61 results about "Material Crack" patented technology

The invention discloses a research method for a crack evolution law of fractured rock under thermal-mechanical coupling, and belongs to the technical field of rock mechanics. Aiming at the problem that most indoor tests and numerical simulation at present still lack systematic research on crack initiation, polymerization and failure behaviors of cracks in a multi-crack rock mass under the action of high temperature-stress coupling, the method comprises the following steps: defining an interaction coefficient and a thermal damage influence coefficient between the cracks on the basis of a tangential stress distribution theory around the cracks; establishing a tangential stress model sum of the inner and outer surfaces of the crack comprehensively considering the coupling effect of the two to predict a potential crack initiation position; based on a crack mode displacement decomposition method, defining a displacement ratio coefficient gamma, and quantifying a displacement field of rock material cracks; on the basis, the rock sample is subjected to mechanical test and PCF numerical simulation, and the crack evolution law of the rock sample containing the prefabricated crack under thermal-mechanical coupling is researched. Theoretical support and experimental basis can be provided for stability evaluation and safety control of deep high-temperature rock mass engineering.

The invention relates to the technical field of crack monitoring, and discloses a bridge crack intelligent electric monitoring method and system, and the method comprises the steps: carrying out the real-time collection of an electric signal of a bridge structure through a preset conductive fiber bundle, and obtaining a first signal set; according to the first signal set, environment interference signals are analyzed in combination with pre-acquired environment data, and the first signal set is decoupled to obtain a second signal set; analyzing the signal growth condition and the step sudden change condition of the second signal set, extracting corresponding signal features, and identifying the crack edge to obtain a crack edge identification result; according to the crack edge identification result, evolution prediction is carried out on the expansion condition of the crack through a preset material crack coupling model, and a crack parameter prediction result is obtained; according to the method, the signal acquisition efficiency can be improved, the crack identification monitoring efficiency and accuracy can be improved, evolution prediction can be performed on the crack expansion condition, safety early warning can be performed on the crack condition, and further expansion of the crack can be prevented.

The invention discloses a composite material crack propagation method, device and equipment and a storage medium. Comprising the following steps: constructing a finite element model of a composite material test piece, positioning a crack tip node in the finite element model, establishing a local coordinate system according to the crack tip node, and calculating a crack jump length and a unit vector; node force and opening displacement under the global coordinate system are extracted based on a finite element model, and the node force and the opening displacement are converted into local coordinate system components based on unit vectors; and calculating each energy release rate component according to the local coordinate system component and the crack jump length, and substituting each energy release rate component into a preset fracture criterion formula to generate a crack propagation result of the composite material test piece. Through finite element modeling, the structure and crack position of the composite material can be accurately represented, a basic model is provided for subsequent expansion analysis, the accuracy of energy release rate calculation is improved, the fracture criterion application condition is optimized in combination with the crack jump characteristic, and the crack expansion simulation result is closer to the actual working condition.

The invention discloses a method for evaluating the crack self-repairing performance of a cement-based material, and belongs to the field of cement-based materials. Comprising the following steps: (1) preparing a cement-based material test piece, and curing in a curing box; (2) manufacturing a through crack in the maintained test piece by using a splitting method, and placing the through crack in tap water to obtain a repaired test block; and (3) dividing the test block obtained in the step (2) into two halves along the crack, uniformly dropwise adding a copper sulfate solution along the crack surface, standing, and observing the color of each region. The evaluation method further comprises the following steps: acquiring a crack surface image, processing the crack surface image by using a binarization method, and calculating a crack surface repair rate. According to the evaluation method for the crack self-repairing performance of the cement-based material, the effect of qualitatively and quantitatively distinguishing the distribution condition of the hydrogel in the crack area can be achieved.

The invention relates to the technical field of crack monitoring, and discloses a metal material crack propagation monitoring device and method, a storage medium and a program product.The device comprises control equipment, acoustic emission equipment, ultrasonic equipment and infrared collection equipment, the acoustic emission equipment is arranged on a to-be-detected metal sample, and the ultrasonic equipment is arranged on the control equipment; the control equipment is used for receiving the acoustic emission signal, judging whether the to-be-detected metal sample is deformed or not according to the acoustic emission signal, and controlling the ultrasonic equipment and the infrared acquisition equipment after detecting that the to-be-detected metal sample is deformed; the ultrasonic equipment is arranged on the to-be-detected metal sample and is used for sending an ultrasonic excitation signal to the to-be-detected metal sample; the infrared acquisition equipment is used for acquiring a surface thermal wave signal of a to-be-detected metal sample and generating an infrared image; and the control equipment is also used for receiving and analyzing the infrared image to obtain crack information of the metal sample to be detected. The method can improve the crack propagation detection accuracy.

