Method for joining members and member connection structure

Abstract

The invention relates to a method for joining components, comprising the following steps: providing a first component, in particular an aluminum die-cast component, having a joining region for arranging and fixing a second component; producing an attachment layer at least locally along the joining region by means of a thermal spraying method, in particular cold gas spraying; fixing the second component on the attachment layer by means of joining by means of laser welding, in particular indirectly via energy input of the second component.

Description

Technical Field

[0001] The present invention relates to a method for joining components and a component connection structure, such as a component connection structure used in body / vehicle manufacturing. Background Technology

[0002] Steel / aluminum joining structures are used in vehicle body manufacturing to keep the weight of components, parts, and structures low. Common joining or connection methods in this case include riveting, especially (semi-hollow) stamping riveting, interlocking joints, (extruded) threaded joints, bonding, or combinations of these methods. A common feature of these methods is that they are not optimal in terms of cycle time and cost. Furthermore, manufacturing costs are often high in order to produce connections with sufficient rigidity and strength. Summary of the Invention

[0003] Therefore, the objective of this invention is to provide a method for joining components and a component connection structure that meets the highest mechanical requirements while optimizing cycle time and cost.

[0004] According to the present invention, a method for joining components includes the following steps:

[0005] - Provide a first component, particularly an aluminum die-cast component, having a mating area for arranging and securing a second component;

[0006] - By means of thermal spraying, especially cold gas spraying, an adhesion layer is formed at least locally along or on the joint area;

[0007] - By means of laser welding, the second component is fixed to the attachment layer indirectly via energy input from the second component, according to one embodiment.

[0008] Thermal spraying is a surface coating method. Here, additives, so-called spraying additives, are melted or fused inside or outside a spray burner and accelerated in a gas stream as spray particles. The component surface does not melt. This generates a small heat load. Layer formation occurs because the spray particles, upon impact with the component surface, are more or less flattened depending on the process and material, and adhesion is maintained primarily by mechanical clamping, thus constructing a layered spray / adhesion layer. Energy carriers used for melting or fusion of the spraying additives include: electric arcs (arc spraying), plasma beams (plasma spraying), fuel-oxygen-flame and / or fuel-oxygen-velocity flame (conventional flame spraying and velocity flame spraying), rapidly preheated gases (cold gas spraying), and laser beams (laser beam spraying).

[0009] Cold gas spraying has proven to be a particularly advantageous coating method. According to a preferred embodiment, the work is carried out using a gas jet with a temperature exceeding 800°C. The preferred maximum temperature is in the range of 1200°C, thus generally achieving a preferred temperature range between approximately 800°C or 850°C and approximately 1200°C. Tests have shown that temperatures in the range of approximately 1000°C are optimal for coating quality. Cold gas spraying advantageously enables the achievement of surfaces with optimized structures for downstream bonding processes.

[0010] According to a preferred embodiment, the surface of the adhesion layer has a Sa value that is preferably greater than 5 μm, particularly preferably between 5 and 35 μm, and especially preferably between 5 and 15 μm. The Sa value (arithmetic mean height) is the numerical value of the height difference of each point compared to the surface arithmetic mean.

[0011] Preferably, the Sdr value of the adhesive layer is at least 5%, particularly preferably in the range of 5-30%, and especially preferably in the range of about 12-20%. This parameter is the percentage of the additional area of ​​the defined region attributable to the surface properties of the adhesive layer compared to the absolutely flat defined region. The Sdr value of untreated (aluminum) die-cast components is, for example, in the range of about 2%.

[0012] Laser welding, or laser beam welding, is a welding method in which energy is supplied by a laser. Laser welding advantageously enables high welding speeds and narrow, elongated weld seam shapes. Furthermore, compared to other welding methods, thermal deformation is minimized. Equipment wear is also significantly reduced compared to other welding methods because, for example, there is no need for further machining or electrode replacement.

