WO2006073334A1 - Procede et dispositif de diagnostic et de commande de la qualite d'un soudage par laser - Google Patents

Procede et dispositif de diagnostic et de commande de la qualite d'un soudage par laser Download PDF

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Publication number
WO2006073334A1
WO2006073334A1 PCT/RU2005/000675 RU2005000675W WO2006073334A1 WO 2006073334 A1 WO2006073334 A1 WO 2006073334A1 RU 2005000675 W RU2005000675 W RU 2005000675W WO 2006073334 A1 WO2006073334 A1 WO 2006073334A1
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WIPO (PCT)
Prior art keywords
laser
welding
signals
welded
threshold
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PCT/RU2005/000675
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English (en)
Russian (ru)
Inventor
Akimzhan Fazylzhanovich Keremzhanov
Arbi Movlidovich Gayrabekov
Evgeniy Aleksandrovich Demin
Vasiliy Vasilievich Zhurko
Vadim Livovich Pak
Sergey Nikolaevich Silivanov
Original Assignee
Keremzhanov Akimzhan Fazylzhan
Arbi Movlidovich Gayrabekov
Evgeniy Aleksandrovich Demin
Vasiliy Vasilievich Zhurko
Vadim Livovich Pak
Sergey Nikolaevich Silivanov
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Keremzhanov Akimzhan Fazylzhan, Arbi Movlidovich Gayrabekov, Evgeniy Aleksandrovich Demin, Vasiliy Vasilievich Zhurko, Vadim Livovich Pak, Sergey Nikolaevich Silivanov filed Critical Keremzhanov Akimzhan Fazylzhan
Publication of WO2006073334A1 publication Critical patent/WO2006073334A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/03—Observing, e.g. monitoring, the workpiece

Definitions

  • the invention relates to the field of welding equipment, and can be used in solving diagnostic problems, multi-parameter control in all processes of high-quality, high-performance laser welding. There are no restrictions on the types of technologies, materials and equipment.
  • the position of the parts to be welded which determines the quality of welding, is not controlled.
  • a known method for diagnosing and controlling the quality of laser welding includes measuring the spatio-temporal signals of infrared radiation from heat traces on the surface of the parts being welded in the visible areas of the effects of the welding tool and its heat waves, converting temporal, spatial changes in signal amplitudes into gradient-extreme signals by modeled by a differential equation thermal conductivity of accumulation and blur, conversion of infrared radiation into informative electronic signals with a transducer with point surface thermosensitive elements, receiving an electric signal Ii from each of them, where i is the element number, determining the relative deviations of the welding tool from the joint between the parts to be welded and / or from the angle between the parts and the axis of the welding tool by amplitude selection of signals And i of the welded parts, endorsed according to the specified welding technology in front, on the sides of the joint path or relative to the axis of the welding tool, and p about the sighted surface region of the heat penetration wave; determining the presence of the welding process when the first threshold value is equal or exceeding;
  • This solution provides a comprehensive diagnosis of laser welding conditions by systematically monitoring the IR of thermal penetration waves, the geometry and relative motion of the parts to be welded, and metallurgical discontinuities. Effective information compression is used based on modeling the differential heat equation.
  • Limitations of this method are associated with the absence of a full range of diagnosed states of welding quality, taking into account violations of the gas protection of the welding zone, as well as the reasons for non-standard deviations of these states.
  • the known device for diagnosing and controlling the quality of laser welding includes an infrared converter, which visually visually inspects the thermal trace of the laser effect on the materials being welded, and an operation unit connected to the recorder by the output.
  • This device provides the use of effective information compression and systematic monitoring of the conditions and quality characteristics of laser welding, with partial automation of control by IRI penetration and geometry of the welded parts.
  • the limitations of this device are related to the lack of a comprehensive diagnostics of the conditions of welding quality, taking into account violations of the gas protection of the welding zone, as well as the causes of non-standard deviations of these states to ensure eliminating non-standard control states, including adaptive.
  • the basis of the invention is the task of improving the method of diagnostics of laser welding, in which, due to a change in methods, operations, monitoring conditions and analysis of the characteristics of IRI of thermal traces of laser penetration, shaping of the welded joint and discontinuity defects, as well as the signals of auxiliary sensors, the following technical result is obtained.
