JPS6342347A - Manufacture of fe-cr-al alloy excellent in peeling resistance of oxide scale - Google Patents
Manufacture of fe-cr-al alloy excellent in peeling resistance of oxide scaleInfo
- Publication number
- JPS6342347A JPS6342347A JP18338286A JP18338286A JPS6342347A JP S6342347 A JPS6342347 A JP S6342347A JP 18338286 A JP18338286 A JP 18338286A JP 18338286 A JP18338286 A JP 18338286A JP S6342347 A JPS6342347 A JP S6342347A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- alloy
- peeling resistance
- molten
- rapidly
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 title claims abstract description 8
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 4
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 abstract description 18
- 238000007254 oxidation reaction Methods 0.000 abstract description 18
- 229910045601 alloy Inorganic materials 0.000 abstract description 15
- 239000000956 alloy Substances 0.000 abstract description 15
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 14
- 230000003197 catalytic effect Effects 0.000 abstract description 7
- 229910052779 Neodymium Inorganic materials 0.000 abstract description 3
- 239000012298 atmosphere Substances 0.000 abstract description 3
- 230000001590 oxidative effect Effects 0.000 abstract description 3
- 238000005275 alloying Methods 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000011888 foil Substances 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 238000005097 cold rolling Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000005098 hot rolling Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910017112 Fe—C Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical class [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、酸化スケールの耐Ａｇｌ性に優れたＦｅ−Ｃ
ｒ−Ａｌ系合金を安価に安定に製造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is directed to Fe-C which has excellent Agl resistance of oxide scale.
The present invention relates to a method for stably manufacturing an r-Al alloy at low cost.
本合金は高温酸化性雰囲気下で激しい謹返し酸化を受け
る自動車排ガス浄化用触媒コンバータに好適なほか、燃
焼ガス排気系の機器、装置、暖房機部品などにも有用で
ある。This alloy is suitable for catalytic converters for purifying automobile exhaust gas, which undergo intense recirculation under high-temperature oxidizing atmospheres, and is also useful for combustion gas exhaust system equipment, equipment, heater parts, etc.
従来、自動車排ガス浄化用触媒コンバータには、コープ
（ｚライト（２ＭｇＯ−２ＡＩ１２０３・５ＳｔＯ２）
の押出焼成ハニカムにγ−アルミナ微粒子を触媒担体と
してコーティングした後、Ｐｔなどの触媒をつけたもの
が用いられている。Conventionally, catalytic converters for automobile exhaust gas purification include Coop (z-light (2MgO-2AI1203/5StO2)
An extruded fired honeycomb coated with γ-alumina fine particles as a catalyst carrier and then coated with a catalyst such as Pt is used.
特開昭５６−９６７２６号公報に示されているように、
このコーディエライト製ハニカムを耐酸化ステンレス箔
を組みたてて製作した金属製ハニカムにすると、コンバ
ータの小型化、エンジン性歳の向上など１種々の利点が
ある。前記引用公報では耐酸化ステンレス箔としてイツ
トリウム（Ｙ）を添加したＦｅ−Ｃｒ−Ａｌ系合金（Ｃ
ｒ：工５〜２５重量％、Ａｎ ： ３〜６重量％、Ｙ二
０．３〜１．Ｏ重量タロ）を提案しているが、Ｙが希少
金属であるため非常に高価であり、また供給量が不足す
る恐れがあり、一般の自動車に用いるのは経済性の点で
困難であった。As shown in Japanese Patent Application Laid-open No. 56-96726,
If this cordierite honeycomb is made into a metal honeycomb made by assembling oxidation-resistant stainless steel foil, there are various advantages such as miniaturization of the converter and improvement in engine performance. In the cited publication, an Fe-Cr-Al alloy (C
r: 5-25% by weight, An: 3-6% by weight, 0.3-1% by weight. However, since Y is a rare metal, it is very expensive and there is a risk of a shortage in supply, making it economically difficult to use it in general automobiles. .
