JP2002356760A - Material for civil-engineering and member for civil- engineering having excellent corrosion resistance - Google Patents
Material for civil-engineering and member for civil- engineering having excellent corrosion resistanceInfo
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- JP2002356760A JP2002356760A JP2002090795A JP2002090795A JP2002356760A JP 2002356760 A JP2002356760 A JP 2002356760A JP 2002090795 A JP2002090795 A JP 2002090795A JP 2002090795 A JP2002090795 A JP 2002090795A JP 2002356760 A JP2002356760 A JP 2002356760A
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、耐食性に優れた溶
融Ｚｎ−Ａｌ−Ｍｇ系合金めっきが施された土木用資材
および土木用部材であって、具体的には、配管用部材、
フェンス（床板）用部材、補強用部材、橋梁用部材等に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a civil engineering material and a civil engineering member plated with a molten Zn--Al--Mg alloy excellent in corrosion resistance.
The present invention relates to a member for a fence (floor panel), a member for reinforcement, a member for a bridge, and the like.
【０００２】[0002]
【従来の技術】従来、配管用、フェンス（床板）用、補
強用、橋梁用等に使用される土木用資材および土木用部
材には、普通鋼、高張力鋼に連続式溶融亜鉛めっき設備
で溶融亜鉛めっきを施しためっき鋼板、めっき鋼板に塗
装を施した塗装溶融亜鉛めっき鋼板、各種鋼板に直接塗
装処理した塗装鋼板等が使用され各種部材に成形加工さ
れている。各種鋼板を使用形態に加工した後に電気亜鉛
めっきを施し、さらに化成処理を施した電気亜鉛めっき
鋼材も使用されている。2. Description of the Related Art Conventionally, civil engineering materials and civil engineering members used for piping, fences (floor boards), reinforcements, bridges, etc. are made of ordinary steel and high-strength steel by continuous hot-dip galvanizing equipment. Hot-dip galvanized steel sheets, coated hot-dip galvanized steel sheets coated on steel sheets, coated steel sheets directly coated on various steel sheets, and the like are used and formed into various members. Electrogalvanized steel materials are also used in which various steel sheets are processed into use forms, electrogalvanized, and further subjected to a chemical conversion treatment.
【０００３】近年、軽量化、長寿命化を目的に鋼製部材
に加え、ステンレス鋼やアルミニウム合金を使用した各
種部材も開発されているが、コスト面、プレス成形性や
溶接性の観点から使用される部位は制限されている。[0003] In recent years, in addition to steel members, various members using stainless steel or aluminum alloy have been developed for the purpose of weight reduction and long life. However, these members are used from the viewpoint of cost, press formability and weldability. The sites to be performed are restricted.
【０００４】一方、普通鋼板、高張力鋼板、ステンレス
鋼板等を所定形状に成形加工した後、溶融めっき浴に浸
せきした（以下、「後めっき法」と称す）土木用部材が
多く製造されている。後めっき法は、めっき付着量を多
くすることができるので耐食性の面では優れているが、
成形加工後に高熱のめっき浴に浸せきされるため熱歪み
の影響が出やすい、めっき表面肌が均一でないため塗装
を施しても外観が劣化する、塗膜の密着性が劣化すると
いう問題がある。また、成形加工した後にめっき処理を
施すために、生産性の高い連続めっきプロセスで製造し
ためっき鋼板を成形加工して土木用部材とするよりも生
産性に劣る。[0004] On the other hand, many civil engineering members are manufactured by forming a normal steel plate, a high-strength steel plate, a stainless steel plate or the like into a predetermined shape and then immersing it in a hot-dip plating bath (hereinafter referred to as "post-plating method"). . The post-plating method is excellent in terms of corrosion resistance because the amount of plating can be increased, but
It is immersed in a high-heat plating bath after the forming process, so that it is easily affected by thermal distortion, and the surface of the plated surface is not uniform. Further, since the plating process is performed after the forming process, productivity is inferior to forming a plated steel sheet manufactured by a continuous plating process with high productivity into a civil engineering member.
