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Online detection method and system for pole piece extension information and roller press
PendingCN120009087AElectrode rolling/calenderingInvestigating material ductilityElectrical batteryControl engineering
The embodiment of the invention provides an online detection method and system for extension information of a pole piece and a roller press, relates to the technical field of battery production, and at least solves the problem that the extension rate of an empty foil area is detected mainly through offline detection, manual visual detection and the like in the related technology. The problems of low detection efficiency, poor real-time performance, low accuracy, much material waste and the like exist in the prior art. The online detection method comprises the steps that extension information of a current pole piece is determined based on first identification information of the current pole piece and second identification information of the current pole piece, and the first identification information is determined based on a first image, collected by a first visual detection system of the roller press, of the current pole piece; the roller press comprises an unwinding mechanism, a marking mechanism, a first visual detection system, a rolling mechanism, an extension mechanism, a second visual detection system and a winding mechanism which are sequentially arranged in the conveying direction of the pole piece, and the second identification information is determined based on a second image, collected by the second visual detection system, of the current pole piece.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Titanium alloy wire performance detection method, equipment and system
ActiveCN120628809AAnalysing solids using sonic/ultrasonic/infrasonic wavesMaterial strength using tensile/compressive forcesMedical equipmentFrequency spectrum
The invention relates to the technical field of titanium alloy detection, and discloses a titanium alloy wire performance detection method, equipment and system. The method comprises the following steps: acquiring real-time force value displacement data of a tensile test and echo signal data of ultrasonic detection, and processing to obtain smooth force value displacement data and spectrum characteristic parameters; performing feature layer fusion on the yield strength, the tensile strength, the peak frequency and the amplitude attenuation rate to construct a first multi-dimensional feature matrix; inputting a pre-trained deep belief network model, and predicting mechanical properties such as elongation and hardness value; and comparing with a preset threshold value, marking unqualified items and generating a detection report. According to the method, through multi-source data fusion and advanced algorithm processing, the comprehensiveness and accuracy of detection are improved, efficient evaluation of the performance of the titanium alloy wire is achieved, and the method is suitable for the strict detection requirements for the quality of the titanium alloy wire in the fields of aerospace, medical instruments and the like.
Owner:BAOJI YONGXING NON FERROUS METAL MATERIALS CO LTD
Cloth elasticity detection device for clothing manufacturing
ActiveCN120102328AInvestigating material ductilityManufacturing computing systemsStructural engineeringMechanical engineering
The invention relates to the technical field of garment fabric detection equipment, in particular to a fabric elasticity detection device for garment manufacturing, which comprises a base, a detection frame body is fixedly connected to the upper end surface of the base, an optical detector is fixedly mounted on the inner top surface of the detection frame body, and two hollow extension rollers are slidably connected to the side wall of the detection frame body. The two hollow extension rollers are used for fixing, extending and stretching cloth. According to the invention, the hollow extension roller can be used for carrying out winding type adsorption fixation on the garment fabric, the consistency of the overall stretching degree of the garment fabric can be effectively maintained, gradient continuous segmented pressure detection can be carried out on the garment fabric, the pressure detection operation of the garment fabric is simplified, the elasticity detection efficiency of the garment fabric is improved, and the detection precision is improved. Meanwhile, intermittent stretching and extension of the garment fabric can be achieved, corresponding segmented pressure detection can be conducted on the fabric under different extension conditions, and the elastic performance of the garment fabric can be reflected more accurately.
Owner:GANZHOU TENGYE CLOTHING CO LTD
A finished product quality inspection device for recycled aluminum ingots
ActiveCN118706611BRapid positioningGuaranteed accuracyMaterial strength using tensile/compressive forcesMechanical thickness measurementsProcess engineeringIngot
The present invention belongs to the field of aluminum ingot product detection, and in particular relates to a finished product quality detection device for recycled aluminum ingot products; it comprises a detection platform and a limiting mechanism for limiting the aluminum ingot product to be detected on the detection platform, and a detection mechanism for sliding left and right on the detection platform to detect the aluminum ingot product to be detected, and the detection device also comprises a tensile meter arranged on the detection platform for performing a tensile test on the recycled aluminum ingot product to be detected; the present invention can center the recycled aluminum ingot product to be detected, facilitate the rapid positioning of the stretching center point, improve the detection efficiency, and cooperate with the use of symmetrical multi-point synchronous comparison, so that the data of any symmetrical position of the tensile center point of the recycled aluminum ingot product to be detected can be compared, thereby ensuring the accuracy of the detection result, and cooperate with the single-point multiple measurement data display method, further data comparison can be performed on a single measurement point to avoid measurement errors.
