JP3482249B2 - Method for producing metal carrier and metal foil made of heat-resistant alloy with good diffusion bonding property - Google Patents
Method for producing metal carrier and metal foil made of heat-resistant alloy with good diffusion bonding propertyInfo
- Publication number
- JP3482249B2 JP3482249B2 JP17999894A JP17999894A JP3482249B2 JP 3482249 B2 JP3482249 B2 JP 3482249B2 JP 17999894 A JP17999894 A JP 17999894A JP 17999894 A JP17999894 A JP 17999894A JP 3482249 B2 JP3482249 B2 JP 3482249B2
- Authority
- JP
- Japan
- Prior art keywords
- foil
- honeycomb body
- metal carrier
- outer cylinder
- metal
- 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
- 239000011888 foil Substances 0.000 title claims description 118
- 239000002184 metal Substances 0.000 title claims description 62
- 229910052751 metal Inorganic materials 0.000 title claims description 62
- 238000009792 diffusion process Methods 0.000 title claims description 37
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 229910045601 alloy Inorganic materials 0.000 title claims description 10
- 239000000956 alloy Substances 0.000 title claims description 10
- 230000003746 surface roughness Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 238000005304 joining Methods 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 2
- 229910002065 alloy metal Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 7
- 238000004804 winding Methods 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Catalysts (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車のエンジン
等の内燃機関から排出される排ガスを浄化するための触
媒コンバータ用メタル担体、特に拡散接合によるメタル
担体の製造方法およびこれに用いる金属箔に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal carrier for a catalytic converter for purifying exhaust gas discharged from an internal combustion engine such as an automobile engine, and more particularly to a method for manufacturing a metal carrier by diffusion bonding and a metal foil used for the method. It is a thing.
【０００２】従来より自動車の排気ガスを浄化するため
の触媒コンバータにはセラミックス担体が使用されてい
るが、耐熱性、低圧損および搭載性の点より、メタル担
体の使用量が最近増加している。Conventionally, a ceramic carrier has been used for a catalytic converter for purifying exhaust gas of an automobile, but the amount of the metal carrier used has recently increased due to heat resistance, low pressure loss and mountability. .
【０００３】メタル担体１は図１にその外観を示すが、
厚さ５０μｍ程度のステンレス鋼等の耐食、耐熱合金製
の金属箔の平箔２と、平箔をコルゲート加工した波箔３
とを重ねて巻回して、あるいは相互に積層してハニカム
体４を形成し、ハニカム体４を外筒５に収納して形成さ
れている。そしてこのメタル担体１は白金、パラジウ
ム、ロジウム等の排ガス浄化用の触媒を担持された後、
例えば自動車エンジンの排ガス系に搭載される。The appearance of the metal carrier 1 is shown in FIG.
Flat foil 2 of metal foil made of corrosion-resistant and heat-resistant alloy such as stainless steel having a thickness of about 50 μm, and corrugated foil 3 obtained by corrugating the flat foil.
Are stacked and wound or laminated on each other to form the honeycomb body 4, and the honeycomb body 4 is housed in the outer cylinder 5. After the metal carrier 1 carries a catalyst for purifying exhaust gas such as platinum, palladium, rhodium,
For example, it is installed in an exhaust gas system of an automobile engine.
【０００４】このメタル担体１は、エンジンからの高温
の排ガスによる激しい熱サイクル、あるいはエンジンか
らの激しい振動を受けるため耐久性が重要視される。そ
こで耐久性を確保するため、メタル担体１は従来からハ
ニカム体４の平箔２と波箔３との接合およびハニカム体
４と外筒５との接合は、ロウ付け、抵抗溶接あるいは拡
散接合で行われてきた。Since the metal carrier 1 is subjected to a severe heat cycle due to high temperature exhaust gas from the engine or a severe vibration from the engine, durability is important. Therefore, in order to secure durability, the metal carrier 1 has conventionally been joined by brazing, resistance welding or diffusion joining between the flat foil 2 and the corrugated foil 3 of the honeycomb body 4 and between the honeycomb body 4 and the outer cylinder 5. Has been done.
