Analysis of Orthogonal Experiments of Pickling Process Parameters before Cold Drawn 45 Steel

Pickling is an important pretreatment process before the cold drawing,and the factors which influence the effects of pickling include acid concentration,temperature,pickling time,and so on.The cold drawn 45 steel materials which are commonly used in the drive shaft were taken as an example in this paper,it used the orthogonal experiment method to optimize the pickling process parameters such as acid concentration,pickling temperature,pickling time,and so on,then evaluated and analyzed the surface quality and the plasticity performance index of the materials after the pickling experiment.The experiment results showed that the combined effects of pickling 45 steel are better when the pickling process parameters are 17% the sulphuric acid concentration,50 ℃ the pickling temperature,5 min the pickling time.