CN115647583A - Laser welding control method and device, electronic equipment and storage medium - Google Patents
Laser welding control method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The invention relates to the technical field of welding, in particular to a laser welding control method, a laser welding control device, electronic equipment and a storage medium, wherein the laser welding control method comprises the following steps: determining the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding; and adjusting at least one control parameter in the welding parameters according to the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding so as to control the welding spot overlapping rate to be within a target range. According to the scheme, at least one control parameter in the welding parameters is adjusted according to the relation between the welding spot overlapping rate and the welding parameters, and the welding spot overlapping rate is controlled within a target range so as to ensure the consistency of welding penetration. The problem of use the light beam swing method among the prior art can cause the welding seam to fluctuate greatly at the penetration of different positions, lead to the inside penetration's of whole strip welding seam uniformity relatively poor, partial position probably takes place the rosin joint, and then influences the stability of product structure, has the structure risk of becoming invalid is solved.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a laser welding control method and device, electronic equipment and a storage medium.
Background
The weld porosity is defined as the gas in the weld pool that has no time to escape and stay in the cavity formed in the weld.
In order to reduce the generation of weld blowholes, laser welding of aluminum alloys and copper alloys generally uses a beam wobble method. Laser welding is an efficient precision welding method using a laser beam with high energy density as a heat source. Laser welding is one of the important aspects of the application of laser material processing techniques. The laser welding method is mainly used for welding thin-wall materials and low-speed welding, and the welding process belongs to a heat conduction type, namely, the surface of a workpiece is heated by laser radiation, surface heat is diffused inwards through heat conduction, and the workpiece is melted by controlling parameters such as the width, energy, peak power, repetition frequency and the like of laser pulse to form a specific molten pool. Due to the unique advantages, the welding method is successfully applied to the precise welding of micro and small parts.
However, the light beam swing method causes great fluctuation of the penetration depth of the welding line at different positions, the penetration depth of the welding line is the distance from the surface of a weldment to the deepest part of a melting area in the butt welding line, the consistency of the penetration depth in the whole welding line is poor, and partial positions are likely to be subjected to cold joint (the penetration depth is too small), so that the stability of the product structure is influenced, and the risk of structural failure exists.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a laser welding control method, a laser welding control device, electronic equipment and a storage medium, which can solve the problems that the penetration fluctuation of a welding seam at different positions is large due to the use of a beam swing method in the prior art, the consistency of the penetration inside the whole welding seam is poor, partial positions are likely to be subjected to insufficient welding, the stability of a product structure is influenced, and the risk of structure failure exists.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a laser welding control method, including the steps of:
determining the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding;
and adjusting at least one control parameter in the welding parameters according to the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding so as to control the welding spot overlapping rate to be within a target range.
In some optional schemes, the relation between the welding parameter and the welding spot overlapping rate is as follows:
wherein gamma is the overlapping rate of welding points, v is the welding speed, the swinging frequency f is the number of times of completing periodic swinging in unit time, and delta s To swing distance, v L The beam swing speed is represented by a, a is a longitudinal swing radius, b is a transverse swing radius, a = b is a circular swing, a ≠ b is an elliptical swing, and delta s = v/f, when a is larger than or equal to b, v L ＝[2πb+4(a-b)]* f; when a < b, v L ＝[2πa+4(b-a)]*f。
In some alternatives, the target range of weld overlap is greater than 50%.
In some optional schemes, when the elliptical swing mode or the circular swing mode is adopted, the adjusting at least one control parameter of the welding parameters to control the welding spot overlapping rate within a target range includes:
if the control parameters of the welding parameters are welding speed, swing frequency and transverse swing radius, controlling the welding spot overlapping rate to be within a target range by one or more of reducing the welding speed, increasing the transverse swing radius and increasing the swing frequency;
and if the control parameters of the welding parameters are the swing distance and the transverse swing radius, controlling the welding spot overlapping rate within a target range by one or two of increasing the transverse swing radius and decreasing the swing distance.
In some optional schemes, when the elliptical swing mode is adopted and the control parameters of the welding parameters are the longitudinal swing radius, the transverse swing radius, the welding speed and the beam swing speed, the adjusting at least one control parameter of the welding parameters to control the welding point overlapping rate to be within the target range comprises:
and controlling the welding spot overlapping rate within a target range by one or more of reducing the longitudinal swing radius, increasing the transverse swing radius, reducing the welding speed and increasing the beam swing speed.