【０００５】ここでいう拡散接合とは、ロウ材等を特別
に用いることなく、高温高真空下あるいは非酸化性雰囲
気下に保持することにより接合する方法である。拡散接
合を実施する場合には、相互の接触部を接合する方法の
ため、特に平箔２と波箔３の接触部を確保することが重
要である。The diffusion bonding referred to here is a method of bonding by holding under high temperature and high vacuum or in a non-oxidizing atmosphere without using a brazing material or the like. When the diffusion bonding is performed, it is important to secure the contact portion between the flat foil 2 and the corrugated foil 3 because of the method of joining the mutual contact portions.
【０００６】従来の拡散接合において、平箔２と波箔３
の接触部を確保する方法として平箔２と波箔３間の接触
面圧を高めることが言及されてきた。すなわちハニカム
体４の形成時に、図２のように平箔２にバックテンショ
ンを矢印Ａの方向に掛けて、波箔３とともに矢印Ｂの方
向に巻取り軸６の周りに巻回して、ハニカム体４を硬く
巻き上げていた。更にそうしてできたハニカム体４を外
筒５に挿入後、高真空下あるいは非酸化性雰囲気下で高
温熱処理しメタル担体１を製作してきた。In the conventional diffusion bonding, the flat foil 2 and the corrugated foil 3 are used.
It has been mentioned that the contact surface pressure between the flat foil 2 and the corrugated foil 3 is increased as a method of ensuring the contact portion of the. That is, when the honeycomb body 4 is formed, back tension is applied to the flat foil 2 in the direction of arrow A as shown in FIG. 2, and the flat foil 2 is wound around the winding shaft 6 in the direction of arrow B together with the corrugated foil 3 to form the honeycomb body 4. 4 was rolled up tightly. Further, the honeycomb body 4 thus formed is inserted into the outer cylinder 5 and then heat-treated at high temperature in a high vacuum or in a non-oxidizing atmosphere to manufacture the metal carrier 1.
【０００７】しかし、ハニカム体４の拡散接合組立に計
算上必要な値のバックテンションを負荷すると、平箔２
と波箔３を巻取る際に巻取り軸が変形する、あるいはそ
のバックテンションが偏重することにより平箔２が破断
し、巻取り不能になるという問題が起きた。そこでバッ
クテンションを抑えて巻取るために、特開平２−１４７
４７号に示すようにハニカム体４を外筒５に挿入した
後、外筒５と共にダイスで縮径し外層部から接触面圧を
高める方法を試みた。しかし、縮径には変形を伴い一部
波箔３の座屈が発生し、無制限に縮径できるものではな
いため十分な効果が得られなかった。However, if a back tension of a value necessary for calculation is applied to the diffusion bonding assembly of the honeycomb body 4, the flat foil 2
When the corrugated foil 3 is wound, the winding shaft is deformed or the back tension is unbalanced, so that the flat foil 2 is broken and the winding becomes impossible. Therefore, in order to suppress the back tension and wind the film, Japanese Patent Application Laid-Open No. 2-147
After inserting the honeycomb body 4 into the outer cylinder 5 as shown in No. 47, an attempt was made to increase the contact surface pressure from the outer layer portion by reducing the diameter with the outer cylinder 5 with a die. However, the reduction in diameter causes some buckling of the corrugated foil 3 with deformation, and the diameter cannot be reduced infinitely, so that a sufficient effect cannot be obtained.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、平箔にバッ
クテンションを付与しながら、平箔をコルゲート加工し
た波箔と共に中心軸の周りに巻回しハニカム体を形成
し、同ハニカム体を外筒に挿入し、一体的に縮径した
後、真空あるいは非酸化性雰囲気下で拡散接合するメタ
ル担体の製造方法において、ハニカム体の平箔と波箔の
接合およびハニカム体と外筒の接合が不安定になる問題
を解決するものである。SUMMARY OF THE INVENTION According to the present invention, while applying back tension to a flat foil, the flat foil is wound around a central axis together with a corrugated corrugated corrugated foil to form a honeycomb body. In a method of manufacturing a metal carrier, which is inserted into a cylinder and integrally reduced in diameter, and then diffusion bonded in a vacuum or a non-oxidizing atmosphere, the flat foil and the corrugated foil of the honeycomb body are bonded and the honeycomb body and the outer cylinder are bonded. It solves the problem of instability.
