Technical requirements for mirrored stainless steel sculptures mainly include the following aspects:
Engineering adaptability in the design stage:
Structural mechanics verification: Stainless steel sculptures need to withstand dynamic pressures such as wind loads and seismic forces. Sculptures with a height of more than 5 meters must undergo wind tunnel simulation tests to ensure their stability.
Material thickness and shape balance: Stainless steel plates with a thickness of 2-8mm are commonly used, and complex curved surfaces require segmented forging processes. Carbon steel skeletons need to be added inside to enhance stability.
Thermal deformation reserve design: The temperature difference in sunlight will cause metal expansion, and sliding supports need to be set at the connection nodes to cope with metal expansion.
Material selection and pretreatment:
Corrosion resistance grade matching: 316L stainless steel is recommended for coastal areas, and 2205 duplex steel can be used in industrial pollution areas.
Surface treatment technology: The mirror effect needs to be polished step by step to #1500 mesh, and finally electrolytic polishing is used to eliminate the stress layer; PVD coating technology can be used for color treatment; nano coating technology is used for anti-fingerprint treatment.
Welding material control: ER309L welding wire should be used for welding of dissimilar steels, and the interlayer temperature should be strictly controlled below 150℃.
Processing technology points:
CNC cutting accuracy: The laser cutting tolerance should be controlled at ±0.1mm/m, and 1-2mm processing allowance should be left for plasma cutting.
Welding deformation control: The segmented desoldering method, rigid fixation and anti-deformation method are used to reduce welding deformation.
Surface quality control: A blue dot test is required after pickling and passivation to ensure the integrity of the passivation film.
