JPH03207847A - Highly corrosion resistant combinedly coated steel and its production - Google Patents
Highly corrosion resistant combinedly coated steel and its productionInfo
- Publication number
- JPH03207847A JPH03207847A JP2001276A JP127690A JPH03207847A JP H03207847 A JPH03207847 A JP H03207847A JP 2001276 A JP2001276 A JP 2001276A JP 127690 A JP127690 A JP 127690A JP H03207847 A JPH03207847 A JP H03207847A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- alloy
- steel material
- thermal spraying
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 238000005260 corrosion Methods 0.000 title claims abstract description 40
- 230000007797 corrosion Effects 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000007747 plating Methods 0.000 claims abstract description 31
- 238000007751 thermal spraying Methods 0.000 claims abstract description 24
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 51
- 239000002131 composite material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 22
- 239000010953 base metal Substances 0.000 abstract 1
- 239000011701 zinc Substances 0.000 description 29
- 239000010410 layer Substances 0.000 description 18
- 229910045601 alloy Inorganic materials 0.000 description 13
- 239000000956 alloy Substances 0.000 description 13
- 238000005507 spraying Methods 0.000 description 11
- 238000000576 coating method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 229910052725 zinc Inorganic materials 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 3
- 238000010828 elution Methods 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 229910018137 Al-Zn Inorganic materials 0.000 description 2
- 229910018573 Al—Zn Inorganic materials 0.000 description 2
- 229910001132 Ar alloy Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 229910018131 Al-Mn Inorganic materials 0.000 description 1
- -1 Al-Zr Chemical class 0.000 description 1
- 229910018461 Al—Mn Inorganic materials 0.000 description 1
- 229910018580 Al—Zr Inorganic materials 0.000 description 1
- 241000473391 Archosargus rhomboidalis Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 241000269821 Scombridae Species 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 235000020640 mackerel Nutrition 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、例えば鉄骨、橋梁材等のように、構造物、特
に海洋構造物等に使用するのに好適な鋼材であって、厳
しい腐食環境下における使用に耐える高耐食性複合被覆
鋼材およびその製造方法に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention is directed to a steel material suitable for use in structures, particularly marine structures, such as steel frames and bridge materials, and which is resistant to severe corrosion. The present invention relates to a highly corrosion-resistant composite coated steel material that can withstand use in environmental conditions, and a method for producing the same.
（従来の技術）
鋼材の防食方法としては、表面被覆法が最も手軽であり
、一般に広く使用されている。このような表面被覆法と
しては、大きく分けると、塗装法、メッキ法、および溶
射法がある。(Prior Art) As a corrosion prevention method for steel materials, the surface coating method is the simplest and generally widely used. Broadly speaking, such surface coating methods include painting methods, plating methods, and thermal spraying methods.
塗装法およびメッキ法は、最も普及している方法である
が、溶射法に比較して被覆層が薄く、構造物用鋼材のよ
うに屋外で使用されるために、極めて優れた耐食性が要
求される鋼材の防食方法としては耐食性が不足してしま
うという欠点がある。Painting and plating methods are the most popular methods, but the coating layer is thinner than that of thermal spraying, and because they are used outdoors like structural steel, extremely high corrosion resistance is required. However, as a corrosion prevention method for steel materials, there is a drawback that corrosion resistance is insufficient.