Owner:JIANGSU LIZHONG NEW MATERIAL TECH CO LTD
Cruciform tensile specimen with slits and manufacturing method of cruciform tensile specimen with slits
ActiveJP2024175282AMaterial strength using tensile/compressive forcesInvestigating material ductilityCruciformMechanical engineering
To provide a cruciform tensile specimen with slits, when a biaxial tensile test is performed, capable of preventing fracture by reinforcing arms, and manufacturing method of the cruciform tensile specimen with the slits.SOLUTION: A cruciform tensile specimen 1 with slits comprising a square measurement part 3, and arms 5 extending from four sides of the measurement part 3 in a direction of applying a tensile load to the measurement part 3 and including a plurality of slits 7 formed parallel to the extending direction, is used for a biaxial tensile test for applying the tensile load in two orthogonal directions to the measurement part 3 via the four arms 5 to acquire a stress-strain relation under biaxial stress. The cruciform tensile specimen 1 with the slits comprises reinforcing materials 11 joined to cover the respective arms 5 and reinforcing the arms 5, where the reinforcing materials 11 are longer than at least the slits 7 in the direction applying the tensile load in the arms 5, and formed not to close the slits 7 by covering the arms 5.SELECTED DRAWING: Figure 1
Owner:JFE STEEL CORP
Method and device for obtaining forming limit of metal sheet
PendingEP4517294A1Material strength using steady bending forcesInvestigating material ductilityStructural engineeringMetal sheet
In a metal sheet forming limit acquisition method according to the present invention, a test piece 100 of a metal sheet is bulge-formed at various bending deformation degrees by utilization of a plurality of hemispherical punches 11a having different curvatures at tip portions 11a1, and a forming limit of the metal sheet which limit is represented by a relationship between a bending deformation degree of the bulge-formed test piece 100 and a maximum principal strain and a minimum principal strain of the test piece 100 bulge-formed at the bending deformation degrees is acquired.
Owner:JFE STEEL CORP
Method for judging cold-rolled strip breakage and edge cracks based on mechanical properties of strip steel
ActiveCN119092017Areduce generationReduce production failureMaterial strength using tensile/compressive forcesTesting metalsStrip steelUltimate tensile strength
The invention discloses a method for judging cold-rolled strip breakage and edge cracks based on strip steel mechanical properties. The method for judging the cold-rolled strip breakage and the edge crack based on the mechanical property of the strip steel comprises the step of judging whether the strip breakage and the edge crack occur or not during cold rolling of the strip steel on the basis of fully considering the yield strength, the tensile strength and the elongation of the strip steel. According to the method, the cold rolling strip breakage and edge crack defects of the strip steel can be effectively reduced, the rolling strip breakage and edge crack defects of the continuous cold rolling mill can be effectively prevented, the product quality is improved, the production faults are reduced, and the production efficiency of the cold rolling mill is improved.
Owner:新余钢铁股份有限公司
Force ductility measuring instrument for asphalt material
The invention discloses a force ductility measuring instrument for an asphalt material, and relates to the technical field of detection equipment. Comprising a water bath box, a fixing plate is arranged at one end of an inner cavity of the water bath box, a plurality of evenly-distributed fixing columns A are fixedly arranged on the upper portion of the fixing plate, a stretching part is arranged in the inner cavity of the water bath box, a plurality of evenly-distributed asphalt samples are arranged between the fixing columns A and the stretching part, and the stretching part is connected with a control center. The adjusting assembly can adjust the distance between the fixed plate and the sliding assembly, so that the asphalt sample cannot be bent and stretched, and the ductility detection result of the asphalt sample is effectively improved; when a top block of the sliding assembly is in contact with a pressure sensor, the control center starts to record displacement data of the asphalt sample, and the ductility detection result of the asphalt sample is further improved; the sliding assembly can effectively improve the stress detection result of the asphalt ductility detector on the asphalt sample; the pressure sensor is matched with the control center to record the displacement distance of the fractured asphalt sample, manual operation recording is not needed, and operation is easy and convenient.