[0013] According to a preferred embodiment, the first component is a cast component, sheet metal, and / or profile, preferably made of a light metal such as aluminum. Preferred cast components (but also including the second component) are particularly structural components such as spring supports, longitudinal beams, or cast joints (such as the A-pillar of a motor vehicle). Furthermore, cast components of this type (but also including the second component) can be the complete frame, rear structure, or front structure of a motor vehicle. The first and / or second components can be the housing of an electrical energy storage device, particularly a high-voltage storage device housing, preferably, especially the upper or lower housing component of such a housing.

[0014] According to a preferred embodiment, the second component is a steel component. Advantageously, applying an adhesion layer allows for the joining of different kinds or different materials. In particular, this enables, for example, welded connections between aluminum and steel components at low cost. Steel or iron / steel-based materials are advantageously used as the material for the adhesion layer. According to one embodiment, austenitic (stainless) steel and, more preferably, ferritic (stainless) steel are used as the material for the adhesion layer. Currently, it is particularly preferred that cast components made of aluminum, especially die-cast aluminum hooks, are provided with an adhesion layer.

[0015] Advantageously, energy input is carried out indirectly via the second component according to one embodiment. This advantageously largely avoids heat input into the aluminum material, or heat input into the first component. Therefore, it is advantageous to prevent the formation of intermetallic phases in the first component.

[0016] According to one implementation, the method includes the following steps:

[0017] - Control the energy input during welding so that the first component does not melt or molten.

[0018] According to a preferred embodiment, laser welding is performed in a robot-assisted manner. Preferably, at least one appropriately designed welding robot is used. Welding parameters can be adapted as needed via a robot control device.

[0019] According to a preferred embodiment, the method includes the following steps:

[0020] - Weld through the second component.

[0021] According to one embodiment, welding is performed in such a way that it is welded through the second member into or onto the adhesion layer.

[0022] According to one implementation, the method includes the following steps:

[0023] - Weld along the second component.

[0024] A fillet weld is formed here appropriately.

[0025] It should be noted that currently, not only welding with additives can be used, but welding without additives can also be used.

[0026] In principle, laser welding offers a very high degree of freedom in weld shape. The weld shape can be freely designed within certain limits. According to preferred embodiments, the weld can be constructed as circular, horseshoe-shaped, linear, and / or wavy.

[0027] Fixing may be achieved by means of spot welding and / or seam welding.

[0028] According to one embodiment, a stepped joint is used, for example. Alternatively, spot welding can be performed. According to a preferred embodiment, the weld points have a spacing of approximately 15 to 25 mm, particularly approximately 20 mm, along the joint area.

[0029] Compared to traditional resistance spot welding, laser welding offers the following advantages: the thickness of the weld nugget can be significantly smaller in laser welding. For example, the weld nugget that appears in resistance spot welding requires a thicker weld nugget than in laser welding. Furthermore, the spacing between weld spots can be designed to be more variable because—for example, unlike resistance spot welding—there is no risk of current shunting.

[0030] According to a preferred embodiment, the adhesion layer has a maximum thickness of 1500 μm. A preferred thickness is in the range of 100 μm to 1000 μm, and particularly advantageously smaller than the aforementioned upper limit, for example, 900 μm, 800 μm, and less. These values ​​are particularly suitable for adhesion layers having a thickness that is at least substantially constant along the bonding region.

[0031] According to a preferred embodiment, the width of the adhesive layer measured transversely to the bonding area is in the range of 5 to 40 mm, particularly preferably about 10 to 30 mm. The length of the region where the layer thickness increases is preferably in the range of 5 to 40 mm, particularly preferably about 10 to 30 mm. The width of the bonding area typically corresponds at least approximately to the width of the adhesive layer.

[0032] Suitably, the components are positioned or at least in contact in the mating area via an adhesive layer. Advantageously, the adhesive layer can be constructed at least partially or sectionally such that the two components are fixed relative to each other in a predetermined position. For this purpose, one or more small stops or retaining protrusions can be constructed on the adhesive layer, which are designed to position the components in a form-locking manner.