このため、例えば橋，梁のような大型構造物に使用する
鋼材の防食方法としては、溶射法が古くから行われてお
り、特にＡｔ２単独溶射法およびＺｎ単独溶射法がよく
用いられていた．
しかしながら、前記のような溶射を施された鋼材が特に
海洋構造物用の鋼材として使用される場合には、例えば
Ｚｎ単独溶射法により得た溶射被膜は、被膜の溶出速度
が大きいために、防食性に劣る．また、Ａｆ２単独溶射
法により得た溶射被膜は、Ｚｎに比較して被膜の溶出速
度は小さいが、溶射されたＡｉ２が母材のＰｅに対ｋて
電気化学的に責となるため、Ｚｎ単独溶射法により得た
溶射被膜にみられる犠牲防食効果がなくなり、鋼材表面
における疵部や切断面では鯖が生じやすくなる．
このため、Ａｌ単独溶射法およびＺｎ単独溶射法の両者
の特徴を生かすべく、今度はＡｌ−Ｚｎ合金を溶射する
方法も広く知られている。For this reason, thermal spraying has been used for a long time as a corrosion protection method for steel materials used in large structures such as bridges and beams, with At2 single thermal spraying and Zn single thermal spraying being particularly popular. However, when the thermally sprayed steel materials described above are used as steel materials for offshore structures, for example, the thermal sprayed coating obtained by the Zn-only thermal spraying method has a high elution rate, so it is difficult to prevent corrosion. Inferior in sex. In addition, although the elution rate of the coating obtained by the Af2-only thermal spraying method is lower than that of Zn, since the sprayed Ai2 is electrochemically responsible for the base material Pe, Zn alone The sacrificial corrosion protection effect seen in thermal spray coatings obtained by thermal spraying is lost, and mackerel is more likely to form on scratches and cut surfaces on the steel surface. Therefore, in order to take advantage of the characteristics of both the Al-only thermal spraying method and the Zn-only thermal spraying method, a method of thermally spraying an Al-Zn alloy is also widely known.
（発明が解決しようとする課題）
しかし、以上のような各種溶射法により得られる溶射被
膜は、一般にボーラスであり、このままでは耐食性の劣
化が避けられないことから、溶射の後処理として封孔処
理を行う必要がある。このため、塗装法およびメッキ法
に比べ、溶射法はコストが高くなり経済性に劣るという
欠点があった．特に、最近では、構造物の防食性の確保
のために、用いられる鋼材の補修に莫大な費用がかかり
、経済的な問題がクローズア・２プされてきたことから
、構造物用鋼材に対してメンテナンスフリーがユーザー
から強く要求されるようになってきた。(Problem to be Solved by the Invention) However, the sprayed coatings obtained by the various thermal spraying methods described above are generally in the form of a bolus, and deterioration of corrosion resistance cannot be avoided if left as is, so sealing treatment is required as a post-treatment of thermal spraying. need to be done. For this reason, compared to painting and plating methods, thermal spraying has the disadvantage of being higher in cost and less economical. In particular, recently, in order to ensure the corrosion resistance of structures, it costs a huge amount to repair the steel materials used, and economic issues have been brought into close focus. Maintenance-free products are becoming increasingly demanded by users.
このため、従来のＺｎ単独溶射餌材、＾Ｑ単独溶射鋼材
あるいはＡｌ−Ｚｎ合金溶射綱材では、このような要求
に十分に対処できなかった。For this reason, conventional thermal sprayed feed materials containing only Zn, thermally sprayed steel materials containing only ^Q, or thermally sprayed steel materials made of Al-Zn alloy have not been able to satisfactorily meet these demands.
このため、特開昭５１−５２４２号公報には、Ｚｎめっ
き鋼板上にマンガンをベースとしＭｎ以外の金属または
酸化物を微粒子として含むめっき層を設けた２層めっき
鋼板が提案されているが、めっきを行うには大がかりの
設備が必要となり、特に加工後の鋼材、例えば厚板や形
鋼等の大型構造物への適用には大きな制約があり、実際
に適用することは困難である。For this reason, Japanese Patent Application Laid-open No. 51-5242 proposes a two-layer plated steel sheet in which a manganese-based plating layer containing fine particles of metals or oxides other than Mn is provided on a Zn-plated steel sheet. Plating requires large-scale equipment, and there are significant restrictions on its application to processed steel materials, such as large structures such as thick plates and shaped steel, making it difficult to actually apply it.