Owner:广东省路桥建设发展有限公司 +1
Method for identifying constriction limit strain of metal plate
A method for identifying a necking limit strain of a metal sheet according to the present invention includes a step (S1) of measuring the distribution of strain in a tensile orthogonal direction in a tensile deformation process of a notch root 5a for two or more types of sheet specimens 1 having a notch geometry 5 in a portion of a sheet edge 3; a step (S3) of obtaining a strain increment ratio of the notch root 5a in the tensile deformation process and a strain gradient in the tensile orthogonal direction; a step (S5) of obtaining necking limit strain at which necking occurs in the notch root 5a based on the strain increment ratio in the tensile deformation process; and a step (S7) of identifying the necking limit strain as a function of the strain gradient from the relation between the necking limit strain obtained for the two or more types of sheet specimens 1 and the strain gradient at that time.
Owner:JFE STEEL CORP
Battery diaphragm extension device
InactiveCN119935768ASupporting apparatusInvestigating material ductilityAir volumeElectrical battery
The invention belongs to the technical field of battery manufacturing, and particularly relates to a battery diaphragm extending device which comprises a lifting device fixedly assembled at the top of a base station, a lifting table is fixedly assembled on one side of the lifting device, and connecting plates are fixedly assembled at the top of the base station and the bottom of the lifting table. A simulation bin for enclosing a diaphragm is fixedly connected between the two connecting plates; according to the invention, through the movement of the diaphragm discharging frame, a plurality of diaphragms can be brought into the simulation bin in batches to realize the batch tensile test of the diaphragms, the opening and closing of the electromagnetic valve can be controlled, and a heating test solution in the multichannel sprayer is sprayed into the bin when the simulation bin is closed to realize the performance test of the diaphragms in a complex environment; the sealing door can be driven to control the on-off of the air volume of the suction filter, so that when the sealing door is closed and opened, the solution gas in the simulation bin is blocked and sucked respectively, the dispersion range of the solution gas is controlled, and the harm to a human body is prevented.
Owner:DONGGUAN YUNYUE NEW MATERIALS TECHNOLOGY CO LTD
Heat-treatment-free aluminum alloy casting production process
ActiveCN120425206AMaterial strength using tensile/compressive forcesInvestigating material ductilityInjection pressureIngot
The invention provides a heat treatment-free aluminum alloy casting production process, and belongs to the technical field of alloys, and the heat treatment-free aluminum alloy casting production process comprises the following steps: S1, alloy preparation; s2, smelting and refining are conducted, after pure aluminum ingots are molten, heating and mixing are conducted, powder spraying refining and degassing treatment are conducted, and the dosage of a refining agent accounts for 0.1%-0.3% of the mass of molten liquid; s3, die-casting forming is conducted, specifically, a high-vacuum die-casting process is adopted, the injection pressure is 80-150 MPa, the melt pouring temperature is 680-720 DEG C, and the die preheating temperature is 150-250 DEG C; s4, natural aging treatment; the specific parameters of the adding amount of a refining agent, the injection pressure and the pouring temperature are optimized through a three-factor three-level orthogonal test, the optimal machining process parameters are determined to be 0.20% of the refining agent, 120 MPa of the injection pressure and 700 DEG C of the pouring temperature by detecting the tensile strength, the ductility and the hardness of the alloy, at the moment, the tensile strength of the alloy is improved to 389 MPa, the ductility is improved to 8.5%, and the hardness is improved to HV65.8; and compared with the alloy before optimization, the alloy is increased by 9.0%, 26.8% and 2.3% respectively.
