GNEE specializes in manufacturing various railway elastic clips and offers customization. Feel free to send drawings for inquiries. The heat treatment process for railway elastic clips from GNEE factory includes the following key steps.
1. Material selection
The raw material for railway elastic clips is 60Si2MnA hot-dip tool steel, ensuring that the composition meets standards, the surface carburizing layer does not exceed one percent of the diameter, the grain size meets specified standards, and the high-purity graphite carbon content meets requirements.
2. Manufacturing process
Blank cutting
High-frequency non-contact heating
Stamping die forming
Oil cooling and carburizing
Medium-temperature quenching
Shot peening treatment
Corrosion protection solution
3. Characteristics and structure
The characteristics and structure of railway elastic clips require a post-carburization strength of HRC60 and a post-quenching strength between HRC44-48. After 3-5 million fatigue tests, there should be no fracture, and the residual deformation should not exceed 1.b250m.
4. Heat treatment process
Induction heating is used with an induction switch (electromagnetic coil). The alternating electromagnetic field induces skin effect, generating high-density current on the workpiece surface, leading to an increase in temperature in the heating layer. Rapid cooling completes surface carburization, meeting the requirements of the heat treatment process.
5. In conclusion
These steps ensure the quality and performance of railway elastic clips in production.