ここに、本発明の主たる目的は、従来の防食鋼材よりも
優れた高耐食性かつ長期安定性を有し、鋼材の形状に関
係なく簡単に被覆でき、かつ経済性にも優れた高耐食性
複合被覆鋼材およびその製造方法を提供することにある
。The main object of the present invention is to provide a highly corrosion-resistant composite coating that has superior corrosion resistance and long-term stability than conventional anti-corrosion steel materials, can be easily coated regardless of the shape of the steel material, and is also economically efficient. The purpose of the present invention is to provide steel materials and methods for manufacturing the same.
（課題を解決するための手段）
上記課題を解決するため、本発明者らは、種々研究を重
ねた結果、以下の事実を明らかにした。(Means for Solving the Problems) In order to solve the above problems, the present inventors have conducted various studies and have clarified the following facts.
（１） Ｚｎ系めっき鋼材の表面に、ＡＩ２またはＡ（
ｌ合金の溶射を行うと、Ｚｎめっきそのものより、数倍
耐食性は良くなること。(1) AI2 or A(
Thermal spraying of l-alloy provides several times better corrosion resistance than Zn plating itself.
（２） Ｚｎ系めっき鋼材を加熱しながら、Ｍまたは＾
Ｑ合金の溶射を行うと、ＺｎとＡｌとがよく混じりあっ
て、耐食性がさらに向上し、好適であること。(2) While heating the Zn-based plated steel material, apply M or ^
When the Q alloy is thermally sprayed, Zn and Al are mixed well, and the corrosion resistance is further improved, which is preferable.
（３） 八ＱまたはＡｌ合金の溶射によりＺｎ系めっき
被膜をすべて覆わなくともよく、被覆面積率で１０％以
上であれば、Ｚｎ系めっき鯛材の耐食性が著しく改善さ
れ、好適であること。(3) It is not necessary to completely cover the Zn-based plating film by thermal spraying with 8Q or Al alloy, and as long as the coverage area ratio is 10% or more, the corrosion resistance of the Zn-based plated sea bream material is significantly improved, which is preferable.
これらの知見に基づいて、本発明者らは、さらに鋭意研
究を重ねた結果、鋼材表面にＺｎ系めっき層を有し、さ
らにその上層としてＡｌまたはＡｌ合金の熔射被覆層を
有することで上記課題を解決できることを知見し、本発
明を完或するに至った．ここに、本発明の要旨とすると
ころは、調材表面にＺｎ系めっき層と、さらにその上に
八ＱまたはＭ合金溶射層とを形威したことを特徴とする
高耐食性複合被覆鋼材である．
上記の本発明においては、前記Ａｌ２またはＭ合金溶射
層の被覆面積率が１０％以上であることが好適である。Based on these findings, the present inventors conducted further intensive research and found that the above-mentioned results can be achieved by having a Zn-based plating layer on the surface of the steel material and further having a spray coating layer of Al or Al alloy as an upper layer. We discovered that the problem could be solved and completed the present invention. Here, the gist of the present invention is a highly corrosion-resistant composite coated steel material characterized by having a Zn-based plating layer on the surface of the prepared material, and further a sprayed 8Q or M alloy layer thereon. ．． In the present invention described above, it is preferable that the coverage area ratio of the Al2 or M alloy sprayed layer is 10% or more.
さらに、別の面からは、本発明は、鋼材にＺｎ系めっき
を施した後、この鋼材を１００〜４００゜Ｃに保持しな
がら、＾ＱまたはＡｌ合金の溶射を行うことを特徴とす
る高耐食性複合被覆鋼材の製造方法である．
本発明において、「高耐食性Ｊとは、例えば海洋構造物
用の鋼材として使用することができるような優れた耐食
性を意味し、具体的には、ＪＩＳ Ｚ２３７１に規定さ
れる塩水噴霧試験（５％ＮａＣＱ溶液、噴霧量：１〜２
ｓｊ！／ｈｒ ＸｐＨ：６．５〜７．２ 、温度３５℃
）による赤錆発生時間が、２００時間以上であることを
いう。Furthermore, from another aspect, the present invention provides a high-temperature coating characterized in that after applying Zn-based plating to a steel material, thermal spraying of ^Q or Al alloy is carried out while maintaining the steel material at 100 to 400°C. This is a method for manufacturing corrosion-resistant composite coated steel. In the present invention, "high corrosion resistance J" means excellent corrosion resistance that can be used, for example, as a steel material for offshore structures, and specifically, it refers to a salt spray test (5% NaCQ solution, spray amount: 1-2
sj! /hr XpH: 6.5-7.2, temperature 35℃
) means that the red rust generation time is 200 hours or more.
