CN114799587A - Composite welding method and device for silicon carbide reinforced aluminum matrix composite - Google Patents

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

A composite welding method and device for silicon carbide reinforced aluminum matrix composite materials

technical field

The invention relates to the technical field of special material welding, in particular to a composite welding method and device for silicon carbide reinforced aluminum-based composite materials.

Background technique

Aluminum alloy has the advantages of high specific strength, good corrosion resistance and good electrical and thermal conductivity. It is one of the most widely used metal materials in aerospace and other fields. research hotspot. Compared with other particles, silicon carbide particles have the characteristics of high strength, high hardness, high laser absorption rate, and good bonding with aluminum alloys, and have been practically used in aerospace and other fields.

Laser welding is one of the important aspects of the application of laser material processing technology. It is an efficient and precise welding method by using a high energy density laser beam as a heat source. The welding process is of the heat conduction type, that is, the surface of the workpiece is heated by laser radiation, and the surface heat diffuses to the interior through heat conduction.

Friction stir welding technology was invented by the British Welding Institute in 1991, and it has been widely used in the field of light metal structures such as aluminum alloys and magnesium alloys. The welding process of friction stir welding is that a stirring needle of a cylinder or other shape (such as a threaded cylinder) is inserted into the joint of the workpiece, and the high-speed rotation of the welding head makes it rub against the material of the welding workpiece, so as to make the connection part The material softens as the temperature rises. At the same time, the material is subjected to friction stir to complete the welding.

However, there are still various problems in welding silicon carbide reinforced aluminum matrix composites only by laser welding or friction stir welding. The flaky and layered Al ₄ C ₃ crystal structure has poor plasticity and high brittleness, which greatly affects the mechanical properties of the weld area. In the heat-affected zone, uneven distribution and burning of SiC reinforcement phase will also occur, resulting in material mechanical properties jitter, which affects the welding quality. However, due to the high hardness and high strength of the silicon carbide reinforced aluminum matrix composite material, the friction stir welding method has a large friction resistance, which greatly accelerates the wear of the stirring needle, and the processing efficiency is low and the cost is high. None of the existing friction stir-laser welding patents consider the difference in weld width between laser welding and friction stir welding. Taking the 1mm thick Zn-Cu-Ti alloy plate material as an example, the average width of the weld seam of the friction stir welding joint is 4.5mm, the average width of the laser welding head weld is 1.0mm, the huge difference in the weld leads to the waste heat of the material after laser welding can not effectively reduce the resistance in friction stir welding, and its composite welding combination effect is poor, so provide a kind of silicon carbide. The composite welding method of reinforced aluminum matrix composites has become a technical problem to be solved urgently.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a composite welding method and device for silicon carbide reinforced aluminum matrix composite materials, so as to solve the problems existing in the above-mentioned prior art, and to efficiently weld silicon carbide reinforced aluminum matrix composite materials. high, and can reduce welding costs.

For achieving the above object, the present invention provides following scheme:

The invention provides a composite welding method for silicon carbide reinforced aluminum matrix composite material, comprising the following steps:

S1: The laser welding head emits a laser beam to perform laser welding on the workpiece to be welded along the welding direction, and the friction stir welding processing head is immediately behind the laser welding head, and the residual heat after the solidification of the laser welding molten pool is used to perform laser welding along the welding direction. The welding seam is subjected to friction stir welding, and the width of the stirring pool formed by the friction stir welding is larger than the width of the laser welding molten pool;

S2: After the laser welding head reaches the welding end point, stop emitting the laser beam, move the laser welding head out of the workpiece to be welded, and then place the friction stir welding head after the friction stir welding head reaches the welding end point. Remove the workpiece to be welded, and the welding is completed.

Preferably, the laser welding head adopts a planetary laser welding head, and the planetary laser welding head emits a main beam and a sub-beam rotating around the main beam, and performs laser welding on the workpiece to be welded through the main beam and the sub-beam.

Preferably, according to the thickness of the workpiece to be welded, the power of the main beam emitted by the planetary laser welding head and the power, frequency, amplitude and distance from the main beam of the auxiliary beam are controlled, and the edge of the planetary laser welding head is controlled. Said welding direction is laser welding at speed v.

