South Africa promotes the development of aviation materials manufacturing
The newspaper Pretoria, February 20 (Reporter Li Xuehua) The National Laser Center of the South African Institute of Technology and Industry (CSIR) and the South African aviation manufacturing company Aerosud recently held a press conference, announcing that the two sides will cooperate in the Aeroswift project research. . Aeroswift's goal is to develop high-speed, high-volume high-performance metal parts laser additive material manufacturing (LAM) systems to manufacture titanium metal parts for the global aviation industry; and strive to make Aerosud a global aviation structural material in the next three years. A leader in the manufacturing field.
CSIR Dean Spies said that LAM is a revolutionary concept and a new development in laser cladding forming technology. Most of the traditional metal part forming techniques follow the material "removal" processing, such as turning, milling, drilling, grinding, planing, etc., while the laser cladding forming technology uses a new forming principle to layer and process. Addition, that is, "stacking" forming process. It uses a high-energy laser beam to form a melting pool on the metal substrate, melts the metal powder sent to the molten pool, and rapidly solidifies and combines with the matrix material in a metallurgical state. The method can directly generate the final metal parts according to the computer aided design model, stacking materials line by line and layer by layer. It is characterized by high precision and good surface quality, and can directly produce particularly fine parts.
By combining LAM technology with titanium, you can create lightweight, rugged, and complex aerospace parts. The team of CSIR and Aerosud has made a major breakthrough in the Aeroswift pre-concept proof test. The processing speed is 8.3 times that of the currently known selective laser melting machine. Currently commercial systems can only process smaller parts with a length of less than 500 mm, while Aeroswift's goal is to directly machine parts of 2 m x 0.5 m x 0.5 m.
The Aeroswift project received strong support from the South African Ministry of Science and Technology, and the Ministry of Science and Technology has invested 28 million rand for this purpose. South Africa’s Deputy Minister of Science and Technology Hannicomm praised: “The speed is incredible. To some extent, South Africans are leading the field. The importance of this technology cannot be overemphasized. It is Strengthening the manufacturing capabilities and competitiveness of the South African domestic aviation industry."
Dr. Sima Ruola, Director of the CSIR Laser Center, said that as the core of the LAM test facility, a new 5 kW IPG single-mode fiber laser has been installed and they will build a LAM manufacturing system around the laser. It is expected that the formation and testing will be completed from the end of 2012 to the beginning of 2013, and then optimization and process qualification will begin, and it is hoped that full production will begin from 2015.
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