Publish Time: 2022-04-07 Origin: dapeng
1. Application of laser welding
In the 21st century, the application of double beam laser welding technology has brought a great technological change to the world aerospace manufacturing industry. In order to solve the welding problem of the T-joint between the skin and the stiffener of the panel structure, this technology uses two laser beams to simultaneously weld both sides of the T-joint of the panel structure to complete the connection between the skin and the stiffener. The dual-beam laser welding technology uses a symmetrical welding heat source to simultaneously weld from both sides of the T-joint, which minimizes the deformation caused by welding and ensures the shape accuracy of the outer surface of the skin. Therefore, double-beam laser welding technology has been rapidly applied in the field of foreign aviation manufacturing.
aircraft wing structure
In order to keep up with the development of foreign laser welding technology research and application, my country's dual-beam laser welding technology research has also achieved major breakthroughs, and it has been applied to the integrated welding of aircraft titanium alloy siding structural skins and stiffeners. The 12kW multi-module continuous fiber laser products developed by Raycus have the advantages of high electro-optical conversion efficiency, good beam quality, high energy density, wide modulation frequency, high reliability, long life, and maintenance-free operation. They can be used in aerospace Welding of field aircraft skins and stringers.
Recommended Product——C12000X Multi-Module Continuous Fiber Laser
Multi-module CW fiber laser RFL-C12000X
Application cases: longitudinal bone welding, panel welding, pure titanium welding of satellite parts
Laser welding passenger aircraft skins and stringers (two-sided laser welding of T-joints)
Fuselage panel laser welding device
Welding on both sides of T-joint for wall plate structure
2, the application of laser cleaning
According to experts in the research and development of laser cleaning technology and equipment manufacturing, laser cleaning can be used to clean the oxide film before rocket welding, the cleaning of the carrier rocket tank structure, and the cleaning of aero-engine blades. In foreign countries, the United States has maturely applied laser cleaning technology to the surface cleaning of fighter jets and transport aircraft. The surface cleaning technology of dozens of titanium alloy parts in aero-engines produced by Rolls-Royce in the United Kingdom also uses laser cleaning.
The principle of laser cleaning is to use the high energy density of the laser and the impact and vibration of the laser pulse to act on the surface of the object to be cleaned. Using the difference in laser absorption coefficient between the substrate and the attachment, the attachment or coating on the surface of the object to be cleaned is instantly evaporated or peeled off, thereby realizing the cleaning process. What are the advantages over traditional cleaning methods? Compared with chemical cleaning, it does not require chemical agents and has no pollution to the environment; compared with mechanical cleaning, it does not touch parts, does not generate stress, and does not affect the performance of parts; compared with ultrasonic cleaning, laser cleaning can be carried out with a manipulator. The operation is more flexible and efficient; and the power of the laser cleaning machine is only a few kilowatts, only a few kWh per hour, and the use cost is low.
The pulse series cleaning lasers launched by Raycus can be applied to various application scenarios of aerospace, and customers can choose suitable laser models according to different needs.
Recommended Product 1 - P250MX Pulsed Fiber Laser
Pre-weld cleaning of titanium alloys in aerospace engine manufacturing
Recommended Product 2——P500+C2000 Ring Spot Compound Cleaning Laser
P500+C2000 Ring Spot Compound Cleaning Laser
Technical advantages:
Ring spot technology, center high peak pulse, outer ring continuous
The inside and outside are independent of each other, do not cover each other, and enhance the scope of application
High peak, high energy density, greatly improved cleaning efficiency
Application cases: Derusting of aircraft parts (80μm rust layer can reach ≥5M⊃2;), non-ferrous metal oxide layer cleaning such as aluminum alloy (30μm aluminum alloy oxide layer ≥5M⊃2;)
Recommended product 3——P300+A2000D fiber-semiconductor compound cleaning laser
P300+A2000D Fiber-semiconductor compound cleaning laser
Technical advantages:
Laser output after homogenization, clean surface quality is good
Dual-machine composite output, adjustable light spot before and after, high cleaning efficiency
Cleaning ability:
Enhanced adaptive cleaning
The efficiency is about 2-3 times higher than that of the 500W cleaning machine
200μm epoxy resin paint, cleaning efficiency ≥3M⊃2;
Application case: Helicopter tail beam and fairing paint removal, propeller paint removal
Aircraft skin cleaning (200μm epoxy resin paint, cleaning efficiency ≥3M⊃2;)
3. 3D printing technology application
As countries develop and formulate national strategies and plans to promote their technology, 3D printing technology is gradually receiving extensive attention from governments, research institutions, enterprises and media. In the aerospace field, which is characterized by high precision and has extremely high requirements for material lightweight and performance, it has always played the role of "traffic star".
What is the "magic" of 3D printing? It is a scientific and technological system based on the principle of discrete-accumulation, which is driven by the three-dimensional data of the parts to directly manufacture parts. It does not require traditional tools, fixtures and complex processing procedures, and can quickly and precisely manufacture parts of any complex shape on one piece of equipment. , thus realizing the "free manufacturing" of parts, solving the forming of many complex structural parts, and greatly reducing the processing procedures and shortening the processing cycle, and the more complex the product structure, the more significant the effect of its manufacturing speed. At present, in the aerospace field, NASA of the United States is at the forefront of the application of 3D printing technology. NASA engineers are already using additive manufacturing to create the first full-scale copper alloy rocket engine parts to save costs, according to reports.
Chinese scientific research institutions and enterprises are also constantly exploring 3D printing technology, and they are at the world's leading level in this field. Raycus Laser is a representative enterprise exploring the application field of 3D printing technology. Last year, Raycus launched a series of blockbuster new products for 3D printing. The 3D printing series of lasers developed by Raycus adopts a new design, optimizes the power monitoring system, effectively suppresses high-order modes, and achieves high stability while having a more compact structure. , High beam quality laser output. Highly customized QBH/QCS laser output jumpers are also provided for this series of lasers to adapt to mainstream optical systems used in printing equipment. This series of lasers can be applied to aero engines and their parts to complete high-quality printing tasks as required.
Recommended Product - C1000AM Fiber Laser for 3D Printing
C1000AM Fiber Laser for 3D Printing
Application advantages:
very high beam quality
Compact structure design
High power stability and consistency
Application cases: aero-engine manufacturing, propeller blade manufacturing
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