CN116228198A - Anti-fatigue orthotropic plate postweld heat treatment management and control method based on virtual reality - Google Patents
Anti-fatigue orthotropic plate postweld heat treatment management and control method based on virtual reality Download PDFInfo
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- CN116228198A CN116228198A CN202310195685.9A CN202310195685A CN116228198A CN 116228198 A CN116228198 A CN 116228198A CN 202310195685 A CN202310195685 A CN 202310195685A CN 116228198 A CN116228198 A CN 116228198A
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Abstract
The invention discloses a virtual reality-based anti-fatigue orthotropic plate postweld heat treatment management and control method, which comprises the following steps of: A. the operation control end inputs the heat treatment parameters and the workpiece information into the system to construct a workpiece heat treatment model; B. the heat treatment scene in the furnace needs to divide the area of the workpiece, and a temperature measuring device is arranged in each area to construct a temperature field model; C. the communication network is mainly responsible for feeding back the heat treatment scene of the workpiece to the operation control end in real time through simulation correction to form a VR image. According to the invention, through real-time monitoring and remote exception handling of the communication network, equipment exception is avoided, meanwhile, technicians can remotely perform spot inspection and maintenance on the equipment, and the communication network is matched with the operation control end, so that the visualization of the heat treatment state of the workpiece can be realized, the technicians can intuitively see the heat treatment scene in the furnace, and the change of the external dimension, the organization and the welding residual stress of the workpiece are observed.
Description
Technical Field
The invention relates to the technical field of engineering building manufacturing, in particular to an anti-fatigue orthotropic plate post-welding heat treatment management and control method based on virtual reality.
Background
The traditional anisotropic plate is improved, so that the steel panel, the longitudinal stiffening ribs and the top diaphragm plate are mutually welded to form an integral orthotropic plate, and after integral annealing heat treatment measures, the welding residual stress generated by welding can be eliminated, and the welding deformation of a finished product during welding can be reduced, so that the fatigue resistance of the orthotropic plate structure is greatly improved;
the heat treatment furnace is a heat treatment device commonly used for steel structures, when the steel structures are subjected to heat treatment, a control method of a heat treatment system is a key for determining heat treatment quality, because the heat treatment furnace is in a closed state in the heat treatment process, the conditions in the heat treatment furnace are not clear, PID (proportion integration differentiation) regulation reaction is lagged, the heat treatment quality is affected due to the fact that the temperature difference of each part in the heat treatment furnace is large due to improper regulation, the heat treatment quality is improved for improving the visualization degree of the heat treatment process, and therefore, the method for controlling the heat treatment after the fatigue orthotropic plate welding based on virtual reality is necessary to solve the technical problems.
Disclosure of Invention
The invention aims to provide a post-welding heat treatment management and control method for an anti-fatigue orthotropic plate based on virtual reality, which aims to solve the problems that in the prior art, the heat treatment process of a heat treatment furnace is closed, and the heat treatment quality is affected due to large temperature difference of each part in the heat treatment furnace caused by adjustment delay.
In order to achieve the above purpose, the present invention provides the following technical solutions: a fatigue-resistant orthotropic plate postweld heat treatment management and control method based on virtual reality comprises the following steps:
A. the operation control end inputs the heat treatment parameters and the workpiece information into the system to construct a workpiece heat treatment model;
B. the heat treatment scene, the furnace heat treatment scene needs to divide the area of the workpiece, a temperature measuring device is arranged in each area, a temperature field model is constructed, and the real-time heat treatment temperature, the change of the external dimension of the workpiece and the residual stress of the workpiece are collected;
C. the communication network is mainly responsible for feeding back the workpiece heat treatment scene to the operation control end in real time through simulation correction to form a VR image, and the operation control end can more intuitively see the furnace heat treatment scene and observe the workpiece size change, the tissue change and the welding residual stress.
In a further embodiment, the operation control side includes establishing a thermal process simulation task, importing a model and defining materials and thermal parameters, thermal process parameter settings, meshing techniques, and inspecting the model and submitting the simulation task.
In a further embodiment, the simulation type in the heat treatment simulation task is three-dimensional, the environment temperature is 20 ℃, and the number of dies is 0.
In a further embodiment, the initial temperature of the heat treated workpiece is set to 20 ℃ at room temperature and the thermal conductivity of the workpiece to the environment is 40W/(m2·k) in the operation of introducing the model and defining the material and thermal parameters.