【０００９】[0009]
【課題を解決するための手段】本発明の要旨は（１）耐
熱合金製外筒に収容されて触媒コンバータ用メタル担体
を構成するハニカム体を、耐熱合金製金属箔の平箔と波
箔を重ねて巻回すかあるいは交互に積層した後、拡散接
合して製造するにあたり、上記金属箔表面の平均粗さＲ
ａを拡散接合性の指標とし、該Ｒａが０．００１μｍ以
上０．２μｍ以下の平箔と波箔を拡散接合してハニカム
体を製造するメタル担体の製造方法、The gist of the present invention is (1) resistance
A metal carrier for a catalytic converter housed in a thermal alloy outer cylinder
The honeycomb body that makes up the
Diffusion contact after stacking foils or winding or alternately stacking
The average roughness R of the surface of the metal foil in the production in combination
a is used as an index of diffusion bonding property, and Ra is 0.001 μm or less.
Honeycomb made by diffusion-bonding flat foil of 0.2 μm or less and corrugated foil
A method of manufacturing a metal carrier for manufacturing a body ,
【００１０】（２）前記平箔と波箔との接触幅が３０μ
ｍ以上となる形状を有する波箔を用いる（１）記載のメ
タル担体の製造方法、
（３）前記ハニカム体と耐熱合金製外筒を拡散接合する
にあたり、該外筒内面の粗さを、平均粗さＲａで０．０
０１μｍ以上０．２μｍ以下とする（１）又は（２）記
載のメタル担体の製造方法、
（４）前記ハニカム体を外筒に挿入し位置決めをした
後、外筒と共に縮径する（１）、（２）又は（３）記載
のメタル担体の製造方法、
（５）拡散接合されてメタル担体のハニカム体を構成す
る耐熱合金製金属箔であって、表面粗さを該金属箔の拡
散接合性の指標とした箔表面の平均粗さＲａで０．００
１μｍ以上０．２μｍ以下とする拡散接合性の良好な耐
熱合金製金属箔、にある。(2) The contact width between the flat foil and the corrugated foil is 30 μ
(1) The method for producing a metal carrier according to (1) , wherein a corrugated foil having a shape of m or more is used, (3) The honeycomb body and a heat-resistant alloy outer cylinder are diffusion bonded.
In this case, the roughness of the inner surface of the outer cylinder is 0.0 in terms of average roughness Ra.
(1) The method for producing a metal carrier according to (1) or (2), wherein the honeycomb body is inserted into an outer cylinder and positioned, and then the diameter is reduced together with the outer cylinder (1); (2) or the method of manufacturing a metal carrier according to (3), (5) diffusion bonding is performed to form a honeycomb body of the metal carrier.
A metal foil made of a heat-resistant alloy that has a surface roughness
The average roughness Ra of the foil surface, which is an index of the diffuse bondability, is 0.00
Good resistance to diffusion bonding with a thickness of 1 μm or more and 0.2 μm or less
It is in metal foil made of thermal alloy .
【００１１】[0011]
【作用】触媒コンバータ用メタル担体で使用されるハニ
カム体を構成する厚さ５０μｍ程度の金属箔同士を拡散
接合する場合、あるいは前記ハニカム体と外筒を拡散接
合する場合には、接合すべき素材同士は互いに密着して
いなければならない。When the metal foils having a thickness of about 50 μm forming the honeycomb body used in the metal carrier for the catalytic converter are diffusion bonded or the honeycomb body and the outer cylinder are diffusion bonded, the materials to be bonded. The two must be in close contact with each other.
【００１２】一般に、拡散接合においては、接合すべき
材料に加熱接合中も終始面圧が加わるように加圧装置あ
るいはウェイトが使用される。しかしながら、メタル担
体の場合は、その構造の特異性にもとづき外部から面圧
を付与することができず、ハニカム体を形成するために
金属箔同士を巻回すときに平箔にかける限られた張力の
バックテンションあるいはハニカム体を外筒に挿入した
後の縮径により得られる限られた面圧のもとで拡散接合
を実施する必要がある。Generally, in diffusion bonding, a pressurizing device or weight is used so that the surface pressure is applied to the materials to be bonded during heating and bonding. However, in the case of a metal carrier, surface pressure cannot be applied from the outside based on the peculiarity of its structure, and the limited tension applied to the flat foil when the metal foils are wound to form a honeycomb body. It is necessary to carry out diffusion bonding under the limited surface pressure obtained by the back tension or the diameter reduction after inserting the honeycomb body into the outer cylinder.
