This is a steel material that softens only the surface of the full cross-section high-strength (quenching) while significantly improving the delayed fracture characteristics (hydrogen embrittlement resistance) despite being a high-strength steel.
This is a steel rod that has been softened to below 1200 MPa in the surface layer, which is the starting point for delayed fracture, in relation to high-strength steel materials (tensile strength reference: 1200–2200 MPa), thereby reducing the risk of delayed fracture (patent obtained). By applying this technology, the delayed fracture characteristics (hydrogen embrittlement resistance) of high-strength steel materials and high-stress components can be significantly improved, and the softening of the surface layer enhances machinability, making machining easier. It has been mass-produced for high-stress spring steel wire, high-strength deformed PC steel rods, etc.
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High-strength steel materials and high-stress components that require improvement in resistance to delayed fracture characteristics (hydrogen embrittlement).
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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 non-polluting. 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, returning to the founding principle of "Technology of Netsuren," and will continue to make unceasing efforts to be of greater service to society in the coming era.