CN114799587A - Composite welding method and device for silicon carbide reinforced aluminum matrix composite - Google Patents
Composite welding method and device for silicon carbide reinforced aluminum matrix composite Download PDFInfo
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- CN114799587A CN114799587A CN202210455279.7A CN202210455279A CN114799587A CN 114799587 A CN114799587 A CN 114799587A CN 202210455279 A CN202210455279 A CN 202210455279A CN 114799587 A CN114799587 A CN 114799587A
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Abstract
The invention discloses a composite welding method and a device for a silicon carbide reinforced aluminum-based composite material, which comprises the following steps: s1: the method comprises the following steps that a laser welding head emits laser beams to carry out laser welding on a workpiece to be welded along a welding direction, a friction stir welding processing head follows the laser welding head, the friction stir welding processing head carries out friction stir welding on a welding seam after laser welding along the welding direction by utilizing the waste heat after a laser welding molten pool is solidified, and the width of a stirring pool formed by the friction stir welding is larger than that of the laser welding molten pool; s2: and after the laser welding head reaches the welding end point, stopping emitting the laser beam, moving the laser welding head out of the workpiece to be welded, and then moving the friction stir welding processing head out of the workpiece to be welded after the friction stir welding processing head reaches the welding end point, so that the welding is finished. The invention can weld the silicon carbide reinforced aluminum matrix composite material with high efficiency, has high welding quality and can reduce welding cost.
Description
Technical Field
The invention relates to the technical field of special material welding, in particular to a composite welding method and a composite welding device for a silicon carbide reinforced aluminum-based composite material.
Background
The aluminum alloy has the advantages of high specific strength, good corrosion resistance, good electric and heat conducting properties and the like, is one of metal materials which are most widely applied in the fields of aerospace and the like, and the aluminum matrix composite material gradually becomes a current research hotspot due to the comprehensive properties of a matrix and a reinforcing material. Compared with other particles, the silicon carbide particles have the characteristics of high strength, high hardness, high laser absorptivity, good combination with aluminum alloy and the like, and have been practically applied in the fields of aerospace and the like.
Laser welding is one of the important aspects of the application of laser material processing technology, and is an efficient and precise welding method by using a laser beam with high energy density as a heat source. The welding process belongs to a heat conduction type, namely, the surface of a workpiece is heated by laser radiation, the surface heat is diffused inwards through heat conduction, and the workpiece is melted by controlling parameters such as the width, the energy, the peak power, the repetition frequency and the like of laser pulse to form a specific molten pool.
The friction stir welding technology is invented in 1991 by British welding research institute, and is widely applied to the field of light metal structures such as aluminum alloy, magnesium alloy and the like at present. The friction stir welding process is that a cylindrical or other shaped (such as a threaded cylinder) stirring pin extends into the joint of the workpieces, and the stirring pin is rubbed with the materials of the welded workpieces through the high-speed rotation of a welding head, so that the temperature of the materials at the joint is increased and softened. And simultaneously, the materials are subjected to stirring friction to complete welding.