これに対し、特開昭５８−１７７４３７号公報ではＣｒ
：８〜２５重量％、Ａｉ：３〜８重量％、全希土類元素
が０．０６重量％までで、０．００２〜０．０５重量％
のＣｅ、Ｌａ、Ｎｄなどを添加した合金（以下これをＦ
ｅ−Ｃｒ−ＡｆＬ−ＲＥＭ合金と呼ぶ）の使用を提案し
ている。これは希土類元素の添加によってスケールの剥
離を防いだＦｅ−Ｃｒ−Ａｌ系合金で、電熱線などには
古くから用いられていたものである。On the other hand, in Japanese Patent Application Laid-open No. 58-177437, Cr
: 8-25% by weight, Ai: 3-8% by weight, total rare earth elements up to 0.06% by weight, 0.002-0.05% by weight
An alloy to which Ce, La, Nd, etc. are added (hereinafter referred to as F
proposed the use of e-Cr-AfL-REM alloy). This is a Fe-Cr-Al alloy that prevents scale exfoliation by adding rare earth elements, and has been used in heating wires and the like for a long time.
このようなＦｅ−Ｃｒ−Ａｎ−ＲＥＭ系合金は、一般用
途では十分な酸化スケールの耐剥離性を持っているが、
自動車の排気ガス浄化用触媒コンバータのように発進、
加速、停止のたびに過酷な高温繰返し酸化と激しい振動
を受ける場合、酸化スケールが剥離してしまう。Such Fe-Cr-An-REM alloys have sufficient oxide scale peeling resistance for general purposes, but
Starts like a catalytic converter for purifying automobile exhaust gas,
If the vehicle is subjected to repeated oxidation at high temperatures and violent vibrations each time it accelerates or stops, the oxide scale will peel off.
前述のように触媒コンバータは箔の上に触媒をコーティ
ングした構造のため、酸化スケールの剥離は排ガス浄化
住方の低下を招く、またＦｅ−Ｃｒ−Ａｌ系合金は靭性
が低く冷間圧延に多大の費用がかかり、その箔は高価な
ものとなっている。As mentioned above, the catalytic converter has a structure in which the catalyst is coated on foil, so the peeling of oxide scale leads to a decrease in exhaust gas purification.Furthermore, Fe-Cr-Al alloys have low toughness and require a lot of effort during cold rolling. The foil is expensive.
本発明者はＦｅ−Ｃｒ−Ａ交合金で、特に板厚が５０島
ｍ程度の箔の場合、スケールの耐剥離性および耐酸化性
を向上させるには、ＲＥＭの大量添加が有効であること
を見出した。しかしながら０．０６重量％を超えるＲＥ
Ｍを添加すると、熱間圧延で割れが発生し、健全なホッ
トコイルを得ることが不可部であるという問題があった
。The present inventor has discovered that adding a large amount of REM is effective in improving scale peeling resistance and oxidation resistance in Fe-Cr-A alloys, especially in the case of foils with a plate thickness of about 50 m. I found out. However, RE exceeding 0.06% by weight
When M is added, cracks occur during hot rolling, making it impossible to obtain a sound hot coil.
本発明はかかるＦｅ−Ｃｒ−Ａ見合金に大量のＲＥＭを
添加した極薄鋼板の製造を可使ならしめる技術を提供す
ることを目的とする。The object of the present invention is to provide a technology that enables the production of ultra-thin steel sheets by adding a large amount of REM to such Fe-Cr-A alloys.
本発明は、０．０６重量％〜０．３０重量％の希土類元
素を含むＦｅ−Ｃｒ−Ａｌ１溶鋼を移動冷却体上に噴出
して冷却凝固させて薄帯とすることにより、酸化スケー
ルの耐剥離性に優れたＦｅ−Ｃｒ−Ａ１系合金を安定的
に製造するものである。The present invention achieves oxidation scale resistance by jetting Fe-Cr-Al1 molten steel containing 0.06% to 0.30% by weight of rare earth elements onto a moving cooling body and cooling and solidifying it into a thin ribbon. The purpose is to stably produce a Fe-Cr-A1 alloy with excellent peelability.