Owner:NINGBO BAIYI AUTOMOTIVE PARTS
Colored polyester yarn elasticity detection device
The utility model belongs to the technical field of polyester yarn elasticity detection, and discloses a colored polyester yarn elasticity detection device which comprises a workbench, a linear motor and a moving seat installed on the linear motor, a bottom plate is fixedly connected to the workbench, L-shaped plates are fixedly connected to the bottom plate and the moving seat, and the L-shaped plates are fixedly connected to the linear motor. And a winding fixing mechanism is mounted on each L-shaped plate. According to the polyester yarn winding device, the two ends of polyester yarn can be wound on the surfaces of the two winding frames respectively, then the air cylinders are used for controlling movement of the extrusion plates to extrude the winding frames, the polyester yarn is extruded into the extrusion grooves through the extrusion rods, and therefore the wound polyester yarn is extruded and fixed, and the polyester yarn does not need to be knotted and fixed by personnel; and when the polyester yarn is taken down, an air cylinder is used for controlling an extrusion plate to be far away from a winding frame, then a shifting block is rotated to control a second expansion plate and two first expansion plates to move into the winding frame, and therefore personnel can easily and directly take down the polyester yarn.
Owner:NINGBO ZHUOCHENG CHEM FIBRE CO LTD
Creep life prediction method of heat-resistant steel welded joint and related device
PendingCN119354725AMaterial strength using tensile/compressive forcesInvestigating material ductilityClassical mechanicsMetallic materials
The invention discloses a creep life prediction method of a heat-resistant steel welded joint and a related device, and relates to the field of metal material high-temperature mechanical property research, and the creep life prediction method comprises the following steps: acquiring creep test data of a plurality of heat-resistant steel welded joint samples, and grouping to obtain creep test data under different cracking forms; the threshold stress of cracking form transformation is determined through creep test data; the creep test data under each cracking form is used for determining all coefficients in a Marson-Miller equation corresponding to each cracking form; determining the cracking form according to the comparison of the loading stress applied by the to-be-tested heat-resistant steel welding joint in the creep test and a threshold value; and predicting the creep life of the to-be-tested heat-resistant steel welded joint by using the Marson-Miller equation of the cracking form corresponding to the to-be-tested heat-resistant steel welded joint. The method can accurately predict the creep life of the heat-resistant steel welded joint.
Owner:CHINA SPECIAL EQUIP INSPECTION & RES INST +1
Asphalt elongation detection device for highway construction
ActiveCN222353656Ueasy to useInvestigating material ductilityArchitectural engineeringStructural engineering
The utility model relates to the technical field of highway construction, in particular to a highway construction asphalt extensibility detection device, which comprises a support mechanism and a detection mechanism for detecting asphalt extensibility, and the detection mechanism is mounted above the support mechanism. By arranging the detection mechanism, the air cylinder is started after preparation work is completed, the air cylinder operates to drive the moving table to move, the moving table drives the second clamp to move through the moving base and the second guide column, asphalt is stretched, when the moving base moves, the water-based marking pen moves along with the moving base, and the water-based marking pen moves to draw a straight line on the scale plate; when asphalt is broken, the air cylinder is controlled to stop running, then the electric push rod is controlled to contract so that the water-based marking pen can be separated from the scale plate, the moving distance of the second clamp can be obtained according to the length of the straight line on the scale plate, the moving distance of the second clamp is recorded in the mode, and the recording result is not affected by impurities generated by asphalt breaking.
Owner:HUNAN ZHONGKAI TESTING CO LTD
Cable thermal extension test device
The invention relates to a cable thermal extension test device which comprises a rack and a clamping assembly, a set of supports are symmetrically arranged on the two sides of the upper portion of the rack, a driving assembly is arranged in the middle of the upper portion of the rack, movable adjusting assemblies are arranged in front of the supports and connected with the supports in a sliding mode, and rotating assemblies are arranged on the inner sides of the movable adjusting assemblies. The rotating assembly is in power connection with the driving assembly; the outer sides of the upper portions of the rotating assemblies are connected with low-gyroscopic-moment rotating joints installed on the rack through connecting frames, rotating chucks are arranged on the inner sides of the upper portions of the rotating assemblies, and clamping assemblies are clamped in the rotating chucks. A portal frame is arranged behind the support, an infrared heating pipe assembly is installed on the portal frame, a cable to be tested is arranged in the infrared heating pipe assembly, and the two ends of the cable to be tested are connected with clamping assemblies respectively; the clamping device has the advantages of being reasonable in structure, rapid and convenient to clamp, firm and reliable in clamping and high in practicability.