However, welding the silicon carbide reinforced aluminum-based composite material only by laser welding or friction stir welding has various problems, which are mainly reflected in that the non-uniformly distributed flaky and layered Al is generated in the molten weld zone after the laser welding of the silicon carbide reinforced aluminum-based composite material 4 C 3 The crystal structure has poor plasticity and high brittleness, and greatly influences the mechanical property of a welding seam area. Uneven distribution and burning loss of the silicon carbide reinforcing phase also occur in a heat affected zone, so that the mechanical property of the material is changed, and the welding quality is influenced. Due to the high hardness and the high strength of the silicon carbide reinforced aluminum-based composite material, the silicon carbide reinforced aluminum-based composite material is rubbed by stirringThe friction resistance of the welding mode is large, the abrasion of the stirring needle is greatly accelerated, the machining efficiency is low, and the cost is high. The existing friction stir-laser welding patents do not consider the problem of great difference of weld widths between laser welding and friction stir welding, for example, a Zn-Cu-Ti alloy plate material with the thickness of 1mm is taken as an example, the average width of the weld of a friction stir welding joint is 4.5mm, the average width of the weld of a laser welding joint is 1.0mm, and the great weld difference causes that the residual heat of the material after laser welding can not effectively reduce the resistance in friction stir welding, so that the composite welding combination effect is poor, thereby providing a composite welding method for silicon carbide reinforced aluminum-based composite material, and becoming a technical problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a composite welding method and a composite welding device for a silicon carbide reinforced aluminum-based composite material, which are used for solving the problems in the prior art, can efficiently weld the silicon carbide reinforced aluminum-based composite material, have high welding quality and can reduce the welding cost.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a composite welding method for a silicon carbide reinforced aluminum-based composite material, which comprises the following steps of:
s1: the laser welding head emits laser beams to carry out laser welding on the workpiece to be welded along the welding direction, the friction stir welding processing head follows the laser welding head, the residual heat after the solidification of a laser welding molten pool is utilized to carry out friction stir welding on the welding seam after the laser welding along the welding direction, and the width of a stirring pool formed by the friction stir welding is larger than that of the laser welding molten pool;
s2: and after the laser welding head reaches the welding end point, stopping emitting the laser beam, moving the laser welding head out of the workpiece to be welded, and then moving the friction stir welding processing head out of the workpiece to be welded after the friction stir welding processing head reaches the welding end point, so that the welding is finished.
Preferably, the laser welding head is a planetary laser welding head, the planetary laser welding head emits a main beam and a side beam rotating around the main beam, and the main beam and the side beam are used for laser welding of the workpiece to be welded.
Preferably, the power of the main beam emitted by the planetary laser welding head and the power, frequency, amplitude and spacing from the main beam are controlled, and the planetary laser welding head is controlled to perform laser welding at a speed v in the welding direction, according to the thickness of the workpiece to be welded.
Preferably, the distance between the friction stir welding processing head and the laser welding head is determined according to the power of a main beam, the welding speed, the power of a secondary beam, the frequency and the amplitude of the main beam and the size of the formed laser welding molten pool, the size of a stirring pin of the friction stir welding processing head is determined according to the size of the laser welding molten pool, and the stirring depth and the rotation speed of the stirring pin of the friction stir welding processing head are determined according to the thickness of a workpiece to be welded.
Preferably, the friction stir welding processing head enters the solidified weld at the tail of the laser welding pool in a high-speed rotating manner and performs friction stir welding at the same speed as the laser welding speed.
The invention also provides a composite welding device for the silicon carbide reinforced aluminum matrix composite, which is used for welding by adopting the composite welding method for the silicon carbide reinforced aluminum matrix composite and comprises a composite welding system, wherein the composite welding system comprises a numerical control machining table, a laser welding head, a stirring friction welding machining head and a controller, the numerical control machining table is used for fixedly installing a workpiece to be welded, the controller controls the power of a laser beam emitted by the laser welding head, the laser welding speed, and the stirring depth and the rotating speed of a stirring needle of the stirring friction welding machining head according to the thickness of the workpiece to be welded, and the controller can also control the stirring friction welding speed.
Preferably, the laser welding head is a planetary laser welding head, the planetary laser welding head can emit a main beam and a side beam rotating around the main beam when working, and the main beam and the side beam are used for laser welding of the workpieces to be welded.
Preferably, the device further comprises a reliability control system, the reliability control system comprises a displacement device and the controller, the controller determines the distance between the friction stir welding head and the laser welding head according to the power of a main beam emitted by the planetary laser welding head, the welding speed, the power of a side beam, the frequency, the amplitude, the distance between the main beam and the laser welding head and the size of a formed laser welding molten pool, and the displacement device is used for adjusting and controlling the distance between the friction stir welding head and the laser welding head.
