Superplastic forming utilizes the extremely high elongation rates (reaching hundreds or even thousands of percent) exhibited by materials under specific temperatures and strain rates to achieve one-step integral forming of complex thin-walled components. By precisely controlling temperature and gas pressure, this technology enables materials to flow uniformly and smoothly like thermoplastics, achieving complete adhesion to the mold cavity. Its core value lies in forming deep-drawn, structurally complex, and highly integrated precision components with significant advantages such as low residual stress and high forming accuracy. It finds extensive applications in aerospace, automotive manufacturing, and high-end medical equipment sectors.
PRODUCT DESCRIPTION
1. Loading and Heating Stage: Specialized plates exhibiting superplasticity (such as titanium alloys, aluminum alloys, etc.) are securely clamped between a sealed mold and an upper pressure plate, forming a closed cavity. The mold is then transferred into a heating furnace, where a precision temperature control system heats the sheet to its superplasticity temperature range (typically 0.5–0.9 times the material's melting point; e.g., approximately 900°C for TC4 titanium alloy). At this temperature, the material's internal structure transitions into a superplastic state, preparing it for subsequent forming.
2. Pressure Forming Stage: Once the temperature stabilizes at the target value, an inert protective gas (such as argon) is introduced into the sealed cavity above the sheet. Precise gas pressure is then applied according to a preset “pressure-time” curve. Under the combined effects of high temperature and gradually increasing pressure, the sheet undergoes superplastic deformation. It uniformly and controllably expands toward the mold cavity until it fully conforms to the mold, forming the desired complex shape. This process avoids localized thinning or fracture typically caused by conventional stamping.
3. Cooling and Removal Stage: After the part is fully formed, pressure is maintained for a period to stabilize the shape, followed by controlled cooling. Once the temperature drops to a safe range, internal pressure is released, the mold is opened, and the formed part is removed. The final part exhibits distinct features: sharp contours, uniform wall thickness, no springback deformation, and seamless construction throughout.
CUSTOMIZED PRODUCTS
We offer customized cellulose ether solutions to match your specific application, viscosity, setting time, and performance requirements.
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