【０００５】[0005]
【発明が解決しようとする課題】風雨などによる材質劣
化、土壌や異種材料との接触による耐食性の劣化、耐疵
付き性の劣化等に対して、より耐久性の優れた土木用資
材および土木用部材が求められている。本発明は、従来
の溶融めっき鋼板や塗装鋼板に比べ耐食性が優れ、後め
っき法により製造された亜鉛めっき鋼材と同等以上の耐
食性を有し、ステンレス鋼やアルミニウム合金等より安
価に製造できる土木用資材および土木用部材を提供する
ことを目的としている。The materials for civil engineering and civil engineering are more durable against deterioration of the material due to wind and rain, deterioration of corrosion resistance due to contact with soil or dissimilar materials, deterioration of scratch resistance, and the like. There is a need for components. The present invention has excellent corrosion resistance compared to conventional hot-dip coated steel sheets and painted steel sheets, has corrosion resistance equal to or higher than that of galvanized steel materials manufactured by a post-plating method, and can be manufactured at lower cost than stainless steel and aluminum alloys. It is intended to provide materials and civil engineering members.
【０００６】[0006]
【課題を解決するための手段】上記目的は、Ｍｇ：１〜
４重量％、Ａｌ：４〜２２重量％、残部Ｚｎおよび不可
避的不純物からなる溶融Ｚｎ−Ａｌ−Ｍｇ系合金めっき
が施された土木用資材および土木用部材によって達成で
きる。溶融Ｚｎ−Ａｌ−Ｍｇ系合金めっきは、さらにＴ
ｉ：０．００１〜０．１重量％、Ｂ：０．０００５〜
０．０４５重量％を含有することができ、さらに必要に
応じて希土類元素，Ｙ，ＺｒまたはＳｉから選ばれた易
酸化性元素の少なくとも１種を０．００５〜２．０重量
％含有することができる。SUMMARY OF THE INVENTION The object of the present invention is to provide:
4 wt%, Al: 4 to 22 wt%, can be achieved by a civil engineering material and a civil engineering member plated with a molten Zn—Al—Mg-based alloy, the balance being Zn and unavoidable impurities. Hot-dip Zn-Al-Mg based alloy plating is
i: 0.001 to 0.1% by weight, B: 0.0005 to
0.045% by weight, and if necessary, 0.005 to 2.0% by weight of at least one oxidizable element selected from rare earth elements, Y, Zr or Si. Can be.
【０００７】本発明の土木用部材としては、コルゲート
パイプ，フリューム，グレーチング，レインシューター
（水路），フレキシブルパイプ等の配管用部材および継
ぎ手，吊り具，金具等の配管固定具類、落石保護のネッ
トや柵，補強板，足場板，仮囲いフェンス，エキスパン
ドメタル，パンチングメタル，縞鋼板・エンボス鋼板・
チェッカープレート等のフェンス（床板）用部材および
固定金具類、アンカー，鋼管膨張式ロックボルト、コン
クリートパネル芯材（ラス材），コンクリート型枠，コ
ンクリート型枠押さえ金具，パネル枠材，鋼管製束部
材，建築用基礎鋼製型枠（パネル，スぺーサー，ホルダ
ー，サポート，セパレーター，金具類で構成）等の補強
用部材、ライフラインや排水管の固定具，鋼線（ケーブ
ル），構造部材等の橋梁用部材、ワッシャー、軽量溝形
鋼、Ｈ形鋼、Ｃ形鋼、丸鋼管、角鋼管、異形管、照明ポ
ール、標識部材、荷役運搬部材（キャスター，荷台板）
等がある。The civil engineering members of the present invention include piping members such as corrugated pipes, flumes, gratings, rain shooters (waterways), and flexible pipes, and pipe fixing members such as joints, hanging tools, metal fittings, and nets for rock fall protection. And fences, reinforcing boards, scaffolding boards, temporary enclosure fences, expanded metal, punching metal, striped steel sheets, embossed steel sheets,
Fence (floor panel) members and fixing hardware such as checker plates, anchors, steel pipe inflatable lock bolts, concrete panel core material (lath material), concrete formwork, concrete formwork holding metal fittings, panel frame materials, steel pipe bundle members , Reinforcement members such as formwork made of basic steel for construction (comprising panels, spacers, holders, supports, separators, and fittings), fixtures for lifelines and drainage pipes, steel wires (cables), structural members, etc. Bridge members, washers, lightweight channel steel, H-section steel, C-section steel, round steel pipe, square steel pipe, deformed pipe, lighting poles, signage members, cargo handling and transportation members (casters, carrier boards)
Etc.