Compared with the prior art, the invention achieves the following technical effects:
the invention provides a composite welding method and a device for a silicon carbide reinforced aluminum-based composite material, which adopt a laser welding head to carry out laser welding operation on a workpiece to be welded, remove a silicon carbide reinforced phase in the material, ensure the welding penetration of the material by using a main beam in a planetary laser welding head, improve the penetration capacity of the main beam by stirring of a secondary beam, control the size of a molten pool by combining with the main beam, form more proper molten pool width and depth, efficiently and controllably match a stirring friction welding head, and realize the efficient high-quality composite welding of the silicon carbide reinforced aluminum-based composite material. The friction stir welding processing head follows the laser welding head, and uses the residual heat after the solidification of the laser welding pool to carry out friction stir welding on the welding seam after laser welding, the residual heat after the solidification of the laser welding pool reduces the resistance of materials, improves the efficiency of friction stir welding, reduces the abrasion of a stirring pin of the friction stir welding processing head, and reduces the welding cost, when in friction stir welding, the width of a stirring pool formed by the friction stir welding is larger than the width of the laser welding pool, the width of the stirring pool covers the welding seam after laser welding, the thermal influence area after laser welding and part of base metal on the workpiece to be welded, the friction stir welding processing head smashes the lamellar brittle phase generated in the welding seam after laser welding, the thermal influence area after laser welding and the silicon carbide reinforcing phase in the part of base metal on the workpiece to be welded under the minimum friction resistance, so that the finally generated welding seam still has the silicon carbide reinforcing phase and the hard brittle phase in dispersion distribution, the strength and the hardness of the welding line are improved, the comprehensive performance of the welding line after welding is improved, and the welding quality is higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a hybrid welding apparatus provided in the present invention;
FIG. 2 is a schematic longitudinal cross-sectional structural view of a welding process of the present invention;
FIG. 3 is a schematic top view of the welding process of the present invention;
FIG. 4 is a flow chart of the welding process of the present invention;
in the figure: 1-laser welding head, 2-workpiece to be welded, 3-friction stir welding head, 4-laser welding pool, 5-post laser welding seam, 6-stirring pool, 7-main beam, 8-auxiliary beam, 9-controller, 10-displacement device, 11-laser welding keyhole, 12-welding seam, and 13-post laser welding heat affected zone.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
The invention aims to provide a composite welding method and a composite welding device for a silicon carbide reinforced aluminum-based composite material, which are used for solving the problems in the prior art, can efficiently weld the silicon carbide reinforced aluminum-based composite material, have high welding quality and can reduce the welding cost.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 4, the present embodiment provides a composite welding method for a silicon carbide reinforced aluminum matrix composite, including the following steps:
s1: the laser welding head 1 emits laser beams to carry out laser welding on the workpiece 2 to be welded along the welding direction, the friction stir welding processing head 3 follows the laser welding head 1, the residual heat after the solidification of the laser welding molten pool 4 is utilized to carry out friction stir welding on the welding line 5 after the laser welding along the welding direction, and the width L of the stirring pool 6 formed by the friction stir welding is enabled to be L 3 Greater than the width L of the laser weld pool 4 4 ；
S2: and stopping emitting the laser beams after the laser welding head 1 reaches the welding end point, moving the laser welding head 1 out of the workpiece 2 to be welded, and then moving the friction stir welding processing head 3 out of the workpiece 2 to be welded after the friction stir welding processing head 3 reaches the welding end point, so that the welding is finished.
