Local Modification Method of Aluminum Profiles by Friction Stir Welding

Abstract

The invention relates to a method for localized modification of aluminum extrusion profiles by friction stir welding, thereby increasing collision resistance, energy absorption capacity, and ease of mechanical processing.

Description

1 TARIFF Regional Modification of Aluminum Profiles by Friction Stir Welding Method TECHNICAL FIELD The invention relates to the friction stir welding method of aluminum extrusion profiles. Improving energy absorption performance through regional modification of the profile. Control of folding direction, improvement of shaping ability, mechanical processing. to improve its capabilities and to improve its machining capabilities It is related to the method. PREVIOUS TECHNIQUE 10 Aluminum extrusion profiles have a wide range of applications in the automotive industry. These profiles have the capacity to absorb energy during a collision, thus improving vehicle safety. This is of critical importance. Profiles produced by the extrusion method are generally 6xxx. and consists of 7xxx series aluminum alloys. These profiles are used in the vehicle frame. From motor carriers to battery carriers to collision systems, there are many 15 It is used in practice. In current techniques, the aluminum billet is high during aluminum extrusion. After being shaped at various temperatures, the produced profiles undergo cooling, stretching, and artificial processes. Aging processes are applied. However, in these processes, the mechanical properties of the profiles are compromised. There are limitations to the processes undertaken to improve these features. Profiles 20 Processes carried out to increase mechanical strength are generally applied to the profile. It does not offer a regional solution. As a result, profiles during collision The desired performance level is not being achieved. In conclusion, current techniques allow for the reduction of post-collision energy in aluminum profiles. 25 regional modification methods that can optimize damping performance It is lacking. All the problems mentioned above make innovation in the relevant field imperative. has brought. 2 THE PURPOSE OF THE INVENTION The present invention aims to eliminate the aforementioned problems and provide technical solutions in the relevant field. It aims to create an innovation. The main purpose of the invention is to produce aluminum extrusion profiles by friction stir welding. By enabling regional modification, the energy absorption capacity after a collision is increased by 5. The goal is to develop a method that optimizes [the process]. Another objective of the invention is to enable controlled operation of aluminum profiles under different collision conditions. The goal is to ensure it folds in that way. Another purpose of the invention is to achieve the desired mechanical properties in specific areas of aluminum profiles. The goal is to improve its ability to take shape by providing these properties. 10 Another aim of the invention is to achieve regional welding using friction stir welding. The goal of post-optimization profile is to improve machining quality. Another purpose of the invention is to achieve regional welding using friction stir welding. Mechanical processes such as riveting and bushing insertion are applied to the profile after optimization. The goal is to improve process quality. 15 A BRIEF DESCRIPTION OF THE INVENTION All the purposes mentioned above and those that will emerge from the detailed explanation below. The present invention aims to achieve friction mixing of aluminum profiles (A). regional modification of the internal structure and mechanical properties by means of its source a 20 that improves energy absorption performance during a collision by optimizing it. This is the method. Accordingly, in order: a) Heating the aluminum billet to form the desired profile shape. passing through an extrusion die, b) To improve the mechanical properties of the profile obtained in process step a natural aging or artificial aging or after solution treatment 25 subjected to artificial aging process, c) Friction mixing for creating folding elements on the profile The creation of ductile regions through its source, 3 d) suitable for cold forming, machining and mechanical processing. modification elements by friction stir welding in regions creation, e) profiles with controlled folding and processing properties as the final product production, 5 It includes. A preferred configuration of the invention, • It absorbs collision energy by folding in a controlled manner during a collision, and Short profile to maintain the structural integrity of the vehicle. • short 10 to absorb energy during collision and provide controlled folding The folding element connected on the profile, • It has a rigid structure to limit deformation after impact and to ensure the safety of the vehicle's passengers. long profile to increase, • Improving machining quality, improving formability, bushing insertion, 15 on the long profile to increase screw and rivet resistance. the modified element that is connected, • Regional structure that optimizes the geometric structure and strength of the aluminum profile. as a member of the federation, It is characterized by its inclusion. Another preferred configuration of the invention is an aluminum-silicon-magnesium alloy or 20 It is made of aluminum-zinc alloy material. BRIEF DESCRIPTION OF THE FIGURES Figure 1 shows a perspective view of the aluminum profile. Figure 2 shows the front perspective of the connecting folding element on the aluminum profile. A cross-section of its appearance is shown. 25 Figure 3 shows a front perspective view of the aluminum profile. 4 Figure 4 shows the front perspective of the modifier element connected to the aluminum profile. Its appearance is given. The drawings do not necessarily need to be scaled and are useful for understanding the invention. Unnecessary details may have been omitted. Furthermore, at least the major Elements that are identical to a certain extent, or at least have substantially identical functions, are the same 5 It is indicated by a number. EXPLANATION OF REFERENCE NUMBERS IN THE FIGURES A. Aluminum profile 1. Short profile 2. Folding element 10 3. Modifying element 4. Feder 5. Long profile DETAILED DESCRIPTION OF THE INVENTION In this detailed description, the subject of the invention is Aluminum Profiles (A) Friction Stirring 15 The Regional Modification Method with its Source is not only for a better understanding of the subject. This is explained with examples that will not create any limiting effect. The invention concerns friction stir welding (FSW) of aluminum extrusion profiles. regional modification and energy dissipation during collision using this method It relates to a method that helps improve performance. 20 Traditional aluminum extrusion profile production methods generally result in homogeneous... It is limited to producing profiles with mechanical properties. During the extrusion process and Afterwards, no regional intervention should be made to the profiles, or the profiles should not be affected by collisions or... This makes it difficult for it to achieve the desired performance in cold forming processes. Especially its energy absorption capability during a collision and its suitability for mechanical processing. 