In a further embodiment, the thermal treatment scene includes a workpiece area division and a workpiece avatar.
In a further embodiment, the specific steps of the heat treatment scenario are: predicting initial temperature distribution, calculating a heat conduction differential equation, setting initial conditions and boundary conditions, obtaining the surface temperature of a workpiece by adopting a temperature measuring device, and establishing a workpiece temperature field by adopting a three-dimensional reconstruction technology.
In a further embodiment, the communication network is applied to the heat treatment scene of the workpiece in the furnace, and the heat treatment scene is transmitted to the operation control end through simulation correction and virtual reality in real time, and forms a VR image, the operation control end adopts visualization to monitor the heat treatment state of the workpiece in real time, so that the heat treatment scene in the furnace is more intuitively seen, the real-time information of the workpiece is observed, and the real-time information of the workpiece comprises the change of external dimension, the change of organization and the change of welding residual stress.
In a further embodiment, the operation control end compares technical parameters related to information pushing fed back in the heat treatment scene, and assists a technician in judging the heat treatment process in real time.
In a further embodiment, according to the workpiece heat treatment comparison information, the workpiece and equipment conditions in the heat treatment process are judged, the heat treatment progress is known, and a visual record is formed.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, by using the anti-fatigue orthotropic plate post-welding heat treatment management and control method based on virtual reality, an operator wears VR glasses, so that the running state of equipment in the furnace can be visually seen, once the equipment is in a problem, the operator can quickly take measures to maintain, and the waiting time of the operator is reduced. Similarly, operators can carry out daily spot inspection work of the equipment in a manner of wearing VR glasses without going deep into a furnace to carry out spot inspection on the equipment, so that the spot inspection efficiency is greatly improved;
2. according to the invention, the workpiece in the heat treatment process is visually displayed, the product quality is detected and analyzed in real time, and the process temperature rising curve is automatically generated through the analysis system, so that technicians can more accurately control the heat treatment process, the qualification rate of the orthotropic plate can be greatly improved, the unnecessary heat preservation time is reduced, the rejection rate and the repair rate are reduced, and the energy consumption of natural gas can be greatly saved;
3. according to the invention, through real-time monitoring and remote exception handling of the communication network, equipment exception is avoided, meanwhile, technicians can remotely perform spot inspection and maintenance on the equipment, potential safety hazards are greatly reduced, the safety accident rate is reduced, the communication network is matched with an operation control end to adopt a visualized state for heat treatment of a workpiece, a heat treatment scene in a furnace is more intuitively seen, and the change of the external dimension, the tissue change and the welding residual stress of the workpiece are observed.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of a post-weld heat treatment management and control method for an anti-fatigue orthotropic plate based on virtual reality.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, an embodiment of the present invention is provided: a fatigue-resistant orthotropic plate postweld heat treatment management and control method based on virtual reality comprises the following steps:
A. the operation control end inputs the heat treatment parameters and the workpiece information into the system to construct a workpiece heat treatment model;
B. the heat treatment scene in the furnace needs to divide the area of the workpiece, and a temperature measuring device is arranged in each area to construct a temperature field model;
C. the communication network is mainly responsible for feeding back the workpiece heat treatment scene to the operation control end in real time through simulation correction to form a VR image, and the operation control end can more intuitively see the furnace heat treatment scene and observe the workpiece size change, the tissue change and the welding residual stress.