Preferably, according to the power of the main beam emitted by the planetary system laser welding head, the welding speed and the power, frequency, amplitude of the auxiliary beam, the distance from the main beam and the size of the formed laser welding molten pool, determine the The distance between the friction stir welding processing head and the laser welding head is determined according to the size of the laser welding molten pool to determine the size of the stirring needle of the friction stir welding processing head, and the thickness of the workpiece to be welded is determined. Stirring depth and rotational speed of the stirring needle of the friction stir welding head.

Preferably, the friction stir welding processing head rotates at a high speed into the solidified weld at the tail of the laser welding molten pool, and performs friction stir welding at the same speed as the laser welding speed.

The present invention also provides a composite welding device for silicon carbide reinforced aluminum matrix composite materials, which adopts the above-mentioned composite welding method for silicon carbide reinforced aluminum matrix composite materials for welding, including a composite welding system, and the composite welding system includes CNC machining table, the laser welding head, the friction stir welding machining head and a controller, the CNC machining table is used for fixing the workpiece to be welded, and the controller controls the laser welding head according to the thickness of the workpiece to be welded The power of the emitted laser beam, the laser welding speed, the stirring depth and the rotation speed of the stirring needle of the friction stir welding processing head, and the controller can also control the friction stir welding speed.

Preferably, the laser welding head is a planetary laser welding head, and the planetary laser welding head can emit a main beam and a sub-beam rotating around the main beam when working, and perform laser welding on the workpiece to be welded through the main beam and the sub-beam.

Preferably, a reliability control system is also included, the reliability control system includes a displacement device and the controller, the controller is based on the power of the main beam, the welding speed and the auxiliary beam emitted by the planetary laser welding head. The power, frequency, amplitude, distance from the main beam and the size of the formed laser welding molten pool determine the distance between the friction stir welding processing head and the laser welding head, and adjust the distance between the The distance between the friction stir welding processing head and the laser welding head is adjusted and controlled.

The present invention has achieved the following technical effects with respect to the prior art:

The composite welding method and device for silicon carbide reinforced aluminum-based composite materials provided by the present invention use a laser welding head to perform laser welding on the workpiece to be welded, remove the silicon carbide reinforced phase in the material, and use the main beam in the planetary laser welding head. The welding penetration depth of the material is ensured. The stirring of the auxiliary beam not only improves the penetration ability of the main beam, but also controls the size of the molten pool by combining with the main beam to form a more suitable width and depth of the molten pool, which can be matched efficiently and controllably. The friction stir welding processing head realizes high-efficiency and high-quality composite welding of silicon carbide reinforced aluminum matrix composites. The friction stir welding processing head follows the laser welding head, and uses the residual heat after the solidification of the laser welding molten pool to perform friction stir welding on the weld after laser welding. The residual heat after the solidification of the laser welding molten pool reduces the resistance of the material and improves the friction stir welding. It reduces the wear of the stirring needle of the friction stir welding processing head and reduces the welding cost. During friction stir welding, the width of the stirring pool formed by the friction stir welding is larger than that of the laser welding molten pool, and the width of the stirring pool covers The post-laser welding seam, the heat-affected zone after laser welding and part of the base metal on the workpiece to be welded, the friction stir welding processing head under the extremely small frictional resistance, the lamellar brittle phase generated in the post-laser welding seam, After laser welding, the silicon carbide reinforcing phase in the heat-affected zone and part of the base metal on the workpiece to be welded is broken and evenly distributed, so that there is still silicon carbide reinforcing phase and dispersed hard and brittle phase in the final weld, which improves the weld. High strength and hardness, improve the comprehensive performance of the welded seam, and have high welding quality.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic structural diagram of a hybrid welding device provided by the present invention;

Fig. 2 is the longitudinal cross-sectional structural schematic diagram of the welding process of the present invention;

Fig. 3 is the top view structure schematic diagram of the welding process of the present invention;

Fig. 4 is the working flow chart of the welding process of the present invention;