The invention discloses a lining plate structure and a manufacturing method thereof, the lining plate structure comprises an outer lining plate, an inner lining plate, a connecting piece and a lining plate fixing piece, one end of the connecting piece is used for being pre-buried in a foundation, and the other end of the connecting piece is used for being connected with the outer lining plate or the inner lining plate; the inner lining plate is provided with a first inner surface and a first outer surface which are opposite in the thickness direction. The outer lining plate is provided with a second inner surface and a second outer surface which are opposite in the thickness direction; the ends of the inner lining plate and the outer lining plate are provided with lap joint positions, and part of the first outer surface makes contact with part of the second inner surface; the lining plate fixing piece is located at the lap joint position, and the lining plate fixing piece is provided with a fixing part fixed to the first outer surface of the inner lining plate and a contact part abutting against the second outer surface of the outer lining plate; at least in the width direction, a preset gap used for meeting the requirement for deformation of the outer lining plate and / or the inner lining plate is formed between the outer lining plate and the lining plate fixing piece. The heat-resistant material can be effectively protected, and meanwhile the problem of tension fracture of the foundation and the heat-resistant material is solved.

This application relates to the field of material crack propagation testing technology, and in particular to a method and apparatus for testing crack propagation of metallic materials in a fluid environment. The method includes conducting crack propagation tests in conventional air, room temperature, high temperature, and high pressure fluid environments, simultaneously measuring using a COD gauge, an LVDT sensor, and a force sensor, and calculating C=>C. LL The mapping relationship is then established, and the elastic modulus E of the specimen is corrected using a COD gauge. The compliance coefficient B is corrected using an LVDT sensor. Afterwards, the test environment is established, and the data from the LVDT sensor, the corrected value of the elastic modulus E, and the secondary compliance correction coefficient are measured. This is then processed via C=>C. LL The crack length can be calculated using the mapping relationship and the crack length calculation formula. Through the above steps, the goal of conducting crack propagation tests on metallic materials in a fluid environment is achieved, while ensuring the accuracy of the test results.

The invention discloses a thermoplastic insulating material cracking device and a use method, and relates to the technical field of insulating material cracking equipment. The device comprises an auger roller and a resistance heating pipe, a hollow mounting channel is formed in the auger roller, and the mounting channel is used for containing the resistance heating pipe, so that heating and cracking are synchronously conducted when cracking materials are conveyed by the auger roller. Continuous and uniform feeding is achieved through conveying of the auger roller and synchronous heating of the resistance heating pipe in cooperation with the U-shaped groove and the auger rod, the problems of gathering and caking caused by one-time feeding of raw materials in a traditional device are solved, the raw materials are continuously turned over and uniformly heated in the conveying process, the pyrolysis sufficiency is remarkably improved, and the quality of pyrolysis products is improved.

The invention relates to the technical field of new materials, in particular to an admixture as well as a preparation method and application thereof. The admixture is prepared from the following components in parts by mass: 1.0 to 5.0 parts of a complexing agent, 1.5 to 8.0 parts of a calcium ion compensating agent, 1.0 to 8.0 parts of a crystallization accelerant, 3.0 to 10.0 parts of a slow release agent, 5.0 to 15.0 parts of an active mineral admixture, 15.0 to 28.5 parts of an expanding agent, 20.0 to 40.0 parts of Portland cement and 10.0 to 20.0 parts of quartz sand. The admixture can realize self-repairing of cement-based material cracks in humid and water seepage environments, has the functions of improving matrix strength and waterproof performance, reducing hydration heat, delaying temperature peak appearance and the like, and is wide in application range.

The present application belongs to the technical field of wind power generation, and specifically relates to a wind power tower material crack propagation prediction method and system, which is suitable for fatigue life evaluation of large supporting structures in the wind energy industry. The method comprises: deploying a multi-source heterogeneous sensor network to collect strain, acoustic emission and environmental load data; constructing a digital twin high-fidelity finite element submodel to obtain a dynamic stress intensity factor; constructing a deep neural network, embedding the Paris law of fracture mechanics in the form of residual into the loss function to form a physical information neural network, and realizing crack propagation rate prediction; using the extended finite element method combined with the level set function and the maximum circumferential stress criterion to dynamically track the three-dimensional space expansion path of the crack; combining Monte Carlo simulation and recursive Bayesian update to evaluate the remaining life and trigger graded early warning. The present application solves the problems of insufficient fusion of physical mechanisms and data-driven in the prior art, low prediction accuracy under small samples, and lack of crack space path tracking.

