Yun-20——Particle size detection plays a vital role in shot peening technology
Yun-20
Fat girl: Yun-20, codenamed Kunpeng, is a large-scale long-range heavy-duty strategic military transport aircraft independently developed by China. With a maximum load capacity of 60 tons, it ranks among the top ten most powerful transport aircraft in the world.
Supercritical wing and shot peening technology
When the roc rises with the wind, it soars up to 90,000 miles. The Yun-20 adopts a supercritical wing design, which aims to increase the critical Mach number of the wing and delay the phenomenon of a sharp increase in resistance at high subsonic speeds. The supercritical wing adopts "shot peening technology", which improves the wear resistance, fatigue resistance and corrosion resistance of the metal, increases the strength and rigidity of the wing, and reduces the weight and wind resistance of the wing.
Particle size detection
In shot peening, the type, particle size and hardness of the shot have a direct impact on the treatment effect. Particle size detection plays a vital role in shot peening technology.
Influence on surface roughness: During the shot peening process, the particle size of the projectile directly affects the surface roughness of the treated material. Smaller-sized projectiles usually produce smoother surfaces, while larger-sized projectiles may lead to increased surface roughness. For example, in the traditional shot peening process, when the material is treated with projectiles of different particle sizes, obvious changes in surface roughness can be observed. Through particle size detection, projectiles of appropriate particle size can be selected to achieve the required surface roughness requirements. This is crucial for some applications with high surface quality requirements, such as parts in the aerospace field.
Determine residual stress distribution: Particle size detection also has an important influence on the residual stress distribution after shot peening. The appropriate projectile particle size can produce a uniform residual stress distribution, thereby improving the fatigue life of the material. Studies have shown that smaller-sized projectiles can produce a deeper residual stress layer during shot peening, but the peak value of the residual stress may be relatively low. In contrast, larger-sized projectiles can produce a higher residual stress peak, but the depth of the residual stress layer may be shallow. Through particle size detection, projectiles of appropriate particle size can be selected according to specific application requirements to optimize the residual stress distribution.
Summary
Particle size detection can provide key parameter information for the shot peening process, thereby optimizing the shot peening effect and improving the performance and service life of the material.
Fat girl: Yun-20, codenamed Kunpeng, is a large-scale long-range heavy-duty strategic military transport aircraft independently developed by China. With a maximum load capacity of 60 tons, it ranks among the top ten most powerful transport aircraft in the world.
Supercritical wing and shot peening technology
When the roc rises with the wind, it soars up to 90,000 miles. The Yun-20 adopts a supercritical wing design, which aims to increase the critical Mach number of the wing and delay the phenomenon of a sharp increase in resistance at high subsonic speeds. The supercritical wing adopts "shot peening technology", which improves the wear resistance, fatigue resistance and corrosion resistance of the metal, increases the strength and rigidity of the wing, and reduces the weight and wind resistance of the wing.
Particle size detection
In shot peening, the type, particle size and hardness of the shot have a direct impact on the treatment effect. Particle size detection plays a vital role in shot peening technology.
Influence on surface roughness: During the shot peening process, the particle size of the projectile directly affects the surface roughness of the treated material. Smaller-sized projectiles usually produce smoother surfaces, while larger-sized projectiles may lead to increased surface roughness. For example, in the traditional shot peening process, when the material is treated with projectiles of different particle sizes, obvious changes in surface roughness can be observed. Through particle size detection, projectiles of appropriate particle size can be selected to achieve the required surface roughness requirements. This is crucial for some applications with high surface quality requirements, such as parts in the aerospace field.
Determine residual stress distribution: Particle size detection also has an important influence on the residual stress distribution after shot peening. The appropriate projectile particle size can produce a uniform residual stress distribution, thereby improving the fatigue life of the material. Studies have shown that smaller-sized projectiles can produce a deeper residual stress layer during shot peening, but the peak value of the residual stress may be relatively low. In contrast, larger-sized projectiles can produce a higher residual stress peak, but the depth of the residual stress layer may be shallow. Through particle size detection, projectiles of appropriate particle size can be selected according to specific application requirements to optimize the residual stress distribution.
Summary
Particle size detection can provide key parameter information for the shot peening process, thereby optimizing the shot peening effect and improving the performance and service life of the material.
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