【０００８】[0008]
【発明の実施の形態】以下、本発明の構成について説明
する。本発明の土木用資材（部材）は、連続溶融めっき
プロセスで製造されるのが生産性の面で好ましいが、従
来の後めっき法等によっても製造できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below. The material (member) for civil engineering of the present invention is preferably manufactured by a continuous hot-dip plating process from the viewpoint of productivity, but can also be manufactured by a conventional post-plating method or the like.
【０００９】本発明の土木用資材および土木用部材に
は、Ｍｇ：１〜４重量％、Ａｌ：４〜２２重量％、残部
Ｚｎおよび不可避的不純物からなる溶融Ｚｎ−Ａｌ−Ｍ
ｇ系めっきが施されている。The civil engineering materials and civil engineering materials of the present invention contain Mg: 1 to 4% by weight, Al: 4 to 22% by weight, molten Zn-Al-M comprising the balance of Zn and unavoidable impurities.
g-based plating is applied.
【００１０】めっき層中のＭｇ含有量：１〜４重量％ めっき層に含まれるＭｇは、めっき層の最表層にＭｇを
含むＺｎ系腐食生成物を形成させ、めっき層中のＡｌと
ともに一般大気環境下においてめっき層の腐食速度を減
少させる効果がある。この作用は、Ｍｇを含むＺｎ系腐
食生成物が長期間安定にめっき層上に存在し、耐食性を
劣化させる酸化亜鉛の形成が抑制されることによる。こ
の効果は異種金属腐食を起こす場合にも発揮され、異種
金属腐食の初期にはめっき層が腐食されるが、Ｍｇを含
むＺｎ系腐食生成物が生成すると異種金属とのめっき層
界面が被覆されて腐食の進行が抑制される。Mg content in the plating layer: 1 to 4% by weight Mg contained in the plating layer causes a Zn-based corrosion product containing Mg to be formed on the outermost layer of the plating layer, and together with Al in the plating layer, the general atmosphere. This has the effect of reducing the corrosion rate of the plating layer under the environment. This effect is due to the fact that Zn-based corrosion products containing Mg are stably present on the plating layer for a long period of time, and the formation of zinc oxide that deteriorates corrosion resistance is suppressed. This effect is exerted even when dissimilar metal corrosion occurs, and the plating layer is corroded in the initial stage of dissimilar metal corrosion, but when a Zn-based corrosion product containing Mg is formed, the plating layer interface with the dissimilar metal is covered. Thus, the progress of corrosion is suppressed.
【００１１】さらにＭｇを含むＺｎ系腐食生成物の一部
は、切断加工等により発生する切断端面および溶接によ
り生じる非めっき部に流入し、端面の鉄の腐食を抑制す
る特筆すべき効果がある。またＭｇを添加することでめ
っき層が硬質になるため、傷付きにくく錆の起点となり
うる傷の発生が抑制される。これは、めっき層中に金属
間化合物Ｚｎ2Ｍｇが均一微細に分散しているためであ
り、このＺｎ2ＭｇはＺｎ／Ａｌ／Ｚｎ2Ｍｇ三元共晶凝
固組織の一成分である。Furthermore, a part of the Zn-based corrosion products containing Mg flows into the cut end face generated by cutting or the like and the non-plated portion generated by welding, and has a remarkable effect of suppressing corrosion of iron on the end face. . Further, the addition of Mg makes the plating layer hard, so that it is difficult to damage and the occurrence of scratches that can be a starting point of rust is suppressed. This is because the intermetallic compound Zn 2 Mg is uniformly and finely dispersed in the plating layer, and this Zn 2 Mg is a component of the ternary eutectic solidification structure of Zn / Al / Zn 2 Mg.