The application discloses a kind of weak magnetic signal characteristic research methods for ferromagnetic material, comprising: according to the magnetomechanics model in the step of establishing magnetomechanics model, the verification of magnetomechanics model is carried out by pipeline weld model, pipeline weld crack model and pipeline base material crack model in the step of initial pressure simulation calculation, then according to the magnetomechanics model after verification, the step of pressurization simulation calculation is carried out, the stress damage degree of magnetomechanics model of pipeline weld model, pipeline weld crack model and pipeline base material crack model is obtained, based on the step of pressurization simulation calculation, by gradient energy factor calculation step and introduction same rate growth rate step, the stress damage degree of pipeline weld model, pipeline weld crack model and pipeline base material crack model is realized quantitative reflection.This application establishes magnetomechanics model, and introduces gradient energy factor, better reflects the stress damage of pipeline weld model, pipeline weld crack model and pipeline base material crack model.

The utility model discloses a zero-phase deformation tensile testing device which is provided with a pedestal, a fixed cushion block and a sliding cushion block are arranged on the pedestal, the fixed cushion block is fixedly arranged on the pedestal, one side, far away from the fixed cushion block, of the sliding cushion block is connected with a tensile screw rod, and the sliding cushion block is connected with the tensile screw rod. The stretching screw rod is connected with a screw rod seat through a rotating nut, and a rotating rod is arranged at the outer end of the stretching screw rod; a first penetrating screw rod and a second penetrating screw rod are respectively arranged on the fixed cushion block and the sliding cushion block; a first pressing strip and a second pressing strip are respectively arranged on the first penetrating screw rod and the second penetrating screw rod in a penetrating manner; a first test block and a second test block are respectively arranged on the fixed cushion block and the sliding cushion block in a penetrating manner; the device disclosed by the utility model can be combined with reality, simulates the cracking condition of the waterproof material under the real condition, carries out a tensile tear experiment, simulates the full adhesion condition by using the epoxy resin material and the test block, and can accurately and intuitively test the tensile property of the material.

The invention discloses a discontinuous displacement fracture phase field calculation method for a composite material. The method comprises the following steps: S1, establishing a strain energy density model of the composite material; s2, based on the strain energy density model, calculating a displacement control equation, a phase field control equation and a damage control equation according to a variational method; s3, performing one-dimensional analysis on the strain energy density model, the stress in the displacement control equation, the phase field control equation and the damage control equation to obtain an analytic equation; and S4, calculating the discontinuous displacement fracture phase field of the composite material based on the analytical equation. And S5, compiling the steps S1 to S4 into a UEL user subprogram, integrating the UEL user subprogram to an ABAQUS finite element platform, and outputting a crack path diagram of the composite material. According to the method, fracture behaviors such as interface debonding facing the composite material can be correctly captured without a particularly small grid scale while the numerical precision is ensured, and a composite material crack path prediction map is obtained.

This invention provides a method for determining the critical state of cracks in viscoelastic materials under dynamic interaction of cracking and healing. Specifically, it involves: establishing a geometric model of the energy change region under dynamic interaction of cracking and healing; constructing energy dissipation and recovery strain energy models for the apparent and actual configurations of the viscoelastic material sample during the loading stage; determining the size and net increase in damage density of the viscoelastic material sample under dynamic interaction of cracking and healing; constructing a model relating the recovery strain energy and the net increase in damage density during the healing stage; using the sum of the increase in volume free energy due to viscoelastic failure volume recovery and the decrease in surface energy due to crack healing as the total free energy increment; calculating the rate of change of the free energy increment; and determining the critical state of the crack based on this method. This invention provides a basis for determining the critical transition of crack instability propagation in materials with viscoelastic and healing properties.

The application discloses a power station boiler main steam pipeline safety evaluation method and system, and the method comprises the following steps: obtaining material information of a power station boiler main steam pipeline, wherein the material information comprises crack length and cycle load times of the material; a nonlinear creep damage model for describing material creep is set, and according to the material information, a material creep rate index of the power station boiler main steam pipeline is calculated, and a creep rate threshold is set; when the material creep rate index exceeds the creep rate threshold, an alarm information is sent; or a nonlinear crack growth model for describing material crack growth is set, and according to the material information, a crack growth situation of the material is simulated; when the crack growth exceeds a preset crack growth threshold, an alarm information is sent; or a material failure probability calculation model for describing material failure is set, and according to the material information, a material failure probability is calculated; when the material failure probability exceeds a preset material failure probability threshold, an alarm information is sent.