[0033] Suitablely, the two components are brought into partial or preferably complete contact indirectly via the adhesion layer prior to welding. In very large components, slight dimensional deviations, if possible, in the first (and / or second) component can be compensated for by locally adapting the thickness of the adhesion layer, especially when the component has warpage, for example.

[0034] According to one implementation, the method includes the following steps:

[0035] - The components are brought into contact by introducing force from one or both sides into the joint area or especially into the adhesive layer.

[0036] According to a preferred embodiment, force is directly introduced by the laser welding robot. Preferably, the force is introduced directly before and / or during the energy input for welding. According to one embodiment, the welding apparatus includes a C-shaped arc that allows force to be introduced onto or into the joint area from both sides. Alternatively, force is introduced only from one side. From the other side, either no further support is needed because the rigidity of the components themselves, especially the first component, is sufficient, or support is provided by appropriately arranged devices.

[0037] The welding apparatus suitably includes stop elements configured and designed for force application and devices for creating the welded joint structure. The current configuration has proven advantageous, in which the devices for creating the welded joint structure are positioned between two stop elements. Therefore, the areas to be welded can reliably contact. Force application is initially performed from one side. Alternatively, the welding apparatus can also be constructed as a C-shaped arc, thereby enabling force application from both sides.

[0038] According to one implementation, the method includes the following steps:

[0039] - Remote laser welding is performed under optical or tactile seam guidance.

[0040] In remote or scanning welding, the laser beam is positioned by a deflector. Preferably, an optical or tactile system is used for seam guidance.

[0041] According to one embodiment, the adhesion layer has a different thickness along the bonding region. In other words, the thickness of the adhesion layer varies along the bonding region. Advantageously, the adhesion layer has contoured or structured portions comprising a series of repeating regions with higher and lower layer thicknesses. According to one embodiment, the adhesion layer may be constructed discontinuously, in other words, only segmentally, along the bonding region.

[0042] Suitablely, the method includes the following steps:

[0043] - Welding is performed in areas where the layer thickness increases or only in areas where an adhesion layer has been constructed.

[0044] According to one embodiment, the adhesion layer is designed along the contoured or structured portion of the joint area such that the thickness of the adhesion layer in the area of ​​the welding point or weld is in the range of about 300 μm to 1500 μm, particularly preferably in the range of about 350 μm to 1200 μm, and especially preferably in the range of about 400 μm to 800 μm.

[0045] The regions where the layer thickness increases are now referred to as peaks, and the regions where the layer thickness decreases (or where there is no layer thickness) are referred to as troughs.

[0046] Preferably, the adhesion layer is spaced at a preferred regular interval along the bonding area and alternately has crests and troughs. According to a preferred embodiment, the spacing of the crests about their center points—especially regularly—is in the range of about 10 to 70 mm, particularly preferably in the range of about 15 to 60 mm. According to a preferred embodiment, the spacing is about 20 mm. This spacing has proven advantageous in achieving mechanical specifications in vehicle body and vehicle manufacturing.

[0047] According to a preferred embodiment, the height of the crest relative to the height of the trough is in the range of about 1.05 to 2.7, particularly preferably in the range of about 1.1 to 1.9, and even more particularly preferably in the range of about 1.3 to 1.6, especially in the range of about 1.4 to 1.45.

[0048] According to a preferred embodiment, the contoured or structured portions of the adhesion layer are achieved by adjusting the feed rate during coating. To this end, the feed rate is reduced to create areas with increased layer thickness, and increased to create areas with decreased layer thickness.

[0049] To create the adhesion layer, one embodiment utilizes a circular nozzle. Alternatively, a nozzle geometry with a rectangular cross-section is used. The nozzle is oriented such that the long side of the rectangle is oriented transversely to the feed direction. The width of the rectangle determines the width of the adhesion layer. The advantage of this method is that it does not require operation on multiple tracks as in the case of a circular nozzle. In both cases, the adhesion layer can comprise multiple layers or coatings.