【００１２】めっき層中のＡｌ含有量：４〜２２重量％ めっき層中のＺｎ，ＭｇがＭｇを含むＺｎ系腐食生成物
を形成するのに対し、めっき層中のＡｌは固着性の極め
て強いＺｎ−Ａｌ系腐食生成物を形成し、耐食性向上に
寄与する。また、Ａｌをめっき層に含有させることでめ
っき層の凝固組織にＺｎ／Ａｌ／Ｚｎ2Ｍｇ三元共晶が
出現する。この三元共晶組織はＺｎ／Ｚｎ2Ｍｇ二元共
晶組織より組織が微細であるため、耐食性およびめっき
層硬さの観点からも三元共晶組織の方が好ましい。しか
し、Ａｌを２２重量％を超えて添加しても上記効果は飽
和し、Ａｌ含有量の増加とともにめっき金属の融点が上
昇してめっき浴を高温に保持することが必要となるので
製造性が悪くなる。Al content in the plating layer: 4 to 22% by weight Zn and Mg in the plating layer form Zn-based corrosion products containing Mg, whereas Al in the plating layer has extremely strong adhesion. It forms Zn-Al based corrosion products and contributes to improvement of corrosion resistance. Further, when Al is contained in the plating layer, Zn / Al / Zn 2 Mg ternary eutectic appears in the solidification structure of the plating layer. Since the ternary eutectic structure is finer than the Zn / Zn 2 Mg binary eutectic structure, the ternary eutectic structure is more preferable from the viewpoint of corrosion resistance and plating layer hardness. However, even if Al is added in excess of 22% by weight, the above effect is saturated, and the melting point of the plating metal increases with an increase in the Al content, so that it is necessary to maintain the plating bath at a high temperature. become worse.
【００１３】仮にめっき層中にＡｌが含まれないＺｎ−
Ｍｇ系合金の場合、Ｍｇ含有Ｚｎ系腐食生成物が流出す
ると、下地に固着性の強いＺｎ−Ａｌ系腐食生成物がな
いためにめっき層の腐食が急速に進行する。[0013] Suppose Zn- containing no Al in the plating layer.
In the case of the Mg-based alloy, when the Mg-containing Zn-based corrosion product flows out, the corrosion of the plating layer rapidly progresses because there is no Zn-Al-based corrosion product having strong adhesion to the base.
【００１４】本発明の溶融Ｚｎ−Ａｌ−Ｍｇ系合金めっ
きは、さらに必要に応じてＴｉ及びＢ、あるいは希土類
元素，Ｙ，Ｚｒ，Ｓｉから選ばれた易酸化性元素の少な
くとも１種を含むことができる。[0014] The hot-dip Zn-Al-Mg based alloy plating of the present invention may further contain at least one of Ti and B or an easily oxidizable element selected from rare earth elements, Y, Zr and Si, if necessary. Can be.
【００１５】めっき層中のＴｉ含有量：０．００１〜
０．１重量％、 めっき層中のＢ含有量：０．０００５〜０．０４５重量
％ Ｔｉ，Ｂを複合添加することにより表面外観を害するＺ
ｎ11Ｍｇ2相の生成を抑制し、めっき層中に晶出するＺ
ｎ−Ｍｇ系金属間化合物を実質的にＺｎ2Ｍｇのみにす
ることができる。[0015] Ti content in the plating layer: 0.001 to
0.1 wt%, B content in the plating layer: 0.0005 to 0.045 wt% Z which impairs the surface appearance by adding Ti and B in combination.
Z that suppresses generation of n 11 Mg 2 phase and crystallizes in the plating layer
The n-Mg based intermetallic compound can be substantially only Zn 2 Mg.
【００１６】具体的には、Ｔｉを０．００１重量％以上
含有させると効果的にＺｎ11Ｍｇ2相の生成を抑制する
ことができるが、Ｔｉが０．１重量％を超えるとめっき
層中にＴｉ−Ａｌ系析出物が成長し、めっき層に凹凸
（ブツ）が生じるため外観を損ねるようになる。また、
Ｂを０．０００５重量％以上含有させると効果的にＺｎ
11Ｍｇ2相の生成を抑制することができるが、Ｂが０．
０４５重量％を超えるとめっき層中にＴｉ−Ｂ系、Ａｌ
−Ｂ系析出物が成長し、めっき層に凹凸（ブツ）が生じ
るため外観を損ねるようになる。Specifically, when the content of Ti is 0.001% by weight or more, the formation of Zn 11 Mg 2 phase can be effectively suppressed. A Ti—Al-based precipitate grows on the surface of the plating layer, and irregularities are formed on the plating layer, thereby impairing the appearance. Also,
When B is contained in an amount of 0.0005% by weight or more, Zn
The formation of 11 Mg 2 phase can be suppressed,
If it exceeds 045% by weight, Ti-B-based, Al
-B-based precipitates grow, and irregularities (thumps) are formed on the plating layer, thereby impairing the appearance.
