Processing method of closed-up pull rod

The invention relates to a processing method of a closed-up pull rod. The processing method mainly comprises the steps that the middle wall thickness (1) of a pipe is forged and thinned and then an end head (2) of the pipe is closed up so that the wall thickness of the end head of the pull rod achieves the requirements of using performance of the pull rod. The processing method provided by the invention ensures that the processing efficiency of the pull rod is greatly improved, the pull rod is not influenced by the temperature of thermal closing-up equipment when processed, each performance of the processed pull rod is better than that of a thermal closed-up pull rod, and each test data also meets all the requirements of technical conditions of the pull rod.