinc-sticking treatment, integral assembling and welding are conducted, and stress is released. Through operations such as double-sided synchronous shot blasting treatment, stress relief annealing and solution treatment, stress relief is improved, and deformation is reduced.

The application discloses a heat treatment method for improving the depth of a hardened layer on the surface of 40CrNi2Mo, and comprises the following steps: selecting a blank casting of 40CrNi2Mo, quenching and tempering the blank casting, heating the blank casting at 850 DEG C, keeping the temperature for 6 hours, and water cooling after discharging; heating the blank casting at 580 DEG C, keeping the temperature for 10 hours, and air cooling after discharging; rough milling the blank casting, and then stress relieving annealing, wherein the annealing temperature is 500-530 DEG C, the keeping time is 10 hours, and the blank casting is air cooled after being cooled to 200 DEG C in the furnace. The method can deepen the quenching layer depth and reduce the occurrence of quenching cracking of the part.

The invention discloses a stress relieving device for waterproof coiled material production, and relates to the technical field of waterproof coiled materials, the stress relieving device comprises a constant-temperature treatment box, a first pressing roller and a second pressing roller are arranged on the left side and the right side in the constant-temperature treatment box, and a positioning shaft roller is arranged on the inner side of the second pressing roller; a movable shaft roller connected with the waterproof roll body is arranged on the lower side of the positioning shaft roller, a first gear disc is fixedly connected to the rear end of the first pressing roller, and a second gear disc is connected to the lower portion of the first gear disc in an engaged mode. The problems that internal stress disappears through reciprocating stretching of the waterproof coiled material by a conventional stress relieving device, but the waterproof coiled material cannot be stably and continuously heated in the machining process, meanwhile, due to the fact that the size specification of the waterproof coiled material is uncertain, a shaft roller of the same size specification needs to be replaced when the waterproof coiled materials of different thickness dimensions are machined, and the machining cost is high are solved. And wrinkles and bumpiness can be caused in the processing process of the waterproof coiled material.

The invention discloses a metal plate destressing leveling machine and method, and relates to the technical field of leveling machines, the metal plate destressing leveling machine comprises a protective mounting mechanism, the protective mounting mechanism comprises a protective shell, and a mounting base is fixed to the inner wall of the protective shell; according to the device, the leveling intelligent adjusting mechanism is arranged, operation of multiple sets of first push rod motors is accurately controlled according to deformation degree data and thickness of the plates, and therefore the device is suitable for the plates with different stress states; if the corners of the plate are seriously deformed, the first push rod motor close to the corners needs to move downwards by a larger distance so as to enhance the treatment strength of the area and reduce stress residue, the pressure of different positions of the roller body can be matched with the stress state of the corresponding area through the mode, and therefore the pressure of the roller body in different positions can be matched with the stress state of the corresponding area; the roller surface in contact with a low-stress area is prevented from being worn unnecessarily, and the service life of the roller body is effectively prolonged.

According to the partition self-adaptive vibration aging control method and system for the residual stress of the steel box girder, partition processing is carried out according to the distribution characteristics of the residual stress of all parts of the steel box girder, the most suitable vibration parameters are matched for different areas, the residual stress elimination rate is remarkably increased, especially the stress elimination effect of a high-stress area is remarkably improved, and the application range of the steel box girder is widened. The function of accurately eliminating the residual stress of different areas of the steel box girder is achieved. According to the method, the vibration-impact composite treatment technology is adopted to eliminate residual stress, a deep pressure stress layer is introduced into a key welding seam area, and the anti-fatigue performance of the welding seam of the steel box girder is greatly improved. According to the method, parameter optimization is completed in a virtual environment through a digital twin-driven virtual debugging technology, so that the field debugging time is remarkably shortened; and meanwhile, due to reasonable vibration parameter setting and an efficient stress relieving effect, the vibration aging treatment time is shortened, and the overall production efficiency is greatly improved.

The present application relates to the technical field of metal casting, and particularly relates to an intelligent casting method and system based on multi-dimensional parameter detection, which comprises the following steps: monitoring the content of raw material elements at multiple points in a molten pool in real time, obtaining a composition uniformity index by calculating the ratio of the content standard deviation to an adaptively updated standard deviation threshold, and combining the raw material element deviation rate to determine whether to perform compensation; determining a flow stability index by monitoring the flow rate of a direct sprue, a cross sprue and an inner gate, and adjusting the pouring speed and pressure in coordination accordingly; and calculating a stress gradient based on the real-time collected multi-point surface stress values, and dynamically adjusting the cooling waterway to eliminate stress concentration. The present application realizes closed-loop intelligent control of multiple key parameters in the whole casting process, effectively improves the composition uniformity, flow stability and suppresses the cooling stress of the castings, thereby significantly improving the stability of the casting quality and the yield.