Friction stir welding why become the protagonist of aluminum alloy welding technology
hmwadeseo > 03-19-2025, 09:18 AM
Light alloy, aluminum alloy as a kind of excellent properties in recent years in our country industry get promoted.Due to the different physical and chemical characteristics of aluminum alloy steel and other traditional industrial materials, under the condition of the traditional manufacturing technology, the use of aluminum alloy has some bottlenecks.Only through technology innovation and revolution, to break through the bottleneck, to the excellent performance of aluminum alloy to shine in various industrial fields.
Connection technology is one of the bottlenecks in the process of aluminum alloy processing and manufacturing.Traditional connection technology including riveting and welding, and the two ways for aluminum alloy, respectively obvious shortcomings in terms of efficiency and performance.How to adopt a way of connection, not only has high efficiency, but also has high performance, at the same time can both environmental protection and green manufacturing?It was like to describe a perfect technology, and actually really exist?
Friction stir welding, for most people, the term is also very strange.Friction stir welding as a kind of automatic solid connection technology, overcome the low efficiency and poor sealing of the problems of riveting, has also changed the welding for aluminum alloy "water" and the operator of the occupational health problems.The technique was only 20 years, but in the world within the scope of all kinds of industrial applications has made brilliant achievements.
Five major advantages
Friction stir welding is developing rapidly
Friction stir welding as a kind of connection method of solid phase is based on the numerical control machine tool mode of a kind of welding way, both operational, or accuracy, and have not substitute technology in such aspects as environmental pollution-free advantages.
First of all, the friction stir welding technology is implemented under the plastic state of materials, products with high weld metallographic consistency and weld hot cracking, welding defects such as inclusions, porosity.
Second, friction stir welding technology using automated machinery and equipment for welding, to avoid the dependence on operating workers technical proficiency, for all position welding automation, improve work efficiency.
Third, friction stir welding technology without having to treat the welding products for special treatment, do not need to open groove, filling materials and protective gas, the welding process is simplified.
Fourth, friction stir welding process does not produce dust, spatter, ultraviolet radiation and electromagnetic radiation, to realize the welding process of green, environmental protection and harmless.
Fifth, friction stir welding of weld residual stress is low, basic no deformation, weld properties close to the parent metal, mechanical performance, improve the reliability of the weld.
In Europe, friction stir welding applied in shipbuilding industry, the earliest ship for manufacturing aluminum alloy, aluminum alloy panel welding problem, need to be solved before welding welding way prone to "thin horse phenomenon" (hull structure in the process of welding, will produce certain deformation, especially the plate and the superstructure, welding deformation especially, commonly known as "thin horse phenomenon"), the phenomenon not only cause the loss of hull surface beautiful degree, but also can not meet the requirements, the material strength indexes and the application of friction stir welding to solve the problem.So, before the introduction of friction stir welding in China, has been manufacturing aluminum boat, until Beijing FSW technology co., LTD., for the first time in a certain type of missile speedboats scale application of friction stir welding technology, the notion of the over China cannot make aluminum boat.At present, the friction stir welding technology has been widely used on naval ships and yachts.Can say, because of the friction stir welding technology, the application of aluminum alloy in the field of ship to expand.