CN113042861B - Aluminum alloy material multi-pulse group welding method, system, device and storage medium - Google Patents

Aluminum alloy material multi-pulse group welding method, system, device and storage medium Download PDF

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CN113042861B
CN113042861B CN202110431389.5A CN202110431389A CN113042861B CN 113042861 B CN113042861 B CN 113042861B CN 202110431389 A CN202110431389 A CN 202110431389A CN 113042861 B CN113042861 B CN 113042861B
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pulse group
welding
pulse
current
aluminum alloy
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CN113042861A (en
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朱强
李�权
乐有树
吴立华
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Guangdong Polytechnic Institute
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    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
    • B23K9/091—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits
    • B23K9/092—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits characterised by the shape of the pulses produced
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
    • B23K9/091—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits
    • B23K9/093—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits the frequency of the pulses produced being modulatable
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/095—Monitoring or automatic control of welding parameters
    • B23K9/0953—Monitoring or automatic control of welding parameters using computing means
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention discloses a multi-pulse group welding method, a system, a device and a storage medium for aluminum alloy materials, wherein the method comprises the following steps: determining the average welding current according to the thickness of the aluminum alloy material; determining a plurality of pulse groups for welding according to the welding average current, wherein the total average current of the pulse groups is the welding average current, and the average current of each pulse group is periodically changed in a step manner; configuring welding parameters according to each pulse group, wherein the pulse group parameters comprise pulse group duration time, pulse group peak current, pulse group base value current, pulse group peak time length, pulse group base value time length and pulse group number; and welding the aluminum alloy material according to the welding parameters. The invention is beneficial to overflow of bubbles in a molten pool when the aluminum alloy material is welded, reduces air holes in a welding line, avoids welding line cracks generated by sudden rise or dip of heat input in the welding process, improves the welding quality of the aluminum alloy material, and can be widely applied to the technical field of metal welding.

Description

Aluminum alloy material multi-pulse group welding method, system, device and storage medium
Technical Field
The invention relates to the technical field of metal welding, in particular to a multi-pulse group welding method, a multi-pulse group welding system, a multi-pulse group welding device and a storage medium for an aluminum alloy material.
Background
Compared with the common ferrous metal material, the aluminum alloy material has the characteristics of light weight, high strength, small specific gravity, good corrosion resistance, convenient recycling and the like, is suitable for the long-term planning of energy conservation and emission reduction of the country, and is becoming more and more widely applied in the industrial field. However, compared with the conventional ferrous metal materials, the physical and chemical properties and welding process performance of the aluminum alloy materials have obvious self characteristics, and the problem of difficult welding is always the biggest obstacle for restricting the wide use of the aluminum alloy materials. The characteristics of the aluminum alloy can cause welding defects such as slag inclusion, unfused, incomplete penetration, shrinkage cavity, thermal cracking, hydrogen holes and the like to be easily formed during welding.
There are two common methods of pulse current welding, single pulse welding and double pulse welding. Bubbles in a molten pool are not easy to escape when the aluminum alloy is welded by single pulse, and the mechanical property is affected after the welding line is formed; when the aluminum alloy is welded by double pulses, strong and weak pulse groups can play a role in stirring a molten pool, bubbles in the molten pool are facilitated to escape, but pulse control parameters are too many, parameter optimization is difficult, smooth transition is not caused between the strong and weak pulse groups, arc voltage is large in jumping, and splashing is more. Based on the method, a step single pulse welding method is also proposed to improve the forming effect of the welding seam, however, in practical application, the step single pulse welding still cannot avoid welding defects such as air holes, cracks and the like in the welding seam, and the welding quality of the aluminum alloy material is affected.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art to a certain extent.
Therefore, an object of the embodiments of the present invention is to provide a multi-pulse group welding method for an aluminum alloy material, in which a plurality of pulse groups with gradient change of average current are selected to form a multi-pulse group to weld the aluminum alloy material, so that on one hand, a periodic and regular stirring effect can be generated in an aluminum alloy molten pool, which is favorable for overflow of bubbles in the molten pool, and air holes in a welding seam are reduced, and on the other hand, the average current of the pulse groups is in gradient change, so that heat input is stable in the welding process, and welding seam cracks generated by sudden rise or drop of heat input in the welding process are avoided, thereby improving the forming quality of the welding seam and improving the welding quality of the aluminum alloy material.