In the picture: 1-laser welding head, 2-workpiece to be welded, 3-friction stir welding processing head, 4-laser welding pool, 5-laser welding seam, 6-stirring pool, 7-main beam, 8- Auxiliary beam, 9-controller, 10-displacement device, 11-laser welding keyhole, 12-welding seam, 13-laser welding heat affected zone.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The purpose of the present invention is to provide a composite welding method and device for silicon carbide reinforced aluminum matrix composite materials, so as to solve the problems existing in the prior art, and to efficiently weld silicon carbide reinforced aluminum matrix composite materials with high welding quality. , and can reduce welding costs.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1-FIG. 4, this embodiment provides a composite welding method for silicon carbide reinforced aluminum matrix composite material, including the following steps:

S1: The laser welding head 1 emits a laser beam to perform laser welding on the workpiece 2 to be welded along the welding direction, and the friction stir welding processing head 3 follows the laser welding head 1, and uses the residual heat after the solidification of the laser welding molten pool 4 to perform laser welding along the welding direction. The back seam 5 is subjected to friction stir welding, and the width L ₃ of the stirring pool 6 formed by the friction stir welding is greater than the width L _{4 of the laser welding molten pool 4} ;

S2: After the laser welding head 1 reaches the welding end point, stop emitting the laser beam, move the laser welding head 1 out of the workpiece 2 to be welded, and then move the friction stir welding head 3 out of the workpiece to be welded after the friction stir welding head 3 reaches the welding end point. Piece 2, welding is completed.

In this method, the melting and recrystallization of the material is realized by laser welding, and the secondary strengthening of the metallographic structure is realized by means of friction stir welding. The laser welding head 1 is used to carry out the laser welding operation on the workpiece to be welded 2, and the silicon carbide reinforcing phase in the material is removed. , the friction stir welding processing head 3 follows the laser welding head 1, and uses the waste heat after the solidification of the laser welding molten pool 4 to perform friction stir welding on the weld 5 after laser welding, and the residual heat after the solidification of the laser welding molten pool 4 reduces the resistance of the material , the efficiency of friction stir welding is improved, the wear of the stirring needle of the friction stir welding processing head ₃ is reduced, and the welding cost is reduced. The width L 4 of the welding molten pool 4 and the width L ₄ of the stirring pool 6 cover the post-laser welding seam 5 , the post-laser welding heat-affected zone 13 and part of the base metal on the workpiece to be welded Under the resistance, the flaky brittle phase generated in the weld 5 after laser welding, the heat affected zone 13 after laser welding and the silicon carbide reinforcing phase in the part of the base metal on the workpiece 2 to be welded are broken and evenly distributed, so that the final generation There is still a silicon carbide reinforcing phase and a dispersed hard and brittle phase in the welded seam 12, which improves the strength and hardness of the welded seam 12, improves the comprehensive performance of the welded seam after welding, and has higher welding quality.

In this embodiment, the laser welding head 1 adopts a planetary system laser welding head, and the planetary system laser welding head emits a main beam 7 and a sub-beam 8 that rotates around the main beam 7, and the workpiece 2 to be welded is lasered through the main beam 7 and the sub-beam 8 welding. During the laser welding process, the main beam 7 forms a laser welding keyhole 11 on the surface of the workpiece to be welded 2 to ensure the welding penetration depth, and the auxiliary beam 8 stirs the laser welding molten pool 4 to eliminate the pores in it, so as to ensure the quality of laser welding, according to the thickness of the plate In some cases, before welding, determine the position parameters of the distance between the sub-beam 8 and the main beam 7, the processing parameters such as the power of the main beam 7 and the sub-beam 8, and form the size of the laser welding molten pool 4 that matches the plate thickness and welding position. , and the size of the laser welding pool 4 will affect the temperature and range of the heat-affected zone 13 after laser welding, so as to avoid the silicon carbide reinforced phase in the heat-affected zone 13 after laser welding due to the excessively high temperature and excessive range of the heat-affected zone. If the secondary beam 8 is too close to the boundary of the laser welding molten pool 4, the size of the laser welding molten pool 4 will increase and the temperature of the heat-affected zone 13 after laser welding will increase, thereby forming a molten pool width more matching with the stirring pool 6. , to achieve high-efficiency composite welding.

