"Partial high-strength steel material" high-frequency hardening
This is a steel material that achieves multiple strengths with a single bar of steel. High-frequency quenching allows for only the areas that require high strength and high durability to be treated with high strength.
In conventional heat treatment using furnaces, it was difficult to apply heat to only the necessary parts of the steel material, as heat was applied to the entire steel. However, by utilizing high-frequency induction heating (IH) to selectively high-frequency quench only a portion of the steel (enhancing strength and durability), multiple strengths have been achieved with a single steel rod. By placing high-strength sections in areas where the integrity of structures and components must be ensured, and low-strength sections in other areas, damage control and reduction of materials are possible. Using this technology and product, we have started selling high-strength rebar placed in column and beam joints that contribute to damage control of structures, reduction of rebar quantity, improved workability, and comfortable living spaces, named "Double Stark®." *In 2018, we received the "Super" Monozukuri Parts Award and the Lifestyle-Related Parts Award.
- Company：ネツレン 高周波熱錬株式会社
- Price：Other