In some optional schemes, when the circular oscillation mode is adopted, and the control parameters of the welding parameters are welding speed and beam oscillation speed, the adjusting at least one control parameter of the welding parameters to control the welding spot overlapping rate within a target range includes:
and controlling the welding spot overlapping rate within a target range by one or two of reducing the welding speed and increasing the swinging speed of the light beam.
In some optional schemes, the adjusting at least one control parameter of the welding parameters to control the weld overlap ratio within a target range further includes: when one of the welding parameters is changed, one or more of other welding parameters are adjusted to control the welding spot overlapping rate within a target range.
In a second aspect, the present invention also provides a laser welding control apparatus, including:
the parameter relation determining module is used for determining the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding;
and the control module is used for adjusting at least one control parameter in the welding parameters according to the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding so as to control the welding spot overlapping rate to be within a target range.
In a third aspect, the present invention further provides an electronic device for executing the steps of the laser welding control method.
In a fourth aspect, the present invention further provides a computer storage medium, where a computer program is stored, where the computer program, when executed by a processor, implements the steps of the above-mentioned laser welding control method.
Compared with the prior art, the invention has the advantages that: the relation between the welding spot overlapping rate and the welding parameters is determined through theoretical calculation, and the welding spot overlapping rate is controlled within a target range by adjusting at least one control parameter in the welding parameters, so that the consistency of welding penetration is ensured. The problems that in the prior art, the penetration fluctuation of a welding seam at different positions is large due to the use of a light beam swinging method, the consistency of the penetration inside the whole welding seam is poor, partial positions are likely to be subjected to insufficient welding (the penetration is too small), the stability of a product structure is influenced, and the risk of structural failure is caused are solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a laser welding control method in an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the relationship between welding parameters and the overlap ratio of welding spots in an embodiment of the present invention;
fig. 3 is a block diagram schematically illustrating a structure of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a laser welding control method including:
s1, determining the relation between welding parameters of laser welding and the welding spot overlapping rate of the laser welding.
In this example, different swing forms, different welding parameters, and different relationships between the welding parameters and the overlapping rates of the welding spots, and the relationships between the welding parameters and the overlapping rates of the welding spots in different welding forms can be obtained by theoretical derivation.
And S2, adjusting at least one control parameter in the welding parameters according to the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding so as to control the welding spot overlapping rate within a target range.
In the scheme, the relation between the welding spot overlapping rate gamma and the welding parameters is determined by theoretical calculation, and a large number of research analysis and tests are carried out to obtain: when the welding equipment and the welding material are not changed, the welding parameters are changed to ensure that the larger the welding spot overlapping rate gamma is, the fluctuation delta of the penetration depth d The smaller the welding depth is, the higher the consistency of the welding depth is, the higher the stability of the product structure is, and when the overlapping rate of welding points is controlled within a target range, the better consistency of the welding depth can be ensured. When laser welding is carried out to design welding parameters, at least one control parameter in the welding parameters is adjusted according to the relation between the welding spot overlapping rate gamma and the welding parameters so as to control the welding spot overlapping rate within a target range and ensure the consistency of welding penetration.
For example, a beam swing method in laser welding is adopted to weld aluminum alloy and copper alloy, at least one control parameter in welding parameters is adjusted, and the overlapping rate of welding spots is controlled within a set target range, so that the welding penetration fluctuation can be within a set range, the penetration inside the whole welding line has better consistency, and the problems that due to insufficient welding, the stability of the product structure is influenced, and the risk of structure failure possibly exists are avoided.
In some alternative embodiments, as shown in fig. 2, the relationship between the welding parameters and the weld overlap ratio is:
wherein gamma is the overlapping rate of welding points, v is the welding speed, the swinging frequency f is the number of times of completing periodic swinging in unit time, and delta s To swing distance, v L The beam swing speed is represented by a, a is a longitudinal swing radius, b is a transverse swing radius, a = b is a circular swing, a ≠ b is an elliptical swing, and δ is represented by s ＝v/f，v L ＝[2πb+4(a-b)]*f，a≥b；v L ＝[2πa+4(b-a)]*f，a＜b。
In the embodiment, the relation between the welding spot overlapping rate γ and the welding parameters, including the circular swing mode and the elliptical swing mode, is obtained by theoretical calculation, and when the welding parameters are designed, the design can be directly performed according to the relation between the welding spot overlapping rate γ and the welding parameters, so that the welding spot overlapping rate is improved, the welding spot overlapping rate is in a target range, and the consistency of the welding penetration is ensured.