It is another object of an embodiment of the present invention to provide a multi-pulse group welding system for aluminum alloy materials.
In order to achieve the technical purpose, the technical scheme adopted by the embodiment of the invention comprises the following steps:
in a first aspect, an embodiment of the present invention provides a multi-pulse group welding method for an aluminum alloy material, including the steps of:
determining the average welding current according to the thickness of the aluminum alloy material;
determining a plurality of pulse groups for welding according to the welding average current, wherein the total average current of the pulse groups is the welding average current, and the average current of each pulse group is periodically changed in a step manner;
configuring welding parameters according to each pulse group, wherein the pulse group parameters comprise pulse group duration time, pulse group peak current, pulse group base value current, pulse group peak time length, pulse group base value time length and pulse group number;
and welding the aluminum alloy material according to the welding parameters.
Further, in one embodiment of the present invention, the step of determining the welding average current according to the thickness of the aluminum alloy material specifically includes:
the diameter of the welding wire is determined according to the thickness of the aluminum alloy material, and the average welding current is determined according to the thickness of the aluminum alloy material and the diameter of the welding wire.
Further, in one embodiment of the present invention, the step of determining a plurality of pulse groups for welding according to the welding average current specifically includes:
determining a total average current of a plurality of pulse groups according to the welding average current;
determining the number of pulse groups, the average current of each pulse group and the pulse group duration according to the total average current of the pulse groups;
and determining pulse group peak value current, pulse group base value current, pulse group peak value duration, pulse group base value duration and current pulse number of each pulse group according to the average current and pulse group duration of each pulse group, so as to determine a plurality of pulse groups used for welding.
Further, in one embodiment of the present invention, the number of pulse groups, the average current of each pulse group, and the pulse group duration are determined according to the following formula:
Figure BDA0003031473520000021
where i=1, 2,3 … n, n denotes the number of pulse groups, I denotes the total average current of n pulse groups, I i Representing the average current, T, of the ith pulse group i Representing the burst duration of the ith burst.
Further, in one embodiment of the present invention, the pulse group peak current, the pulse group base value current, the pulse group peak duration, the pulse group base value duration, and the current pulse number of each of the pulse groups are determined according to the following formula:
Figure BDA0003031473520000022
T i ＝(t ip +t ib )m i
where i=1, 2,3 … n, n denotes the number of pulse groups, m i Indicating the number of current pulses of the ith pulse group, I i Representing the average current, T, of the ith pulse group i Representing the burst duration of the ith burst, I ip A pulse group peak current representing the ith pulse group, I ib Pulse group base current, t, representing the ith pulse group ip A pulse group peak time length, t, representing an ith pulse group ib Representing the burst base duration of the ith burst.
Further, in an embodiment of the present invention, the configuration parameters further include wire feed speed and torch travel speed.
Further, in one embodiment of the present invention, the step of welding the aluminum alloy material according to the welding parameters specifically includes:
performing welding arc starting;
and if the welding arcing is successful, welding according to the welding parameters, welding receiving the arc after the welding is completed, and if the welding arcing is unsuccessful, continuing to perform the welding arcing until the welding is completed.
In a second aspect, embodiments of the present invention provide an aluminum alloy material multi-pulse group welding system, comprising:
the welding average current determining module is used for determining the welding average current according to the thickness of the aluminum alloy material;
the pulse group determining module is used for determining a plurality of pulse groups used for welding according to the welding average current, wherein the total average current of the pulse groups is the welding average current, and the average current of each pulse group is periodically changed in a step manner;
the welding parameter configuration module is used for configuring welding parameters according to each pulse group, wherein the pulse group parameters comprise pulse group duration time, pulse group peak current, pulse group base value current, pulse group peak time, pulse group base value time and pulse group number;
and the welding module is used for welding the aluminum alloy material according to the welding parameters.
In a third aspect, an embodiment of the present invention provides an aluminum alloy material multi-pulse group welding apparatus, including:
at least one processor;
at least one memory for storing at least one program;
the at least one program, when executed by the at least one processor, causes the at least one processor to implement an aluminum alloy material multi-pulse group welding method as described above.