【００１７】めっき層中の易酸化性元素（希土類元素，
Ｙ，Ｚｒ，Ｓｉ）：少なくとも１種を０．００５〜２．
０重量％ ＡｌとＭｇの含有量が比較的多い本発明の溶融Ｚｎ−Ａ
ｌ−Ｍｇ系めっき鋼板（部材）においては、本鋼板に特
有の「めっき層の表面光沢劣化」という現象を抑制する
作用がある。「めっき層の表面光沢劣化」とは、製造直
後に美麗な金属光沢を有するめっき表面が、時間を経る
につれてねずみ色に変化する現象であり、表面外観の点
から好ましいことではない。このような変色現象は希土
類元素，Ｙ，Ｚｒ，Ｓｉの少なくとも１種を０．００５
重量％以上添加することで抑制することができる。しか
し、２．０重量％を超えて添加しても効果は飽和するの
で０．００５〜２．０重量％添加するのがよい。The oxidizable element (rare earth element,
Y, Zr, Si): at least one of 0.005 to 2.
0% by weight Al and Mg content of the molten Zn-A of the present invention is relatively high
The 1-Mg-based plated steel sheet (member) has an effect of suppressing the phenomenon of “deterioration of the surface gloss of the plating layer” which is unique to the present steel sheet. "Degradation of surface gloss of plating layer" is a phenomenon in which a plated surface having a beautiful metallic luster changes to a gray color as time passes immediately after production, and is not preferable in terms of surface appearance. Such a discoloration phenomenon is caused by adding at least one of rare earth elements, Y, Zr, and Si to 0.005.
It can be suppressed by adding more than weight%. However, the effect is saturated even if it is added in excess of 2.0% by weight, so it is preferable to add 0.005 to 2.0% by weight.
【００１８】また、めっき層のＡｌ含有率が高くなるほ
ど、めっき層と鋼素地の界面に局部的にＦｅ−Ａｌ金属
間化合物が生成することから、めっき鋼板を成形加工す
る際に部分的にめっき層が剥離することも懸念される
が、めっき層中にＳｉを微量含有させることでこの問題
は回避される。Further, the higher the Al content of the plating layer, the more locally the Fe-Al intermetallic compound is formed at the interface between the plating layer and the steel substrate. Although there is a concern that the layer may be peeled off, this problem can be avoided by including a small amount of Si in the plating layer.
【００１９】めっき鋼板（部材）には、クロメート系あ
るいはノンクロム系の化成処理を施して耐食性の向上や
塗装の密着性を向上させることができる。さらに数μｍ
程度の有機樹脂被覆を化成処理後に施せば耐食性、耐傷
付き性がさらに向上し、樹脂中に潤滑成分を含有させる
と各種部材への成形加工も容易になる。また、使用環境
によってめっき鋼板（部材）に塗装を施すことにより、
耐食性を高めたり、美麗な外観を得ることができる。The plated steel sheet (member) may be subjected to a chromate or non-chromium chemical conversion treatment to improve corrosion resistance and coating adhesion. Several μm
If a certain amount of organic resin coating is applied after the chemical conversion treatment, the corrosion resistance and the scratch resistance are further improved, and when a lubricating component is contained in the resin, molding into various members becomes easy. In addition, by coating the coated steel sheet (member) depending on the usage environment,
Corrosion resistance can be enhanced and a beautiful appearance can be obtained.