In some alternative embodiments, the target range of the weld overlap ratio is greater than 50%, which ensures a good consistency of weld penetration.
In some optional embodiments, when the elliptical swing mode or the circular swing mode is adopted, the adjusting at least one control parameter of the welding parameters to control the welding spot overlapping rate within a target range includes:
and if the control parameters of the welding parameters are welding speed, swing frequency and transverse swing radius, controlling the welding spot overlapping rate to be within a target range by one or more of reducing the welding speed, increasing the transverse swing radius and increasing the swing frequency.
And if the control parameters of the welding parameters are the swing distance and the transverse swing radius, controlling the welding spot overlapping rate within a target range by one or two of increasing the transverse swing radius and decreasing the swing distance.
In the present embodiment, when the control parameters of the welding parameters are the welding speed, the weaving frequency and the transverse weaving radius: overlap ratio of solder joints
And controlling the welding spot overlapping rate within a target range by one or more of reducing the welding speed v, increasing the transverse swing radius b and increasing the swing frequency f so as to obtain a welding seam with better penetration consistency. Wherein the plurality of means are at least two of simultaneously decreasing the welding speed v and increasing the weaving radius b, simultaneously decreasing the welding speed v and increasing the weaving frequency f, simultaneously increasing the weaving radius b and increasing the weaving frequency f, or simultaneously decreasing the welding speed v, increasing the weaving radius b and increasing the weaving frequency f.
When the control parameters of the welding parameters are the swing distance and the transverse swing radius: overlap ratio of solder joints
By increasing the transverse swing radius b and decreasing the swing pitch delta s One or two of the above steps are adopted, so that the overlapping rate gamma of the welding spots is within a target range, and a welding line with better fusion depth consistency can be obtained.
When an elliptical swing mode is adopted, a is not equal to b; and a = b when circular swing is adopted, wherein a is a longitudinal swing radius and b is a transverse swing radius.
In some optional embodiments, when the elliptical swing mode is adopted and the control parameters of the welding parameters are a longitudinal swing radius, a transverse swing radius, a welding speed and a beam swing speed, the adjusting at least one of the control parameters of the welding parameters to control the welding point overlapping rate within a target range includes: and controlling the welding spot overlapping rate within a target range by one or more of reducing the longitudinal swing radius, increasing the transverse swing radius, reducing the welding speed and increasing the beam swing speed.
In the present embodiment, when the radius of the longitudinal swing is larger than the radius of the lateral swing, the welding spot overlap ratio
Or when the longitudinal swing radius is smaller than the transverse swing radius, the welding spot overlapping rate
Can be controlled by reducing the longitudinal swing radius a, increasing the transverse swing radius b, reducing the welding speed v and increasing the beam swing speed v L The overlapping rate of welding spots is within a target range, so that a welding line with better fusion depth consistency is obtained.
In some optional embodiments, when the circular oscillation mode is adopted, and the control parameters of the welding parameters are a welding speed and a beam oscillation speed, the adjusting at least one of the welding parameters to control the welding spot overlapping rate within a target range includes: and controlling the welding spot overlapping rate within a target range by one or both of reducing the welding speed and increasing the swinging speed of the light beam.
When the circular swing mode is adopted and the control parameters of the welding parameters are the welding speed and the light beam swing speed, the welding spot overlapping rate
By reducing the welding speed v and increasing the beam swing speed v L And one or two of the welding points are controlled to be within a target range, so that a welding line with better fusion depth consistency is obtained.
In some optional embodiments, adjusting at least one control parameter of the welding parameters to control the weld overlap ratio within a target range further includes: when one of the welding parameters is changed, one or more of other control parameters in the welding parameters are adjusted to ensure that the overlapping rate of welding spots is within a target range, so as to ensure the consistency of welding penetration.