In this embodiment, according to the thickness of the workpiece 2 to be welded, the power of the main beam 7 emitted by the planetary system laser welding head and the power, frequency, amplitude of the auxiliary beam 8 and the distance L ₂ from the main beam 7 are controlled, and the planetary system is controlled. The laser welding head performs laser welding at a speed v along the welding direction. Different thicknesses of workpieces 2 to be welded require different powers of the main beam 7 to ensure sufficient penetration, and the purpose of controlling the power of the sub-beam 8 is to ensure that the sub-beam 8 can penetrate the laser welding molten pool 4 a sufficient distance to achieve better penetration. The stirring effect, and the workpieces 2 to be welded with different thicknesses, the size of the laser welding molten pool 4 formed is also different, and the generated defects such as unfused and porosity also increase accordingly, and the auxiliary beam 8 needs to have sufficient power and amplitude (main and auxiliary beams). Spacing) and stirring frequency better stir the laser welding molten pool 4, promote the escape of pores, and promote the uniformity of the solute in the laser welding molten pool 4.

In this embodiment, according to the power of the main beam 7 emitted by the planetary laser welding head, the welding speed v and the power, frequency, amplitude of the auxiliary beam 8, the distance L ₂ from the main beam 7 and the formed laser welding molten pool 4 The distance L ₁ between the friction stir welding processing head 3 and the laser welding head 1 is determined, and the parameters of the corresponding laser welding head 1 are confirmed by the workpieces 2 with different thicknesses to be welded, and the size of the laser welding molten pool 4 formed by them is will also change, and thus, the position of the solidified tail of the laser welding molten pool 4 will also change, and the distance L ₁ between the friction stir welding processing head 3 and the laser welding head 1 needs to be adjusted to adapt to the solidification of the laser welding molten pool 4 According to the size of the laser welding molten pool 4, determine the size of the stirring needle of the friction stir welding processing head 3 to form a stirring pool 6 with a suitable width; determine the thickness of the friction stir welding processing head 3 according to the thickness of the workpiece 2 to be welded. The stirring depth H and rotation speed ω of the stirring needle, due to the change of the plate thickness of the workpiece 2 to be welded, need to adjust the length of the stirring needle of the friction stir welding processing head 3 to achieve sufficient stirring depth, and the thickness changes, After laser welding, the amount of brittle phase generated in the weld 5 also increases, and the size of the weld increases accordingly, so it is necessary to adjust the rotational speed of the friction stir welding processing head 3 to obtain a better stirring effect.

In this embodiment, the friction stir welding processing head 3 rotates at a high speed into the solidified weld at the tail of the laser welding molten pool 4, and performs friction stir welding at the same speed as the laser welding speed v, so as to be able to use the laser welding process in time. The residual heat of the welding seam 5 enables the friction stir welding processing head 3 to perform stirring processing with minimum resistance.

In some specific embodiments, the thickness of the workpiece 2 to be welded is 2mm-15mm; the power of the main beam 7 and the sub-beam 8 is 1500W-10KW; the distance L2 between the main beam 7 and the sub-beam ₈ is 0.5-3mm; The moving speed (welding speed v) of the planetary laser welding head is 0.5m/min～2m/min; the distance L1 between the friction stir welding head 3 and the laser welding head ₁ is 5mm～15mm, and the friction stir welding head 3. It is close to the tail of the laser welding molten pool 4 formed by the laser welding head 1, and is located at the post-laser welding seam 5 that has solidified but the temperature is slightly lower than the solidus line; the stirring depth H of the stirring needle of the friction stir welding processing head 3 The thickness of the workpiece to be welded 2 is equal, and the optimal range of the rotational speed ω of the stirring needle is 5000-15000 rpm; the width L3 of the semi-solid stirring pool 6 formed by the secondary welding of the friction stir welding processing head ₃ is greater than that of the laser welding molten pool. The width L ₄ of ₄ covers the weld 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 sheet-like and layered materials formed in the weld The brittle Al ₄ C ₃ crystal and the heat affected zone 13 after laser welding and the SiC reinforcing phase in the base metal on the workpiece to be welded 2 are broken and evenly distributed, so as to improve the strength and hardness of the weld 5 after laser welding, so as to improve the The overall performance of the weld.