The method realizes the melting recrystallization of materials by laser welding, realizes the secondary strengthening of metallographic structures by a friction stir welding mode, adopts a laser welding head 1 to carry out laser welding operation on a workpiece 2 to be welded, removes silicon carbide reinforced phases in the materials, adopts a friction stir welding processing head 3 to follow the laser welding head 1, utilizes the residual heat after the solidification of a laser welding molten pool 4 to carry out friction stir welding on a welding line 5 after the laser welding, reduces the resistance of the materials by the residual heat after the solidification of the laser welding molten pool 4, improves the efficiency of friction stir welding, reduces the abrasion of a stirring pin of the friction stir welding processing head 3, reduces the welding cost, and forms a width L of a stirring pool 6 due to the friction stir welding when the friction stir welding is carried out 3 Greater than the width L of the laser weld pool 4 4 The width of the stirring pool 6 covers the welding seam 5 after laser welding, the heat affected zone 13 after laser welding and part of the base metal on the workpiece 2 to be welded, and the stirring friction welding processing head 3 carries out laser welding on the lamellar brittle phase generated in the welding seam 5 after laser welding and the heat shadow after laser welding under the condition of extremely small friction resistanceThe silicon carbide reinforced phases in the parent metal of the sound zone 13 and the upper part of the workpiece 2 to be welded are uniformly broken and distributed, so that the finally generated welding line 12 still has the silicon carbide reinforced phases and the hard and brittle phases which are distributed in a dispersed mode, the strength and the hardness of the welding line 12 are improved, the comprehensive performance of the welding line after welding is improved, and the welding quality is higher.
In this embodiment, the laser welding head 1 is a planetary laser welding head, the planetary laser welding head emits a main beam 7 and a sub beam 8 rotating around the main beam 7, and the main beam 7 and the sub beam 8 are used to perform laser welding on the workpiece 2 to be welded. In the laser welding process, the main beam 7 forms a laser welding keyhole 11 on the surface of a workpiece 2 to be welded to ensure welding penetration, the auxiliary beam 8 stirs the laser welding pool 4 to eliminate air holes therein to ensure laser welding quality, according to the condition of plate thickness, the spacing distance position parameter between the auxiliary beam 8 and the main beam 7, the processing parameters of the main beam 7, the auxiliary beam 8 and the like are determined before welding to form the size of the laser welding pool 4 matched with the plate thickness and the welding position, the size of the laser welding pool 4 can influence the temperature and the range of a heat affected area 13 after laser welding, the large decomposition of a silicon carbide reinforcing phase in the heat affected area 13 after laser welding due to overhigh temperature and overlarge range of the heat affected area is avoided, if the auxiliary beam 8 is too close to the boundary of the laser welding pool 4, the size of the laser welding pool 4 can be increased and the temperature of the heat affected area 13 after laser welding can be increased, thereby forming a molten pool width which is more matched with the stirring pool 6 and realizing high-efficiency composite welding.
In the present embodiment, the power of the main beam 7 emitted by the planetary laser welding head and the power, frequency, amplitude and spacing L from the main beam 7 of the side beam 8 are controlled according to the thickness of the workpiece 2 to be welded 2 And controlling the planetary laser welding head to perform laser welding along the welding direction at a speed v. The workpieces 2 to be welded with different thicknesses need different powers of the main light beam 7 to ensure that sufficient penetration is obtained, the power of the auxiliary light beam 8 is controlled to ensure that the auxiliary light beam 8 can be driven into the laser welding pool 4 for a sufficient distance to achieve a better stirring effect, the workpieces 2 to be welded with different thicknesses form different laser welding pools 4, the sizes of the laser welding pools 4 are different, and the defects of non-fusion, air holes and the like generated in the workpieces 2 to be welded are correspondingly increased, so that the requirements are metThe auxiliary beam 8 is required to have enough power, amplitude (distance between the main beam and the auxiliary beam) and better stirring frequency to stir the laser welding pool 4, so that the escape of air holes is promoted, and the solute of the laser welding pool 4 is promoted to be uniform.