また、本発明においては、「綱材Ｊとは、特定゛のもの
にＩｌ限されないが、実用上の観点からは、例えば橋梁
等のような大型構造物に用いられる厚鋼板や形ＩＩ（例
えばＨ形鋼や溝形鋼等）や建材用ａｉｌｍ板等の場合、
特に利益的である。In addition, in the present invention, the "rope J" is not limited to a specific one, but from a practical point of view, for example, a thick steel plate used for large structures such as a bridge, etc. or a type II (e.g. H-shaped steel, channel steel, etc.) and ailm plates for building materials, etc.
Particularly profitable.
なお、第１図は、本発明にかかる高耐食性複合被覆鋼材
の構戚を模式的に示す略式断面図である。Note that FIG. 1 is a schematic cross-sectional view schematically showing the structure of the highly corrosion-resistant composite coated steel material according to the present invention.
第１図において、鋼材１の表面には、亜鉛系めっき層２
と、さらにその上に＾ＱまたはＡｌ合金溶射層３とが形
威されている．
（作用）
以下、本発明のｆｌｌ威と作用とについて説明する．本
発明におけるＺｎ系めっき層のめっき方法は、溶融浸漬
法、電気めっき法、真空蒸着法等いづれの方法でも良く
、何ら制限を必要としない。また、皮膜組戒についても
特に制限を必要とせず、純ＺｎまたはＺｎ合金（Ｚｎ−
Ｎｉ， Ｚｎ−Ｆｅ， Ｚｎ−Ａ２等）等のような、Ｚ
ｎ系めっきであればよい．
また、本発明においては、このようなＺｎ系めっき層の
上層として、ＡｌまたはＡｌ合金の溶射層を有する。こ
のＡｌまたはＡｌ合金の溶射被覆層についても特に制限
を要するものではなく、純Ｍまたは＾Ｑ合金（例えばへ
Ｑ Ｍｇ， Ｍ Ｍｎ、＾Ｑ−Ｔｉ， Ａｌ−Ｔａ
、Ａｌ−Ｚｒ等のような、Ａｌと他の金属との合金）で
あればよい。In FIG. 1, the surface of the steel material 1 is coated with a zinc-based plating layer 2.
Further, a ^Q or Al alloy sprayed layer 3 is formed thereon. (Operation) The full power and operation of the present invention will be explained below. The method of plating the Zn-based plating layer in the present invention may be any method such as a melt dipping method, an electroplating method, a vacuum evaporation method, etc., and does not require any limitations. Furthermore, there are no particular restrictions on the film composition, and pure Zn or Zn alloy (Zn-
Z, such as Ni, Zn-Fe, Zn-A2, etc.
Any n-based plating is sufficient. Further, in the present invention, a sprayed layer of Al or an Al alloy is provided as an upper layer of such a Zn-based plating layer. There are no particular restrictions on this sprayed coating layer of Al or Al alloy, and pure M or ^Q alloy (for example, ^Mg, M Mn, ^Q-Ti, Al-Ta)
, an alloy of Al and other metals such as Al-Zr, etc.).