Owner:STATE GRID HENAN ELECTRIC POWER COMPANY ANYANG POWER SUPPLY +2
A copper foil tensile strength and elongation detection device and detection method
ActiveCN118837204BDoes not take up production spaceMeet the demand for accurate and efficient detectionWithdrawing sample devicesMaterial strength using tensile/compressive forcesStructural engineeringCopper foil
The present invention provides a copper foil tensile strength and elongation detection device and detection method, including a detection mounting frame, a detection auxiliary device is arranged in the middle of the detection mounting frame, guide components are installed on both sides of the detection auxiliary device, the detection auxiliary device is rotatably connected to the detection mounting frame, and a detection channel for copper foil to pass through is formed between the detection auxiliary device and the two guide components; the circumferential side wall of the detection auxiliary device includes a sampling surface and a connecting surface, the sampling surface is a flat surface, the sampling surface surface is provided with a concave installation opening, and a retractable sampling device is installed inside the installation opening. The device can cut and sample various positions on the surface of the copper foil, and the detection result is more accurate; at the same time, the overall detection device is located on the conveying path of the copper foil, occupies a small volume, and has a simple operation and control process.
Owner:JIANGSU MINGFENG ELECTRONIC MATERIALS CO LTD
Multi-angle adjustable testing machine clamping device
ActiveCN223166468UMaterial strength using tensile/compressive forcesInvestigating material ductilityClassical mechanicsStructural engineering
The utility model discloses a multi-angle adjustable testing machine clamping device, and relates to the technical field of clamping devices. Comprising a bottom plate, symmetrically distributed moving seats are arranged over the bottom plate, rotating discs are rotationally arranged in the moving seats, a plurality of driving grooves distributed in an annular array are formed in the rotating discs, driving blocks are slidably arranged in the driving grooves, moving plates are fixedly arranged at one ends of the driving blocks, and fixed wheels are fixedly arranged at the ends, close to each other, of the moving plates; wherein driving rods are fixedly arranged at the ends, away from the fixed wheels, of the two moving plates, one end of each driving rod slidably penetrates through one side wall of the corresponding moving seat to be arranged outside, and a frame is fixedly arranged on the upper surface of the outer portion of the bottom plate. By driving the multiple fixing wheels to be tightly attached to the tail end of the cable, it can be ensured that the cable is clamped and fixed, the situation that the cable is loosened in the testing process is prevented, and the testing precision of the cable is improved.
Owner:SHANDONG JINGCHENG IND AUTOMATION EQUIP CO LTD
Zinc alloy extension detection device
ActiveCN222979318UMaterial strength using tensile/compressive forcesInvestigating material ductilityZinc alloysTensile testing
The utility model belongs to the technical field of alloy detection, and particularly relates to a zinc alloy extension detection device which comprises a working table, moving frames are connected to the two sides of the top of the working table in a sliding mode, clamping blocks are fixedly connected to the inner sides of the two moving frames, and pressing plates are connected to the interiors of the clamping blocks in a sliding mode. The utility model provides a zinc alloy extension detection device, and solves the problems that in the prior art, the detection of a zinc alloy material is generally carried out in a stretching manner, when a sample is stretched until the sample is fractured, the extension performance of the material is determined by measuring stress, a strain curve and a final fracture point, and the detection accuracy is high. However, a large amount of extrusion force is also applied to zinc alloy in daily use, an existing detection device cannot simultaneously carry out a pressure resistance test and a tensile test, and an external detection tool is needed to carry out a secondary test, so that time and labor are wasted, the detection efficiency is reduced, and the final detection accuracy is reduced.
