JPS643936B2 - - Google Patents
Info
- Publication number
- JPS643936B2 JPS643936B2 JP9098482A JP9098482A JPS643936B2 JP S643936 B2 JPS643936 B2 JP S643936B2 JP 9098482 A JP9098482 A JP 9098482A JP 9098482 A JP9098482 A JP 9098482A JP S643936 B2 JPS643936 B2 JP S643936B2
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- corrosion resistance
- present
- zinc
- molten zinc
- 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
Links
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 13
- 239000011701 zinc Substances 0.000 claims description 13
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 11
- 230000007797 corrosion Effects 0.000 claims description 11
- 238000005260 corrosion Methods 0.000 claims description 11
- 229910052725 zinc Inorganic materials 0.000 claims description 11
- 239000000203 mixture Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Landscapes
- Coating With Molten Metal (AREA)
Description
本発明は溶融亜鉛に対し優れた耐食性を有する
合金に関する。
従来、耐溶融亜鉛合金として、次に示す組成の
ものが知られている。（以下の数値はすべて重量
％を示す）
The present invention relates to an alloy having excellent corrosion resistance against molten zinc. Conventionally, the following compositions are known as melt-dip resistant zinc alloys. (All numbers below indicate weight%)
【表】
（Al≦1.0、Ti≦1.0、Nb≦２、Ｗ≦５、Mo≦
５、Ｖ≦１）のうちから一つまたは一つ以上、
ａは、使用条件によつて耐食性に影響を与える
炭素を上記範囲より更に少なくしたり、炭素の作
用を消去するためにニオブ等を添加したりして一
般的に使用されている。
ｂ、ｃについては、ａ、ｄ、ｅ−１、ｅ−２よ
り耐溶融亜鉛腐食に優れているが、コバルトやタ
ングステンを多量に含むため非常に高価であるの
で、一部を除いて、ａ、ｄ、ｅ−１、ｅ−２が使
用されている。
しかしａも上記のように多量にニツケルを含む
ため、ｂ、ｃ程ではないが高価である。
ｄ、ｅ−１、ｅ−２は、ニツケルを殆んど含有
していないため安価であるが、ａと比較して耐溶
融亜鉛腐食性については多少良いか、同程度であ
る。従つて更に耐溶融亜鉛腐食性合金の開発が要
望されている。
本発明は、上記合金よりも耐溶融亜鉛腐食性に
優れ、しかもｄ、ｅ−１、ｅ−２と同程度に安価
な合金を供することを目的とする。
本発明はこの目的を達するために、特許請求の
範囲に示す合金を開発したものである。
本発明の合金組成を特許請求の範囲とした理由
は次の通りである。
Ｃ：0.05〜0.7％
耐溶融亜鉛腐食性から考えると出来るだけ低い
方が良いが、溶融亜鉛中で回転するような部品の
場合には、耐食性以外に耐摩耗性も要求される。
耐摩耗性の外、強度を出すために必要な元素であ
るが、この範囲を超えると脆くなるためこの範囲
内とする。
Si：0.5〜２％
Mn：0.5〜２％
鋳造する際、脱酸剤としての効果を有し、更に
溶湯の流動性も良くなり、健全な製品を作るのに
必要な元素である。しかし含有量が多くなるにつ
れて脆くなるので、この範囲とする。
Cr：５〜25％
Ｃと同様に、耐摩耗性及び強度を出すために必
要な元素である。この元素の添加効果は５％から
生ずるが、含有量が多くなるに従つて脆くなり、
実用に供するのに不可となるので25％を上限とす
る。
Cu：0.5〜４％
耐溶融亜鉛腐食性に特に効果のある元素であつ
て、本発明の目的達成のためには必要不可欠の元
素である。その添加効果は0.5％から急激に大と
なることを見出したものである。この点が本発明
の最も特徴とするところである。しかし添加量が
４％を超え多くなると耐食性及び機械的性質が急
激に悪化するため上限を４％とする。
次に本発明合金を従来合金と対比して説明す
る。
第１表に従来合金と本発明合金の成分組成を示
す。[Table] (Al≦1.0, Ti≦1.0, Nb≦2, W≦5, Mo≦
5. One or more of V≦1), a is to further reduce the amount of carbon that affects corrosion resistance depending on the usage conditions than the above range, or add niobium etc. to eliminate the effect of carbon. It is commonly used as an additive. Regarding b and c, they are better in molten zinc corrosion resistance than a, d, e-1, and e-2, but they are very expensive because they contain large amounts of cobalt and tungsten, so with some exceptions, a , d, e-1, and e-2 are used. However, since a also contains a large amount of nickel as mentioned above, it is expensive, although not as expensive as b and c. d, e-1, and e-2 are inexpensive because they contain almost no nickel, but their molten zinc corrosion resistance is slightly better or on the same level as that of a. Therefore, there is a need for the development of alloys that are further resistant to hot-dip zinc corrosion. The object of the present invention is to provide an alloy that has better molten zinc corrosion resistance than the above alloys and is as inexpensive as d, e-1, and e-2. In order to achieve this object, the present invention has developed the alloy shown in the claims. The reason why the alloy composition of the present invention is claimed is as follows. C: 0.05 to 0.7% Considering the corrosion resistance of molten zinc, it is better to have it as low as possible, but in the case of parts that rotate in molten zinc, wear resistance is required in addition to corrosion resistance.