In this embodiment, in some scenarios, in order to ensure a certain welding efficiency, the welding speed needs to be increased, but according to the relationship between the welding parameters and the overlapping rate of the welding spots, the greater the welding speed, the smaller the overlapping rate γ of the welding spots, and at this time, the consistency of the penetration cannot be effectively ensured. By utilizing the relation between the welding spot overlapping rate gamma and the welding parameters, the welding spot overlapping rate can be increased by increasing the transverse swing radius b or increasing the swing frequency f, and the welding spot overlapping rate is controlled within a target range, so that a welding seam with better fusion depth consistency is obtained. Wherein the plurality includes at least two.
In some scenes, in order to ensure a certain welding penetration depth, the transverse swing radius b or the swing frequency f needs to be reduced, but the smaller the transverse swing radius b is, the smaller the swing frequency f is, the smaller the welding spot overlap rate gamma is, and the consistency of the penetration depth can not be effectively ensured at the moment. By utilizing the relation between the welding spot overlapping rate gamma and the welding parameters, the welding spot overlapping rate can be increased by reducing the welding speed v, and the welding spot overlapping rate is controlled within a target range, so that a welding seam with better fusion depth consistency is obtained.
For example, when the elliptical swing mode is adopted, the control parameters of the welding parameters are welding speed, swing frequency and transverse swing radius: overlap ratio of solder joints
If the welding speed is increased, the transverse swing radius and/or the swing frequency are/is increased; if the welding speed is reduced, reducing the transverse swing radius and/or the swing frequency; if the transverse swing radius or the swing frequency is increased, the welding speed is increased; if the weaving radius or the weaving frequency is reduced, the welding speed is reduced.
For another example, when the elliptical oscillation mode is adopted, and the control parameters of the welding parameters are the oscillation pitch and the transverse oscillation radius: overlap ratio of solder joints
If the swing pitch increasesIf the swing radius is large, the transverse swing radius is increased; if the swing distance is reduced, reducing the transverse swing radius; if the transverse swing radius is increased, the swing distance is increased; if the lateral swing radius is reduced, the swing pitch is reduced.
Several specific examples are given below:
when a 5083 aluminum alloy plate with the thickness of 4mm is welded, an IPG AMB4000/2000 laser is selected, the laser power is 3800/1900W, the diameter of a light spot is 420um, the welding speed v =70mm/s, the defocusing amount =0mm, the beam swinging mode is circular, the swinging radius a =1.25mm, the swinging frequency f =100Hz, the welding length is 65mm, high-purity nitrogen with the purity of 99.99% is adopted for front protection, and the front gas flow is 30L/min. And calculating to obtain the welding spot overlapping rate gamma =72%. The welding results show the fluctuation delta of the penetration d =0.319mm, the stability of the penetration is better.
5083 and 6063 aluminum alloy plates with the thickness of 4mm are spliced and welded. The laser uses IPG AMB4000/2000, the laser power is 3200/1200W, the spot diameter is 400um, the swing speed v L =700mm/s, defocus =0mm, beam swing mode is elliptical, longitudinal swing radius a =1.2mm, transverse swing radius b =1.6mm, swing pitch δ s =0.8mm, the welding length is 65mm, the front protection is carried out by using high-purity nitrogen gas with the purity of 99.99%, and the gas flow rate of the front is 30L/min. And calculating to obtain the welding spot overlapping rate gamma =75%. The welding results show the fluctuation delta of the penetration d =0.289mm, the stability of the penetration is better.
5083 and 6063 aluminum alloy plates with the thickness of 4mm are spliced and welded. The laser uses IPG AMB4000/2000, the laser power is 3200/1200W, the spot diameter is 400um, the swing speed v L =600mm/s, defocusing amount =0mm, the beam swing mode is an ellipse, the longitudinal swing radius a =1.2mm, the transverse swing radius b =1.6mm, and the swing distance δ s =0.7mm, the welding length is 65mm, the front protection is carried out by using high-purity nitrogen gas with the purity of 99.99%, and the gas flow rate of the front is 30L/min. And calculating to obtain the welding spot overlapping rate gamma =78%. The welding results show the fluctuation delta of the penetration d And the melting depth is not less than 0.163mm, and the stability of the melting depth is better.