【００１３】同一面圧のもとで拡散接合性を向上させる
方法を探索した結果、ハニカム体の拡散接合組立におい
て平箔および波箔の表面粗さを小さくすることが有効で
あることを発見した。実験結果によると平箔および波箔
の平均粗さ（Ｒａ）が０．００１μｍ以上０．２μｍ以
下で極めて容易に良好な拡散接合部が得られた。尚、金
属箔の平均粗さの下限は０．００１μｍが好ましい。そ
の理由はそれ以上平滑にしても拡散接合性に与える影響
は飽和するからである。更に、外筒内面の平均粗さ（Ｒ
ａ）が０．００１μｍ以上０．２μｍ以下のとき、ハニ
カム体と外筒材の拡散接合が容易に進行することを確認
した。又、本発明の平箔および波箔の表面粗さを前記の
範囲にするとともに、波箔の形状を例えば台形波箔の如
く、平箔と波箔の接触幅を３０μｍ以上とすると、拡散
接合性がより向上して好ましい。As a result of searching for a method for improving the diffusion bonding property under the same surface pressure, it was found that it is effective to reduce the surface roughness of the flat foil and the corrugated foil in the diffusion bonding assembly of the honeycomb body. . According to the experimental results, the average roughness (Ra) of the flat foil and the corrugated foil was 0.001 μm or more and 0.2 μm or less, and it was extremely easy to obtain a good diffusion bonded portion. The lower limit of the average roughness of the metal foil is preferably 0.001 μm. The reason is that the effect on the diffusion bondability will be saturated even if it is smoothed further. Furthermore, the average roughness (R
It was confirmed that when a) is 0.001 μm or more and 0.2 μm or less, diffusion bonding of the honeycomb body and the outer cylinder material easily proceeds. Further, when the surface roughness of the flat foil and the corrugated foil of the present invention is within the above range and the shape of the corrugated foil is, for example, a trapezoidal corrugated foil, and the contact width between the flat foil and the corrugated foil is 30 μm or more, diffusion bonding is performed. The property is further improved, which is preferable.
【００１４】[0014]
【実施例】従来のメタル担体製造方法と本発明による場
合とを、外径１００mm、長さ１００mmのメタル担体で比
較した。下記は従来法と本発明によるメタル担体の共通
仕様である。
平箔：フェライト系ステンレス箔、厚さ５０μｍ、幅１
００mm
波箔：フェライト系ステンレス箔、厚さ５０μｍ、波高
さ１．２５mm、ピッチ２．５４mm、幅１００mm
外筒：耐熱ステンレス鋼、板厚１．５mm、製品外径１０
０mm、長さ１００mmEXAMPLE A conventional metal carrier manufacturing method and the case of the present invention were compared with a metal carrier having an outer diameter of 100 mm and a length of 100 mm. The following are common specifications of the conventional method and the metal carrier according to the present invention. Flat foil: ferritic stainless steel foil, thickness 50 μm, width 1
00mm corrugated foil: ferritic stainless steel foil, thickness 50μm, wave height 1.25mm, pitch 2.54mm, width 100mm Outer cylinder: heat resistant stainless steel, plate thickness 1.5mm, product outer diameter 10
0 mm, length 100 mm
【００１５】（１）従来法によるメタル担体Ｉ
平箔と波箔：材質２０Ｃｒ−５Ａｌ、表面粗さ（Ｒａ）
０．３μｍ
平箔と波箔の接触幅：２００μｍ
外筒：材質１８Ｃｒ−８Ｎｉ、表面粗さ（Ｒａ）０．３
μｍ
平箔に１５kgf のバックテンションを加えながら、波箔
と共に巻回し、外径９８．５mmのハニカム体を作成し
た。そのハニカム体を外径１０２mm、板厚１．５mmの外
筒に挿入し、縮径機にて外径１００mmに縮径した。その
後、１２５０℃、１０-4torrの高温高真空下で９０分加
熱保持しメタル担体Ｉを製作した。(1) Conventional metal carrier I Flat foil and corrugated foil: Material 20Cr-5Al, surface roughness (Ra)
0.3 μm Contact width between flat foil and corrugated foil: 200 μm Outer cylinder: Material 18Cr-8Ni, surface roughness (Ra) 0.3
The honeycomb body was wound together with the corrugated foil while applying a back tension of 15 kgf to a μm flat foil to form a honeycomb body having an outer diameter of 98.5 mm. The honeycomb body was inserted into an outer cylinder having an outer diameter of 102 mm and a plate thickness of 1.5 mm, and the outer diameter was reduced to 100 mm by a diameter reducing machine. Then, the metal carrier I was manufactured by heating and holding at 1250 ° C. under high temperature and high vacuum of 10 −4 torr for 90 minutes.