Wherein, the operation control end: inputting the material names, material categories and heat treatment parameter information of the workpieces into a system, and then constructing a workpiece heat treatment model;
the heat treatment parameter information of the input system comprises a heating rate, a heat preservation time, a heat treatment temperature and a cooling rate, and the input system automatically generates an avatar model;
s1a, establishing a heat treatment simulation task, adopting simulation software, selecting an engineering in an engineering window, clicking a right button of a mouse to select an inserting process, namely popping up a dialog box of a task selecting module, selecting a heat treatment module, entering a heat treatment process defining window, selecting a process type, selecting 3-dimensional heat treatment, enabling the simulation type to select the environment temperature to be 20 ℃, enabling the number of dies to be 0, clicking an 'Apply' after setting, and clicking an 'OK' to determine that a heat treatment process of 'HeatTreatFe 3D' appears in the engineering window;
s1b, importing a model, defining materials and thermal parameters, importing a three-dimensional model of a workpiece, clicking a right mouse button at a stock window to sequentially select a geometric shape to a dialog box after inputting a result, importing the three-dimensional model into the model through a process and a result step, importing the three-dimensional model into the model through a result conversion, clicking an OK after finishing setting, namely, completing importing the model by dragging the model into an engineering window, wherein for the imported model, the materials are not required to be redefined, the materials which are already defined in the stock window are dragged into the model in the engineering window, for the thermal parameter setting of the model, clicking the right mouse button in the engineering window, sequentially selecting a heating, working, manually defining, popping up the dialog box, setting the initial temperature of the workpiece to be room temperature at 20 ℃, and the thermal conductivity coefficient of the workpiece to the environment is 40W/(m) 2 K), after the parameter setting is finished, sequentially clicking 'Apply' and 'OK', and finishing the setting of the thermal parameters of the workpiece;
s1c-1, setting parameters of a heat treatment process, selecting 'HeatTreatFe 3D' in an engineering window, and double-clicking a left mouse button to pop up the heat treatment process setting window, wherein the heat treatment temperature of the anti-fatigue orthotropic plate is 600-620 ℃, so that heating, heat preservation and cooling are performed only once in the heat treatment process, and only heating I, keeping I and cooling I are selected in the setting window;
s1c-2, selecting a heating I in a menu bar at the left side of a heat treatment process setting window, entering a heating process parameter setting window, then entering a heating temperature setting window, setting the temperature of the heating process to rise at a constant speed in simulation, and setting two nodes, namely, the temperature at room temperature of 20 ℃ when the time is 0, wherein the heat conduction coefficient between a workpiece and the environment is 40W/(m) 2 K) then clicking "Apply" and "OK" in sequence to complete the heating process parameter setting;
s1c-3, selecting a menu bar at the left side in the heat treatment process setting window to hold I, entering the heat preservation process parameter setting window, setting heat preservation time and heat preservation temperature, and setting the heat conduction coefficient between the workpiece and the environment to be 40W/(m) 2 K), then clicking 'Apply' and 'OK' in sequence to finish the setting of the heat preservation process;
s1c-4, selecting cooling I in a menu bar at the left side of a heat treatment process setting window, entering the cooling process parameter setting window, setting the cooling rate of the heat treatment of the anti-fatigue orthotropic plate to be not more than the heating rate, and normally taking 4-5 hours in the whole cooling process, so that the environment temperature selection table is 4.5 hours in the cooling process setting duration, the heat conduction coefficient between a workpiece and the environment is 40W/(m2.K), and then clicking Apply and OK in sequence to finish the parameter setting of the cooling process.
S1d, mesh division technology: selecting 'Mesh' from 'WorkPiecee' under 'HeatTreatFe 3D' in an engineering window, double-clicking a left mouse button, namely popping up a grid-partitioned window, still selecting 'Ringmesh' in a grid-partitioned mode, clicking 'OK', exiting the window, and dragging a 'Ringmesh' grid re-partition module at an inventory window to complete grid partition under 'WorkPiece' of 'HeatTreatFe 3D' of the engineering window.
S1e, checking a model and submitting a simulation task: after the definition and the setting of all the parameters are finished, the model can be checked by clicking the submit button, if an error system directly indicates and proposes a modification suggestion, if the system pops up a dialog box for successful check of the model, the simulation button can be clicked to start simulation.