  • a more complete set of functions for monitoring and diagnosing the laser welding process is realized.
  • the specified welding technology for the fixed defect (x) defect (ov), the number of the welding point, the current position, the length of the seam or the passage of penetration, the number of the seam to be welded, the number of the item to be welded are identified; determine the possibility of the occurrence of discontinuity defects, reasons for reducing the resource of laser equipment nodes in case of gas protection violations; determine the excess edges of the welded parts; identify the actual or pre-threshold comparisons of the possible causes of lack of penetration, overheating, emissions; register signals of unacceptable penetration conditions, their actual or possible reasons for real-time adjustments of the welding process or correction by remelting of a defective section or process shutdown during prolonged violation of the optimal welding process; generate signals for automatic control of the laser welding process.
  • the basis of the invention is also the task of improving the device for implementing the diagnostic method of laser welding by introducing new elements and their relationships, which provides the following technical result.
  • the reliability of detection and forecasting of unacceptable deviations in the laser welding process is significantly increased, many of the causes of defects are eliminated due to more effective systemic organization in real time of spatio-temporal modeling, signal transformations, as well as amplitude tracking, monitoring and diagnostic transformations during setup and in real laser welding time.
  • the problem is solved in that in the method of diagnosis and quality control of laser welding, which consists in the measurement of spatio-temporal signals of infrared radiation of thermal traces on the surfaces of the parts to be welded in the visible areas of the effects of the welding tool and its heat waves, the conversion of temporary, spatial changes in signal amplitudes into gradient-extreme signals by means of accumulation and smearing modeled by the differential heat equation, the conversion of infrared radiation into informative electric signals by a transmitter with point surface heat-sensitive elements, with receiving from each of them an electric signal Ii, where i is the element number nt, the determination of the relative deviations of the welding tool from the joint between the parts to be welded and / or from the angle between the parts and the axis of the welding tool by amplitude selection of signals And i of the parts to be welded, which are seen respectively according to a given welding technology mainly in front, on the sides of the joint path or relative to the axis of the welding tool, and from the sighted surface region of the heat
  • the device for diagnosing and controlling the quality of laser welding containing an infrared converter for visualizing the thermal input of the thermal trace of the impact of the welding tool on the materials to be welded, the control unit and the operating unit connected to the recorder with an output, it is equipped with a laser unit with a laser beam intensity sensor, a laser pump current sensor located in the power supply unit, and an electronic matching unit, when this operating unit is electrically connected to the input and output to the infrared converter through the electronic matching unit, which is connected to the input and output of the control unit, the laser pump current sensor and the laser beam intensity sensor, and the infrared converter is made with the possibility of orientation along the viewing areas of the neighborhoods of surfaces located along the relative motion of the laser beam along the joint, in front and on the sides of the joint trajectory, or relative to the axis of the beam for
  • An infrared converter for visualizing the thermal trace of the impact of the welding tool on the materials being welded, the control unit and the operation unit connected to the recorder by the optical input, according to the invention is equipped with an electronic matching unit, and a laser is used as a welding tool, the electronic matching unit being connected to the operating unit , infrared converter and control unit.
  • the device for diagnosis and quality control of laser welding is equipped with:
  • Figure l presents a block diagram of a device that implements a method for diagnosing and controlling the quality of laser welding, when diagnosing abnormal technological conditions and detecting their causes in the circuit of various laser welding processes.
  • the technological process controlled by the device for diagnosing and controlling the quality of laser welding 17 is determined by the laser action of the installation 1.
  • the laser welding system 1 system includes blocks 2-12 and a laser beam 13.
  • the apparatus 1 comprises a power supply unit 2 with a laser pump current sensor 3 located therein, a cooling unit 4 with a coolant temperature sensor located therein, a laser unit 6 with a laser beam intensity sensor 7 located therein, a gas protection unit for the welding zone 8 s located therein sensors blowing 9 and exhaust 10, the actuator 11 move the welded parts 14 relative to the laser beam 13, and the control unit 12.