【００１６】（２）本発明法によるメタル担体II
平箔と波箔：材質２０Ｃｒ−５Ａｌ、表面粗さ（Ｒａ）
０．２μｍ
平箔と波箔の接触幅：２００μｍ
外筒：材質１８Ｃｒ−８Ｎｉ、表面粗さ（Ｒａ）０．２
μｍ
平箔に１５kgf のバックテンションを加えながら、波箔
と共に巻回し、外径９８．５mmのハニカム体を作成し
た。そのハニカム体を外径１０２mm、板厚１．５mmの外
筒に挿入し、縮径機にて外径１００mmに縮径した。その
後、１２５０℃、１０-4torrの高温高真空下で９０分加
熱保持しメタル担体IIを製作した。(2) Metal carrier II according to the method of the present invention II Flat foil and corrugated foil: Material 20Cr-5Al, surface roughness (Ra)
0.2 μm Contact width between flat foil and corrugated foil: 200 μm Outer cylinder: Material 18Cr-8Ni, surface roughness (Ra) 0.2
The honeycomb body was wound together with the corrugated foil while applying a back tension of 15 kgf to a μm flat foil to form a honeycomb body having an outer diameter of 98.5 mm. The honeycomb body was inserted into an outer cylinder having an outer diameter of 102 mm and a plate thickness of 1.5 mm, and the outer diameter was reduced to 100 mm by a diameter reducing machine. Then, the metal carrier II was manufactured by heating and holding at 1250 ° C. under high temperature and high vacuum of 10 −4 torr for 90 minutes.
【００１７】（３）本発明法によるメタル担体III
平箔と波箔：材質２０Ｃｒ−５Ａｌ、表面粗さ（Ｒａ）
０．１μｍ
平箔と波箔の接触幅：２００μｍ
外筒：材質１８Ｃｒ−８Ｎｉ、表面粗さ（Ｒａ）０．１
μｍ
平箔に１５kgf のバックテンションを加えながら、波箔
と共に巻回し、外径９８．５mmのハニカム体を作成し
た。そのハニカム体を外径１０２mm、板厚１．５mmの外
筒に挿入し、縮径機にて外径１００mmに縮径した。その
後、１２５０℃、１０-4torrの高温高真空下で９０分加
熱保持しメタル担体III を製作した。(3) Metal carrier III according to the method of the present invention III Flat foil and corrugated foil: Material 20Cr-5Al, surface roughness (Ra)
0.1 μm Contact width between flat foil and corrugated foil: 200 μm Outer cylinder: Material 18Cr-8Ni, surface roughness (Ra) 0.1
The honeycomb body was wound together with the corrugated foil while applying a back tension of 15 kgf to a μm flat foil to form a honeycomb body having an outer diameter of 98.5 mm. The honeycomb body was inserted into an outer cylinder having an outer diameter of 102 mm and a plate thickness of 1.5 mm, and the outer diameter was reduced to 100 mm by a diameter reducing machine. Thereafter, the metal carrier III was manufactured by heating and holding at 1250 ° C. under a high temperature and high vacuum of 10 −4 torr for 90 minutes.