Wherein, the heat treatment scene: firstly dividing areas of a workpiece subjected to heat treatment in a furnace, then placing a temperature measuring device for measuring the temperature of the heat-treated workpiece in real time in each divided area, and then constructing a temperature field model, and collecting heat treatment information of the workpiece in real time, wherein the heat treatment information mainly comprises temperature, workpiece outline dimension change and residual stress;
s2, obtaining initial temperature distribution prediction, calculating a nuclear tensor of a three-dimensional tensor model of the workpiece, and reconstructing a space temperature field, wherein the calculation of the temperature field prediction model comprises the following steps:
s2a, obtaining a heat conduction differential equation: based on Fourier law, according to the law of conservation of energy in thermal phenomena, a three-dimensional heat conduction differential equation under the transient condition of an internal heat source can be derived through mathematical popularization, and the thermal conductivity of a material is assumed to be isotropic, wherein the instantaneous temperature of the object changes along with the thermal treatment time in the thermal treatment process, and the thermal conductivity coefficient of the material, the constant pressure specific heat of the material, the plastic work generation heat and the phase change potential are all functions of the instantaneous temperature of the object;
s2b, initial conditions and boundary conditions:
A. initial conditions: when analyzing transient problems, an initial condition needs to be defined, namely, the temperature distribution condition of an object at the initial moment is given, and the initial condition is t=t0 on the assumption that the temperatures of the object at the initial moment are the same;
B. boundary conditions: according to the law of heat exchange, boundary conditions are generally classified into three categories, namely: temperature boundary conditions, heat flux density boundary conditions, convection boundary conditions, if the temperature function at any point on the object boundary is known at each moment, such boundary conditions are called temperature boundary conditions; if the heat flux density flowing into and out of the surface of the object at any point in time is a known function, such a boundary condition is a heat flux density boundary condition; if heat convection occurs on the object boundary and the functional relation is known, the method is called a convection boundary condition, external load is not involved in calculating a stress field in the annealing heat treatment process of the anti-fatigue orthotropic plate, and the factors causing stress are additional stress and strain caused by the influence of temperature and different temperatures on mechanical properties, and the method belongs to the problem of thermal elastoplasticity;
s2c, acquiring the surface temperature of the workpiece by adopting a temperature measuring device, shooting the workpiece by adopting a camera device to acquire an image, establishing a three-dimensional image of the workpiece by adopting a three-dimensional reconstruction technology based on the workpiece image, and marking the virtual three-dimensional image of the workpiece by adopting the surface temperature of the workpiece, so that the virtual three-dimensional image of the workpiece is acquired, finally, the virtual three-dimensional image of the workpiece can reflect the real state of the workpiece, a more visual phenomenon is established for a heat treatment observer, the heat treatment state of the observer can be confirmed more visually, and the judging accuracy is greatly improved;
wherein the communication network: the method is mainly responsible for transmitting a heat treatment scene of a workpiece in the furnace to an operation control end through simulation correction and virtual reality in real time, forming a VR image, adopting visualization to monitor the heat treatment state of the workpiece in real time at the operation control end, more intuitively seeing the heat treatment scene in the furnace, observing real-time information of the workpiece, wherein the real-time information of the workpiece comprises shape and size change, tissue change and welding residual stress change.
What has not been described in detail in this specification is prior art that is well known to those skilled in the art, and in the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The anti-fatigue orthotropic plate postweld heat treatment management and control method based on virtual reality is characterized by comprising the following steps of:
A. the operation control end inputs the heat treatment parameters and the workpiece information into the system to construct a workpiece heat treatment model;
B. the heat treatment scene in the furnace needs to divide the area of the workpiece, and a temperature measuring device is arranged in each area to construct a temperature field model;
C. the communication network is mainly responsible for feeding back the workpiece heat treatment scene to the operation control end in real time through simulation correction to form a VR image, and the operation control end can more intuitively see the furnace heat treatment scene and observe the workpiece size change, the tissue change and the welding residual stress.
2. The method for controlling the post-weld heat treatment of the anti-fatigue orthotropic plate based on virtual reality according to claim 1, wherein the operation control end comprises the steps of establishing a heat treatment simulation task, importing a model, defining materials and heat parameters, setting parameters of a heat treatment process, meshing a technology and submitting the simulation task.
3. The method for controlling the post-weld heat treatment of the anti-fatigue orthotropic plate based on virtual reality according to claim 2, wherein the simulation type in the task of establishing the heat treatment simulation is three-dimensional, the environment temperature is 20 ℃, and the number of dies is 0.
4. An anti-fatigue orthotopic based on virtual reality as claimed in claim 2The post-weld heat treatment control method is characterized in that in the operation of introducing a model and defining materials and heat parameters, the initial temperature of a heat treatment workpiece is set to be room temperature 20 ℃, and the heat conduction coefficient of the workpiece to the environment is 40W/(m) 2 ·K)。
5. The method for controlling post-weld heat treatment of an anti-fatigue orthotropic plate based on virtual reality according to claim 1, wherein the heat treatment scene comprises workpiece area division and workpiece avatar.
6. The method for controlling the post-weld heat treatment of the anti-fatigue orthotropic plate based on virtual reality according to claim 3, wherein the specific steps of the heat treatment scene are as follows: predicting initial temperature distribution, calculating a heat conduction differential equation, setting initial conditions and boundary conditions, obtaining the surface temperature of a workpiece by adopting a temperature measuring device, and establishing a workpiece temperature field by adopting a three-dimensional reconstruction technology.
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