  • the positions of the control object are presented, respectively: 14 - welded parts; 15 - zone of focusing of the laser beam 13 on the surface of the welded parts 14, 16 - zone of sight of the IRI of thermal traces of thermal images of the processes of functioning of the equipment and shaping of laser penetration.
  • the laser welding diagnostic and quality control device 17 contains an infrared converter 18 of the visible thermal traces of the objects being monitored, as well as an operation unit 20 electrically connected to the converter 18 by an input and output through an electronic matching unit 19 and outputs to the input and output of block 12 and to the input of the recorder 21.
  • the outputs of the sensors of the pump current of the laser 3, the temperature of the cooling medium 5, the intensity of the laser beam 7, blowing 9 and exhaust hood 10 can be connected to block 20 through block 19.
  • the device 17 may be provided for remote transmission of IKI through refractory, reflex elements and optical fibers. And also for reliable protection against sparks, splashes, transmitting IRs can be supplied, for example, mesh screens made of highly heat-conducting metal. But this is not shown in FIG. 1 for simplicity.
  • the sensor 3 of the laser pump current in the power supply unit 2 determines the current changes that directly characterize the causes of abnormal diagnosed states of lack of penetration, overheating, emissions and burns.
  • the temperature sensor 5 of the cooling medium as part of the cooling unit 4 determines the temperature changes characterizing abnormal forced modes and malfunctions in the formation of the required laser exposure.
  • the sensor 7 of the intensity of the laser beam in the laser unit 6 determines the wavelength of the laser radiation changes in the power of the laser beam, characterizing the causes of abnormal diagnosed conditions.
  • Sensors blowing 9 and hood 10, as part of the gas protection unit 8, determine abnormal changes in modes, problems in the supply of protective gas and the suction of harmful laser products. These changes characterize the causes of abnormal diagnosable states of the appearance of discontinuity defects, a decrease in the resource of laser equipment units.
  • An infrared converter 18 is connected to the input and output of the electronic matching unit 19 by an input and an output 19. It is intended mainly for visualizing by the optical input of a zone 16 thermal traces of laser radiation 15 on the materials to be welded 14 and generating the initial signals by spatiotemporal conversion into electrical signals thermal traces.
  • the transducer 18 can be performed as follows.
  • thermosensitive multi-element semiconductor structures for detecting and recognizing IKI objects with electronic scanning from block 20 through block 19 by heat receivers of the indicated regions and sighting zones.
  • Block 18 is oriented in the following areas of sight.
  • the area of the region to be seen, the distance to it, and the angle of sight are selected from conditions of sufficient sensitivity and noise immunity.
  • the electronic matching unit 19 electrically connects the infrared converter 18, auxiliary sensors 3,
  • control unit 12 with the operation unit 20, performing interface functions. It is designed to optimally interface the electrical signals of these units.
  • the operation unit 20 is electrically connected by inputs and outputs to the unit 19, as well as by the output to the input of the recorder 21.
  • Unit 20 is a computer or, in a number of specialized applications, a microprocessor implementation.
  • the functions of block 20 are provided by communication with the converter 18 through block 19, with blocks 3, 5, 7, 9, 10, 12, and directly with block 21. They consist of the following transformations: initial settings taking into account sighting and focusing on informative areas and zones , as well as entering thresholds and technological parameters of laser welding; amplitude threshold tracking and algorithmic signal processing, presentation of diagnostic information and abnormal state signals for adaptive control of the laser welding process.
  • the registrar 21 is electrically connected to the output of the operation unit 20. It can be autonomous or be a part of the means of computer implementation of the unit 12.
  • the registrar 21 is designed to provide tuning, adjustment, visibility when manually setting up and documenting the results of the functions performed by the device 17.
  • a method for diagnosing and controlling the quality of laser welding during operation of the device 17 according to FIG. 1 is carried out as follows. After turning on the device 17 in the block 20 in the setting mode according to the specified welding technology, threshold levels of P are entered.