以上のような構威の本発明にかかる高耐食性複合被覆鋼
材は、極めて耐食性に優れ、例えば、橋？のように、本
発明により鋼材の耐食性が向上する理由は以下に述べる
とおりである．一般に、Ｚｎ系めっき被膜は、前述のよ
うに、海水雰囲気中では被膜の溶出速度が大きい．この
Ｚｎ系めっき被膜の上層として、本発明のように＾Ｑま
たはＭ合金の溶射を行うことによりＡｌまたはＡｌ合金
溶射層を形成すると、海水雰囲気中ではＺｎとＡｌとが
溶出を開始するが、Ａｌｚｏｉの腐食生威物が鋼材の表
面を覆い、このＡｌｚＯ■とＺｎの犠牲防食作用との相
乗効果のため、鋼材の耐食性が向上するものと考えられ
る。The highly corrosion-resistant composite coated steel material according to the present invention having the above-described structure has extremely excellent corrosion resistance and can be used, for example, in bridges. The reason why the corrosion resistance of steel materials is improved by the present invention is as follows. Generally, as mentioned above, Zn-based plating films have a high elution rate in a seawater atmosphere. When an Al or Al alloy sprayed layer is formed as an upper layer of this Zn-based plating film by spraying ^Q or M alloy as in the present invention, Zn and Al start to elute in a seawater atmosphere. Corrosion products of Alzoi cover the surface of the steel material, and it is thought that the corrosion resistance of the steel material is improved due to the synergistic effect of this AlzO■ and the sacrificial anticorrosive action of Zn.
次に、このような本発明において、ＡＲまたはＡｌ合金
の溶射層の被覆面積率（溶射部面積／綱材表面積×１０
０〜）は、１０％以上であることが好適である．すなわ
ち、＾ＱまたはＡｌ合金の溶射層の被覆面積率で１０％
未満では、Ｚｎ系めっき層とＡｌまたはＡＩ２合金溶射
層との、前記のような相乗効果がなくなり、耐食性が劣
るおそれがある，したがって、溶射層の被覆面積率は、
１０％以上であることが好適である。Next, in the present invention, the coverage area ratio of the sprayed layer of AR or Al alloy (sprayed area area/wire surface area x 10
0~) is preferably 10% or more. In other words, the coverage area ratio of the sprayed layer of ^Q or Al alloy is 10%.
If the coating area ratio of the sprayed layer is less than
It is suitable that it is 10% or more.
次に、本発明にかかる高耐食性複合被覆鋼材の製造方法
について説明する。Next, a method for manufacturing a highly corrosion-resistant composite coated steel material according to the present invention will be explained.
まず、先に例示したような様々な手段により、鋼材の表
面にＺｎ系めっきを施す。めっき厚は、特に制限を要す
るものではないが、耐食性の観点から、５一以上が望ま
しい。First, Zn-based plating is applied to the surface of the steel material by various means as exemplified above. The plating thickness is not particularly limited, but from the viewpoint of corrosion resistance, a thickness of 5 mm or more is desirable.
次に、このＺｎ系めっきを施した鋼材の表面に、Ｍまた
はＡＩ２合金の溶射を行う。この際に、鋼材を１００゜
Ｃ以上４００゜Ｃ以下の表面温度となるように加熱して
おくことが好適である．すなわち、１００℃未満であれ
ば、溶射したＡｌまたはＭ合金がＺｒ系めっき皮膜に十
分に付着しない場合があるために、溶射歩留が低下する
とともに付着した溶射粒子が容易に剥離してしまうおそ
れがあるからである。Next, M or AI2 alloy is thermally sprayed onto the surface of the Zn-based plated steel material. At this time, it is preferable to heat the steel material to a surface temperature of 100°C or more and 400°C or less. In other words, if it is below 100°C, the sprayed Al or M alloy may not adhere sufficiently to the Zr-based plating film, which may reduce the spray yield and cause the attached spray particles to easily peel off. This is because there is.
また、４００℃を超えると、Ｚｎ系めっきが溶解・蒸発
してしまい、鋼材の耐食性が著しく劣るおそれがある．
したがって、ＡＲまたはＡｌ合金を溶射する際の母材の
加熱温度は、１００″Ｃ以上４００℃以下とすることが
好ましく、さらに好ましくは、１５０〜４００℃の範囲
である。Furthermore, if the temperature exceeds 400°C, the Zn-based plating will melt and evaporate, which may significantly deteriorate the corrosion resistance of the steel material.