[0050] In one embodiment, the adhesion layer is generated in a single upward movement. Alternatively, multiple upward movements are required. Therefore, the adhesion layer can be constructed in layers or coats in the thickness direction, if possible.

[0051] In principle, the adhesion layer may include multiple layers or coatings. These layers / coatings may be applied or created during multiple overlay movements. These layers / coatings may include different materials / materials or be composed of different materials / materials.

[0052] According to one implementation, the method includes the following steps:

[0053] - Move in a spiral or circular motion through the (abfahren) joint area to create an adhesion layer.

[0054] Advantageously, a circular motion is superimposed on the feed motion of the coating tool along the joint area. This produces a helical motion pattern. It has been shown that this technique, combined with thermal coating / spraying methods, and currently especially with cold gas spraying, can provide very good quality results while offering high efficiency and maximum economy. A circular nozzle is advantageously used here.

[0055] As already mentioned, a planar nozzle can also be used according to one embodiment. The planar nozzle offers the advantage that it is not necessary to arrange multiple tracks side-by-side to create a bonding area of ​​a certain width. Therefore, the movement pattern is significantly simpler. When using a circular nozzle, instead of a spiral movement, the adhesion layer can be created by moving in a meandering manner through the bonding area. This movement through the bonding area continues until a point (inflection point) is reached, so that a new track can then be set next to the already created track, etc.

[0056] It should be noted that, according to one embodiment, the adhesive layer has a different thickness transverse to the bonding area. According to one embodiment, the adhesive layer has a (slightly) raised convex design in cross-section. According to one embodiment, the adhesive layer has a thickened, flat or substantially flat intermediate region in cross-section, which slopes down laterally towards both sides of the bonding area. The above-described geometry can be achieved, in particular, by a helical movement. Along the bonding area, the thickness / cross-section of the adhesive layer is preferably configured to be constant. Preferably, welding is performed in the middle or approximately in the middle of the cross-section. Edges or edge regions may (but do not necessarily) be used to coat the adhesive on one or both sides.

[0057] According to one implementation, the method includes the following steps:

[0058] - An adhesion layer is created by means of thermal spraying, especially cold gas spraying;

[0059] - The functional layer is preferably applied to the adhesion layer by means of thermal spraying, and especially by means of cold gas spraying.

[0060] The functional layer is preferably constructed as a corrosion-resistant layer. Zinc or a zinc compound is preferably used as the material. The functional layer is suitably a zinc layer.

[0061] Alternatively, the coating is used for corrosion protection or the first component itself is oiled.

[0062] According to one embodiment, an intermediate layer is constructed between the adhesion layer and the first component. The intermediate layer can also be produced by thermal spraying, particularly cold gas spraying. Preferably, the intermediate layer is designed to prevent contact corrosion between the first component and the adhesion layer. Preferably, iron (Fe) propagation into the aluminum (Al) is prevented, thereby avoiding undesirable brittle iron-aluminum phases.

[0063] According to one implementation, the method includes the following steps:

[0064] - The second component is additionally secured to the attachment layer and / or the joint area by means of adhesive bonding.

[0065] According to one embodiment, a one-component adhesive or a two-component adhesive is used. Structural adhesives are preferred, in particular. One-component adhesives require heat to cure. One-component adhesives do not cure after welding. Instead, they can cure, for example, in a subsequent painting process. Two-component adhesives cure in air. The flexibility in terms of the materials used, especially, allows for a high degree of freedom in component design.

[0066] According to one implementation, the method includes the following steps:

[0067] - Provide a first component with a surface-treated section;

[0068] - By generating an adhesion layer and locally removing the surface treatment portion during the generation of the adhesion layer.

[0069] The surface treatment section of this type can be a KTL layer (cathode immersion coating), a passivation section, or, for example, a laser-cleaned or laser-activated section on the surface of the component. It has been shown that, in particular, the above-described type of "coating" can be removed or removed by thermal spraying. In other words, no type of surface treatment section "interferes" with the application of the adhesion layer, wherein, especially in cold gas spraying, the high gas temperature of the gas jet, preferably 800°C, and particularly preferably about 1000°C, also plays a role.

