After extrusion, aluminum slugs are shaped into germ tubes. The change of metal molecular structure generates stress and makes the tubes lose flexibility. To remove the stress and meet the requirements of tubes, it is necessary to carry out stress annealing treatment on germ tubes. After the annealing process, the tubes get soft. And meanwhile, the release agent on the surface of tubes volatilizes completely, which ensures the adhesion of internal coating and base coating.
The oven uses gas and heating circle to provide clean and energy-efficient heating power. Conveying basket chain puts germ tubes into the "C" basket respectively. The tubes are then driven to the oven where they are heated for 3-5mins. After that, the tubes are sent to the cooling section and then to the next procedure.
A. Tube range: φ16-φ25mm or φ25-φ35mm
B. Tube length: ≤200mm
C. Production speed: 120 tubes/min
D. Working temperature: 200℃-450℃
E. Dimensions: 4250*1400*2500mm
F. Weight: about 5000KG
A. SIEMENS PLC controls the temperature automatically. SICO burn-up device can regulate the fire according to the internal temperature of the oven. FUJI temperature controller ensures the temperature within plus or minus 2 ℃ of setting temperature.
B. The machine adopts hot air recycling system(heating box, fan and air channel). The box employs convective mixing technology which can ensure uniform heating. The internal temperature of oven is uniform due to the circle of the hot air. Thus the effect of annealing is excellent and the products are of high quality.
C. The machine is safe, convenient and energy-efficient. It can not only use natural gas, but also liquefied petroleum gas. Using gas for heating is both effective and economical.
D. The tube conveying chain adopts continuous viable, which can make the equipment and the last device have the same production speed. The sprayer machine provides main driving force for the chain.
E. The oven chamber adopts suspended structure which is convenient for maintenance and makes the conveying basket more stable during the operation of the furnace cavity, reducing the incidents of dropping and crushing tubes, so as to improve the qualified rate of products.
