The minimum thickness of 50 and 360 μg/cm 2 of self supporting 56 Fe targets have been obtained with focused ion beam sputtering and rolling, respectively.

The paper introduces the methods for making Be foils including rolling, resistant heating, focused ion beam sputtering, centrifugal precipitation and electricity vibration.

In accordance with space engaging principle and analyzing the processes of cold rolling involute spline,a general 3-D mathematic model of involute spline is built up.

key or 6 key square serration axle is the traditional structure of starter armature shaft for auto and tractor and has been replaced by cold rolling multi key involuting serration axle.

According to the analysis of development trends of rolling technology, we can see that it is necessary to accurately describe the Stress and Strain Field, the metal flow law and load prediction through Finite Element Analysis (FEA) on cold rolling for spline tube, as well as metal forming mechanism.

The cold rolling process of this kind of parts and the principle of the die design were elaborated,and so did the machining,installing and alignment of the rollers.

The roller design is the key point for the cold rolling technology.

According as design standard of involute spline cold roll forming die, it will provide the basis for realizing CAD of involute spline,die with coordinate equation of involute spline cold roll forming die tooth conducted.