  • the thresholds the smallest first for the presence of the welding process - Pl; the second for lack of penetration - P2; the third for overheating - PZ; for emissions of molten material - Pv; the fourth for the tack weld - P4; fifth for the closed edge of the seam - P5; zero for open edge - software; the sixth one for violations of gas protection - P6 (a possible state of occurrence of discontinuity defects, reasons for reducing the resource of laser equipment nodes); with asymmetry of signals from the geometry of the joint, the seventh for exceeding the edges is P7, and the eighth for deviations from the joint is P8 and / or from the angle between the parts and the laser beam - P8.1; the ninth for exceeding the level of the joint gap - P9; tenths for the causes of abnormal conditions from violations of gas protection - P10.1, P10.2 (respectively, signals of sensors 9, 10); eleventh for the causes of abnormal conditions of penetration from a decrease or exceeding the level of laser laser radiation intensity -
  • Thresholds P2 and PZ correspond, taking into account tolerances, to going beyond the limits of the norm to the side of lack of penetration and overheating.
  • PC monitoring thresholds are assigned. And the prediction thresholds for them correspond to the comparison with the IgES values additionally differentiated in block 20.
  • Thresholds for monitoring Pc of emissions of Pv also correspond to the IES values additionally differentiated in block 20.
  • the initial signals of the IRI of the thermal traces of the diagnosed objects from the corresponding zones are visualized by the optical input of the transducer 18.
  • the spatio-temporal signals of infrared radiation of the thermal traces on the surface of the parts being welded 14 are measured in the visible area of the laser radiation 13, in the focus areas of the laser beam 15 and its heat waves 16.
  • the sighted signals of the IKI are converted into an electric converter with point surface thermosensitive elements to obtain an electric signal Ii from each of them, where i is the number of the element.
  • the initial thermal traces of the diagnosed objects for the transducer 18 can be represented as: point, one-, two- and three-dimensional, reduced to two-dimensional sections; various characteristics of area and geometry; predominantly invariant to scale and position in the image field.
  • Io E (x, y)
  • Ir / n O Coefficients a, b with their derivatives, respectively, simulate the accumulation, blurring of signals.
  • the considered filtering transformation (1) allows one to significantly detune from changes in the emissivity of the IRI, from uninformative changes in heat transfer and from uninformative changes in the thermophysical characteristics of materials, as well as from small-sized short-term disturbances.
  • the transformation (1) in various ways increases the flexibility of providing universal capabilities of the device 17.
  • the transformation (1) with high speed and simple software and technical implementation can be obtained in the converter 18 and block 19 using the convolution integral.
  • optical defocusing can be realized by the input optical nodes in the transducer 18.
  • it is associated with the introduction of only a Gaussian defocusing transform.
  • Equivalent to defocusing, optical correlation using defocusing masks can be more versatile and faster, but related to the relative complexity of the filters.
  • blocks 18 - 20 are transformed by means of (1) into gradient-extreme IgES (x, y) with an informative representation of the amplitude and area of the initial effect.
  • threshold comparisons of IgES signals from transducer 18 and signals from sensors 3, 5, 7, 9, 10 with thresholds ⁇ l - ⁇ 18 This ensures tracking of the threshold mismatch, diagnose the condition of the welded joint parts 14 and a possible decrease in the resource characteristics of the blocks of the laser welding installation.
  • the IgES signals from zones 15, 16 of the welded parts 14, having passed the transducer 18 and block 19, are first compared with the threshold ⁇ l.
  • the signal of the presence of the welding process is determined by equality or excess by the total signal And ⁇ (Ires), from all the thermosensitive elements of the temperature sensor in the converter 18, of the first threshold value Pl.
  • ⁇ Ires
  • non-standard states of the welding process are determined according to a given welding technology. Including, for lack of penetration by equality or reduction relative to the second threshold value of P2, and for overheating by equality or exceeding the third threshold value of PP by the total signals And ⁇ .
  • This is an analysis of the amplitudes And ⁇ of the gradient-extreme signals of non-standard sizes of the weld pool by threshold monitoring according to PC for monitoring the onset of diagnosed conditions and according to PPR for monitoring temporary derivatives And ⁇ / t of the possibility (forecast) of their occurrence.
