Research On The Heat Treatment Production Process Of Railway Bullet Fastener

Rail fastening system shot is connecting rails and sleepers to form the lumping of important parts to ensure the stability of the track,play an important role in the reliability,for the safety of railway transportation plays a important influence.Spring strip fastener by elastic deformation when the stored energy to ease the role of mechanical vibration and shock,in long-term dynamic load under the action of the work,to ensure the high reliability,the elastic strip production research is very meaningful.Through the elastic bar under different heat processing manufacturing process in mechanical properties and fatigue properties were studied,access to the data in the performance differences under different conditions,and the elastic fatigue failure analysis,to study the fatigue properties of elastic strip under fatigue load,puts forward to improve an opinion on process control and material requirements,finally got the ideal process?The main work is as follows:1.The material of the material is analyzed,and the material is determined to meet the standard.2.Hardness test analysis,determine whether the elastic bar hardness meets the standard.3.The fracture surface was analyzed by macro observation,and the fracture mode was confirmed by macro observation,and the failure mechanism was preliminarily determined.4.Fracture microscopic analysis,the failure mechanism of the fracture surface is analyzed by the fracture surface..Macro analysis,the basic morphology of the fracture surface,the fracture mode,the failure mechanism of the fracture are confirmed by macro analysis..5.Experimental study on.6.heat treatment technology.6.Production practice.