K
Kunikazu Tomita
Researcher at NHK Spring Company
Publications - 127
Citations - 1095
Kunikazu Tomita is an academic researcher from NHK Spring Company. The author has contributed to research in topics: Ultimate tensile strength & Ferrite (iron). The author has an hindex of 11, co-authored 127 publications receiving 1030 citations. Previous affiliations of Kunikazu Tomita include Sony Broadcast & Professional Research Laboratories & JTEKT.
Papers
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Development of High Strength Hot-rolled Sheet Steel Consisting of Ferrite and Nanometer-sized Carbides
TL;DR: In this paper, a ferritic steel precipitation-strengthened by manometer-sized carbides was developed to obtain a high strength hot-rolled sheet steel having tensile strength of 780 MPa grade with excellent stretch flange formability.
Patent
High formability and high tensile strength hot rolled steel sheet having excellent material uniformity, production method therefor, and working method therefor
Yoshimasa Funakawa,Eiji Maeda,Masumoto Hiroshi,Hiroshi Nakada,Saito Takanobu,Takeshi Shiozaki,Kunikazu Tomita,Tetsuo Yamamoto,Yamashita Takashi,博士 中田,邦和 冨田,英司 前田,毅 塩崎,敬士 山下,徹夫 山本,孝信 斉藤,博司 益本,義正 船川 +17 more
TL;DR: In this paper, the authors proposed a hot-rolled steel sheet having excellent material uniformity which has a reduced variation in material in a coil, particularly that of yield strength in the width direction and can be industrially put into practical use.
Patent
Hot-dip galvanized steel sheet and method for producing the same
Nagataki Yasunobu,Toshiaki Urabe,Fusato Kitano,Akio Kobayashi,Kunikazu Tomita,Shunsaku Node,Harada Kozo,Shogo Sato,Inazumi Toru +8 more
TL;DR: A hot-dip galvanized steel sheet is produced by rough rolling a steel, finish rolling the rough rolled steel at a temperature of Ar3 point or more, coiling the finish rolled steel with a pre-plating heating temperature of Ac1 to Ac3.
Patent
Ultrahigh tensile strength steel sheet having excellent workability, production method therefor, and working method therefor
Yoshimasa Funakawa,Eiji Maeda,Takeshi Shiozaki,Kunikazu Tomita,Tetsuo Yamamoto,邦和 冨田,英司 前田,毅 塩崎,徹夫 山本,義正 船川 +9 more
TL;DR: In this paper, the authors propose an ultra-high tensile strength steel sheet which has excellent elongation and strength-flanging properties as the indexes of workability, and provide a production method, and to provide a working method therefor.
Patent
High tensile strength cold rolled steel sheet having excellent deep drawability, production method therefor and working method therefor
TL;DR: In this article, the authors proposed a high tensile strength cold rolled steel sheet which is suitable for producing a product having a complicated cross-sectional shape by pressing, can be galvanized, has excellent deep drawability as an index of workability, to provide production method therefor and to provide a working method.