本発明の冷却薄帯製造工程は１通常の工程、すなわち鋼
塊を熱延し、さらに冷延する方法と比較して、熱延工程
を省略した上、冷延工程を短縮化しているので、加工工
程中の割れの問題がなく、安価なＦｅ−Ｃｒ−Ａ文治を
製造することができる。The cooling ribbon manufacturing process of the present invention omits the hot rolling process and shortens the cold rolling process, compared to the conventional process of hot rolling a steel ingot and then cold rolling it. There is no problem of cracking during the processing process, and inexpensive Fe-Cr-A Bunji can be manufactured.
次に本発明合金における各成分の含有量の限定理由を述
べる。Next, the reason for limiting the content of each component in the alloy of the present invention will be described.
■ Ｃ：
Ｃは靭性を低下させ、冷間圧延性、加工性を悪化させる
ので０．０３重量％以下にする必要がある。(2) C: Since C reduces toughness and worsens cold rollability and workability, it is necessary to limit the content to 0.03% by weight or less.
■ Ｓｉ：
耐酸化性向上に有効であるが冷間加工性を低下させるの
で１．５重量％以下とした。■Si: Effective for improving oxidation resistance, but since it reduces cold workability, the content was set to 1.5% by weight or less.
■ Ｃｒ：
１０重量％未満では耐酸化性が確保できず、２５重量％
以上では急冷凝固時ノズルが詰りやすくなるため１０〜
２５重量％とじた６■ Ａｉ ：
３．５重量％未満では耐酸化性が確保できず、希土類元
素をＯ，ＯＳ重量％以上含む場合は８重量％まで十分な
耐剥離性があり、８重量％を超えるＡｎ添加は加工性を
下げるだけなので３．５〜８重量％とじた。■ Cr: If it is less than 10% by weight, oxidation resistance cannot be ensured, and if it is less than 25% by weight.
If above, the nozzle will be easily clogged during rapid solidification, so 10~
25% by weight 6 ■ Ai: If less than 3.5% by weight, oxidation resistance cannot be ensured, but if rare earth elements are contained at 8% by weight or more, sufficient peeling resistance is achieved up to 8% by weight. Since addition of more than 3.5% to 8% by weight of An only lowers workability.
■ 希土類元素（Ｃｅ、Ｌａ、Ｐｒ、Ｎｄ）：ＡＭが８
重量％以下の場合、希土類元素の合計量が０．０６重量
％未満では厚さ５０Ｂｍ程度の箔での酸化スケールの耐
剥離性を確保することができず、０．３０重量％を超え
て添加しても効果は変わらず、高価になるだけなので０
．０６重量％以上０．３０重量％以下とした。■ Rare earth elements (Ce, La, Pr, Nd): AM is 8
If the total amount of rare earth elements is less than 0.06% by weight, it is not possible to ensure peeling resistance of oxide scale on a foil with a thickness of about 50 Bm, and if the total amount of rare earth elements is less than 0.06% by weight, Even if you do, the effect will not change, it will only become more expensive, so 0
．． The content was 0.06% by weight or more and 0.30% by weight or less.
■ Ｔｉ：
以上の成分の他にＴｉを添加しても本発明の効果は同様
に発揮される。Ｔｉは炭化物となってＣを固定すること
と、凝固組織を微細化することにより靭性を向上させ、
冷間圧延、加工性を改善する。■Ti: Even if Ti is added in addition to the above-mentioned components, the effects of the present invention can be similarly exhibited. Ti improves toughness by turning into carbide and fixing C, and by refining the solidified structure.
Cold rolling improves workability.
その場合、Ｃｅ度の５倍以上添加しないと効果が現れな
いが、ｏ、ｉｏ重量％を超えて添加すると耐酸化性を低
下させるので、５×重量％Ｃ〜０．１０重量％とすれば
よい。In that case, the effect will not appear unless it is added at least 5 times the degree of Ce, but if it is added in excess of o,io wt%, the oxidation resistance will decrease, so if it is 5 x wt%C to 0.10 wt%. good.