[0070] Alternatively, components that are initially at least partially exposed or uncoated are joined and then subsequently supplied to a coating method, such as one used for corrosion protection. According to one embodiment, the method includes the following steps:

[0071] - After joining the components, the surface treatment is applied to the first component.

[0072] According to a preferred embodiment, the method includes the following steps:

[0073] - Adhesion is performed in areas where the thickness of the adhesive layer decreases.

[0074] The joint area is currently an area in which two components overlap. Accordingly, the joint area can also be considered a flange, a flange segment, or a flange region. According to one embodiment, the joint area is a surface with a certain width and length. An adhesive layer is suitably applied to this surface, either entirely or only partially. Alternatively and more preferably, the joint area has an elongated extension, i.e., significantly longer than its width. The adhesive layer may extend around or along the entire joint area. Alternatively, the adhesive layer may be applied only to certain areas or portions of the joint area.

[0075] If only some areas of the bonding region have an adhesive layer, then this means that the adhesive can also be arranged so that it directly connects the first and second components.

[0076] It is particularly preferred that the adhesive be coated in such a way that it also contacts the adhesion layer, i.e., in particular, to provide a bond between the adhesion layer and the second component. This is especially advantageous because the adhesion layer, by process determination, has a roughness optimized for adhesive adhesion (see the roughness characteristic values ​​already mentioned). The roughness, or the resulting surface increase, provides the best preconditions for the use of the adhesive.

[0077] An adhesive layer with crests and troughs is particularly advantageous for the use of adhesives because the troughs can be used in an optimized manner as adhesive reservoirs. Therefore, the optimal thickness of the adhesive layer in these trough regions can be advantageously adjusted by varying the thickness of the adhesive layer in those regions. According to a preferred embodiment, the thickness of the adhesive layer is approximately 200 μm to 400 μm, particularly approximately 300 μm. This can be advantageously achieved through the ratio of crest to trough heights.

[0078] According to one implementation, the method includes the following steps:

[0079] - Apply adhesive before or after welding.

[0080] According to one embodiment, the adhesive is applied in dots onto the crests. Advantageously, a suitable amount of adhesive is applied to the crests. Preferably, the adhesive application is linear and continuous along the adhesion layer. Here, it is preferable to slow down the movement in the trough areas, as more adhesive is suitably reserved there.

[0081] Looking along the joint area, according to one embodiment, the adhesive joint is constructed such that it completely seals the joint area to one side (K1 adhesive joint). Alternatively, one or more adhesive joints are arranged such that the joint area is completely sealed to both sides (K2 adhesive joint). Suitably or according to a preferred embodiment, the adhesive layer is completely embedded in the adhesive, in other words, encapsulated (sealed) in or into the adhesive.

[0082] The present invention also relates to a component connection structure comprising—particularly made of aluminum—a first component and—particularly made of steel—a second component, the first and second components being fixed to each other along a joint area, the first component having at least partially an adhesion layer in the joint area, the adhesion layer being produced by means of thermal spraying, and the second component being fixed to the adhesion layer by means of laser welding. Advantageously, the first component made of aluminum is provided with a steel coating / adhesion layer by means of spraying, so as to be connected to the second component, which is suitably made of steel, by means of laser welding in a subsequent process. Particularly preferably, the first component is an aluminum die-cast component. The aluminum die-cast component may have a surface treatment section, such as a KTL coating, a passivation section, or a laser activation section / laser cleaning section, etc.

[0083] According to a preferred embodiment, the adhesion layer extends along—preferably elongated—the joining region and has contoured portions, structured portions, or corrugations along the joining region, see the above-described crests / troughs, where preferably at least one weld point or weld is formed respectively. Preferably, the adhesion layer has alternating crests and troughs along the joining region, with one or more weld points provided at the crests. Additionally or alternatively, welds, especially interrupted joints, may also be formed at the crests. Laser welding advantageously allows for free joint design in this regard.