Therefore, the heating temperature of the base material when thermally spraying AR or Al alloy is preferably 100"C or more and 400C or less, more preferably in the range of 150 to 400C.
母材を加熱しないで、ＡｌまたはＡｌ合金の溶射を行う
と、通常のＺｎ系めっき単体に比べれば耐食性は向上す
るが、大型構造物に使用する鋼材の耐食性としては不十
分な値となるおそれがあり、ＡｌまたはＡｌ合金の溶射
の際に、鋼材を１００℃以上４００゜Ｃ以下に加熱して
おくことにより、所望の高耐食性を鋼材に確実に付与す
ることができる。If Al or Al alloy is thermally sprayed without heating the base material, the corrosion resistance will be improved compared to ordinary Zn-based plating alone, but the corrosion resistance may be insufficient for steel materials used in large structures. By heating the steel material to 100°C or more and 400°C or less when spraying Al or Al alloy, the desired high corrosion resistance can be reliably imparted to the steel material.
さらに，八党またはＡｌ合金の溶射時に鋼材を１００〜
４００℃に加熱することにより、ＡｌまたはＡｌ合金が
Ｚｎ系めっきの表面に効率的に付着し、溶射歩留も向上
するのである．
さらに、本発明を実施例を用いて詳述するが、これはあ
くまでも本発明の例示であって、これにより本発明が限
定されるものではない。Furthermore, when spraying Hachito or Al alloy, the steel material is
By heating to 400°C, Al or Al alloy efficiently adheres to the surface of the Zn-based plating, and the thermal spraying yield also improves. Further, the present invention will be described in detail using Examples, but these are merely illustrative of the present invention and are not intended to limit the present invention.
（実施例〉
板厚１軸−の熱間圧延鋼材に溶融浸漬めっきにより第１
表に示すＺｎ系めっきを行い、次いでそのうえに鵠、＾
Ｑ−Ｍｇ合金をアーク溶射により、またＡｌ−Ｍｎ合金
をプラズマ溶射によりそれぞれ溶射して、試料ｂｔない
し試料ＮＣＬ２３を得た．また、Ａ（ｉまたは＾Ｑ合金
の熔射を行わずにＺｎ系めっきのままの試料を比較例（
試料Ｎα２４）とした．
なお、各試料の大きさは、１０（ｌ ｘｉｏｏ １１１
１であり、溶射条件は以下の通りであった。(Example) Hot-rolled steel material with a thickness of 1 axis was coated with the first plate by hot-dip plating.
Perform Zn-based plating as shown in the table, and then coat it with
A Q-Mg alloy was sprayed by arc spraying and an Al-Mn alloy was sprayed by plasma spraying to obtain samples bt to sample NCL23. In addition, a comparative example (
Sample Nα24) was used. In addition, the size of each sample is 10 (l xioo 111
1, and the thermal spraying conditions were as follows.
〈アーク 溶射〉 〈ブラ２７溶射〉溶射材料 ；
径１ ． ６ｍｓ＋ワイヤ 径４４〜１０５一粉末溶
射電流 ： ２００Ａ ４００Ａ溶射距
離 ： ３００ｍｓ＋ ３００ｌｗＩ！１
アトマイｉガス ： ＾ｒ
Ａｒ７トマイｉガス 圧カ ニ ４ｋｇ
／ｃｍ” ５０ １ ／分ノズル径
： ８ｍｍ ６問トーチ移動速度： ２
０ｙａ／分 ２０ｍ／分なお、耐食性については
、塩水噴霧試験（ＪＩＳ Ｚ２３７１）により行い、そ
の評価は各試料の赤錆発生時間により、２００時間以上
を合格とした。<Arc spraying><Bra 27 thermal spraying> Thermal spraying material;
Diameter 1. 6ms + wire diameter 44~105 - powder spraying current: 200A 400A spraying distance: 300ms + 300lwI! 1
Atomai gas: ^r
Ar7 tomai gas pressure crab 4kg
/cm” 50 1/min Nozzle diameter
: 8mm 6 questions Torch movement speed: 2
0 ya/min 20 m/min The corrosion resistance was evaluated by a salt spray test (JIS Z2371), and the evaluation was based on the red rust generation time of each sample, and a sample of 200 hours or more was considered to be passed.