【００１８】（４）本発明法によるメタル担体IV 平箔と波箔：材質２０Ｃｒ−５Ａｌ、表面粗さ（Ｒａ）
０．０１μｍ 平箔と波箔の接触幅：２００μｍ 外筒：材質１８Ｃｒ−８Ｎｉ、表面粗さ（Ｒａ）０．０
５μｍ 平箔に１５kgf のバックテンションを加えながら、波箔
と共に巻回し、外径９８．５mmのハニカム体を作成し
た。そのハニカム体を外径１０２mm、板厚１．５mmの外
筒に挿入し、縮径機にて外径１００mmに縮径した。その
後、１２５０℃、１０ -4 torrの高温真空下で９０分加熱
保持しメタル担体IVを製作した。 (4) Metal carrier IV flat foil and corrugated foil according to the method of the present invention : Material 20Cr-5Al, surface roughness (Ra)
Contact width of 0.01 μm flat foil and corrugated foil: 200 μm Outer cylinder: Material 18Cr-8Ni, surface roughness (Ra) 0.0
Corrugated foil while applying back tension of 15 kgf to 5 μm flat foil
And wrap it together to make a honeycomb body with an outer diameter of 98.5 mm.
It was Outside the honeycomb body with an outer diameter of 102 mm and a plate thickness of 1.5 mm
It was inserted into a cylinder and reduced to an outer diameter of 100 mm with a diameter reducer. That
After that, it is heated at 1250 ° C and high temperature vacuum of 10 -4 torr for 90 minutes.
A metal carrier IV was produced by holding.
【００１９】（５）本発明法によるメタル担体Ｖ 平箔と波箔：材質２０Ｃｒ−５Ａｌ、表面粗さ（Ｒａ）
０．００１μｍ 平箔と波箔の接触幅：２００μｍ 外筒：材質１８Ｃｒ−８Ｎｉ、表面粗さ（Ｒａ）０．０
１μｍ 平箔に１５kgf のバックテンションを加えながら、波箔
と共に巻回し、外径９８．５mmのハニカム体を作成し
た。そのハニカム体を外径１０２mm、板厚１．５mmの外
筒に挿入し、縮径機にて外径１００mmに縮径した。その
後、１２５０℃、１０ -4 torrの高温高真空下で９０分加
熱保持しメタル担体Ｖを製作した。 (5) Metal carrier V flat foil and corrugated foil according to the method of the present invention : material 20Cr-5Al, surface roughness (Ra)
0.001 μm Flat foil and corrugated foil contact width: 200 μm Outer cylinder: Material 18Cr-8Ni, surface roughness (Ra) 0.0
While applying back tension of 15 kgf to 1 μm flat foil, corrugated foil
And wrap it together to make a honeycomb body with an outer diameter of 98.5 mm.
It was Outside the honeycomb body with an outer diameter of 102 mm and a plate thickness of 1.5 mm
It was inserted into a cylinder and reduced to an outer diameter of 100 mm with a diameter reducer. That
After that , 90 minutes under high temperature and high vacuum of 1250 ℃, 10 -4 torr
The metal carrier V was manufactured by holding the heat.
【００２０】（６）本発明方法によるメタル担体VI
平箔と波箔：材質２０Ｃｒ−５Ａｌ、表面粗さ（Ｒａ）
０．１μｍ
平箔と波箔の接触幅：３０μｍ
外筒：材質１８Ｃｒ−８Ｎｉ、表面粗さ（Ｒａ）０．１
μｍ
平箔に１５kgf のバックテンションを加えながら、波箔
と共に巻回し、外径９８．５mmのハニカム体を作成し
た。そのハニカム体を外径１０２mm、板厚１．５mmの外
筒に挿入し、縮径機にて外径１００mmに縮径した。その
後、１２５０℃、１０-4torrの高温高真空下で９０分加
熱保持しメタル担体VIを製作した。 (6) Metal carrier VI flat foil and corrugated foil according to the method of the present invention: material 20Cr-5Al, surface roughness (Ra)
0.1 μm Contact width of flat foil and corrugated foil: 30 μm Outer cylinder: Material 18Cr-8Ni, surface roughness (Ra) 0.1
The honeycomb body was wound together with the corrugated foil while applying a back tension of 15 kgf to a μm flat foil to form a honeycomb body having an outer diameter of 98.5 mm. The honeycomb body was inserted into an outer cylinder having an outer diameter of 102 mm and a plate thickness of 1.5 mm, and the outer diameter was reduced to 100 mm by a diameter reducing machine. Then, the metal carrier VI was manufactured by heating and holding at 1250 ° C. under high temperature and high vacuum of 10 −4 torr for 90 minutes.
