This is a steel material that achieves multiple strengths with a single bar of steel. By using high-frequency quenching, only the areas that require high strength and high durability can be made to have high strength.
In conventional heat treatment using furnaces, it was difficult to apply heat to the entire steel material while only treating the necessary parts. However, by utilizing high-frequency induction heating (IH) to selectively harden only a portion of the steel (enhancing strength and durability), we have achieved multiple strength levels with a single steel rod. By placing high-strength sections in areas that require structural integrity and low-strength sections in other areas, it is possible to control damage and reduce material usage. Using this technology and product, we have started selling high-strength rebar placed in column-beam joints, named "Double Stark®," which contributes to damage control in structures, reduction of rebar quantity, improved workability, and comfortable living spaces. *In 2018, we received the "Super" Monozukuri Parts Award and the Lifestyle-Related Parts Award.
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Damage control of structures and components, etc.
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Netsuren successfully commercialized and industrialized IH (Induction Heating) technology for the first time in Japan in 1946 (Showa 21). This IH technology is a double eco (Ecological and Economical) technology that uses clean electricity as its heat source, making it environmentally friendly and pollution-free. As a pioneer in this field, Netsuren has developed highly original products in addition to contract heat treatment processing, based on the know-how accumulated since its founding and its high level of technical and development capabilities, bringing transformation and contribution to various industries. The fact that Netsuren exists today and can contribute to society, even in a small way, is thanks to your unwavering support and warm patronage. To enhance corporate value through harmony and coexistence with customers, business partners, shareholders, society, and employees, Netsuren aims to remain a company with a dignified presence in the future. We will return to the founding principle of "Technology of Netsuren" and continue our tireless efforts to be of greater service to society in the coming era.