  • the forecast signal allows you to adjust in time, for example, the supply of the pump current in block 2 by the signal of the circuit of blocks 20, 19, 12, in many cases not allowing lack of fusion, and on the other hand preventing overheating. Excluding overheating, in some cases its consequences are eliminated, such as an abnormal increase in penetration, discontinuity defects, concentration of residual stresses, thermal deformations of the welded structure, and emissions of molten material.
  • the differentiated IES signals passing the transducer 18, block 19 in block 20 help to control significantly shorter durations of the welding current than the emission signals of molten material. Outliers are detected by selection of nonmonotonic maxima of their peaks.
  • non-standard states are determined according to the given welding technology ejection of molten material and its variety, burn through. This is done by equality or exceeding And / t threshold values of emissions of PV.
  • circuit blocks 14, 18 - 20 respectively predetermined welding technologies determine the possibility of discontinuity defects, the causes of reduction of laser equipment resource nodes (for equality or exceeding the sum signal ⁇ and the block 18, the sixth threshold value P6).
  • blocks 18, 19, 20 diagnostics of gradient-extreme IgES signals of the main non-standard states of quality of the laser welding process is implemented.
  • block 20 according to the signals of the block chain 14, 18 - 20, the navigation characteristics of the motion control are determined according to the specified welding technology by comparing Andi the corresponding areas of the joint sight for the tack with the fourth P4 for the closed edge of the seam with the fifth P5, for the open edge with zero According to the corresponding threshold values .
  • the navigation characteristics of the motion control are determined according to the specified welding technology by comparing Andi the corresponding areas of the joint sight for the tack with the fourth P4 for the closed edge of the seam with the fifth P5, for the open edge with zero According to the corresponding threshold values .
  • the signals of the blocks 14, 18 - 20 determine the excess of the edges (by exceeding the threshold P7), the deviation of the laser beam from the joint between the parts to be welded (by exceeding the threshold P8) and / or the angle between the parts and the laser beam (by exceeding the threshold P8. 1), exceeding the level of the joint gap (by exceeding the threshold P9). This is carried out by amplitude selection of the signals of the parts to be welded, which are sighted according to a given welding technology mainly in front, on the sides of the joint path or relative to the axis of the laser beam.
  • the threshold differences of the signals And deviations when the edges are exceeded are less than the threshold differences of the signals And i deviations from the butt (by exceeding the threshold P8), and also usually from the angle between the parts and the laser beam (when the threshold is exceeded) A8.1).
  • the excess of the edges is also associated with the violation of the thermal symmetry of the signals And relative to the heat-separating joint and is determined by the excess of the threshold IYI.
  • the deviation of the laser beam 13 from the normalized values of the angle, especially during angular welding, can lead to significantly greater than deviations from the junction of thermal asymmetry. This is monitored by comparison with the threshold P8.1.
  • an unacceptable joint gap of the parts to be welded is identified as a fact or a possible cause of lack of penetration and related defects of discontinuity, in the absence of other causes of lack of penetration.
  • the signals of the open or closed edge of the seam in block 20 the number of the welded seam is identified according to the specified welding technology.
  • the number of the welded product is identified by the number of welded seams and / or seam lengths.
  • the actual causes, or pre-threshold comparisons are identified for possible causes of lack of penetration: by the appearance in the circuit of blocks 18 to 20 of signals of threshold or pre-threshold levels of unacceptable edge excesses (by exceeding or equal to threshold P7), deviations from the joint (by exceeding or equal to threshold P8), from the angle between the parts and the laser beam (by exceeding or equal to the threshold P8.1); by the appearance in the circuit of blocks 7, 19, 20 of signals to reduce the level of laser radiation intensity (when the signal is less than or equal to the threshold of Pl 1.1); by the appearance of the signals of the chain of blocks 3, 19, 20 of decreasing amplitude (when the signal is less than or equal to the threshold ⁇ 15.1), duration (when the signal is less than or equal to the threshold ⁇ 2.1), frequency (when the signal is less than or equal to the threshold ⁇ .l) of signals laser pump current; by the appearance in the circuit of blocks 18 - 20 of signals for increasing the welding speed (when the signal is greater than or equal to the threshold P14.1); by unacceptable
  • changes in the level of laser energy and power are determined by monitoring in block 6 with a sensor 7 the laser radiation intensity at a wavelength laser exposure to the material. Or, by monitoring the sensor 3 of the laser beam pump current in block 2.