In a fourth aspect, embodiments of the present invention also provide a computer readable storage medium having stored therein a processor executable program which when executed by a processor is configured to perform a multi-pulse group welding method of an aluminum alloy material as described above.
The advantages and benefits of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
According to the embodiment of the invention, the proper welding average current is determined according to the thickness of the aluminum alloy material to be welded, a plurality of pulse groups with the average current periodically changing in a step mode are determined according to the welding average current, and welding parameters are configured according to the determined pulse groups, so that the welding of the aluminum alloy material is completed. According to the embodiment of the invention, a plurality of pulse groups with gradient change of average current are selected to form a plurality of pulse groups to weld the aluminum alloy material, on one hand, a periodic and regular stirring effect can be generated in an aluminum alloy molten pool, so that overflow of bubbles in the molten pool is facilitated, air holes in a welding line are reduced, and on the other hand, the average current of the pulse groups is in gradient change, so that heat input in the welding process is stable, welding line cracks generated by sudden rising or falling of heat input in the welding process are avoided, and therefore, the welding line forming quality is improved, and the welding quality of the aluminum alloy material is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will refer to the drawings that are needed in the embodiments of the present invention, and it should be understood that the drawings in the following description are only for convenience and clarity to describe some embodiments in the technical solutions of the present invention, and other drawings may be obtained according to these drawings without any inventive effort for those skilled in the art.
FIG. 1 is a flow chart of steps of a multi-pulse group welding method for aluminum alloy materials according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of current waveforms for single pulse welding of aluminum alloy materials in the related art;
FIG. 3 is a schematic diagram of current waveforms for double pulse welding of aluminum alloy materials in the related art;
FIG. 4 is a schematic diagram of current waveforms for stepped single pulse welding of aluminum alloy materials in the related art;
FIG. 5 is a schematic diagram of current waveforms of a multi-pulse group welding method for aluminum alloy materials according to an embodiment of the present invention;
FIG. 6 is a block diagram of an aluminum alloy material multi-pulse group welding system according to an embodiment of the present invention;
fig. 7 is a block diagram of a multi-pulse group welding device for aluminum alloy materials according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention. The step numbers in the following embodiments are set for convenience of illustration only, and the order between the steps is not limited in any way, and the execution order of the steps in the embodiments may be adaptively adjusted according to the understanding of those skilled in the art.
In the description of the present invention, the plurality means two or more, and if the description is made to the first and second for the purpose of distinguishing technical features, it should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the precedence of the indicated technical features. Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art.
First, description will be made of a conventional welding method of an aluminum alloy material in the related art.
FIG. 2 is a schematic diagram showing current waveforms of a related art aluminum alloy material single pulse welding, wherein I p Indicating the peak current of single pulse, I b Indicating the current magnitude of the single pulse base value, t p Representing the peak time length, t, of a single pulse b Representing the base time length of the single pulse. Because the single pulse current cannot stir in the aluminum alloy molten pool, bubbles in the molten pool are not easy to overflow, and air holes can be formed after welding lines are formed, so that the mechanical properties of the aluminum alloy materials can be influenced.
FIG. 3 is a schematic diagram showing current waveforms of a double pulse welding of aluminum alloy material in the related art, wherein strong pulses and weak pulses are used to form double pulses, wherein T S Representing the total duration of the strong pulse group, T W Indicating the total duration of weak pulse group maintenance, I sp Indicating the peak current of the strong pulse group, I sb Indicating the magnitude of the current, t, of the strong pulse group base value sp Representing the peak time length, t, of the strong pulse group sb Representing the length of time of the base value of the strong pulse group, I wp Indicating the peak current of weak pulse group, I wb Indicating the magnitude of the current, t, of the base value of the weak pulse group wp Represents the peak time length, t, of weak pulse group wb Representing weak pulsesGroup base value time length. When the double pulse is adopted to weld aluminum alloy, strong and weak pulse groups can play a role in stirring a molten pool, bubbles in the molten pool are facilitated to escape, but pulse control parameters are too many, parameter optimization is difficult, smooth transition is not generated between strong and weak pulses, arc voltage is large in jumping, splashing is more, and defects such as cracks are easy to generate are overcome.