[0084] Furthermore, the advantages and features mentioned in the method are similarly and correspondingly applicable to component connection structures, and vice versa. Attached Figure Description

[0085] Other advantages and features will become apparent from the following description of embodiments of the method or component connection structure with reference to the accompanying drawings.

[0086] In the attached image:

[0087] Figure 1 A schematic diagram illustrating one embodiment of the component connection structure;

[0088] Figure 2 Another schematic diagram showing one embodiment of the component connection structure;

[0089] Figure 3 Another schematic diagram showing one embodiment of the component connection structure;

[0090] Figure 4 This illustrates another schematic embodiment of the component connection structure;

[0091] Figure 5 As shown in Figure 4 A cross-sectional view of the joint area is shown in a simplified manner.

[0092] Figure 6 An embodiment of a method for generating an adhesion layer is shown. Detailed Implementation

[0093] Figure 1 A first component 10 is schematically shown, on which an adhesion layer 30 is provided—preferably by means of cold gas spraying. A second component 20 (which, according to a preferred embodiment, is a steel component) is fixed to the adhesion layer 30 by means of laser welding (see welded joint structure 50). Reference numeral 20 schematically indicates the direction of the energy beam or energy input used to produce the weld or welded joint structure 50. The two components 10 and 20 overlap along the joint area 26. Herein, energy introduction is performed indirectly via the second component 20. Suitably, the laser welding method is directed such that the first component 10 does not melt and / or molten. In particular, laser welding can achieve a very protective welding method by minimizing energy input to the first component 10. For orientation, a longitudinal direction L is schematically shown, along which the joint area 26 or adhesion layer 30 extends. Figures 2 to 4 Other possible design schemes for this connection structure are roughly shown in the figure.

[0094] Figure 2 A welded connection structure 50, essentially constructed as a fillet weld, is shown. For example, welding is performed along the second member 20. It should be mentioned in principle that, currently, it is preferred to perform not only spot welding but also seam welding. Laser welding offers the particular advantage that the member connection structure or joint area only needs to be accessible from one side. Suitably, members 10 and 20 are brought into contact with each other before welding, which can be achieved not only by applying force from one side but also by applying force from both sides.

[0095] Figure 3 Another possible design for the component connection structure is shown, in which the welded connection structure is located on the side. For example... Figures 1 to 3 The design scheme of the welded connection structure 50 shown can be arbitrarily combined within the manufacturing range of component connection structures.

[0096] Figure 4 It shows that it is basically composed of Figure 1 In the known simplified diagram, the adhesion layer 30 is embedded, or in other words encapsulated, by the adhesive 40 on its sides. This not only improves the strength of the connection structure but also enhances corrosion resistance. In particular, the adhesive layer 40 protects the adhesion layer 30 from corrosion.

[0097] Figure 5 Another embodiment of the component connection structure is shown, wherein a cross-sectional view is schematically shown along the joint region 26, as it is shown through... Figure 4The cross-section is shown in the diagram. It can be seen that the adhesion layer 30 has different thickness regions, see crest 32 and trough 34. In other words, the adhesion layer 30 has different thicknesses along the longitudinal direction L. Suitably, the adhesion layer 30 is welded to the second member 20 in the crest 32 region. The welded joint structure 50 is schematically shown as an interrupted joint. An adhesive 40 is suitably provided therebetween, i.e., in the trough 34, which advantageously further reinforces the member joint structure. The use of adhesive 40 is particularly advantageous in this case because the adhesion layer 30 has a roughness optimized precisely for the adhesion of the adhesive 40. Furthermore, the thickness of the adhesive layer can be precisely adjusted to an optimized dimension by means of the height of the trough 34, or the height of the intermediate space. This interrupted weld can be achieved using suitable laser welding tools, especially laser welding clamps (C-shaped arcs), which can simultaneously apply force to both members 10 and 20. Laser spot welding is also currently advantageous. At least one laser welding point is appropriately arranged or set in the wave crest 32 region.

