Application of hydraulic rotary joint in aluminum foil

Rotary joints are widely used in hydraulic forming equipment, mainly providing hydraulic power for the equipment. In the aluminum foil industry, the equipment for manufacturing aluminum foil mainly comes from Germany. The cost of a set of aluminum foil assembly lines is expensive because the product requires high equipment requirements, resulting in complex processes and relatively high requirements for the parts of the aluminum foil machine The hydraulic rotary joint technology parameters used in aluminum foil equipment are also very high, and currently few domestic rotary joint manufacturers can produce corresponding products

SD Company, in order to meet the gap of hydraulic rotary joints for aluminum foil equipment in China, has conducted long-term research and development. The first aluminum foil machine equipment hydraulic rotary joint was applied in 2016, and according to customer feedback, the effect should be very good. It is still in use, with stable performance and no maintenance records in the middle. The central rotary joint of the aluminum foil equipment has four oil channels and is connected in SAE flange form. The technical requirements parameters are: speed of 800Rpm, pressure of 25Mpa, temperature of 150 ° C, aperture of 20mm. This is a large hydraulic rotary joint. In such a large product, the required speed is so high, and the manufacturing process is very complex, SD uses high-speed steel that has undergone special treatment to make it more rigid, while ensuring hardness and overall performance. The interior adopts a labyrinth seal to effectively isolate each channel. The sealing material is a combination of metal and polymer materials, ensuring hardness and flexibility, and providing good contact between the shaft and the seal, effectively reducing friction. The hydraulic oil continuously lubricates the shaft, making it smoother under high-speed rotation, thereby extending its service life. The aluminum foil equipment hydraulic rotary joint is a product with strong comprehensive performance and core technology