The function and technical requirements of elastic fasteners
Jun 24, 2023| The clip fastener is a relatively important railway accessory. The clip is an elastic part, which is combined with a bolt and a baffle, and is collectively called a fastener.
The fastener is an important component of the track, and the rail and the sleeper are connected together through the fastener. The function of the fastener is to fix the correct position of the rail, prevent the longitudinal and lateral displacement of the rail, and prevent the tipping of the rail. At the same time, it can also provide necessary elasticity and insulation performance, and has a certain ability to adjust gauge and level. It can be seen that the elastic fastener is an important part to ensure the safety of the railway.
The main process of spring bar production is blanking, intermediate frequency heating, stamping forming, oil cooling quenching, medium temperature tempering, shot peening treatment, and anti-corrosion treatment. In order to ensure the performance and metallographic structure of the spring bar, it is required that the hardness after quenching should reach HRC60. The hardness after tempering should be HRC44-48. The elastic bars shall not be broken after 3-5 million fatigue tests, and the residual deformation shall not be greater than 1.0mm.
The quenched structure is mainly martensite, with a small amount of residual ferrite and small pieces of bainite, and it must meet the grade specified in the standard. The tempered structure should be uniform tempered troostite and tempered sorbite.
The above is some relevant content about the production of spring fasteners shared by the spring fastener manufacturers. I hope that you can use this information to increase your understanding of spring fasteners. Of course, if you want to buy elastic fasteners, our company will provide elastic fasteners with complete models, reliable quality and reasonable prices according to your needs; if you want to know more about elastic fasteners, You are also welcome to consult and contact the elastic fastener manufacturer at any time!