本発明方法によりＦｅ−Ｃｒ−Ａ文系合金の薄帯を製造
し、製造性、耐酸化性、耐剥離性の試験を行った。A thin strip of Fe-Cr-A alloy was produced by the method of the present invention and tested for manufacturability, oxidation resistance, and peeling resistance.
第１表に本発明に規定した成分を有する実施例の合金と
、比較例の合金の化学成分（重量％）を示す、ここでＲ
ＥＭ本濃度とは希土類元素を鉄合金に添加する場合に一
般的に用いられるミツシュメタル（Ｃｅ：４５〜５５重
量％、Ｌａ：約２２〜３０重量％、Ｎｄ：１５〜１８重
量％、Ｐｒ：Ｏ〜５重量％、Ｆｅ：０．５〜３重量％で
Ｙは含まない）を添加した場合の（Ｃｅ＋Ｌａ＋Ｎｄ＋
Ｐｒ）濃度を示している。Table 1 shows the chemical components (wt%) of the alloys of Examples and Comparative Examples having the components specified in the present invention, where R
EM main concentration refers to Mitsushmetal (Ce: 45-55% by weight, La: approximately 22-30% by weight, Nd: 15-18% by weight, Pr: O), which is commonly used when adding rare earth elements to iron alloys. ~5% by weight, Fe: 0.5~3% by weight, Y not included) (Ce+La+Nd+
Pr) shows the concentration.
試料Ａ１〜Ａ３、試料Ｃ１−Ｃ２は、溶融した母合金を
アルゴン雰囲気中で、ロール周速１５ｍ／ ｓ ｅ ｃ
で回転する直径６００ｍｍの単ロールに噴射し、急冷凝
固させて得た、厚さ５０ｇｍ、幅１００ｍｍの試料を得
た。この内Ｓｉが１．７ｉｉ％と高い試料Ｃ１は幅方向
直角面げをすると割れ、ハニカム成形に必要な波板加工
ができないため１以後の試験は行わなかった。For samples A1 to A3 and samples C1 to C2, the molten master alloy was rolled at a peripheral speed of 15 m/sec in an argon atmosphere.
A sample having a thickness of 50 gm and a width of 100 mm was obtained by spraying the mixture onto a single roll having a diameter of 600 mm and rotating at a speed of 50 mm, and rapidly solidifying the sample. Among them, sample C1, which has a high Si content of 1.7ii%, cracked when faceted at a right angle to the width direction, and the corrugated sheet processing required for honeycomb formation could not be performed, so tests after 1 were not conducted.
試料８１−８３．試料ＤＩ−ＤＢは溶融した母合金をア
ルゴン雰囲気中でロール周速３ｍ／ｓｅｃで回転する直
径５５０ｍｍの双ロールに噴射し、急冷凝固させて厚さ
０．３ ｍ ｍ 、幅５５０ｍｍの銅帯を製作し、その
後冷間・温間圧延、焼鈍、脱スケールを行って得た厚さ
５０ｐｍの試料である。この内、Ｃの濃度が０．０４３
重量％と高い試料Ｄ５は温間圧延でも圧延中に割れたの
で、以後の試験は行わなかった。Samples 81-83. For sample DI-DB, a molten master alloy was injected into twin rolls with a diameter of 550 mm rotating at a peripheral speed of 3 m/sec in an argon atmosphere, and rapidly solidified to form a copper strip with a thickness of 0.3 mm and a width of 550 mm. This is a sample with a thickness of 50 pm obtained by fabricating and then cold/warm rolling, annealing, and descaling. Among these, the concentration of C is 0.043
Sample D5, which had a high weight %, cracked during rolling even during warm rolling, so further tests were not conducted.
以上の試料から板厚５０ＪＬｍ、幅２０ｍｍ、長さ３０
ｍｍの試験片を採取して、１１５０℃大気中雰囲気で酸
化試験を行った。From the above samples, the plate thickness is 50 JLm, the width is 20 mm, and the length is 30 JLm.
A test piece of mm was taken and subjected to an oxidation test at 1150° C. in the air.
