PROCESS INTRODUCTIONS
 ‘Cross Wedge Rolling’ is a new kind of high–efficient metal plastic molding technology. Its main working principles are as follows: two rollers (whose axles are placed parallel) with cuneiform molds rotate in the same direction; they drive the bars to come into the process of molding, sizing and cutting with the effect of the wedge-hole type; then the bars are rolled into the Multi-diameter axle-kind parts. Compared with the traditional forging and cutting technology, the advantages of the wedge cross rolling technology are as follows: the products have smooth and fine surfaces with less finishing allowance, which can directly come into the semi-finish turning process; the metal fibers of the rolled parts are distributed continuously along the axis and the comprehensive mechanical functions rise by more than 20%; the rolled parts are formed in one time and the production efficiency is 5 times higher.

     Now our company has 9 cross wedge rolling production lines such as H630, H750, H1000, H1600, 48 machining production lines and 3 isothermal normalizing production lines, annually producing all kinds of shaft part blanks 9 million pieces and rough turning processing parts over 2 million pieces. The diameter of the rolled parts ranges from 10 mm to 160mm and the length from 20mm to 1600mm. At present, our company is a specialized cross wedge-rolling producer in China with the biggest production capacity and the most complete product specifications.

PROCESS ADVANTAGES
      The cross-wedge rolling is a kind of advanced technology that is of high quality and efficiency, low energy consumption and high precision. Compared with forging technology, producing forge piece by the cross- wedge rolling in the field of production of the shaft-parts has its unique advantages. Its material utilization increase more than 10% compared with the rolling and forging process, and labor productivity is raised 30%-50%. Also the products have good quality and high dimensional precision; the height tolerance and the weight tolerance are under control; the rate of finished products is improved greatly.

1) Higher production efficiency: 10 pieces per minute
2) Higher material utilization: more than 90%
3) Long-life dies: more than 10 times than that of die forging process
4）Good quality: the precision can be up to micron order of the steel-die -forgings national standards( diameter:±0.3mm, length: ±0.5mm)