The invention relates to the technical field of material crack propagation testing, in particular to an SEB sample crack propagation testing method in a corrosive medium environment, which comprises the following steps: repeatedly carrying out a crack propagation test in a conventional air and room temperature environment, and deducing a regularized crack length alpha LVDT = gt according to a synchronous measurement result of a COD gauge and an LVDT sensor; according to the basic mapping relation of alpha < LVDT > and alpha < COD >, further comparing the mapping relation with actual measurement data of a COD gauge to obtain corrected alpha < LVDT > = gt; then, carrying out a crack propagation test in a high-temperature corrosion environment, and according to the corrected alpha LVDT = gt; and calculating the crack length a according to the mapping relation of alpha COD. Through the steps, the purpose of carrying out crack propagation test on the three-point bending SEB sample in a corrosive medium environment is achieved, and meanwhile, the accuracy of a test result is ensured.

The application relates to the technical field of mechanical testing devices, and particularly discloses a multi-scale in-situ monitoring device applied to material crack propagation and a testing method thereof. The device comprises a DCPD testing part, a DIC testing part and an electric control cabinet; the DCPD testing part comprises a fixed frame, a room temperature clamping device, a force loading system and a data acquisition system; and the DIC testing part comprises a DIC camera. Through the cooperation of the DCPD and the DIC, real-time monitoring of a macroscopic crack propagation rate and in-situ analysis of a microscopic crack tip stress and strain field distribution are realized, so that cross-scale material damage evolution information is obtained. The device has the advantages of computer full-digital control, high measurement precision, multi-dimensional synchronous data acquisition and the like, and is particularly suitable for high-precision, multi-scale material damage detection and failure mechanism research in an air environment.

The invention discloses a design method of a dense-phase carbon dioxide pipeline composite material crack stopper, which comprises the following steps: S1, selecting a sample steel pipe, and determining a steady-state expansion crack tip opening angle CTOA of a crack in the steel pipe; s2, the crack arrest critical CTOAc of the steel pipe is determined; s3, establishing a finite element model: performing grid division on the pipeline by adopting five layers of entity units, wherein a cohesion unit is adopted as a crack propagation path; s4, establishing a pressure attenuation model; s5, loading pressure by a two-step method, and simulating the pressure behind the tip of the crack; s6, determining cohesion parameters, and taking the cohesion parameters as finite element model parameters; s7, determining a crack arrestor model, setting a crack arrestor criterion, and performing finite element calculation to output CTOAa; and S8, determining a crack arrest criterion of the crack arrestor, and completing the design of the crack arrestor. According to the design method of the composite material crack arrestor for the dense-phase carbon dioxide pipeline, the problem that the crack cannot be stopped in time after the dense-phase carbon dioxide pipeline with the small caliber of OD508 or below is cracked is solved.

The invention belongs to the technical field of material cracking mechanism analysis, and discloses a stress corrosion test assembly for measuring tensile strength in a liquid medium for a tension tester, the stress corrosion test assembly is suitable for a horizontal tension tester, the horizontal tension tester comprises a clamping mechanism and a tension device positioned opposite to the clamping mechanism, the stress corrosion test assembly comprises a clamping part, a switching mechanism, a sample body, a medium containing mechanism and a reference electrode. The tensile strength of a material in a liquid medium can be measured, the device has the advantages of being high in adaptability and portability, any part of a tensile testing machine body cannot be damaged, and follow-up use of the tensile testing machine cannot be affected.

The invention provides a cyclic loading-multi-stage intermittent asphalt material fatigue crack critical healing point testing method, and aims to test a material self-healing failure critical point by gradually increasing the fatigue damage degree of an asphalt material. The test method comprises three stages: a lossless load cyclic loading stage, a lossy load cyclic loading stage and a multi-stage intermittent and lossless loading stage. Besides, the damage density variable quantity of the asphalt material after the fatigue crack is healed is used as an evaluation index of the healing critical point, the physical meaning of the damage density variable quantity is the crack area reduction proportion of the asphalt material before and after the intermittent fatigue crack is healed, and the smaller the numerical value is, the closer the material critical healing point is under the current damage degree. The index overcomes the limitation of experience-dependent macro-performance indirect evaluation in the prior art, and provides technical support for healing ability evaluation and material crack resistance optimization design of asphalt materials.

