Why is it not necessary to weld the aircraft?
Why is the aircraft manufactured without welding and the aircraft welded? There are mainly the following reasons! 01 Material ▼ The main manufacturing material of the aircraft is aluminum alloy. It adopts the traditional welding form. After welding, there is local stress concentration in the welding area, the Metal becomes brittle, and it is easy to produce blisters, bubbles and micro cracks. When these components work in the vibration environment for a long time. Cracks will occur at the welds, and finally fatigue fractures will pose a threat to engineering safety, especially in high-risk areas such as high-speed locomotives and aerospace. The latest large passenger aircraft bodies have begun to use composite materials. These composite materials are made of a variety of single materials through a composite method, and then made by a special process, the welding is more difficult than the aluminum alloy, and the manufacturer hardly uses welding. 02 Working characteristics ▼ The tensile, vibration and fatigue experienced by the aircraft during high-speed flight are the main causes of deterioration of welding performance. Working in such an environment for a long time may cause small cracks to occur at the weld. The crack then expands along the weld and even causes the aircraft to disintegrate in the air. 03 Use characteristics ▼ There are many complicated and sophisticated instruments in the aircraft body. During the long-term use, various devices may have different degrees of damage. If welding is used, the skin of the aircraft will be completely replaced, which will increase the maintenance cost. And single maintenance difficulty. Even if there is no equipment failure, the aircraft needs to be inspected and maintained on a regular basis, including the need to disassemble the connected parts for inspection and maintenance. Welding is a non-detachable connection that, once disassembled, destroys the structure. 04 directly riveted ▼ The aircraft is not welded and riveted for easy maintenance and replacement. The riveting has good anti-vibration and anti-fatigue characteristics, and naturally has the ability to resist cracking due to the presence of connecting holes. The riveting also has the characteristics of small connection deformation, low requirements on the connection environment, and is suitable for thin parts connection. 05 riveting type ▼ a) Ordinary riveting - rivet riveting, countersunk rivet riveting b) Sealed riveting - 镦 burying head rivet, full-point rivet, semi-full crown rivet, BRILES rivet  c) interference fit riveting - headless rivet riveting d) Special riveting - single-face riveting (core rivet), ring groove rivet riveting, titanium alloy riveting e) Other riveting - explosion riveting, electromagnetic riveting, radial riveting, automatic riveting fertilizer,High Quality fertilizer,fertilizer Details, Jinzhou Lvzhiyuan Fertilizer Factory Chemicals ,Fertilizer Co., Lt d , http://www.nbfertilizer.com
 
 
 
 
 
 
 
 
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