The first set of large-scale turbine disk broaches with slots in China was born in EST.
The broach won the title of the first set in key areas of China in 2013 .
Turbine disks are made of superalloy which exibit mechanic characteristics but is hard to process .
In 2010, the first set of large-scale turbine disk fir-tree broach made in China was born in EST. These whole set of broaches are composed of 32 broaches,with a total length of 21 meter , including rough broaching,semi-finishing broaching, finishing broaching and chamfering broaching.