DWTTとは 意味・読み方・使い方

To provide a method for manufacturing a high-strength steel sheet including a high-strength sour-resistant steel sheet for a line pipe, which prevents degradation of strength and DWTT (drop weight tear test) characteristics, and can reduce the surface hardness.例文帳に追加

強度の低下とDWTT特性の劣化を防止しつつ、表面硬さを低減させることが可能な耐サワーラインパイプ用高強度鋼板をはじめとする高強度鋼板の製造方法を提供する。 - 特許庁

To provide a technology capable of stably manufacturing a billet for steel tube excellent in DWTT characteristics through hot rolling, even if the billet is thick.例文帳に追加

厚肉であってもＤＷＴＴ特性の優れた鋼管用素材を、熱間圧延で安定して製造しうる技術を提供する。 - 特許庁

To provide a thick steel plate having satisfactory HIC resistance and DWTT properties, and inexpensively producible by suppressing elevated energy cost.例文帳に追加

耐ＨＩＣ性およびＤＷＴＴ特性が良好であり、高騰するエネルギーコストを抑えて安価に製造できる経済性に優れた厚鋼板の提供。 - 特許庁

To provide a method for testing impact of dropping weight type that measures impact absorption energy and is suited for a DWTT test especially, in conformance with API standards, and a machine for testing impact of dropping weight used for it.例文帳に追加

材料の衝撃吸収エネルギーを測定し、特にＡＰＩ規格に準じたＤＷＴＴ試験に好適な落錘式衝撃試験方法およびそれに用いる落錘式衝撃試験機を提供する。 - 特許庁

Thus, a thick, high tensile-strength hot-rolled steel sheet which has small structural variation in the sheet thickness direction, further has no remarkable deterioration in low temperature toughness and is particularly excellent in DWTT characteristics and CTOD characteristics, is obtained.例文帳に追加

これにより、板厚方向の組織変動が少なく、しかも低温靭性の著しい低下もなく、とくにＤＷＴＴ特性とＣＴＯＤ特性に優れた厚肉高張力熱延鋼板となる。 - 特許庁

To provide a production method of a steel sheet for high-tension linepipes which, when used for linepipes, exhibits suitable strengths, suitable toughness, suitable DWTT properties, and excellent CTOD properties.例文帳に追加

パイプラインに利用して好適な強度、靭性、ＤＷＴＴ特性、更にはＣＴＯＤ特性に優れた高張力ラインパイプ用鋼板の製造方法を提供する。 - 特許庁

It thereby becomes a thick, high tensile-strength hot-rolled steel sheet having a structure in which the minimum lath intervals in bainite or tempered martensite in the surface of the steel sheet is ≥0.1 μm, and structural variation in the sheet thickness direction is reduced, and having low temperature toughness and particularly excellent DWTT characteristics and CTOD characteristics.例文帳に追加

これにより、鋼板表面のベイナイトまたは焼戻マルテンサイトの最小ラス間隔が0.1μm以上と、板厚方向の組織変動が少ない組織となり、低温靭性、とくにＤＷＴＴ特性とＣＴＯＤ特性に優れた厚肉高張力熱延鋼板となる。 - 特許庁