the extruded aluminum bar is more and more uniform with the increase of the extrusion rate. However, when it is increased to 40 mm / s, the influence on the temperature field in the longitudinal direction will be more It can be said that there is a critical value of squeezing speed on the temperature field of spray cooling of flat aluminum extrusion profiles. The critical value is 40 mm / s at this time. If the squeezing speed is less than the critical value, The influence of the field is…

Production and sales of various varieties of alumina have achieved rapid growth, there is a shortage situation, the first quarter sales up 53.5%, profit up 38%. Special alumina plant set up a special new product development and scientific and technological research group, continuing to improve product quality and adjust the product structure, work and achieved good results. UHV electrical filler identified by the overall technology reached the international advanced level, and won the first…