Owner:JIAOZUO SHENGSHIDA LIGHT ALLOY TECH
Stretching head structure for viscosity and toughness test of high-viscosity asphalt
The utility model provides a stretching head structure for a viscosity and toughness test of high-viscosity asphalt, which relates to the technical field of asphalt tests and comprises a sample container and a connecting sleeve, a connecting rod is inserted into the inner surface of the connecting sleeve, and the bottom of the connecting rod is fixedly connected with a stretching head body. According to the utility model, the stretching head body can be accurately aligned with the center of a sample container under the matching of the support frame, the positioning hole and the positioning rod, and the position of the connecting rod in the connecting sleeve can be adjusted under the matching of the spring, the limiting rod, the adjusting hole and the sliding rod, so that the position of the stretching head body is adjusted; by adopting clamping adjustment, the problem that threaded connection needs to be replaced after being used for multiple times is avoided, under the assistance of the semi-sphere and the arc-shaped groove, the contact area between the stretching head body and an asphalt sample is increased, a certain stress dispersion effect can be achieved in the stretching process, and therefore the testing accuracy and stability are improved.
Owner:CHINA FIRST HIGHWAY ENGINEERING CO LTD +1
Method for testing performance of high-performance PE film
InactiveCN119688652AMaterial strength using tensile/compressive forcesTransmissivity measurementsConvertersTest performance
The invention provides a method for testing the performance of a high-performance PE film, and relates to the technical field of PE film testing. The method for testing the performance of the high-performance PE film comprises the following steps: S1, taking a PE film with the length and the width of 1m, clamping the four edges of the PE film by using a movable clamp, and horizontally spreading the PE film; s2, a movable point-shaped light source is installed below the PE film, and light rays generated by the point-shaped light source face the PE film; and S3, a movable photosensitive sensor is installed below the PE film and used for receiving light, and the photosensitive sensor is externally connected with a signal converter and a computer. According to the invention, by utilizing a single light transmission test, not only can the light transmission of the high-performance PE film be tested, but also the uniformity, ductility, tensile resistance, heat resistance, cold resistance, tear resistance and elongation at break of the high-performance PE film can be detected, so that the test cost is low, the test time is short, the data volume embodied by a single test is richer, and the test efficiency is improved. And the test is more comprehensive.
Owner:TONGCHENG JIASHENG PACKAGING CO LTD
Thin film tensile strength and elongation testing device
ActiveCN222913371UMaterial strength using tensile/compressive forcesInvestigating material ductilityThin membraneStructural engineering
Owner:KUNSHAN JINRUIAN ELECTRONIC TECH CO LTD
Finished product quality detection device for secondary aluminum ingot casting product
ActiveCN120160901AAnalysing solids using sonic/ultrasonic/infrasonic wavesMaterial strength using tensile/compressive forcesIngotDuctility
The invention relates to the field of secondary aluminum ingot product finished product quality detection, in particular to a secondary aluminum ingot product finished product quality detection device which comprises a shell. A partition plate is fixed in the shell, a translation assembly is arranged below the partition plate, each clamping assembly is provided with a hardness detection assembly, and three flaw detection assemblies and three deformation detection assemblies corresponding to the three centering assemblies respectively are arranged in the shell. During detection, an extrusion head is recessed into the end face of an aluminum ingot block under the pushing action of a first spring, and when the aluminum ingot block deforms due to stretching, second sliding rods located on the upper side and the lower side of the aluminum ingot block extend under the action of a third spring. The resistance value between the second sliding rod after extending and the second lantern ring is compared with the initial resistance value to obtain the telescopic length of the second sliding rod after the aluminum ingot block is deformed, then the ductility of the aluminum ingot block after being stretched is obtained, and the effect of multi-aspect detection is achieved in a matched mode.
Owner:JIANGSU HAIGUANG METAL
Die for measuring low-pressure casting solidification rate of aluminum alloy and implementation method of die
PendingCN119534542Araise quality standardsImprove quality and efficiencyMaterial analysis using wave/particle radiationMaterial heat developmentPressure castingThermocouple device
The invention discloses a mold for measuring the low-pressure casting solidification rate of aluminum alloy and an implementation method of the mold, and the method comprises the following steps: 1, installing a thermocouple, and calibrating the thermocouple; 2, defining experimental parameters, and adjusting a mold cooling system; 3, recording temperature data in real time, and analyzing and evaluating the temperature data; 4, cutting the standard mechanical sample, and carrying out mechanical property test and microstructure characterization; and 5, feeding back to production according to an experimental result, optimizing an experimental process, and improving the product quality. The temperature distribution in the casting can be accurately measured in real time, so that the solidification rate is indirectly controlled and measured, and the quality and the production efficiency of the casting are remarkably improved by monitoring the solidification process in real time.