結果を第１表に示す．
第
ｌ
表
第ｌ表から明らかなように、本発明にかかる試料は、耐
食性に極めて優れ、基準値である２００時間を大幅に越
えていることがわかる。The results are shown in Table 1. Table 1 As is clear from Table 1, the samples according to the present invention have extremely excellent corrosion resistance, and the corrosion resistance significantly exceeds the standard value of 200 hours.
（発明の効果）
本発明は、以上説明したように、鋼材に亜鉛系めっきを
施した後さらにＡｌまたは＾Ｑ合金の溶射を施すことに
より、経済性に優れた高耐食性複合被覆鋼材を提供する
ことができ、産業上益するところ大である．(Effects of the Invention) As explained above, the present invention provides highly economical and highly corrosion-resistant composite coated steel materials by applying zinc-based plating to steel materials and then thermal spraying with Al or ^Q alloy. This can be of great industrial benefit.
Claims (2)
ＡｌまたはＡｌ合金溶射層とを形成したことを特徴とす
る高耐食性複合被覆鋼材。(1) A highly corrosion-resistant composite coated steel material, characterized in that a Zn-based plating layer is formed on the surface of the steel material, and an Al or Al alloy sprayed layer is further formed thereon.
００〜４００℃に保持しながら、ＡｌまたはＡｌ合金の
溶射を行うことを特徴とする請求項１または請求項２記
載の高耐食性複合被覆鋼材の製造方法。(2) After applying Zn-based plating to the steel material, this steel material is
3. The method of manufacturing a highly corrosion-resistant composite coated steel material according to claim 1 or 2, wherein the thermal spraying of Al or an Al alloy is carried out while maintaining the temperature at 00 to 400°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001276A JPH03207847A (en) | 1990-01-08 | 1990-01-08 | Highly corrosion resistant combinedly coated steel and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001276A JPH03207847A (en) | 1990-01-08 | 1990-01-08 | Highly corrosion resistant combinedly coated steel and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03207847A true JPH03207847A (en) | 1991-09-11 |
Family
ID=11496938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001276A Pending JPH03207847A (en) | 1990-01-08 | 1990-01-08 | Highly corrosion resistant combinedly coated steel and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03207847A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993008315A1 (en) * | 1991-10-18 | 1993-04-29 | Harold Leroy Harford | A method of producing a wear-resistant coating |
| JP2007002328A (en) * | 2005-06-27 | 2007-01-11 | Nisshin Steel Co Ltd | Plated welded steel pipe excellent in corrosion resistance at weld zone and method for producing the same |
| JP2009083246A (en) * | 2007-09-28 | 2009-04-23 | Honda Motor Co Ltd | Coated metal product and manufacturing method thereof |
| JP2010018838A (en) * | 2008-07-10 | 2010-01-28 | Jfe Steel Corp | Steel structure coated with aluminum alloy, and corrosion protective coating method for the same |
-
1990
- 1990-01-08 JP JP2001276A patent/JPH03207847A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993008315A1 (en) * | 1991-10-18 | 1993-04-29 | Harold Leroy Harford | A method of producing a wear-resistant coating |
| JP2007002328A (en) * | 2005-06-27 | 2007-01-11 | Nisshin Steel Co Ltd | Plated welded steel pipe excellent in corrosion resistance at weld zone and method for producing the same |
| JP2009083246A (en) * | 2007-09-28 | 2009-04-23 | Honda Motor Co Ltd | Coated metal product and manufacturing method thereof |
| JP2010018838A (en) * | 2008-07-10 | 2010-01-28 | Jfe Steel Corp | Steel structure coated with aluminum alloy, and corrosion protective coating method for the same |
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