Embodiment 2

As shown in FIG. 1 to FIG. 4 , this embodiment provides a hybrid welding device for silicon carbide reinforced aluminum matrix composite materials, which adopts the hybrid welding method for silicon carbide reinforced aluminum matrix composite materials described in Embodiment 1 for welding. , including a hybrid welding system. The hybrid welding system includes a CNC machining table, a laser welding head 1, a friction stir welding head 3 and a controller 9. The CNC machining table is used to fix the workpiece 2 to be welded. The thickness of the laser welding head 1 controls the power of the laser beam emitted by the laser welding head 1, the laser welding speed v, the stirring depth H and the rotation speed ω of the stirring needle of the friction stir welding processing head 3, and the controller 9 can also control the friction stir welding speed. Among them, the laser welding head 1 and the friction stir welding processing head 3 can be moved in a plane through a servo motor displacement platform.

In this embodiment, the laser welding head 1 is a planetary laser welding head, and the planetary laser welding head can emit a main beam 7 and a sub-beam 8 rotating around the main beam 7 when working, and the workpiece to be welded is passed through the main beam 7 and the sub-beam 8 2. Laser welding is carried out, the main beam 7 forms a laser welding keyhole 11 on the surface of the workpiece to be welded 2 to ensure the welding penetration, and the auxiliary beam 8 stirs the laser welding molten pool 4 to eliminate the pores in it to ensure the quality of laser welding.

In this embodiment, a reliability control system is also included. The reliability control system includes a displacement device 10 and a controller 9. The controller 9 is based on the power of the main beam 7, the welding speed v and the auxiliary beam 8 emitted by the planetary laser welding head. The power, frequency, amplitude, the distance L ₂ from the main beam 7 and the size of the formed laser welding molten pool 4 determine the distance L ₁ between the friction stir welding processing head 3 and the laser welding head 1 , and pass the displacement device 10 The distance L ₁ between the friction stir welding processing head 3 and the laser welding head 1 is adjusted and controlled. In order to obtain excellent welding quality in the workpieces 2 to be welded with different thicknesses and different processing positions, the power of the main beam 7 of different powers is used to ensure sufficient penetration, and the purpose of controlling the power of the auxiliary beam 8 is to ensure that the auxiliary beam 8 can The laser welding molten pool 4 is driven into a sufficient distance to achieve a better stirring effect, and the size of the laser welding molten pool 4 formed by the workpieces 2 to be welded with different thicknesses is also different, and the generated defects such as non-fusion and pores also increase accordingly. , the secondary beam 8 needs to have sufficient power, amplitude (main and secondary beam spacing), and better stirring frequency to stir the laser welding molten pool 4 to promote the escape of pores and promote the uniformity of the solute in the laser welding molten pool 4. Since the size of the laser welding molten pool 4 will change, the position of the tail of the laser welding molten pool 4 will change, and the size of the weld 5 will also change after laser welding. Parameters such as the distance L ₁ and the size of the stirring needle are adapted to the position where the tail of the laser welding molten pool 4 solidifies. The displacement device may be a servo motor displacement platform.

As shown in Figure 4, it is the working flow chart of the welding process of the present invention:

(1) Fix the workpiece 2 to be welded on the CNC machining table;

(2) Set the operation parameters of the hybrid welding device, including the power of the main beam 7, the auxiliary beam 8 and the distance between them, 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, and the friction stir processing head. 3 Parameters such as rotation speed, depth of stirring needle, and size of stirring pool;

(3) The system is powered on and the device is started;

(4) The planetary system laser welding head welds the workpiece 2 to be welded to form a weld 5 after laser welding;

(5) The friction stir welding processing head 3 works in the same direction, covering the welding seam 5 after laser welding, the heat-affected zone 13 after laser welding, and part of the base metal on the workpiece to be welded 2 for secondary optimization welding;

(6) The planetary laser welding head and the friction stir welding processing head 3 reach the welding end point successively, and the welding ends;

(7) The system is powered off and the device is turned off.