その結果の一部を第１図に示す、Ａ文が３．２重量％と
低い試料Ｃ２、Ｃｒが９．２重量％と低い試料ＤＩ、Ｔ
ｉが０．２５重量％と高い試料Ｄ３は５０−１００時間
で完全に酸化し原形をとどめていない。Some of the results are shown in Figure 1, sample C2 with a low A content of 3.2% by weight, samples DI and T with a low Cr content of 9.2% by weight.
Sample D3 with a high i of 0.25% by weight was completely oxidized in 50-100 hours and did not retain its original shape.
次に同一形状の試験片を１１５０℃大気中雰囲気で３０
分間酸化させた後、１２分間急冷するのを１回として、
２００回の繰返し酸化を行った後、走査型電子顕微鏡で
酸化スケールの状態を検査した。実施例の鋼には酸化ス
ケールの剥離は全く見られなかったが、希土類元素が０
．０６重量％未満の試料Ｄ２、Ｄ４は酸化スケールが全
面的に剥離していた。Next, a test piece of the same shape was heated to 1150℃ in an atmosphere for 30 minutes.
After oxidizing for 1 minute, quenching for 12 minutes is considered as one time.
After oxidation was repeated 200 times, the state of the oxide scale was examined using a scanning electron microscope. No peeling of oxide scale was observed in the steel of the example, but the rare earth element content was 0.
．． In samples D2 and D4 containing less than 0.06% by weight, the oxide scale was completely peeled off.
以上の結果を総合して第１表中に合わせて評価したが１
本発明の範囲にあるＦｅ−Ｃｒ−ＡｆＬ系合金は本発明
の製造方法により容易に製造することができ、耐酸化性
、耐剥離性などの特性が優れていることは明白である。The above results were combined and evaluated in Table 1.
It is clear that the Fe-Cr-AfL alloy within the scope of the present invention can be easily produced by the production method of the present invention and has excellent properties such as oxidation resistance and peeling resistance.
なお、第１表中での評価の区分は以下の基準による。The evaluation classification in Table 1 is based on the following criteria.
製造性：
○：５０４ｍ厚まで製造後、ｒ＝＝０．２ｍｍで９０度
の曲げ加工ができる。Manufacturability: ○: After manufacturing to a thickness of 504 m, 90 degree bending can be performed at r = 0.2 mm.
Ｘ：５０ルｍ厚まで製造不可廓かまたは製造できても曲
げ加工ができない。X: It is impossible to manufacture up to a thickness of 50 lumens, or even if it can be manufactured, it cannot be bent.
耐酸化性：
○：５０ｇｍ厚の箔で１１５０℃×１４４時間大気中加
熱後の重量増加が１．５ ｍ ｇ ／ｃｍ’未満。Oxidation resistance: ○: Weight increase after heating in the air at 1150° C. for 144 hours with a 50 gm thick foil is less than 1.5 mg/cm'.
Ｘ：５０４ｍ厚の箔で１１５０℃Ｘ１４４時間大気中加
熱後の重量増加が１．５ ｍ ｇ ／ｃｒｒＩ″以上。X: Weight increase of 504 m thick foil after heating in air at 1150° C. for 144 hours is 1.5 mg/crrI″ or more.
耐剥離性：
０：５０ｐｍ厚の箔で１１５０℃大気中３０分間加熱後
１２分間急冷を１回として
２００回繰返した後酸化スケールの剥離がないもの。Peeling resistance: No peeling of oxide scale after heating 0:50 pm thick foil in air at 1150°C for 30 minutes followed by rapid cooling for 12 minutes 200 times.
Ｘ：５０ＪＬｍ厚の箔で１１５０℃大気中３０分間加熱
後１２分間急冷を１回として
２００回繰返したとき酸化スケールの君離があるもの。X: A foil with a thickness of 50 JLm that shows no oxidation scale when heated at 1150°C in the air for 30 minutes and then rapidly cooled for 12 minutes 200 times.