For 5083 aluminum alloy plates with thickness of 4mmAnd (6) welding. The laser adopts IPG AMB4000/2000, the laser power is 3800/1900W, the spot diameter is 420um, the welding speed v =70mm/s, the defocusing amount =0mm, the light beam swinging mode is circular, the swinging radius a =1.25mm, the swinging frequency f =150Hz, the welding length is 65mm, the front protection is carried out by adopting 99.99% high-purity nitrogen, and the front gas flow is 30L/min. And calculating to obtain the welding spot overlapping rate gamma =79%. The welding results show the fluctuation delta of the penetration d =0.221mm, the stability of the penetration is better.
In addition, the present invention also provides a laser welding control device, including:
and the parameter relation determining module is used for determining the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding.
And the control module is used for adjusting at least one control parameter in the welding parameters according to the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding so as to control the welding spot overlapping rate to be within a target range.
When the welding control parameters are set in the laser welding, the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding is utilized, and the welding spot overlapping rate is controlled within a target range by adjusting at least one control parameter in the welding parameters, so that the consistency of the welding penetration is ensured. When one control parameter in the welding parameters is changed, adjusting at least one other control parameter in the welding parameters, increasing the overlapping rate of the welding points, controlling the overlapping rate of the welding points within a target range, and enabling the overlapping rate of the welding points to be within the target range so as to ensure the consistency of the welding penetration.
The apparatus provided by the above embodiments may be implemented in a form of a computer program, and the computer program may be run on the electronic device as shown in fig. 3. Or the device can be directly applied to welding equipment and used for controlling the beam oscillation parameters of laser welding.
Referring to fig. 3, fig. 3 is a schematic block diagram of an electronic device according to an embodiment of the present disclosure. The electronic device may be a terminal.
As shown in fig. 3, the electronic device includes a processor, a memory, and a network interface connected by a system bus, wherein the memory may include a nonvolatile storage medium and an internal memory.
The non-volatile storage medium may store an operating system and a computer program. The computer program includes program instructions that, when executed, cause a processor to perform any one of the laser welding control methods.
The processor is used for providing calculation and control capability and supporting the operation of the whole electronic equipment.
The internal memory provides an environment for running a computer program in the nonvolatile storage medium, and the computer program, when executed by the processor, causes the processor to execute any one of the laser welding control methods.
The network interface is used for network communication, such as sending assigned tasks and the like. Those skilled in the art will appreciate that the architecture shown in fig. 3 is a block diagram of only a portion of the architecture associated with the subject application, and does not constitute a limitation on the electronic devices to which the subject application may be applied, and that a particular electronic device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
It should be understood that the Processor may be a Central Processing Unit (CPU), and the Processor may be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, etc. Wherein a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
Embodiments of the present application further provide a computer storage medium, where a computer program is stored on the computer storage medium, where the computer program includes program instructions, and a method implemented when the program instructions are executed may refer to the embodiments of the present application.
The computer storage medium may be an internal storage unit of the electronic device described in the foregoing embodiment, for example, a hard disk or a memory of the electronic device. The computer storage medium may also be an external storage device of the electronic device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the electronic device.
In summary, the relationship between the welding spot overlap rate γ and the welding parameters is obtained by theoretical calculation, and a large number of research analyses and experiments show that: when the welding equipment and the welding material are not changed, the welding parameters are changed to ensure that the larger the welding spot overlapping rate gamma is, the fluctuation delta of the penetration depth d The smaller the weld penetration, the higher the consistency of the weld penetration and the higher the stability of the product structure. When welding parameters are designed in the laser welding process, the welding spot overlapping rate is controlled within a target range by adjusting at least one control parameter in the welding parameters according to the relation between the welding spot overlapping rate gamma and the welding parameters, so that the consistency of welding penetration is ensured.
When one of the welding parameters is changed, at least one of the other welding parameters is adjusted, and the overlapping rate of the welding spots is controlled within a target range, so that the consistency of the welding penetration is ensured. For example, the welding speed needs to be increased, the welding spot overlapping rate is reduced, the relation between the welding spot overlapping rate gamma and the welding parameters is utilized, the transverse swing radius b is increased or the swing frequency f is increased to increase the welding spot overlapping rate, the welding spot overlapping rate is controlled within a target range, and a welding seam with good fusion depth consistency is obtained. For example, in order to ensure a certain welding penetration depth, the transverse swing radius b or the swing frequency f needs to be reduced, the welding spot overlapping rate is reduced, the welding spot overlapping rate can be increased by reducing the welding speed v by utilizing the relation between the welding spot overlapping rate gamma and the welding parameters, the welding spot overlapping rate is controlled within a target range, and a welding seam with better penetration depth consistency is obtained.