FIG. 4 is a schematic diagram showing current waveforms of a stepped single pulse welding of an aluminum alloy material according to the related art, which is an improvement of the single pulse welding current waveform shown in FIG. 2, wherein I m Indicating the magnitude of the step pulse current, t m The step pulse time length is shown, and the rest parameters have the same meaning as in fig. 2. Although the step can play a role in controlling the molten drop transition in theory in pulse welding, in practical application, welding defects such as air holes, cracks and the like still occur.
Referring to fig. 1, an embodiment of the present invention provides a multi-pulse group welding method for an aluminum alloy material, which specifically includes the following steps:
s101, determining the average welding current according to the thickness of the aluminum alloy material.
Specifically, an appropriate welding average current may be determined according to the type and thickness of the aluminum alloy material, thereby improving welding quality.
Further as an alternative embodiment, the step of determining the welding average current according to the thickness of the aluminum alloy material is specifically:
the wire diameter is determined according to the thickness of the aluminum alloy material, and the welding average current is determined according to the thickness of the aluminum alloy material and the wire diameter.
In the inventive example, a suitable wire diameter of 1.2mm was determined and a suitable average welding current of 92A was determined, taking the welding of 6061 aluminum alloy flat plate material having a thickness of 3mm as an example.
S102, determining a plurality of pulse groups for welding according to the welding average current, wherein the total average current of the pulse groups is the welding average current, and the average current of each pulse group is periodically changed in a step mode.
Specifically, the embodiment of the invention selects a plurality of pulse groups with gradient change of average current to form a plurality of pulse groups for welding the aluminum alloy material, on one hand, a periodic and regular stirring effect can be generated in an aluminum alloy molten pool, which is beneficial to overflow of bubbles in the molten pool, and reduces air holes in a welding line, and on the other hand, the average current of the pulse groups is in gradient change, so that heat input in the welding process is stable, and welding line cracks generated by sudden rise or dip of heat input in the welding process are avoided, thereby improving the welding line forming quality and the welding quality of the aluminum alloy material. The step S102 specifically includes the following steps:
s1021, determining the total average current of a plurality of pulse groups according to the welding average current;
s1022, determining the number of pulse groups, the average current of each pulse group and the pulse group duration according to the total average current of the pulse groups;
s1023, determining the pulse group peak value current, the pulse group base value current, the pulse group peak value duration, the pulse group base value duration and the current pulse number of each pulse group according to the average current and the pulse group duration of each pulse group, thereby determining a plurality of pulse groups used for welding.
Further alternatively, the number of bursts, the average current of each burst, and the burst duration are determined according to the following equation:
Figure BDA0003031473520000061
where i=1, 2,3 … n, n denotes the number of pulse groups, I denotes the total average current of n pulse groups, I i Representing the average current, T, of the ith pulse group i Representing the burst duration of the ith burst.
Specifically, in the embodiment of the present invention, the number of pulse groups, the average current of each pulse group, and the pulse group duration may be selected according to the determined welding average current 92A and the above formula. Specifically, the number n of pulse groups is 4, and the average current I of the 1 st pulse group 1 For 118A, burst duration T 1 Average current I for pulse group 2 of 120ms 2 For a burst duration T of 102A 2 Average current I for pulse group 3 of 96ms 3 For a burst duration T of 86A 3 Average current I for the 4 th pulse group of 144ms 4 For a pulse group duration T of 74A 4 180ms.
Further as an alternative embodiment, the pulse group peak current, the pulse group base current, the pulse group peak duration, the pulse group base duration, and the number of current pulses for each pulse group are determined according to the following formula:
Figure BDA0003031473520000062
T i ＝(t ip +t ib )m i
where i=1, 2,3 … n, n denotes the number of pulse groups, m i Indicating the number of current pulses of the ith pulse group, I i Representing the average current, T, of the ith pulse group i Representing the burst duration of the ith burst, I ip A pulse group peak current representing the ith pulse group, I ib Pulse group base current, t, representing the ith pulse group ip A pulse group peak time length, t, representing an ith pulse group ib Representing the burst base duration of the ith burst.
