JP2612954B2 - Brown colored plating coating - Google Patents
Brown colored plating coatingInfo
- Publication number
- JP2612954B2 JP2612954B2 JP2131207A JP13120790A JP2612954B2 JP 2612954 B2 JP2612954 B2 JP 2612954B2 JP 2131207 A JP2131207 A JP 2131207A JP 13120790 A JP13120790 A JP 13120790A JP 2612954 B2 JP2612954 B2 JP 2612954B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- phase
- steel material
- plating
- brown colored
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 産業上の利用分野 鋼材に着色溶融亜鉛めっきを施す際に、めっき後皮膜
が鋼材から剥離せず、しかも皮膜にクラックが発生しな
い被覆物についての発明に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an invention relating to a coating material in which, when colored hot-dip galvanizing is applied to a steel material, a coating does not peel off from the steel material after plating and the coating does not crack.
発明の従来技術 従来、Mn等を添加した着色溶融亜鉛めっきにおいて、
好ましい茶色等の発色を得ていた。Conventional technology of the invention Conventionally, in the coloring hot-dip galvanizing to which Mn or the like is added,
A desirable color such as brown was obtained.
従来技術の問題点 しかしながら、例えば、Mn添加溶融亜鉛めっきの場
合、めっき後の冷却過程で皮膜が鋼材から剥離したり、
皮膜にクラックが発生する場合があり、不良率が高い等
の問題点とめっき皮膜の耐衝撃性が弱いと云う問題点が
あった。そこで発明者等は鋭意検討した結果以下の発明
をなした。However, for example, in the case of Mn-added hot-dip galvanizing, in the cooling process after plating, the coating peels off from the steel material,
Cracks may occur in the film, and there are problems such as a high defect rate and a problem that the impact resistance of the plating film is weak. Then, the inventors made the following inventions as a result of intensive studies.
発明の構成 本発明は、鋼材に施された、Mn,Fe,残部Znからなる亜
鉛合金めっき皮膜の表面層がη相であり、その下部相が
ζ相であることを特徴とする該亜鉛合金めっき皮膜にク
ラックがな茶色着色めっき被覆物に関する。The present invention provides the zinc alloy, wherein the surface layer of the zinc alloy plating film made of Mn, Fe and the balance Zn applied to the steel material is an η phase, and the lower phase is a ζ phase. The present invention relates to a brown colored plating coating having no crack in a plating film.
発明の具体的説明 本発明において、めっき皮膜の表面相は、η相で、各
該下部相は、ζ相であるこを要する。DETAILED DESCRIPTION OF THE INVENTION In the present invention, the surface phase of the plating film is required to be an η phase, and each of the lower phases is required to be a ζ phase.
上記の相は、鉄製品に亜鉛合金からなる着色めっきを
行う際に、めっき層として形形成される相である。ここ
で用いられる亜鉛は、蒸留亜鉛地金一種（純度98.5％以
上）、最純亜鉛地金（純度99.995％以上）並びに電気亜
鉛地金（純度99.99％以上）等である。さらに着色させ
るための添加元素として、Mn等が添加された合金を用い
る。The above-mentioned phase is a phase formed as a plating layer when performing coloring plating made of a zinc alloy on an iron product. The zinc used here is a kind of distilled zinc ingot (purity 98.5% or more), the purest zinc ingot (purity 99.995% or more), an electric zinc ingot (purity 99.99% or more), and the like. An alloy to which Mn or the like is added is used as an additional element for coloring.
ここでη相はMn0.3wt％、Fe0.003wt％残部亜鉛で、ζ
相はFeZn13を基本として、これに着色添加元素のMn等0.
2wt％を含むものである。Here, the η phase is Mn 0.3 wt%, Fe 0.003 wt% balance zinc,
Phase as a base a FeZn 13, Mn or the like of the coloring additive element to 0.
It contains 2 wt%.
発明者等は、上記の層からなる被覆であると、被覆に
クラックが生ぜず、しかも機械的な外力に対して強度が
あることを見出したものである。上記の相を得る方法と
しては、例えば以下の方法がある。The present inventors have found that a coating composed of the above-mentioned layers does not cause cracks in the coating and has strength against mechanical external force. As a method for obtaining the above phase, for example, there is the following method.