The application discloses a brittle material crack propagation prediction method, comprising the following steps: a brittle material entity model is discretized into a series of space material points through space grid multi-level division; parameters of the brittle material are acquired and taken as input of a prediction model; a prototype micro-brittle model constitutive relation is constructed based on space coordinates, the size of a near-field domain and a dual domain is set, and a key force action range is determined; initial boundary conditions are determined, and an external force is applied by using a progressive loading; physical and mechanical information such as material point position, velocity, acceleration and the like is updated in real time by using an explicit iteration method, and a critical elongation bond breaking criterion is used to describe damage cracking; displacement results and damage results at different times are output, the position and time of damage and cracking are recorded, and crack propagation paths at different times are acquired. The application solves the false stress wave problem caused by variable near-field domain size, and can effectively predict and analyze the mechanical behavior and damage problem of the brittle material under the action of a load.

The invention discloses a composite material crack propagation method based on a discrete cohesion zone model. Comprising the following steps: constructing a finite element model of a composite material test piece, positioning a crack tip node in the finite element model, establishing a local coordinate system according to the crack tip node, and calculating the size of a cohesion region; carrying out crack tip separation amount calculation under the local coordinate system so as to determine each displacement component; calculating a critical parameter corresponding to each fracture mode according to the size of the cohesion zone, and calculating each energy release rate component according to each displacement component and each critical parameter; and substituting each energy release rate component into a preset fracture criterion inequality to generate a crack propagation result of the composite material test piece. Through finite element modeling, the structure and the crack position of the composite material can be accurately represented, a basis is provided for subsequent expansion analysis, and compatibility with finite elements is achieved by calculating the size of a cohesive region and quantifying a cohesive force acting region. And crack propagation is simulated through a fracture criterion inequality, artificial experience intervention is avoided, and the result accuracy is improved.

This invention discloses a method for assessing the cracking risk of metallic materials, relating to the field of additive manufacturing of metallic materials, to solve the problem of difficulty in assessing the impact of structural complexity and dimensional differences on the cracking risk of materials when processing complex structure printing tasks. The assessment method includes: acquiring length data of typical samples of the metal to be assessed, where typical samples are thin-walled structures and large-size structures; calculating a first average rate for the thin-walled structure in a first time period and a second average rate in a second time period, and a third average rate for the large-size structure in the first time period and a fourth average rate in the second time period, based on the length data; calculating a first weighted average rate in the first time period based on the first and third average rates; calculating a second weighted average rate in the second time period based on the second and fourth average rates; and performing a risk assessment of the metal to be assessed based on the first and second weighted average rates.

The application relates to a method for detecting a lower base material crack of a roof-penetrating sleeve corner weld of a boiler heating surface, which comprises the following steps: a creeping wave probe is attached to a heating surface tube base material with a roof-penetrating sleeve, and a creeping wave signal is sent to the heating surface tube base material; wherein the creeping wave probe is located on one side of the heating surface tube base material close to a weld; and according to a creeping wave reflection signal received by the creeping wave probe, the outer wall crack of the heating surface tube base material with the roof-penetrating sleeve is detected. Compared with the prior art, the application can avoid the problems of crack mis-detection and missed detection caused by the excessively complex structure of a welding position, improves the accuracy of the roof-penetrating position heating surface tube crack detection result, is favorable for guaranteeing the normal operation of a power station boiler, and meets the actual application requirements.

A rapid real-time visualization system for a crack initiation process of a concrete component includes a pressure test machine, a fluorescent solution spraying device, an ultraviolet lamp group, a visible light imaging device group and a computer control system. Before the concrete component cracks, a surface of the concrete component is coated with a fluorescent solution retention layer to separate the sprayed fluorescent excitation solution from the concrete component, making the fluorescent excitation solution adhere to the fluorescent solution retention layer for a long time to mark cracks at any position in real time. The rapid real-time visualization system is used to achieve visualization of the crack initiation process, especially an early stage thereof. The rapid real-time visualization system and method can be used to study patterns of microcrack mutual traction development and aggregation into groups when concrete materials crack at any position or multiple points at a component scale.