Specifically, the pulse group peak current, the pulse group base value current, the pulse group peak duration, the pulse group base value duration and the current pulse number of each pulse group can be selected according to the obtained average current of each pulse group, the pulse group duration and the formula. In the embodiment of the invention, the peak current I of the pulse group of the 1 st pulse group 1p 300A, pulse group base value current I 1b For a pulse group peak duration T of 70A 1p For a pulse group base duration T of 2.5ms 1b For 9.5ms, current pulse number m 1 Pulse group peak current I of 10, 2 nd pulse group 2p For 280A, pulse group base value current I 2b For a pulse group peak duration T of 55A 2p For a pulse group base duration T of 2.5ms 2b For 9.5ms, current pulse number m 2 Pulse group peak current I of 8, 3 rd pulse group 3p For 260A, pulse group base value current I 3b 40A, burst peak duration T 3p For a pulse group base duration T of 2.5ms 3b For 9.5ms, current pulse number m 3 Pulse group peak current I for pulse group 4 of 12 4p For 240A, burst base current I 4b For a pulse group peak duration T of 30A 4p For a pulse group base duration T of 2.5ms 4b For 9.5ms, current pulse number m 4 15.
As shown in fig. 5, for simplifying the waveform diagram, only 2 current pulses are shown in each pulse group, but the number of current pulses in each pulse group may be substantially determined according to the actual situation (for example, in the embodiment of the present invention, the number of current pulses in 4 pulse groups is 10, 8, 12 and 15, respectively).
It can be understood that in the embodiment of the present invention, 4 pulse groups are sequentially arranged according to the stepwise change of the average current from large to small, and sequentially arranged according to the stepwise change of the average current from small to large after the 4 th pulse group, so as to form a period (including 8 pulse groups), and the period is repeated to obtain a multi-pulse group with the average current periodically stepwise changed.
S103, configuring welding parameters according to each pulse group, wherein the pulse group parameters comprise pulse group duration time, pulse group peak current, pulse group base value current, pulse group peak time length, pulse group base value time length and pulse group number.
Specifically, each pulse group for welding can be determined according to each obtained parameter, and then the welding parameters are configured according to the relevant parameters of each pulse group, so that the control of welding current pulses is realized.
Further as an alternative embodiment, the configuration parameters further include wire feed speed and torch travel speed.
In the embodiment of the invention, the wire feeding speed is 70mm/s, and the walking speed of the welding gun is 8.5mm/s.
And S104, welding the aluminum alloy material according to the welding parameters.
Specifically, the welding current pulse, the wire feeding speed and the welding gun walking speed are controlled according to the welding parameters, so that the welding of the aluminum alloy can be automatically completed. The step S104 specifically includes the following steps:
s1041, performing welding arc starting;
and S1042, if the welding arc starting is successful, welding according to the welding parameters, welding receiving the arc after the welding is completed, and if the welding arc starting is unsuccessful, continuing to perform the welding arc starting until the welding is completed.
According to the embodiment of the invention, the proper welding average current is determined according to the thickness of the aluminum alloy material to be welded, a plurality of pulse groups with the average current periodically changing in a step mode are determined according to the welding average current, and welding parameters are configured according to the determined pulse groups, so that the welding of the aluminum alloy material is completed. According to the embodiment of the invention, a plurality of pulse groups with gradient change of average current are selected to form a plurality of pulse groups to weld the aluminum alloy material, on one hand, a periodic and regular stirring effect can be generated in an aluminum alloy molten pool, so that overflow of bubbles in the molten pool is facilitated, air holes in a welding line are reduced, and on the other hand, the average current of the pulse groups is in gradient change, so that heat input in the welding process is stable, welding line cracks generated by sudden rising or falling of heat input in the welding process are avoided, and therefore, the welding line forming quality is improved, and the welding quality of the aluminum alloy material is improved. The embodiment of the invention has good welding effect in the welding of aluminum alloy materials with various thicknesses, and can produce beautiful scale pattern welding seams.
Referring to fig. 6, an embodiment of the present invention provides an aluminum alloy material multi-pulse group welding system, comprising:
the welding average current determining module is used for determining the welding average current according to the thickness of the aluminum alloy material;
the pulse group determining module is used for determining a plurality of pulse groups used for welding according to the welding average current, wherein the total average current of the pulse groups is the welding average current, and the average current of each pulse group is periodically changed in a step manner;
the welding parameter configuration module is used for configuring welding parameters according to each pulse group, wherein the pulse group parameters comprise pulse group duration time, pulse group peak current, pulse group base value current, pulse group peak time, pulse group base value time and pulse group number;
and the welding module is used for welding the aluminum alloy material according to the welding parameters.