25 In this respect, the current methods appear to be inadequate. The invention involves extruding specific aluminum profiles using the friction stir welding method. by creating ductile areas and modified structures in these regions, energy dissipation It improves its ability to control folding and shaping. It improves its capabilities, enhances machining quality, and performs tasks such as riveting. It improves mechanical processing capability. Friction mixing of aluminum profiles (A) Obtaining the aforementioned outputs through regional modification of the source. This is done through the following steps; Step A: Aluminum billet preparation: 5 Aluminum billets are heated and extruded from a die to form the desired profile shape. Longitudinal profiles with different cross-sectional structures are formed using the aluminum extrusion method. It is manufactured in such a way as to have it. The short profile (1) and long profile (5) definitions are intended to better describe the function of the invention. These are the nomenclatures used. Short profile (1) and long profile (5) are a dimensional limitation. 10 It does not specify and refers to the profile used in an aluminum-containing area of ​​the vehicle. Step B: Heat treatment application: The profile obtained as a result of the extrusion process is heated in an artificial aging oven. This process, to stabilize the mechanical properties of the profile and to give it a more durable structure It is done. 15 In the alternative design of the invention, aluminum profiles are used after natural aging. such as aluminum profiles, after the dissolution (solution treatment) process is applied, Artificial aging at different temperatures and durations using any cooling method. It can be subjected to this process. Step C: Creating folding elements on the profile: 20 Friction stir welding creates ductile areas in specific regions of aluminum profiles. It is used to create. This process, which is carried out with robotic or machine-type devices, Folding elements that provide energy absorption capability in collision zones (2) It creates modifying elements (3) that facilitate mechanical and machining operations. Using the friction stir welding method, the layer 25 is applied to the collision zones of the profiles. Elements (2) are formed. The folding element (2) absorbs the energy during the collision. and is designed to allow the profile to fold in a controlled manner. Friction This is formed in certain areas of the aluminum profile (A) by the stir welding method. These elements increase the ductility of the material, preventing folding after impact. It improves the energy absorption performance. In this way, the aluminum profile (A) has a controlled 30 6 By exhibiting deformation, it absorbs the impact effects that may occur during a collision. It becomes possible to fold it as desired, increasing its safety. Step D: Modification of Areas Suitable for Mechanical Machining: Friction mixing on the short profile (1) or long profile (5) used on the vehicle. Ductile regions are created with the source. These modifying elements (3) are shown in Figure 5 of the profiles. Improves the ability to take, improves the machining ability. Modifying element (3), machining the machinability of the profile in processes such as manufacturing, bushing insertion, screwing and riveting, and Improves the durability of connection points. Enhances the internal structure and mechanics of the material. By altering its properties, it enables the creation of a more ductile structure and during the production process. It delivers superior performance for applications requiring precision. Thus, aluminum 10 Longer service life and reliability by optimizing the general mechanical properties of profiles (A). It provides a structure. The short profile (1) or long profile (5) used on the vehicle frame is used both at the front and It can also be used in rear areas. It absorbs energy or deformation during a collision. It serves a limiting function. By absorbing energy in a controlled manner in the rear region, it reduces the risk of collision. 15 While reducing its impact, it limits deformation by providing impact resistance in the front section, and It enhances the safety of the passenger cabin. The short profile (1) and long profile (5) definitions are intended to better describe the function of the invention. These are the nomenclatures used. Short profile (1) and long profile (5) are a dimensional limitation. It does not specify and refers to the profile used in any part of the vehicle. Aluminum 20 Profiles (A) are used as a ductile or rigid structure according to the design expectations of the vehicle. Aluminum profiles (A) regional structure optimizing geometric structure and strength It includes a feder (4) as an element. The rigidity or ductility of the mentioned feder (4) It is designed to increase [intensity]. Step E: Obtaining the Final Product: 25 The above process steps result in controlled folding and high energy damping. It has performance, formability and suitability for mechanical processing characteristics. aluminum profiles (A) are obtained. Materials and APPLICATION Thickness Bending Angle Average Angle of Tilt mm ° ° 6xxx extrusion plate base metal 2.8 36 33.5 7 6xxx extrusion plate base metal 2.8 31 Friction mixing after the source (6xxx extrusion plate + 6xxx extrusion plate) 2.8 136 117.5 Friction mixing after the source (6xxx extrusion plate + 6xxx extrusion plate) 2.899 Table 1 The results presented in Table 1 show that a type 6xxx (Aluminum-Silicon-Magnesium) alloy The extruded plates are joined by friction stir welding, then 3-point After bending testing, it was compared with the base metal. The same heat treatment was applied as to the base metal. A single type of 6xxx extrusion plate, which has entered the cycle, was used. This 6xxx extrusion 5 The plates are joined using butt welding. According to the test results, aluminum 6xxx series subjected to friction stir welding. Extruded plates exhibit significantly higher bending performance compared to the base metal. It has shown that while the average bending angle of the base metal is limited to 33.5°, friction... The average bending angle of the material subjected to stir welding is 117.5°. This difference was measured. This difference is due to the internal effect that friction stir welding creates on the material. structural modification improves energy dissipation capacity and deformation during bending. It shows that it has significantly increased its ability. This superior bending performance of friction stir welded material, the material absorbs more energy in sudden impact situations such as collisions 15 and allows it to exhibit deformation in a controlled manner. This is useful in automotive and similar applications. a critical advantage for optimizing collision performance in applications It offers. In addition, these improved properties of the material enhance its shaping ability, friction to improve machinability and the quality of mechanical operations such as bushing insertion This confirms that stir welding is a versatile improvement method. This 20 Therefore, the material subjected to friction stir welding has both energy dissipation properties. It is clearly superior in terms of both capacity and mechanical processing performance. It is seen. The scope of protection of the invention is specified in the claims attached hereto, and these details are strictly adhered to. The explanation cannot be limited to those given for illustrative purposes. Because a 25-year-old who is an expert in the field... the person, without deviating from the main theme of the invention, in light of what has been described above, similar It is clear that these structures can emerge.

