オーステナイト系ステンレス鋼の温間鍛造技術

概要

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Warm forging technology of austenitic stainless steels has been developed. This technology was accomplished by considering characteristics of forged materials, tool materials and luburicants.In the second half of the 1960s, many efforts were devoted to development of warm forging of austenitic stainless steels, but results were only limited to the stainless bolts because of high deformation resistance and poor lubricity. In the 1980s, the development of hardware like multi-stage clod former, induction heater and tooling was highly accelerated but it was not fast enough to lead to mass-production.In the beginning of 1990s, researches on the forging of austenitic stainless steels were made in Daido Steel and now varieties of forging parts which are based on the combination of technology of tool-material-lubricant and FEM analysis to minmize trial and errors, are in production.
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