The content in the method embodiment is applicable to the system embodiment, the functions specifically realized by the system embodiment are the same as those of the method embodiment, and the achieved beneficial effects are the same as those of the method embodiment.
Referring to fig. 7, an embodiment of the present invention provides an aluminum alloy material multi-pulse group welding apparatus, including:
at least one processor;
at least one memory for storing at least one program;
the at least one program, when executed by the at least one processor, causes the at least one processor to implement the aluminum alloy material multi-pulse group welding method.
The content in the method embodiment is applicable to the embodiment of the device, and the functions specifically realized by the embodiment of the device are the same as those of the method embodiment, and the obtained beneficial effects are the same as those of the method embodiment.
The embodiment of the invention also provides a computer readable storage medium, in which a processor executable program is stored, which when executed by a processor is used for executing the above-mentioned aluminum alloy material multi-pulse group welding method.
The computer readable storage medium of the embodiment of the invention can execute the multi-pulse group welding method for the aluminum alloy material provided by the embodiment of the method of the invention, can execute any combination implementation steps of the embodiment of the method, and has corresponding functions and beneficial effects.
Embodiments of the present invention also disclose a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The computer instructions may be read from a computer-readable storage medium by a processor of a computer device, and executed by the processor, to cause the computer device to perform the method shown in fig. 1.
In some alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may in fact be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flowcharts of the present invention are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed, and in which sub-operations described as part of a larger operation are performed independently.
Furthermore, while the present invention has been described in the context of functional modules, it should be appreciated that, unless otherwise indicated, one or more of the functions and/or features described above may be integrated in a single physical device and/or software module or one or more of the functions and/or features may be implemented in separate physical devices or software modules. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary to an understanding of the present invention. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be apparent to those skilled in the art from consideration of their attributes, functions and internal relationships. Accordingly, one of ordinary skill in the art can implement the invention as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative and are not intended to be limiting upon the scope of the invention, which is to be defined in the appended claims and their full scope of equivalents.
The above functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or a part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the above-described method of the various embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium upon which the program described above is printed, as the program described above may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted, or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the foregoing description of the present specification, reference has been made to the terms "one embodiment/example", "another embodiment/example", "certain embodiments/examples", and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and these equivalent modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.

Claims (7)

1. The multi-pulse group welding method for the aluminum alloy material is characterized by comprising the following steps of:
determining the average welding current according to the thickness of the aluminum alloy material;
determining a plurality of pulse groups for welding according to the welding average current, wherein the total average current of the pulse groups is the welding average current, and the average current of each pulse group is periodically changed in a step manner;
configuring welding parameters according to each pulse group, wherein the welding parameters comprise pulse group duration time, pulse group peak current, pulse group base value current, pulse group peak time length, pulse group base value time length and pulse group number;
welding the aluminum alloy material according to the welding parameters;
the step of determining a plurality of pulse groups for welding according to the welding average current specifically comprises the following steps:
determining a total average current of a plurality of pulse groups according to the welding average current;
determining the number of pulse groups, the average current of each pulse group and the pulse group duration according to the total average current of the pulse groups;
determining a pulse group peak current, a pulse group base value current, a pulse group peak time length, a pulse group base value time length and a current pulse number of each pulse group according to the average current and the pulse group duration of each pulse group, so as to determine a plurality of pulse groups used for welding;
the number of pulse groups, the average current of each pulse group and the pulse group duration are determined according to the following formula:
Figure QLYQS_1
where i=1, 2,3 … n, n denotes the number of pulse groupsAnd n is not less than 3,
Figure QLYQS_2
representing the total average current of n pulse groups, < >>
Figure QLYQS_3
Represents the average current of the ith pulse group, < +.>
Figure QLYQS_4
A pulse group duration representing an ith pulse group;
the pulse group peak current, the pulse group base value current, the pulse group peak time length, the pulse group base value time length and the current pulse number of each pulse group are determined according to the following formula:
Figure QLYQS_5
Figure QLYQS_6
wherein i=1, 2,3 … n, n representing the number of pulse groups and n being 3 or more,
Figure QLYQS_7
indicating the number of current pulses of the ith pulse group, etc.>
Figure QLYQS_8
Represents the average current of the ith pulse group, < +.>
Figure QLYQS_9
Pulse group duration, which represents the ith pulse group,/-for the pulse group>
Figure QLYQS_10
Pulse group peak current representing the ith pulse group,/->
Figure QLYQS_11
Pulse group base current representing the ith pulse group, +.>
Figure QLYQS_12
Pulse group peak duration indicating i-th pulse group,/->
Figure QLYQS_13
Representing the burst base duration of the ith burst.