  • an unacceptable joint gap of the welded parts is identified as a fact or a possible cause of lack of penetration, associated defects of discontinuity, in the absence of other causes of lack of penetration.
  • unacceptable changes in the value of the laser spot are identified as a fact or a possible cause of the diagnosed conditions of lack of fusion or overheating, discharge, by establishing in block 20 the absence of other causes of these diagnosed conditions.
  • the considered signals of unacceptable fusion states, their actual or possible causes for real-time correction of the welding process or correction of the defective area by melting or stopping the process with a long violation of the optimal welding process are recorded according to a predetermined welding technology.
  • signals are generated for automatic control of the laser welding process by adaptively changing the amplitude, duration of the laser pump, welding speed, pulse frequency, and laser radiation focusing.
  • the main technical result obtained consists in a substantial expansion of the diagnostic capabilities, quality control of laser welding and in improving the technological reliability of the process in real time.
  • Informative comprehensive causal relationships of signals reflecting the dynamics of the main elements of the laser welding process have been more fully determined.
  • Diagnostics of the causes of all abnormal conditions has been introduced. Including for abnormal characteristics: laser energy; amplitude, duration and frequency of the pump current; welding speed; laser focusing; coolant temperature; gas protection. In monitoring the geometry of the joint, added control over the excess edges, and control over the gap.
  • Amplitude control, duration control, and pump current frequency control are added to the characteristics of penetration energy tracking. Welding speed control has been added to the characteristics of tracking the temporary parameters of penetration.
  • control over gas protection and control over the temperature of the cooling medium have been added. This was achieved by systemic synthesis of various control channels, including additional ones according to the pump current, energy and focusing of the laser beam, temperature of the cooling medium, and gas protection.
  • a single complex of parallel diagnostics of the main conditions of penetration, the appearance of discontinuity defects and a decrease in equipment life, analysis of the causes of non-standard penetration is provided. The causes of abnormal conditions are eliminated during tuning, timely repair, adaptive real-time adjustment of the quality of laser welding, taking into account the geometry of the joint, energy and time parameters of penetration, gas protection and temperature of the cooling medium.
  • thermosensor diagnostics of the formation of the weld and the operation of equipment of laser welding processes with the provision of adaptive control is not limited to the description of laser welding. It can be used for various modes, materials, thicknesses, technologies (including butt, corner, lap, orbital), with the additive, in the environment of various protective gases and without it, in any spatial position of laser welding. At the same time, they work out the minimum required mismatches without the participation of the operator, with optimization of the dynamics of oscillations of the electric drive.
  • the reliability of the welding installation is increased, the labor input is reduced, the productivity is increased (automated tuning, the use of intensive modes, the reduced duration of the start of the welding process), and welding materials and energy are saved.
  • the spraying of the material is reduced, the accuracy and stability of the process, i.e. quality of welded joints improves.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

Cette invention concerne un procédé et un dispositif de diagnostic et de commande de la qualité d'un soudage par laser. Cette invention vise à offrir un contrôle multi-paramètre de processus haute performance de soudage par laser et une automatisation de la commande. Un faisceau laser est utilisé comme outil de soudage. Le procédé de cette invention consiste à identifier le numéro de série d'un point de soudure, la position courante, la longueur de joint ou le passage de pénétration de soudure au moyen du calcul du nombre de signaux de présence de processus de soudage et de leur comparaison avec des relevés temporels de référence; à identifier le numéro de série du joint soudé, le numéro de série de l'article pouvant être soudé en fonction du nombre de joints soudés et/ou de leur longueur; à déterminer la possibilité d'apparition de défauts de discontinuité et les causes de la réduction de la durée de vie d'unités d'un dispositif laser; à déterminer l'excès de bords de pièces pouvant être soudées; à identifier les causes d'une insuffisance de fusion, d'une surchauffe et d'un rejet sur la base de signaux de niveaux seuil ou pré-seuil de dépassements inacceptables de paramètres de rayonnement laser, d'une réduction de vitesse de soudage et de modifications inacceptables de dimensions de points laser; à enregistrer des signaux d'états inacceptables de pénétration afin de corriger ou d'interrompre le processus en cas d'anormalité prolongée d'un processus de soudage optimal; et à former des signaux de commande automatique de processus de soudage par laser.