すなわち、亜鉛合金めっき浴温度を430〜480℃の範囲
にコントロールすることにより、めっき後の冷却過程及
び皮膜特性を向上させるための熱処理工程で、鋼材から
の皮膜の剥離及びクラックの発生を防止できる。430℃
より低い温度では、めっきが良好に出来ず、480℃より
浴温度が高いと鋼材からの皮膜の剥離及びクラックの発
生する確率が高くなる。このような現象は通常の溶融亜
鉛めっきでは観察されず、Mnが含有されている場合に始
めて起こる。これはMnが鉄と亜鉛の合金化を促進するた
めに起こるものである。すなわちMnが含有されている場
合480℃を超える浴温度では、通常存在するζ相（FeZn
13）が消滅し、鉄亜鉛の合金層は、殆どδ１層（FeZ
n7）となる。発明者等は、鋭意検討の結果、このことが
鋼材からな皮膜の剥離及びクラックの発生の原因である
ことを見出し、ζ相（FeZn13）が消滅しない浴温度範
囲、すなわち430〜480℃でめっきを行なうことが、鋼材
からの剥離及びクラックを防止できる条件であることを
見い出した。That is, by controlling the temperature of the zinc alloy plating bath in the range of 430 to 480 ° C., in the cooling process after plating and the heat treatment process for improving the film properties, the peeling of the film from the steel material and the occurrence of cracks can be prevented. . 430 ℃
If the temperature is lower, plating cannot be performed well. If the bath temperature is higher than 480 ° C., the probability of peeling and cracking of the coating from the steel material increases. Such a phenomenon is not observed in ordinary hot-dip galvanizing, and occurs only when Mn is contained. This is because Mn promotes the alloying of iron and zinc. That is, when Mn is contained, at a bath temperature exceeding 480 ° C., the normally present ζ phase (FeZn
13 ) disappears, and the iron-zinc alloy layer is almost δ 1 layer (FeZ
n 7 ). As a result of intensive studies, the present inventors have found that this is the cause of the peeling of the coating from the steel material and the occurrence of cracks, and in the bath temperature range where the ζ phase (FeZn 13 ) does not disappear, that is, 430 to 480 ° C. It has been found that plating is a condition that can prevent peeling and cracking from a steel material.
実施例１ 0.3重量％Mnを含有する亜鉛合金浴を460℃の温度に固
定し、鋼材を３分間浸漬後放冷した。このサンプルにつ
いて皮膜の鋼材からの剥離及び皮膜のクラックの有無と
皮膜組織を調べた。その結果表面相は、η相であり該下
部層は、ζ相であった。このため皮膜の鋼材からの剥離
及び皮膜のクラックの発生は観察されなかった。Example 1 A zinc alloy bath containing 0.3% by weight of Mn was fixed at a temperature of 460 ° C., a steel material was immersed for 3 minutes, and then allowed to cool. This sample was examined for the presence or absence of cracking of the coating from the steel material and the coating and the coating structure. As a result, the surface phase was an η phase and the lower layer was a ζ phase. For this reason, peeling of the coating from the steel material and generation of cracks in the coating were not observed.
実施例２ 0.2重量％Mnを含有する亜鉛合金浴を450℃の温度に固
定し、鋼材を３分間浸漬後、めっき皮膜の特性改善のた
めに500℃で10分間熱処理したその後放冷した。このサ
ンプルについて皮膜の鋼材からの剥離及び皮膜のクラッ
クの有無と皮膜組織を調べた。その結果表面相はη相で
あり、下部層は、ζ相であった。このため皮膜は、鋼材
からの剥離及びのクラックの発生は生じていなかった。Example 2 A zinc alloy bath containing 0.2% by weight of Mn was fixed at a temperature of 450 ° C., a steel material was immersed for 3 minutes, heat-treated at 500 ° C. for 10 minutes in order to improve the properties of the plating film, and then allowed to cool. This sample was examined for the presence or absence of cracking of the coating from the steel material and the coating and the coating structure. As a result, the surface phase was an η phase, and the lower layer was a ζ phase. Therefore, the coating did not peel off from the steel material and did not generate cracks.