The utility model discloses a metal material deformation crack detection device, which comprises a mounting frame, a supporting assembly convenient for supporting a metal material is arranged on the lower side wall of the mounting frame, transverse electric push rods are fixedly arranged on the left side and the right side of the mounting frame, and mounting plates are fixedly arranged at the output ends of the transverse electric push rods. The transverse electric push rod drives the fixing base to move through the mounting plate, the fixing base drives the rotating shaft to move through the bearing, the clamping plate clamps the metal material, then the driving assembly drives the rotating shaft to drive the clamping plate to rotate, the clamping plate drives the metal material to rotate, and therefore the metal material is turned over. The two sides of the metal material can be detected only by rotating the rotating shaft, a large amount of time is prevented from being wasted when the metal material is taken down and turned over, the situation that the metal material is too large in size and needs to be turned over with the help of an external lifting appliance is avoided, and metal material crack detection is more convenient.

The application discloses a cement material crack microbial repair effect evaluation method and belongs to the field of cement material repair effect performance evaluation. The repair effect evaluation device comprises a mechanical evaluation system, a penetration pressure measurement evaluation system and an internal structure analysis evaluation system. The mechanical evaluation system comprises an axial pressure equipment and a confining pressure equipment. The penetration pressure measurement evaluation system comprises a liquid injection pipe, a liquid discharge pipe and a sensor. The liquid source comprises a water source and a calcium source. The internal structure analysis evaluation system comprises a 360-degree rotatable acoustic probe arranged at both ends of the sample. The application aims to avoid evaluating the microbial repair effect from a single aspect, break through the single angle and limitation of the traditional identification "real breakthrough pressure" method, more clearly observe and evaluate the sample crack repair effect, reveal the growth, development, distribution position and deposition form of the microorganism in the crack, and avoid complicated and complex operations to realize full-time continuous monitoring.

The application discloses a cement-based material crack self-repairing particle and a preparation and use method thereof, which comprises functional microorganisms, a carrier and an outer protective layer; the functional microorganisms are loaded in the carrier; and the outer protective layer is wrapped on the outer surface of the carrier; the preparation method comprises the following steps: modifying the carrier first, then loading the functional microorganisms in the carrier, and then wrapping the outer protective layer on the outside of the carrier. In use, the self-repairing particle is directly mixed into the cement-based material, and a nutrient agent can be further added, so that the cracks in the cement-based material can be automatically repaired. The self-repairing particle of the application not only does not reduce the mechanical properties of the cement-based material like the existing self-repairing particle, but also can even improve the mechanical properties of the cement-based material, improve the durability of the cement-based material, has a good effect on repairing cracks, and can purify the contacted sewage to a certain extent.

The application discloses a kind of road rock agent material cracking crack detection device and detection method, it is related to road crack detection technical field, crack detection device includes connecting mechanism, detection mechanism, filling mechanism;Detection mechanism includes lifting frame one and mounting plate, horizontal air pipe is installed on mounting plate, evenly installed with spigot pipe on mounting plate, spigot pipe is communicated between horizontal air pipe, slidingly installed with detection frame on spigot pipe, the lower end of spigot pipe is sleeved with detection bowl, both sides in detection frame are provided with guide frame, spigot pipe is provided with connecting column, buckle frame is set on lifting frame one, connecting column extends to the inside of buckle frame and is connected with lamp pearl, buckle frame is provided with photosensitive resistance strip;When there is crack in road surface, detection bowl cannot be driven by air current and float up, lamp pearl is always bright, so that the position data of crack is converted into resistance value on photosensitive resistance strip, and the resistance value is combined to control filling mechanism to crack filling.

The present invention relates to the technical field of engineering bridges, and discloses a burr removal device for engineering bridge steel, comprising an integral external mechanism, wherein the integral external mechanism also comprises an integral main body, and an integral main groove is provided at the side wall of the integral main body. The present invention utilizes the large resistance of steel, wherein the greater the resistivity, the worse the conductivity, and the worse the conductivity, the higher the resistance heating efficiency. After the steel material is continuously energized, the steel material contacts the processing coil and is easily heated when energized. A sufficiently large current can soften the steel material between the processing coils, thereby avoiding the phenomenon of steel material cracking during processing due to the hard and brittle characteristics of steel. The steel material is an electrical conductor and has a relatively high resistivity. Since the heat is generated inside the steel material, it belongs to internal heating, and the thermal efficiency is very high. The use of the above-mentioned material can soften the metal inside the steel material, and then the burrs are smoothed downward by the hammering of the detection pressing hammer, without damaging the external protective layer, thereby extending the service life.