Induction hardening (also called high-frequency hardening) is a surface heat treatment process that selectively hardens the surface of a piston rod while keeping the core tougher. The process uses high-frequency induction heating to quickly heat the surface layer, then quenches it to harden it.

- Higher surface hardness improves wear resistance

- The core remains softer and tougher, reducing the risk of brittle fracture

- Only the surface needs to be hardened, saving energy compared to through-hardening

- Improved service life in high-wear applications

 

- Applications with high cycle rates and significant wear

- Applications where surface wear is a common failure mode

- Heavy-duty industrial applications where long service life is important

 

Not every application needs induction hardening — for many general-purpose applications, a quenched and tempered steel piston rod with chrome plating provides adequate service life at lower cost. But if you have a high-wear application where piston rod wear causes frequent replacement, induction hardening can significantly extend service life.

 

At Xinluo Hydraulic, we can provide piston rods with induction surface hardening when your application requires it. Contact us to discuss whether induction hardening makes sense for your application.