PCT/RU2005/000675 2004-12-30 2005-12-27 Procede et dispositif de diagnostic et de commande de la qualite d'un soudage par laser WO2006073334A1 (fr)

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RU2004138818/02A RU2258589C1 (ru) 2004-12-30 2004-12-30 Способ и устройство диагностики и управления качеством лазерной сварки
RU2004138818 2004-12-30

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CN107907482A (zh) * 2017-12-28 2018-04-13 西安铂力特增材技术股份有限公司 一种slm成形过程中熔池状态实时监测装置及方法
CN114523201A (zh) * 2022-01-31 2022-05-24 扬州市恒泰人防设备有限公司 一种安全门的全自动激光焊接系统
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US8747116B2 (en) * 2008-08-21 2014-06-10 Lincoln Global, Inc. System and method providing arc welding training in a real-time simulated virtual reality environment using real-time weld puddle feedback
RU2564504C1 (ru) * 2014-07-22 2015-10-10 Открытое акционерное общество "Челябинский трубопрокатный завод" Способ лазерной сварки труб большого диаметра
RU2599920C2 (ru) * 2014-11-20 2016-10-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Владимирский государственный университет имени Александра Григорьевича и Николая Григорьевича Столетовых" Устройство управления технологическим процессом лазерного термоупрочнения
RU2697530C1 (ru) * 2018-12-29 2019-08-15 Публичное акционерное общество "Челябинский трубопрокатный завод" (ПАО "ЧТПЗ") Способ сварки труб большого диаметра
RU2723493C1 (ru) * 2019-07-15 2020-06-11 федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" Способ лазерной сварки с контролем процесса формирования сварного шва

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1633646A1 (ru) * 1989-07-19 1994-02-15 Н.А. Архипенко Способ лазерной обработки материалов импульсным излучением в технологической установке и устройство для его осуществления
RU2127177C1 (ru) * 1997-06-23 1999-03-10 Павел Павлович Архипов Способ диагностики формообразования при сварке и устройство его осуществления
RU2138374C1 (ru) * 1996-07-29 1999-09-27 Эльпатроник АГ Способ отслеживания кромок перед сваркой и контроля кромок (варианты) и аппарат для его осуществления (варианты)
JP2004042118A (ja) * 2002-07-15 2004-02-12 Hitachi Ltd 溶接位置自動倣い制御装置及び自動倣い溶接方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1633646A1 (ru) * 1989-07-19 1994-02-15 Н.А. Архипенко Способ лазерной обработки материалов импульсным излучением в технологической установке и устройство для его осуществления
RU2138374C1 (ru) * 1996-07-29 1999-09-27 Эльпатроник АГ Способ отслеживания кромок перед сваркой и контроля кромок (варианты) и аппарат для его осуществления (варианты)
RU2127177C1 (ru) * 1997-06-23 1999-03-10 Павел Павлович Архипов Способ диагностики формообразования при сварке и устройство его осуществления
JP2004042118A (ja) * 2002-07-15 2004-02-12 Hitachi Ltd 溶接位置自動倣い制御装置及び自動倣い溶接方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107357257A (zh) * 2017-06-27 2017-11-17 安徽联亚智能装备制造有限公司 一种激光加工数据搜集及故障诊断系统
CN107907482A (zh) * 2017-12-28 2018-04-13 西安铂力特增材技术股份有限公司 一种slm成形过程中熔池状态实时监测装置及方法
CN114523201A (zh) * 2022-01-31 2022-05-24 扬州市恒泰人防设备有限公司 一种安全门的全自动激光焊接系统
CN117983962A (zh) * 2024-04-03 2024-05-07 成都环龙智能机器人有限公司 一种全流程自动焊接智能工作站的工作方法

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