【００２０】本発明のめっき組成を有する溶融めっき鋼
板（部材）においては、めっき層が従来の溶融亜鉛めっ
き鋼板より硬いという特長がある。これは、めっき層中
に金属間化合物Ｚｎ2Ｍｇが分散しているためであり、
めっき層が硬質であることから、めっき鋼板を本発明の
各種土木用部材に加工する際、あるいは運搬時、施工時
において飛散物や接触物による傷が付きにくいという特
徴があるので、錆の起点となる傷の発生を抑制すること
もできる。The hot-dip galvanized steel sheet (member) having the plating composition of the present invention has a feature that the plating layer is harder than a conventional hot-dip galvanized steel sheet. This is because the intermetallic compound Zn 2 Mg is dispersed in the plating layer,
Since the plated layer is hard, it has the feature that it is hard to be damaged by flying or contacted objects during processing of plated steel sheet into various civil engineering members of the present invention, or during transportation, construction, so the starting point of rust Can be suppressed.
【００２１】土木用部材の用途によっては防眩性を配慮
することが必要となる場合もあるが、この場合にはめっ
き鋼板（部材）の製造過程にてめっき鋼板の粗度や化成
処理条件を適宜調整して、反射率や光沢を低減すること
も可能である。Depending on the use of the civil engineering member, it may be necessary to consider the antiglare property. In this case, the roughness of the plated steel sheet and the chemical conversion treatment conditions must be adjusted during the manufacturing process of the plated steel sheet (member). It is also possible to reduce the reflectance and gloss by making appropriate adjustments.
【００２２】[0022]
【発明の効果】以上のように、本発明のめっき組成を有
する土木用資材および土木用部材は、従来の溶融めっき
鋼板（部材）より優れた耐食性を有しているので、めっ
き付着量の低減やめっき鋼板への塗装処理の省略も可能
である。めっき層は硬く傷付きにくいので傷の発生に起
因する腐食の進行や異種金属接触による腐食の進行も抑
制できる。また、従来の後めっき法、電気亜鉛めっき法
により製造される土木用資材および土木用部材を代替す
ることが可能となるので、生産性が向上し、製造コスト
も低減できる。As described above, civil engineering materials and civil engineering members having the plating composition of the present invention have better corrosion resistance than conventional hot-dip coated steel sheets (members), and thus reduce the amount of plating adhesion. It is also possible to omit the coating process on the coated steel sheet. Since the plating layer is hard and hard to be damaged, the progress of corrosion due to the generation of scratches and the progress of corrosion due to contact with dissimilar metals can be suppressed. Further, since it becomes possible to substitute civil engineering materials and civil engineering members manufactured by the conventional post-plating method and electrogalvanizing method, productivity can be improved and manufacturing costs can be reduced.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4K027 AA15 AA22 AB02 AB05 AB06 AB09 AB44 AC82 AE03 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4K027 AA15 AA22 AB02 AB05 AB06 AB09 AB44 AC82 AE03
Claims (7)
％、残部Ｚｎおよび不可避的不純物からなる溶融Ｚｎ−
Ａｌ−Ｍｇ系合金めっきが施された耐食性に優れた土木
用資材。(1) Mg: 1 to 4% by weight, Al: 4 to 22% by weight, molten Zn- containing the balance of Zn and unavoidable impurities.
A material for civil engineering with excellent corrosion resistance coated with an Al-Mg alloy.
らにＴｉ：０．００１〜０．１重量％、Ｂ：０．０００
５〜０．０４５重量％を含有する請求項１記載の耐食性
に優れた土木用資材。2. The hot-dip Zn—Al—Mg alloy plating further comprises 0.001 to 0.1% by weight of Ti, and 0.000% of B.
The civil engineering material according to claim 1, which contains 5 to 0.045% by weight.
らに希土類元素，Ｙ，ＺｒまたはＳｉから選ばれた易酸
化性元素の少なくとも１種を０．００５〜２．０重量％
含有する請求項１又は２に記載の耐食性に優れた土木用
資材。3. The hot-dip Zn—Al—Mg alloy plating further comprises 0.005 to 2.0% by weight of at least one oxidizable element selected from rare earth elements, Y, Zr or Si.
The civil engineering material having excellent corrosion resistance according to claim 1 or 2.
％、残部Ｚｎおよび不可避的不純物からなる溶融Ｚｎ−
Ａｌ−Ｍｇ系合金めっきが施された耐食性に優れた土木
用部材。4. A molten Zn—containing Mg: 1 to 4% by weight, Al: 4 to 22% by weight, the balance being Zn and unavoidable impurities.