Owner:YANSHAN UNIV +1
Press forming fracture determination method, device and program, and method for manufacturing press formed part
PendingEP4566737A4Geometric CADMaterial strength using steady bending forcesMechanical engineeringPhysics
A press forming fracture judgment method according to the present invention acquires a forming limit of a metal sheet which limit is expressed by a relationship between a maximum principal strain and a minimum principal strain of a test piece 100 bulge formed at various bending deformation degrees and a bending deformation degree (P1), and determines presence or absence of fracture generation in a press formed part based on the acquired forming limit of the metal sheet and the maximum principal strain, the minimum principal strain, and the bending deformation degree which are calculated for a press formed part (P3).
Owner:JFE STEEL CORP
Post-welding adjusting and repairing method for aluminum alloy bracket of railway vehicle
PendingCN121718809AShaping toolsMaterial strength using tensile/compressive forcesWelding residual stressStructural engineering
The invention discloses a post-welding adjusting and repairing method for an aluminum alloy bracket of a railway vehicle. The post-welding adjusting and repairing method comprises the steps that the first deformation amount of a deformation position is measured; preparing a plurality of first tensile samples, and performing flame heating adjustment at a preset flame heating temperature; performing a tensile test on the first tensile sample; establishing a relationship between the mechanical property and the flame heating temperature, and obtaining a target flame heating temperature; manufacturing a second tensile sample, and performing deformation treatment and mechanical adjustment treatment for preset times; performing a tensile test on the second tensile sample, establishing a relationship between the mechanical property and the times of deformation treatment and mechanical adjustment treatment, and obtaining a target mechanical adjustment time; flame heating adjustment and mechanical adjustment are conducted on the aluminum alloy bracket according to the target flame heating temperature and the target mechanical adjustment frequency; and manufacturing a fatigue sample, carrying out a fatigue test, and evaluating the safety of adjustment and repair. According to the method, flame heating adjustment and mechanical adjustment are combined, welding residual stress can be released, and deformation deviation can be accurately corrected.
Owner:青岛中车四方轨道车辆有限公司
Intelligent beam fiber strength tester and application method
ActiveCN116202875BMaterial strength using tensile/compressive forcesInvestigating material ductilityInformatizationCotton fibre
The present application relates to the technical field of cotton fiber detection. A kind of intelligent beam fiber strength tester, including cabinet, industrial computer, sliding table module is provided in cabinet, sectional material frame, air cylinder, beam fiber clamping mechanism, stepper motor, lever type pull rod, force sensor, displacement sensor, resistance detection plate, A / D acquisition conversion module;The application method of the tester, steps include: under normal environmental conditions, beam fiber clamping mechanism clamps fiber sample, obtains moisture regain R by resistance moisture regain conversion program conversion;Stepper motor drives lever type pull rod to stretch sample, data is made into the tensile curve F (e) of beam fiber sample-e by industrial computer, and machine learning model predicts the corrected breaking strength value and elongation rate.The present application is simple and reasonable in structure, can realize the quick and accurate measurement of cotton beam fiber breaking strength value and breaking elongation rate under different humidity conditions in normal environment, is high in informatization degree, economic and practical, and improves the accuracy of test result.
Owner:SHIHEZI UNIVERSITY
Fatigue test fixture and equipment
ActiveCN222318663UMaterial strength using tensile/compressive forcesMaterial strength using steady bending forcesTest sampleClassical mechanics
The utility model discloses a fatigue test fixture and equipment, including a first clamp assembly and a second clamp assembly, the first clamp assembly moves along a first direction, the first clamp assembly includes a first clamp seat and a first sample fixing table, the first sample fixing table is installed on the first clamp seat through a first rotating shaft, and the second clamp assembly is installed on the second clamp seat through a second rotating shaft. The second clamp assembly comprises a second clamp seat, the second clamp seat is mounted on the base, a force sensor is arranged between the second clamp seat and the base, and the second clamp seat is provided with a second sample fixing table and a third sample fixing table; the first sample fixing table and the second sample fixing table can limit a test sample between the first clamp assembly and the second clamp assembly in the first direction, and the first sample fixing table and the third sample fixing table can limit the test sample between the first clamp assembly and the second clamp assembly in the second direction. According to the utility model, the test sample can be tested in two fatigue test modes, namely single tensile fatigue and plane bending fatigue.