2. The method for multi-pulse group welding of aluminum alloy materials according to claim 1, wherein the step of determining the average welding current according to the thickness of the aluminum alloy materials comprises the following steps:
the diameter of the welding wire is determined according to the thickness of the aluminum alloy material, and the average welding current is determined according to the thickness of the aluminum alloy material and the diameter of the welding wire.
3. The method of claim 2, wherein the welding parameters further comprise wire feed speed and torch travel speed.
4. A method of multi-pulse group welding of aluminum alloy materials according to any of claims 1 to 3, characterized in that said step of welding aluminum alloy materials according to said welding parameters comprises in particular:
performing welding arc starting;
and if the welding arcing is successful, welding according to the welding parameters, welding receiving the arc after the welding is completed, and if the welding arcing is unsuccessful, continuing to perform the welding arcing until the welding is completed.
5. An aluminum alloy material multi-pulse group welding system, comprising:
the welding average current determining module is used for determining the welding average current according to the thickness of the aluminum alloy material;
the pulse group determining module is used for determining a plurality of pulse groups used for welding according to the welding average current, wherein the total average current of the pulse groups is the welding average current, and the average current of each pulse group is periodically changed in a step manner;
the welding parameter configuration module is used for configuring welding parameters according to each pulse group, wherein the welding parameters comprise pulse group duration time, pulse group peak current, pulse group base value current, pulse group peak time, pulse group base value time and pulse group number;
the welding module is used for welding the aluminum alloy material according to the welding parameters;
the pulse group determining module is specifically configured to:
determining a total average current of a plurality of pulse groups according to the welding average current;
determining the number of pulse groups, the average current of each pulse group and the pulse group duration according to the total average current of the pulse groups;
determining a pulse group peak current, a pulse group base value current, a pulse group peak time length, a pulse group base value time length and a current pulse number of each pulse group according to the average current and the pulse group duration of each pulse group, so as to determine a plurality of pulse groups used for welding;
the number of pulse groups, the average current of each pulse group and the pulse group duration are determined according to the following formula:
Figure QLYQS_14
wherein i=1, 2,3 … n, n representing the number of pulse groups and n being 3 or more,
Figure QLYQS_15
representing the total average current of n pulse groups, < >>
Figure QLYQS_16
Represents the average current of the ith pulse group, < +.>
Figure QLYQS_17
A pulse group duration representing an ith pulse group;
the pulse group peak current, the pulse group base value current, the pulse group peak time length, the pulse group base value time length and the current pulse number of each pulse group are determined according to the following formula:
Figure QLYQS_18
Figure QLYQS_19
wherein i=1, 2,3 … n, n representing the number of pulse groups and n being 3 or more,
Figure QLYQS_20
indicating the number of current pulses of the ith pulse group, etc.>
Figure QLYQS_21
Represents the average current of the ith pulse group, < +.>
Figure QLYQS_22
Pulse group duration, which represents the ith pulse group,/-for the pulse group>
Figure QLYQS_23
Pulse group peak current representing the ith pulse group,/->
Figure QLYQS_24
Pulse group base current representing the ith pulse group, +.>
Figure QLYQS_25
Pulse group peak duration indicating i-th pulse group,/->
Figure QLYQS_26
Representing the burst base duration of the ith burst.
6. An aluminum alloy material multi-pulse group welding device, comprising:
at least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one processor is caused to implement an aluminum alloy material multi-pulse group welding method as claimed in any one of claims 1 to 4.
7. A computer readable storage medium in which a processor executable program is stored, characterized in that the processor executable program is for performing a multi-pulse group welding method of an aluminum alloy material as claimed in any one of claims 1 to 4 when being executed by a processor.
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