This element is necessary for providing strength as well as wear resistance, but if it exceeds this range, it will become brittle, so it should be within this range. Si: 0.5-2% Mn: 0.5-2% During casting, it has the effect of acting as a deoxidizing agent, and also improves the fluidity of the molten metal, making it an element necessary for making healthy products. However, as the content increases, it becomes brittle, so it is set within this range. Cr: 5-25% Like C, this is an element necessary to provide wear resistance and strength. The effect of adding this element occurs from 5%, but as the content increases, it becomes brittle.
The upper limit is set at 25% since it is not suitable for practical use. Cu: 0.5-4% This is an element that is particularly effective in improving the corrosion resistance of molten zinc, and is an essential element for achieving the purpose of the present invention. It was discovered that the effect of its addition increases rapidly from 0.5%. This point is the most distinctive feature of the present invention. However, if the amount added exceeds 4%, the corrosion resistance and mechanical properties will deteriorate rapidly, so the upper limit is set at 4%. Next, the alloy of the present invention will be explained in comparison with a conventional alloy. Table 1 shows the compositions of the conventional alloy and the alloy of the present invention.
【表】
実施例 １
第１表に示した合金組成の各成分に配合溶解鋳
造し、更に切削加工して直径15mm長さ45mmの寸法
の試験片を作つた。次に実験炉に亜鉛10Kgを溶か
し、その中に上記試験片を吊し浸漬試験を行なつ
た。溶湯温度は460〜490℃に保つた。なお溶湯成
分は次の二種類とした。
(i) 純Zn
(ii) Zn＋0.2％Al
試験結果を第２表に示す。[Table] Example 1 Each component of the alloy composition shown in Table 1 was blended, melted and cast, and further cut to produce a test piece with dimensions of 15 mm in diameter and 45 mm in length. Next, 10 kg of zinc was dissolved in an experimental furnace, and the test piece was suspended therein for an immersion test. The molten metal temperature was kept at 460-490℃. The following two types of molten metal components were used. (i) Pure Zn (ii) Zn + 0.2% Al The test results are shown in Table 2.
【表】【table】
【表】
実施例 ２
溶融亜鉛メツキラインの亜鉛浴中で使用される
シンクロールは、従来合金Ｊ−１で主として製造
されているが、使用中に腐食あるいは肌荒れを起
し、一定周期毎に表面を削り直す作業が行なわれ
ている。この切削周期は約20日である。
本発明合金である第１表中のＨ−３の組成によ
り実際にロールを作成し、実用試験に供したとこ
ろ40日経過する迄、削り直しの必要はなかつた。[Table] Example 2 The sink rolls used in the zinc bath of the hot-dip galvanizing line are conventionally manufactured mainly from Alloy J-1, but they corrode or become rough during use, and the surface has to be cleaned at regular intervals. Restoration work is underway. This cutting cycle is about 20 days. When a roll was actually prepared using the composition of H-3 in Table 1, which is the alloy of the present invention, and subjected to a practical test, there was no need for resharpening until 40 days had passed.
Claims (1)
Mn0.5〜２％、Cr5〜25％、Cu0.5〜４％、残部
Feからなる溶融亜鉛に耐食性を有する合金。1% by weight, C0.05~0.7%, Si0.5~2%,
Mn0.5~2%, Cr5~25%, Cu0.5~4%, balance
An alloy consisting of Fe that has corrosion resistance to molten zinc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9098482A JPS58207357A (en) | 1982-05-28 | 1982-05-28 | Alloy with corrosion resistance to molten zinc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9098482A JPS58207357A (en) | 1982-05-28 | 1982-05-28 | Alloy with corrosion resistance to molten zinc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58207357A JPS58207357A (en) | 1983-12-02 |
| JPS643936B2 true JPS643936B2 (en) | 1989-01-24 |
Family
ID=14013772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9098482A Granted JPS58207357A (en) | 1982-05-28 | 1982-05-28 | Alloy with corrosion resistance to molten zinc |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58207357A (en) |
-
1982
- 1982-05-28 JP JP9098482A patent/JPS58207357A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58207357A (en) | 1983-12-02 |
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