A civil engineering member with excellent corrosion resistance that has been plated with an Al-Mg alloy.
らにＴｉ：０．００１〜０．１重量％、Ｂ：０．０００
５〜０．０４５重量％を含有する請求項４記載の耐食性
に優れた土木用部材。5. The hot-dip Zn—Al—Mg alloy plating further comprises 0.001 to 0.1% by weight of Ti and 0.000% of B.
The civil engineering member excellent in corrosion resistance according to claim 4, which contains 5 to 0.045% by weight.
らに希土類元素，Ｙ，ＺｒまたはＳｉから選ばれた易酸
化性元素の少なくとも１種を０．００５〜２．０重量％
含有する請求項４又は５に記載の耐食性に優れた土木用
部材。6. The hot-dip Zn—Al—Mg alloy plating further comprises 0.005 to 2.0% by weight of at least one oxidizable element selected from rare earth elements, Y, Zr or Si.
The civil engineering member having excellent corrosion resistance according to claim 4.
板）用部材、補強用部材、橋梁用部材である請求項４〜
６に記載の耐食性に優れた土木用部材。7. The member for civil engineering is a member for piping, a member for fence (floor panel), a member for reinforcement, and a member for bridge.
6. The member for civil engineering having excellent corrosion resistance according to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002090795A JP2002356760A (en) | 2001-03-30 | 2002-03-28 | Material for civil-engineering and member for civil- engineering having excellent corrosion resistance |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001099585 | 2001-03-30 | ||
| JP2001-99585 | 2001-03-30 | ||
| JP2002090795A JP2002356760A (en) | 2001-03-30 | 2002-03-28 | Material for civil-engineering and member for civil- engineering having excellent corrosion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002356760A true JP2002356760A (en) | 2002-12-13 |
Family
ID=26612752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002090795A Withdrawn JP2002356760A (en) | 2001-03-30 | 2002-03-28 | Material for civil-engineering and member for civil- engineering having excellent corrosion resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002356760A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009057750A (en) * | 2007-08-31 | 2009-03-19 | Takara Kizai:Kk | High-tension steel grating |
| JP2010059771A (en) * | 2009-02-03 | 2010-03-18 | Takara Kizai:Kk | High-tensile steel grating |
| JP2010059602A (en) * | 2008-09-01 | 2010-03-18 | Takara Kizai:Kk | High-tensile steel grating |
| CN102140821A (en) * | 2010-01-29 | 2011-08-03 | 株式会社宝机材 | High-tension steel grating |
| JP2012107398A (en) * | 2010-11-15 | 2012-06-07 | Nisshin Steel Co Ltd | Reinforcement method of concrete structure |
| WO2024048665A1 (en) * | 2022-08-31 | 2024-03-07 | 日本製鉄株式会社 | Plated checkered steel plate |
-
2002
- 2002-03-28 JP JP2002090795A patent/JP2002356760A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009057750A (en) * | 2007-08-31 | 2009-03-19 | Takara Kizai:Kk | High-tension steel grating |
| JP2010059602A (en) * | 2008-09-01 | 2010-03-18 | Takara Kizai:Kk | High-tensile steel grating |
| JP4666404B2 (en) * | 2008-09-01 | 2011-04-06 | 株式会社宝機材 | High tensile steel grating |
| JP2010059771A (en) * | 2009-02-03 | 2010-03-18 | Takara Kizai:Kk | High-tensile steel grating |
| JP4666410B2 (en) * | 2009-02-03 | 2011-04-06 | 株式会社宝機材 | High tensile steel grating |
| CN102140821A (en) * | 2010-01-29 | 2011-08-03 | 株式会社宝机材 | High-tension steel grating |
| CN102140821B (en) * | 2010-01-29 | 2014-03-26 | 株式会社宝机材 | High-tension steel grating |
| JP2012107398A (en) * | 2010-11-15 | 2012-06-07 | Nisshin Steel Co Ltd | Reinforcement method of concrete structure |
| WO2024048665A1 (en) * | 2022-08-31 | 2024-03-07 | 日本製鉄株式会社 | Plated checkered steel plate |
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