[0098] Figure 6 The movement is shown as a meandering motion through the joint area 26 to create the adhesion layer. The starting point is marked by a cross, and the direction of movement of the circular nozzle 61 is roughly indicated by arrow B.

[0099] An adhesion layer can also be generated by means of a flat nozzle 62, as schematically shown in the second figure. In this case, the trajectory only needs to be moved once.

[0100] The current, especially helical / circular, motion direction has proven advantageous, as schematically shown in the last figure. A circular nozzle 61 is also advantageously used here. The motion pattern is more complex, but it allows for lower processing times and eliminates the need for masking. Furthermore, unlike when using a flat nozzle, the width of the adhesion layer can be adapted as needed.

[0101] List of reference numerals

[0102] 10 First Component

[0103] 20 Second Component

[0104] 26 joint areas

[0105] 30 adhesion layer

[0106] 32 peaks, high plateaus

[0107] 34 troughs

[0108] 40 adhesive layers

[0109] 50 Welded Connection Structure

[0110] 60 energy beam / laser beam

[0111] 61 Circular Nozzle

[0112] 62 flat nozzle

[0113] B direction of motion

[0114] L longitudinal direction

Claims

1. A method for joining components, the method comprising the following steps: - Provide a first component (10) having a joint area (26) for arranging and fixing the second component (20); - By means of thermal spraying, an adhesion layer (30) is formed at least locally along the joint area (26) or on the joint area; - The second component (20) is fixed to the attachment layer (30) by means of laser welding. The thickness of the adhesion layer (30) varies along the bonding region (26). The method further includes the following steps: - Welding is performed in areas where the layer thickness increases. - Additionally, the second component (20) is secured to the attachment layer (30) and / or the joint area (26) by means of adhesive bonding. - Bonding is performed in areas where the layer thickness decreases.

2. The method according to claim 1, wherein, The method includes the following steps: - Control the energy input during welding so that the first component (10) does not melt or molten.

3. The method according to claim 1 or 2, wherein, The method includes the following steps: - Weld through the second component (20).

4. The method according to claim 1 or 2, wherein, The method includes the following steps: - Weld along the second component (20).

5. The method according to claim 1 or 2, wherein, The method includes the following steps: - Move in a spiral motion through the bonding area (26) to create an adhesion layer (30).

6. The method according to claim 1 or 2, wherein, The method includes the following steps: - Secured by spot welding and / or seam welding.

7. The method according to claim 1 or 2, wherein, The first component (10) and the second component (20) are positioned in the joint area (26) by the attachment layer (30).

8. The method according to claim 1 or 2, wherein, The method includes the following steps: - The first member (10) and the second member (20) are brought into contact by introducing force into the joint area (26) from one or both sides.

9. The method according to claim 1 or 2, wherein, The method includes the following steps: - Remote laser welding guided by optical or tactile seams.

10. The method according to claim 1 or 2, wherein, The method includes the following steps: - Apply adhesive (40) before or after welding.

11. The method according to claim 1, wherein, The first component (10) is an aluminum die-cast component.

12. The method according to claim 1, wherein, The method includes the following steps: - By means of cold gas spraying, an adhesion layer (30) is formed at least locally along the joint area (26) or on the joint area.

13. A component connection structure comprising a first component (10) and a second component (20), the first component and the second component being fixed to each other along a joint area (26), the first component (10) having at least partially an adhesion layer (30) in the joint area (26), the adhesion layer being produced by means of thermal spraying, the second component (20) being fixed to the adhesion layer (30) by means of laser welding, and the second component (20) being additionally fixed to the adhesion layer (30) and / or the joint area (26) by means of adhesive bonding, wherein, The thickness of the adhesion layer (30) varies along the bonding region (26), and the second member (20) is welded in the region where the layer thickness increases and bonded in the region where the layer thickness decreases.

14. The component connection structure according to claim 13, wherein, The first component (10) is made of aluminum.

15. The component connection structure according to claim 13, wherein, The second component (20) is made of steel.

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