In the present embodiment, the power, welding speed v of the main beam 7 and the power, frequency, amplitude of the side beam 8, and the distance L from the main beam 7 are determined according to the planetary laser welding head 2 And the size of the formed laser weld pool 4, determining the spacing L between the friction stir welding head 3 and the laser welding head 1 1 The parameters of the corresponding laser welding head 1 are confirmed by the workpieces 2 to be welded with different thicknesses, the size of the formed laser welding pool 4 is changed, therefore, the solidified tail position of the laser welding pool 4 is also changed, and the distance L between the friction stir welding processing head 3 and the laser welding head 1 needs to be adjusted 1 To adapt to the solidified tail position of the laser welding molten pool 4; according to the size of the laser welding molten pool 4, determining the size of a stirring pin of the friction stir welding processing head 3 to form a stirring pool 6 with a proper width; the stirring depth H and the rotation speed omega of the stirring pin of the stirring friction welding processing head 3 are determined according to the thickness of the workpiece 2 to be welded, the length of the stirring pin of the stirring friction welding processing head 3 needs to be adjusted to achieve enough stirring depth due to the change of the plate thickness of the workpiece 2 to be welded, the amount of brittle phases generated in a welding seam 5 after laser welding is increased due to the change of the thickness, the size of the welding seam is correspondingly increased, and the rotation speed of the stirring friction welding processing head 3 needs to be adjusted to obtain better stirring effect.
In this embodiment, the friction stir welding processing head 3 enters the welding seam solidified at the tail of the laser welding pool 4 in a high-speed rotation manner, and performs friction stir welding at the same speed as the laser welding speed v, so that the residual heat of the welding seam 5 after laser welding can be utilized in time, and the friction stir welding processing head 3 can perform the stirring processing with the minimum resistance.
In some embodiments, the thickness of the workpiece 2 to be welded is between 2mm and 15 mm; the power of the main beam 7 and the side beam 8 is 1500W-10 KW; distance L between main beam 7 and side beam 8 2 0.5-3 mm; movement of a planetary laser welding headThe speed (welding speed v) is 0.5m/min to 2 m/min; distance L between friction stir welding head 3 and laser welding head 1 1 5 mm-15 mm, the friction stir welding processing head 3 is close to the tail part of a laser welding molten pool 4 formed by the laser welding head 1 and is positioned at a solidified laser welded welding seam 5 with the temperature slightly lower than the solidus line; the stirring depth H of a stirring pin of the stirring friction welding processing head 3 is equal to the thickness of the workpiece 2 to be welded, and the optimal range of the rotation speed omega of the stirring pin is 5000-15000 rpm; the width L of a semi-solid stirring pool 6 formed by the secondary welding of the friction stir welding processing head 3 3 Greater than the width L of the laser weld pool 4 4 Width L of 3 Covering the welding seam 5 after laser welding, the heat affected zone 13 after laser welding and the part of the base material on the workpiece 2 to be welded, and forming the flaky and laminar brittle Al in the welding seam 5 after laser welding 4 C 3 The crystal and the SiC reinforcing phase in the heat affected zone 13 after laser welding and the base metal on the part of the workpiece 2 to be welded are broken and uniformly distributed, so that the strength and the hardness of the welding seam 5 after laser welding are improved, and the comprehensive performance of the welding seam after welding is improved.
Example two
As shown in fig. 1-4, the present embodiment provides a composite welding apparatus for a silicon carbide reinforced aluminum matrix composite, which performs welding by using the composite welding method for a silicon carbide reinforced aluminum matrix composite described in the first embodiment, and includes a composite welding system, where the composite welding system includes a numerical control processing table, a laser welding head 1, a friction stir welding processing head 3, and a controller 9, the numerical control processing table is used to fixedly mount a workpiece 2 to be welded, the controller 9 controls power of a laser beam emitted by the laser welding head 1, a laser welding speed v, a stirring depth H of a stirring pin of the friction stir welding processing head 3, and a rotation speed ω according to a thickness of the workpiece 2 to be welded, and the controller 9 can also control the friction stir welding speed. The laser welding head 1 and the friction stir welding head 3 can move in a plane through a servo motor displacement platform.