また、前述の特開昭５６−９６７２６号公報では特殊な
熱処理で表面に長さ＆ｕ−ｍのＡｌ２Ｏ３ウィスカーを
生成した北に、触媒のコーティングを行っている。本発
明鋼もこれと同一の熱処理を行った場合、良好なＡ文２
０３ウィスカーが生成するので、この製造方法による触
媒コンバータにも好適である。Further, in the above-mentioned Japanese Patent Application Laid-Open No. 56-96726, a catalyst is coated on the north side of the surface where Al2O3 whiskers having a length of &m are formed by special heat treatment. When the steel of the present invention is also subjected to the same heat treatment, a good A pattern 2 is obtained.
Since 03 whiskers are generated, this manufacturing method is also suitable for catalytic converters.
以上の実験結果が示すように、本発明鋼は、耐酸化性に
優れており、かつ安価であることから自動車の触媒コン
バータ用ステンレス箔に最適であり、自動車の公害対策
上におけるメリットは大きい、また他の過酷な繰返し酸
化を受ける用途にも有用である。しかして本発明方法に
より、このような優れた特性をもつ薄帯を極めて容易に
安定的に製造することが可能となった。As shown by the above experimental results, the steel of the present invention has excellent oxidation resistance and is inexpensive, making it ideal for stainless steel foil for automobile catalytic converters, and has great advantages in preventing automobile pollution. It is also useful in other applications that undergo severe repeated oxidation. However, the method of the present invention has made it possible to produce a ribbon having such excellent properties extremely easily and stably.
第１図は厚さ５０１Ｌｍの箔での酸化試験結果の例を示
すグラフである。FIG. 1 is a graph showing an example of the results of an oxidation test on a foil having a thickness of 501 Lm.
Claims (1)
．３０重量％以下 を含有する組成の溶鋼を、移動冷却体上に噴出して冷却
凝固させることを特徴とする酸化スケールの耐剥離性に
優れたＦｅ−Ｃｒ− Ａｌ系合金薄帯の製造方法。[Claims] 1 C: 0.03 wt% or less Si: 1.5 wt% or less Cr: 10 wt% or more and 25 wt% or less Al: 3.5 wt% or more and 8 wt% or less Ce, La, Pr , a total of 0.06% by weight or more of Nd0
．． A method for producing a Fe-Cr-Al alloy ribbon having excellent peeling resistance of oxide scale, characterized in that molten steel having a composition containing 30% by weight or less is jetted onto a moving cooling body and cooled and solidified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18338286A JPS6342347A (en) | 1986-08-06 | 1986-08-06 | Manufacture of fe-cr-al alloy excellent in peeling resistance of oxide scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18338286A JPS6342347A (en) | 1986-08-06 | 1986-08-06 | Manufacture of fe-cr-al alloy excellent in peeling resistance of oxide scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6342347A true JPS6342347A (en) | 1988-02-23 |
Family
ID=16134791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18338286A Pending JPS6342347A (en) | 1986-08-06 | 1986-08-06 | Manufacture of fe-cr-al alloy excellent in peeling resistance of oxide scale |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6342347A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02303605A (en) * | 1989-05-16 | 1990-12-17 | Nippon Steel Corp | Production of stainless steel foil for exhaust gas catalyst carrier of automobile |
| JPH03170642A (en) * | 1989-11-28 | 1991-07-24 | Nippon Steel Corp | Heat-resistant ferritic stainless steel foil excellent in acid resistance in combustion exhaust gas |
| JPH059664A (en) * | 1990-09-12 | 1993-01-19 | Kawasaki Steel Corp | Rapidly cooled fe-cr-al alloy foil having excellent oxidation resistance |
-
1986
- 1986-08-06 JP JP18338286A patent/JPS6342347A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02303605A (en) * | 1989-05-16 | 1990-12-17 | Nippon Steel Corp | Production of stainless steel foil for exhaust gas catalyst carrier of automobile |
| JPH03170642A (en) * | 1989-11-28 | 1991-07-24 | Nippon Steel Corp | Heat-resistant ferritic stainless steel foil excellent in acid resistance in combustion exhaust gas |
| JPH059664A (en) * | 1990-09-12 | 1993-01-19 | Kawasaki Steel Corp | Rapidly cooled fe-cr-al alloy foil having excellent oxidation resistance |
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