The unit is composed of hydraulic and double conic placing,hydraulic spading and drawing ,straightening,shearing,end stopping,coiling,feeding,dropping cart,ect.
To avoid the diseconomy caused by frequently starting and stopping of the generators, a rule of “capacity limit” is adopted to coordinate the bidding behaviors.
The results show that the failure is mainly attributed to the inappropriate heat-treatment technology of the locking nut and the hydrogen brittlement from electroplating of the stopping pad.