Nitriding Treatment Parameters for Extending Automotive Mold Service Life
Conclusion: Optimal nitriding temperature balances hardness and toughness. Data: 530℃ constant temperature nitriding obtains 1100-1200HV surface hardness. Explanation: Avoids high-temperature brittleness and low-temperature insufficient hardening.
Conclusion: Reasonable nitriding time determines hardened layer thickness.Data: 20h treatment forms 0.4mm uniform hardened layer for automotive molds. Explanation: Ensures sufficient nitrogen atom infiltration and diffusion.
Conclusion: Nitrogen flow rate affects treatment uniformity. Data: 0.8-1.2m³/h flow rate ensures 98% layer uniformity of mold cavity.Explanation: Stable flow avoids local insufficient nitriding.
Conclusion: Post-nitriding tempering eliminates residual stress.Data: 180℃ tempering reduces nitriding stress crack rate by 83%. Explanation: Releases internal stress generated by nitriding treatment.
Conclusion: Standard nitriding parameters reduce mold wear failure. Data: Qualified nitriding treatment cuts mold wear failure rate by 61%. Explanation: High-hardness layer improves friction and high-temperature resistance.