Study Of High Efficiency Rolling Process For Low-voltage Electronic Aluminum Foil

With the rapid development of the electronics industry, the market demand for low-voltage electronic aluminum foil is becoming very large. The market is fiercely competitive.Aluminum foil processing faced with the question of high production costs and low productivity. It is a development goal of a company with existing equipment by improving the electronic aluminum foil rolling process.Electronic aluminum foil is rolled with different process.The performance of electronic aluminum foil are tested by NT9100surface profiler,iXRD residual stress tester and ZEISS scanning electron microscope (SEM).The main research contents and result of the paper are as follows:(1) Etch pits method is improved by high-precision surface profiler, a detection methods of low-voltage electronic aluminum foil dislocation density is got.(2) Low-voltage electronic aluminum foil is rolled with different times of the processing volume. The surface morphology and dislocation density are tested. The results showed that pass processing volume increases and the processing capacity is about42%. Electronic aluminum foil is compacted role reinforced by roll. Electronic aluminum foils roughness down. The deformation of electronic aluminum foil is uniformity. The dislocation density increase. Big pass processing is conducive to the formation of dislocations.(3)Low-voltage electronic aluminum foil is rolled with different tension. The residual stress, surface characteristics, dislocation density and corrosion holes of electronic aluminum foil are analyzed. The results show that the front tension of nine times is reduced by7.5kN to5.5kN and the behind tension of ten times reduce to5kN from7kN. Electronic aluminum foil deformation resistance increases and the deformation is uniformed.Electronic aluminum foil thickness difference reduces by0.5%.The residual stress distribution is more uniform. The surface morphology has little difference.Besides, the dislocation density and corrosion holes are more uniform fine.It is helpful to improve the specific capacitance of electronic aluminum foil.(4)Low-voltage electronic aluminum foil is rolled with different rolling speed. The residual stress, surface features and the dislocation density of electronic aluminum foil are tested. The results show that the8and9of the rolling speed increased from lOm/s to13m/s, electronic aluminum foil is compacted role reduced by roll.Electronic aluminum foil rolling force decreases, residual stress reduced, surface roughness increased slightly, but the difference is not big. Dislocation density is considerable. Aluminum foil temperature increases. The dislocation dynamic recovery enhances and dislocation density is slightly lower.(5)Electronic aluminum foil integrated process optimization rolling experiments is conducted. The residual stress, surface characteristics, dislocation density, corrosion hole and the specific capacitance of electronic aluminum foil are tested. The results showed that low-voltage electronic aluminum foil rolling process is changed from10to9times, the front tension of8times is reduced by7.5kN to5.5kN,9behind tension7kN reduced to5kN,6,7,8times rolling speed10m/s to13m/s.The rolling force is slightly increased, the residual stress is reduced, the surface roughness of electronic aluminum foil,autocorrelation,power spectral density is basically the same, foil temperature and dislocation density increase, corrosion holes are more uniform fine. The specific capacitance of the electronic aluminum foil Increased by5.4%.At the same time, electronic aluminum foil timber is basically no difference in productivity is greatly improved.