比較例１ 0.3重量％Mnを含有する亜鉛合金浴を500℃の温度に固
定し、鋼材を３分間浸漬後放冷した。このサンプルにつ
いて皮膜の鋼材からの剥離及び皮膜のクラックの有無と
皮膜組織を調べた。その結果ζ相が観察されず、クラッ
クの発生が観察された。Comparative Example 1 A zinc alloy bath containing 0.3% by weight of Mn was fixed at a temperature of 500 ° C., a steel material was immersed for 3 minutes, and then allowed to cool. This sample was examined for the presence or absence of cracking of the coating from the steel material and the coating and the coating structure. As a result, no Δ phase was observed, and generation of cracks was observed.
発明の効果 本発明を実施することにより以下のような効果を有す
る。Effects of the Invention By implementing the present invention, the following effects can be obtained.
（１）溶融亜鉛めっきによる皮膜が、剥離及びクラック
を生じない好ましい皮膜を得ることができる。(1) It is possible to obtain a preferable coating which does not cause peeling and cracking of the coating by hot-dip galvanizing.
（２）Mn等を添加した溶融亜鉛めっきにより、茶色の強
固な皮膜を容易に得ることができる。(2) A strong brown film can be easily obtained by hot-dip galvanizing to which Mn or the like is added.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山本 泰然 東京都港区虎ノ門２丁目10番１号 日本 鉱業株式会社内 (56)参考文献 特公 昭50−28900（ＪＰ，Ｂ２) 特公 昭46−42007（ＪＰ，Ｂ１) ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yasuna Yamamoto 2-10-1 Toranomon, Minato-ku, Tokyo Japan Mining Co., Ltd. (56) References JP 50-28900 (JP, B2) JP 46 -42007 (JP, B1)
Claims (1)
鉛合金めっき皮膜の表面層がη相であり、その下部相が
ζ相であることを特徴とし、該、亜鉛合金めっき皮膜に
クラックがない茶色着色めっき被覆物。1. A zinc alloy plating film comprising Mn, Fe and the balance Zn, wherein a surface layer of a zinc alloy plating film applied to a steel material is an η phase and a lower phase thereof is a ζ phase. Brown colored plating coating with no cracks in the coating.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2131207A JP2612954B2 (en) | 1989-04-27 | 1990-05-23 | Brown colored plating coating |
| DE69025022T DE69025022T2 (en) | 1989-04-27 | 1990-10-11 | Colored coated article and process for its manufacture |
| EP90119534A EP0423624B1 (en) | 1989-04-27 | 1990-10-11 | Color-coated article and method for producing the same |
| KR1019900016617A KR930009988B1 (en) | 1989-04-27 | 1990-10-18 | Brown coated article and method for producing the same |
| AU86007/91A AU645616B2 (en) | 1989-04-27 | 1991-10-18 | Color-coated article and method for producing the same |
| US07/914,013 US5200276A (en) | 1989-04-27 | 1992-07-15 | Color-coated article and method for producing the same |
| US08/004,255 US5364478A (en) | 1989-04-27 | 1993-01-14 | Method for producing a color-coated article |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1105819A JPH07110962B2 (en) | 1989-04-27 | 1989-04-27 | Colored zinc powder, method for producing the same, and method for producing a colored product |
| JP2131207A JP2612954B2 (en) | 1989-04-27 | 1990-05-23 | Brown colored plating coating |
| AU86007/91A AU645616B2 (en) | 1989-04-27 | 1991-10-18 | Color-coated article and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0426745A JPH0426745A (en) | 1992-01-29 |
| JP2612954B2 true JP2612954B2 (en) | 1997-05-21 |
Family
ID=27156663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2131207A Expired - Lifetime JP2612954B2 (en) | 1989-04-27 | 1990-05-23 | Brown colored plating coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2612954B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5321679B2 (en) * | 1973-07-13 | 1978-07-04 |
-
1990
- 1990-05-23 JP JP2131207A patent/JP2612954B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0426745A (en) | 1992-01-29 |
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