Process Modeling on Disk Forging
2005 Volume 76 Issue 2 Pages 141-146
Details
2005 Volume 76 Issue 2 Pages 141-146
Disk-shaped forging parts have been used for a power generation gas turbine and an airplane jet engine. High strength and durability are required for the disks. Therefore, the fine grain and homogenious grain distribution in the disks are very important. Daido Steel has developed a rotatory disk forging method in order to obtain fine and homogenious microstructure. This method has the feature that there is few dead metal region. However, a rotatory disk forging has many parameters which must be controlled. In order to solve the problems, a process modeling system has been developed and optimized forging process has been obtained as follows:
(1) The material database of INCONEL718 was built. And the axsymmetric model and 3-dimensional full model of a rotatory disk forging were created. Various information which includes the grain size inside a disk by this came to be acquired.
(2) It was shown that a rotatory disk forging is effective in equalization of grain size in a disk.