In this embodiment, the laser welding head 1 is a planetary laser welding head, the planetary laser welding head can emit a main beam 7 and an auxiliary beam 8 rotating around the main beam 7 when working, the workpiece 2 to be welded is laser-welded by the main beam 7 and the auxiliary beam 8, the main beam 7 forms a laser welding keyhole 11 on the surface of the workpiece 2 to be welded, so as to ensure the welding penetration, and the auxiliary beam 8 stirs the laser welding pool 4 to eliminate air holes therein, so as to ensure the laser welding quality.
In the embodiment, the device further comprises a reliability control system, the reliability control system comprises a displacement device 10 and a controller 9, and the controller 9 controls the welding speed v and the power, the frequency and the amplitude of the side beam 8 according to the power and the welding speed v of the main beam 7 emitted by the planetary laser welding head and the distance L between the main beam 7 and the side beam 8 2 And the size of the formed laser weld pool 4, determining the spacing L between the friction stir welding head 3 and the laser welding head 1 1 And the distance L between the friction stir welding head 3 and the laser welding head 1 is adjusted by the displacement device 10 1 And (5) performing adjustment control. In order to obtain excellent welding quality in workpieces 2 to be welded with different thicknesses and different processing positions, the power of a main beam 7 with different powers is used for ensuring that sufficient penetration is obtained, the power of an auxiliary beam 8 is controlled for ensuring that the auxiliary beam 8 can be driven into a laser welding pool 4 for a sufficient distance to achieve a better stirring effect, the sizes of laser welding pools 4 formed on the workpieces 2 to be welded with different thicknesses are different, the generated defects of unfused, air holes and the like are correspondingly increased, the auxiliary beam 8 is required to have sufficient power, amplitude (distance between the main beam and the auxiliary beam) and a stirring frequency to stir the laser welding pools 4, the air holes are promoted to escape, and the solute of the laser welding pools 4 is promoted to be uniform. The size of the laser welding molten pool 4 can be changed, the tail position of the laser welding molten pool 4 is changed, the size of the welding seam 5 after laser welding is also changed, and the distance L between the friction stir welding processing head 3 and the laser welding head 1 needs to be adjusted 1 And the size of the stirring pin and the like so as to adapt to the solidification position of the tail part of the laser welding molten pool 4. Wherein the displacement device can be a servo motor displacement platform.
As shown in fig. 4, it is a working flow chart of the welding process of the present invention:
(1) fixedly mounting a workpiece 2 to be welded on a numerical control machining table;
(2) setting operation parameters of the composite welding device, including the power of the main beam 7 and the auxiliary beam 8, the distance between the main beam and the auxiliary beam, the frequency of the auxiliary beam 8, the welding speed, the distance between the planetary laser welding head and the friction stir processing head 3, the rotating speed of the friction stir processing head 3, the depth of a stirring pin, the size of a stirring pool and the like;
(3) the system is electrified, and the device is started;
(4) the planetary system laser welding head welds the workpiece 2 to be welded to form a post-laser-welding weld seam 5;
(5) the friction stir welding machining head 3 works in the same direction and covers the welded seam 5 after laser welding, the heat affected zone 13 after laser welding and the mother material on the upper part of the workpiece 2 to be welded for secondary optimized welding;
(6) the planetary laser welding head and the friction stir welding head 3 reach the welding end point in sequence, and the welding is finished;
(7) and the system is powered off and the device is closed.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A composite welding method for a silicon carbide reinforced aluminum matrix composite is characterized by comprising the following steps:
s1: the laser welding head emits laser beams to carry out laser welding on the workpiece to be welded along the welding direction, the friction stir welding processing head follows the laser welding head, the residual heat after the solidification of a laser welding molten pool is utilized to carry out friction stir welding on the welding seam after the laser welding along the welding direction, and the width of a stirring pool formed by the friction stir welding is larger than that of the laser welding molten pool;
s2: and after the laser welding head reaches the welding end point, stopping emitting the laser beam, moving the laser welding head out of the workpiece to be welded, and then moving the friction stir welding processing head out of the workpiece to be welded after the friction stir welding processing head reaches the welding end point, so that the welding is finished.