It should be noted that, in the present application, moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A laser welding control method, characterized by comprising the steps of:
determining the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding;
and adjusting at least one control parameter in the welding parameters according to the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding so as to control the welding spot overlapping rate to be within a target range.
2. The laser welding control method according to claim 1, characterized in that: the relation between the welding parameters and the overlapping rate of the welding spots is as follows:
whereinGamma is the overlap rate of welding spots, v is the welding speed, the frequency of oscillation f is the number of times of periodic oscillation in unit time, delta s To swing distance, v L The beam swing speed is represented by a, a is a longitudinal swing radius, b is a transverse swing radius, a = b is a circular swing, a ≠ b is an elliptical swing, and delta s = v/f, when a is larger than or equal to b, v L ＝[2πb+4(a-b)]* f; when a < b, v L ＝[2πa+4(b-a)]*f。
3. The laser welding control method according to claim 1, wherein the target range of the weld overlap ratio is greater than 50%.
4. The laser welding control method according to any one of claims 1 to 3, wherein the adjusting at least one of the welding parameters to control the weld overlap ratio within a target range when an elliptical weaving manner or a circular weaving manner is employed comprises:
if the control parameters of the welding parameters are welding speed, swing frequency and transverse swing radius, controlling the welding spot overlapping rate to be within a target range by one or more of reducing the welding speed, increasing the transverse swing radius and increasing the swing frequency;
and if the control parameters of the welding parameters are the swing distance and the transverse swing radius, controlling the welding spot overlapping rate within a target range by one or two of increasing the transverse swing radius and decreasing the swing distance.
5. The laser welding control method according to any one of claims 1 to 3, wherein when an elliptical weaving manner is employed and control parameters of welding parameters are a longitudinal weaving radius, a transverse weaving radius, a welding speed, and a beam weaving speed, said adjusting at least one of the control parameters of the welding parameters to control the weld overlap ratio within a target range comprises:
and controlling the welding spot overlapping rate within a target range by one or more of reducing the longitudinal swing radius, increasing the transverse swing radius, reducing the welding speed and increasing the beam swing speed.
6. The laser welding control method according to any one of claims 1 to 3, wherein when the circular oscillation mode is adopted and the control parameters of the welding parameters are a welding speed and a beam oscillation speed, the adjusting at least one of the welding parameters to control the weld spot overlap ratio within a target range includes:
and controlling the welding spot overlapping rate within a target range by one or both of reducing the welding speed and increasing the swinging speed of the light beam.
7. A laser welding control method as defined in any one of claims 1-3, wherein said adjusting at least one of said welding parameters to control said spot weld overlap ratio within a target range further comprises: when one of the welding parameters is changed, one or more of other control parameters in the welding parameters are adjusted to control the welding spot overlapping rate within a target range.
8. A laser welding control apparatus, characterized by comprising:
the parameter relation determining module is used for determining the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding;
and the control module is used for adjusting at least one control parameter in the welding parameters according to the relation between the welding parameters of the laser welding and the welding spot overlapping rate of the laser welding so as to control the welding spot overlapping rate to be within a target range.
9. An electronic device characterized by being configured to execute the laser welding control method according to any one of claims 1 to 7.
10. A computer storage medium, characterized in that the computer storage medium has a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the laser welding control method according to any one of claims 1 to 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117564466A (en) * | 2024-01-16 | 2024-02-20 | 珠海市镭通激光科技有限公司 | Laser welding packaging method for cavity wall of microelectronic device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117564466A (en) * | 2024-01-16 | 2024-02-20 | 珠海市镭通激光科技有限公司 | Laser welding packaging method for cavity wall of microelectronic device |
| CN117564466B (en) * | 2024-01-16 | 2024-03-19 | 珠海市镭通激光科技有限公司 | Laser welding packaging method for cavity wall of microelectronic device |
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