In the present invention, specific examples are used to illustrate the principles and implementations of the present invention, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention; There will be changes in the specific implementation manner and application scope of the idea of the invention. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims (8)

1. a composite welding method for silicon carbide reinforced aluminum matrix composite material, is characterized in that, comprises the following steps: S1: The laser welding head emits a laser beam to perform laser welding on the workpiece to be welded along the welding direction, and the friction stir welding processing head is immediately behind the laser welding head, and the residual heat after the solidification of the laser welding molten pool is used to perform laser welding along the welding direction. The welding seam is subjected to friction stir welding, and the width of the stirring pool formed by the friction stir welding is larger than the width of the laser welding molten pool; S2: After the laser welding head reaches the welding end point, stop emitting the laser beam, move the laser welding head out of the workpiece to be welded, and then place the friction stir welding head after the friction stir welding head reaches the welding end point. Remove the workpiece to be welded, and the welding is completed. 2. The composite welding method for silicon carbide reinforced aluminum-based composite materials according to claim 1, characterized in that: the laser welding head adopts a planetary laser welding head, and the planetary laser welding head emits a main beam and surrounds The auxiliary beam rotated by the main beam performs laser welding on the workpiece to be welded through the main beam and the auxiliary beam. 3. The composite welding method for silicon carbide reinforced aluminum-based composite material according to claim 2, characterized in that: according to the thickness of the workpiece to be welded, the power of the main beam and the auxiliary beam emitted by the planetary laser welding head are controlled The power, frequency, amplitude and distance from the main beam are controlled, and the planetary system laser welding head is controlled to perform laser welding at a speed v along the welding direction. 4. The hybrid welding method for silicon carbide reinforced aluminum matrix composite material according to claim 3, characterized in that: according to the power and welding speed of the main beam and the power and frequency of the auxiliary beam emitted by the planetary system laser welding head , the amplitude, the distance from the main beam and the size of the formed laser welding molten pool, determine the distance between the friction stir welding processing head and the laser welding head, according to the size of the laser welding molten pool, Determine the size of the stirring needle of the friction stir welding processing head, and determine the stirring depth and rotation speed of the stirring needle of the friction stir welding processing head according to the thickness of the workpiece to be welded. 5 . The hybrid welding method for silicon carbide reinforced aluminum matrix composite materials according to claim 1 , wherein the friction stir welding processing head enters the solidified weld at the tail of the laser welding molten pool by means of high-speed rotation. 6 . , and perform friction stir welding at the same speed as laser welding. 6. A composite welding device for silicon carbide reinforced aluminum matrix composite materials, using the composite welding method for silicon carbide reinforced aluminum matrix composite materials according to any one of claims 1 to 5 for welding, characterized in that: comprising: A hybrid welding system, the hybrid welding system includes a CNC machining table, the laser welding head, the friction stir welding machining head, and a controller, the CNC machining table is used to fix and install the workpiece to be welded, and the controller is based on the workpiece to be welded. The thickness of the welding workpiece controls the power of the laser beam emitted by the laser welding head, the laser welding speed, the stirring depth and rotation speed of the stirring needle of the friction stir welding processing head, and the controller can also control the friction stir welding speed. control. 7 . The hybrid welding device for silicon carbide reinforced aluminum-based composite materials according to claim 6 , wherein the laser welding head is a planetary laser welding head, and the planetary laser welding head can emit the main The beam and the sub-beam rotating around the main beam are used for laser welding of the workpiece to be welded through the main beam and the sub-beam. 8 . The hybrid welding device for silicon carbide reinforced aluminum matrix composite materials according to claim 7 , further comprising a reliability control system, the reliability control system comprising a displacement device and the controller, the The controller determines the friction stir according to the power of the main beam emitted by the planetary system laser welding head, the welding speed and the power, frequency, amplitude of the auxiliary beam, the distance from the main beam and the size of the formed laser welding molten pool The distance between the welding head and the laser welding head is adjusted and controlled by the displacement device.

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