基本信息:
- 专利标题： Method for producing high strength hot dip galvanized steel sheet
- 专利标题（中）：生产高强度热镀锌钢板的方法
- 申请号：JP2006062335 申请日：2006-03-08
- 公开(公告)号：JP2007239012A 公开(公告)日：2007-09-20
- 发明人： KONO TAKASHI , NORO HISATO , TOBIYAMA YOICHI , KIMURA YUKIO , NAGATAKI YASUNOBU
- 申请人： Jfe Steel Kk , Jfeスチール株式会社
- 专利权人： Jfe Steel Kk,Jfeスチール株式会社
- 当前专利权人： Jfe Steel Kk,Ｊｆｅスチール株式会社
- 优先权： JP2006062335 2006-03-08
- 主分类号： C23C2/02
- IPC分类号： C23C2/02 ; C21D9/46 ; C22C38/00 ; C22C38/02 ; C22C38/06 ; C23C2/06 ; C23C2/28
摘要：
PROBLEM TO BE SOLVED: To provide a method where a high strength hot dip galvanized steel sheet in which surface concentration by Si based oxide is effectively suppressed, and having surface appearance free from unplating and excellent plating adhesion can be stably produced at high productivity even in the case of a high strength steel sheet comprising Si at a high concentration (≥1 mass%).
SOLUTION: The method for producing a high strength hot dip galvanized steel sheet is provided with: a step where roughness in which the mean spacing S of local summits is ≤20 μm and the arithmetic mean roughness Ra is ≥0.2 μm is imparted to the surface of a steel comprising 1 to 3 mass% Si; a step where the steel with the roughness imparted is rolled; a step where the rolled steel is subjected to oxidation heat treatment, and is then subjected to reduction annealing heat treatment; and a step where the heat-treated steel is subjected to hot dip galvanizing.
COPYRIGHT: (C)2007,JPO&INPIT
摘要（中）：
SOLUTION: The method for producing a high strength hot dip galvanized steel sheet is provided with: a step where roughness in which the mean spacing S of local summits is ≤20 μm and the arithmetic mean roughness Ra is ≥0.2 μm is imparted to the surface of a steel comprising 1 to 3 mass% Si; a step where the steel with the roughness imparted is rolled; a step where the rolled steel is subjected to oxidation heat treatment, and is then subjected to reduction annealing heat treatment; and a step where the heat-treated steel is subjected to hot dip galvanizing.
COPYRIGHT: (C)2007,JPO&INPIT
要解决的问题：提供一种方法，其中可以有效地抑制通过Si基氧化物的表面浓度被有效抑制并且表面外观没有镀层和优异的电镀粘合力的高强度热浸镀锌钢板， 即使在高浓度（≥1质量％）的Si的高强度钢板的情况下也是如此。 解决方案：高强度热浸镀锌钢板的制造方法具有以下步骤：赋予局部顶点的平均间隔S为≤20μm，算术平均粗糙度Ra为≥0.2μm的粗糙度 包含1〜3质量％的Si的钢的表面; 轧制具有粗糙度的钢的步骤; 对轧制钢进行氧化热处理，然后进行还原退火热处理的工序; 以及对经过热处理的钢进行热浸镀锌的步骤。 版权所有（C）2007，JPO＆INPIT