Owner:GAC HONDA AUTOMOBILE CO LTD +1
Malleability detection structure for PA66 plastic
ActiveCN222506048UPlastic recyclingInvestigating material ductilityElectric machineryStructural engineering
The utility model discloses a ductility detection structure for PA66 plastic, which belongs to the technical field of ductility detection of the PA66 plastic, and is characterized by comprising a fixed cabinet, the top of the fixed cabinet is provided with an annular groove, the top of the fixed cabinet is fixedly connected with a heating assembly, the front side of the fixed cabinet is rotatably connected with a protective plate, and the protective plate is fixedly connected with the annular groove. The bottom of the inner wall of the fixed cabinet is fixedly connected with a limiting box, the left side and the right side of the inner wall of the limiting box are rotationally connected with two-way screws, the surfaces of the two-way screws are rotationally connected with a fixed assembly, the surface of the fixed assembly is slidably connected with the inner wall of the limiting box, and the right side of the fixed cabinet is fixedly connected with a power motor. The problems that when an existing ductility detection structure is used for detecting PA66 plastic, most of the existing ductility detection structures can only detect the ductility of the PA66 plastic at the normal temperature, and consequently ductility detection data of the PA66 plastic are not accurate enough are solved.
Owner:XIAMEN YIKOMA TECH CO LTD
A steel bar elongation detection system and its use method
ActiveCN114166131BMaterial strength using tensile/compressive forcesUsing optical meansElectrical controlSystem structure
The present invention relates to the field of steel bar detection technology, specifically a steel bar elongation detection system and a method of using the same, including an electric control box and a brake base, a symmetrically distributed supporting structure is slidably arranged on the brake base, the supporting structure includes a transverse sliding structure and a longitudinal sliding structure, a longitudinal detection structure and a plurality of third infrared detectors are arranged between the two transverse sliding structures, one end of the longitudinal detection structure is fixedly connected to the electric control box through a second telescopic rod, a battery is arranged inside the electric control box, a central processing chip is connected to the battery, and the central processing chip establishes communication connections with the longitudinal detection structure and the third infrared detector respectively. The detection system provided by the present invention has a simple structure, a small size, and is flexible to use. It does not require going back and forth to the laboratory to wait for the detection results, and it can also avoid errors caused by manual detection, thereby greatly improving the convenience and accuracy of use.
Owner:ZHENGZHOU TIANHONG ENG INSPECTION CO LTD
Card clothing production on-line detection device
PendingCN119643327AImprove scalabilityAdjust in timeMaterial strength using tensile/compressive forcesInvestigating material ductilityMechanical engineering
The invention discloses a card clothing production on-line detection device which comprises a conveying belt, a placing plate is arranged at one end of the conveying belt, vertical plates are arranged at the two ends of the placing plate, supporting legs are detachably connected to the positions, close to the edges of the two ends, of the bottom of the placing plate, a pressing plate is arranged above the placing plate, and the size of the pressing plate is the same as that of the placing plate. The card clothing detection device has the advantages that card clothing is conveyed to the placement plate through the conveying belt, at the moment, the two ends of the card clothing can enter the position between the movable clamping plate and the fixed clamping plate, in order to guarantee detection, the ends for clamping the movable clamping plate and the fixed clamping plate can be reserved during card clothing production, and whether the card clothing is removed or not can be selected according to needs after detection; after the ends are clamped, the double-end motor is started to drive the screw rod to rotate, so that the two vertical plates are controlled to be gradually away from the placing plate, card clothing can be pulled, detection of the ductility of the card clothing is achieved, obtained data are transmitted to a computer through a tension sensor, and timely adjustment is facilitated.
Owner:LIANYUNGANG LIANRUI CARD CLOTHING CO LTD