Claims

8 REQUESTS 1. The invention relates to the localized friction stir welding of aluminum profiles (A). by regionally optimizing its internal structure and mechanical properties through modification It is a method that improves energy absorption performance during a collision, The feature is; 5 in order. a) Heating the aluminum billet to form the desired profile shape. passing through an extrusion die, b) To improve the mechanical properties of the profile obtained in process step a natural aging or artificial aging or after solution treatment subjected to artificial aging treatment, 10 c) friction mixing for the creation of folding elements (2) on the profile The creation of ductile regions through its source, d) suitable for cold forming, machining and mechanical processing. Modifier elements by friction stir welding in the regions (3) creation, 15 e) profiles with controlled folding and processing properties as the final product production, It is characterized by including the process steps.

2. The invention aims to improve collision safety in vehicles and to increase the processability of the profile. 20 Regional friction stir welding to improve performance The modified aluminum profile (A) is structured and its characteristic is;  During a collision, it folds in a controlled manner, absorbing the collision energy. short profile, long to dampen and maintain the structural integrity of the vehicle profile (1,5), 25  To absorb energy during a collision and provide controlled folding. connected on short profile (1) and long profile (5) folding element (2),  To improve machining quality, to improve forming capability, bushing Short profile (1) 30 to increase the durability of fastening, screwing and riveting. and the modifying element (3) which is connected on the long profile (5), 9  Optimizing the geometric structure and strength of the aluminum profile (A) fede as a regional structural element (4), It is characterized by its inclusion.

3. The aluminum profile (A) structure conforming to Claim 2 is characterized by its aluminum- 5 made of silicon-magnesium alloy or aluminum-zinc alloy material. It is a manufactured product.

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