2. The composite welding method for the silicon carbide reinforced aluminum matrix composite according to claim 1, characterized in that: the laser welding head adopts a planetary system laser welding head, the planetary system laser welding head emits a main beam and an auxiliary beam rotating around the main beam, and the main beam and the auxiliary beam are used for carrying out laser welding on the workpiece to be welded.
3. The composite welding method for the silicon carbide reinforced aluminum matrix composite according to claim 2, characterized in that: and according to the thickness of a workpiece to be welded, controlling the power of a main beam emitted by the planetary system laser welding head, the power, the frequency, the amplitude and the distance between the main beam and a side beam, and controlling the planetary system laser welding head to carry out laser welding along the welding direction at a speed v.
4. The composite welding method for the silicon carbide reinforced aluminum matrix composite according to claim 3, characterized in that: determining the distance between the friction stir welding machining head and the laser welding head according to the power of a main beam, the welding speed, the power, the frequency and the amplitude of a secondary beam emitted by the planetary laser welding head, the distance between the friction stir welding machining head and the laser welding head and the size of the formed laser welding molten pool, determining the size of a stirring pin of the friction stir welding machining head according to the size of the laser welding molten pool, and determining the stirring depth and the rotating speed of the stirring pin of the friction stir welding machining head according to the thickness of a workpiece to be welded.
5. The composite welding method for the silicon carbide reinforced aluminum-based composite material according to claim 1, characterized in that: and the friction stir welding processing head enters a welding seam solidified at the tail part of the laser welding molten pool in a high-speed rotating mode and performs friction stir welding at the speed same as the laser welding speed.
6. A composite welding device for silicon carbide reinforced aluminum matrix composite, which is welded by the composite welding method for the silicon carbide reinforced aluminum matrix composite as claimed in any one of claims 1 to 5, and is characterized in that: including the hybrid welding system, the hybrid welding system include the numerical control processing platform laser welder head friction stir welding processing head and controller, the numerical control processing platform is used for fixed mounting to treat the welding workpiece, the controller is according to the thickness control of treating the welding workpiece laser beam's that the laser welder head launches power, laser welding speed the depth of mixing and the rotation rate of the stirring needle of friction stir welding processing head, the controller can also control friction stir welding speed.
7. The composite welding device for silicon carbide reinforced aluminum matrix composite according to claim 6, wherein: the laser welding head is a planetary system laser welding head, the planetary system laser welding head can emit a main beam and an auxiliary beam rotating around the main beam when working, and the main beam and the auxiliary beam are used for carrying out laser welding on a workpiece to be welded.
8. The composite welding device for silicon carbide reinforced aluminum matrix composite according to claim 7, characterized in that: the device comprises a planetary laser welding head, a main beam, a friction stir welding head, a laser welding head and a controller, wherein the planetary laser welding head is arranged on the planetary laser welding head, the controller is used for determining the distance between the friction stir welding head and the laser welding head according to the power of the main beam, the welding speed, the power of a secondary beam, the frequency, the amplitude of the main beam, the distance between the main beam and the size of a formed laser welding molten pool, and the distance between the friction stir welding head and the laser welding head is adjusted and controlled through the displacement device.
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| CN116727860A (en) * | 2023-04-11 | 2023-09-12 | 吉林农业科技学院 | High-nitrogen steel laser wire filling-friction stir composite welding process |
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| CN113182675A (en) * | 2021-04-06 | 2021-07-30 | 哈尔滨焊接研究院有限公司 | Multi-watt laser double-light-beam welding method for inhibiting welding liquid column and splashing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116727860A (en) * | 2023-04-11 | 2023-09-12 | 吉林农业科技学院 | High-nitrogen steel laser wire filling-friction stir composite welding process |
| CN116727860B (en) * | 2023-04-11 | 2024-01-05 | 吉林农业科技学院 | High-nitrogen steel laser wire filling-friction stir composite welding process |
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