【００２１】（７）従来法によるメタル担体VII
平箔と波箔：材質２０Ｃｒ−５Ａｌ、表面粗さ（Ｒａ）
０．１μｍ
平箔と波箔の接触幅：２０μｍ
外筒：材質１８Ｃｒ−８Ｎｉ、表面粗さ（Ｒａ）０．３
μｍ
平箔に１５kgf のバックテンションを加えながら、波箔
と共に巻回し、外径９８．５mmのハニカム体を作成し
た。そのハニカム体を外径１０２mm、板厚１．５mmの外
筒に挿入し、縮径機にて外径１００mmに縮径した。その
後、１２５０℃、１０-4torrの高温高真空下で９０分加
熱保持しメタル担体VII を製作した。 (7) Metal carrier VII flat foil and corrugated foil according to conventional method: material 20Cr-5Al, surface roughness (Ra)
0.1 μm Contact width between flat foil and corrugated foil: 20 μm Outer cylinder: Material 18Cr-8Ni, surface roughness (Ra) 0.3
The honeycomb body was wound together with the corrugated foil while applying a back tension of 15 kgf to a μm flat foil to form a honeycomb body having an outer diameter of 98.5 mm. The honeycomb body was inserted into an outer cylinder having an outer diameter of 102 mm and a plate thickness of 1.5 mm, and the outer diameter was reduced to 100 mm by a diameter reducing machine. Thereafter, the metal carrier VII was manufactured by heating and holding at 1250 ° C. under a high temperature and high vacuum of 10 −4 torr for 90 minutes.
【００２２】上記メタル担体Ｉ，II，III ，IV，Ｖを樹
脂に埋め込み研磨後、外周から２０層分のハニカム体の
接合率を調査した。その結果を表１に示す。さらにハニ
カム体と外筒の接合率を調査した。その結果を表２に示
す。従来法に対し本発明の方法によれば拡散接合を安定
して行うことができ、良好な拡散接合メタル担体を得る
ことができた。After the above metal carriers I, II, III, IV, and V were embedded in a resin and polished, the bonding rate of the honeycomb body of 20 layers from the outer periphery was investigated. The results are shown in Table 1. Furthermore, the bonding ratio between the honeycomb body and the outer cylinder was investigated. The results are shown in Table 2. According to the method of the present invention as compared with the conventional method, diffusion bonding can be stably performed, and a good diffusion bonding metal carrier can be obtained.
【００２３】上記メタル担体III ，VI，VII を切断し平
箔と波箔のピール試験を実行した（ピール試験は平箔と
波箔の接合率の簡易測定法であり、箔をペンチで引き剥
がし、接合点から剥れたものを不良、接合点以外の母材
部で剥がれたものを合格とした）。その結果、本発明の
III ，VIにおいては拡散接合部を残したまま平箔で破断
し、従来法のVII においては拡散接合部で破断した。従
来法に対し本発明の方法によれば拡散接合を安定して行
うことができ、良好な拡散接合メタル担体を得ることが
できた。The above metal carriers III, VI and VII were cut and a peel test was performed on the flat foil and the corrugated foil (the peel test is a simple measuring method of the bonding ratio between the flat foil and the corrugated foil, and the foil is peeled off with pliers. , Those that peeled off from the joining point were defective, and those that peeled off on the base metal part other than the joining point were regarded as acceptable). As a result, the
In III and VI , the flat foil was fractured while leaving the diffusion bond, while in VII of the conventional method, the diffusion bond was fractured. According to the method of the present invention as compared with the conventional method, diffusion bonding can be stably performed, and a good diffusion bonding metal carrier can be obtained.
【００２４】本発明による拡散接合メタル担体II，III
，IV，Ｖ，VIをガソリンエンジンの排気系に搭載し、
１サイクル：加熱９００℃×１０分＋冷却１５０℃×１
０分の耐久試験を９００サイクル実施したところ総て合
格した。Diffusion bonded metal carriers II, III according to the present invention
, IV, V, VI mounted on the exhaust system of a gasoline engine,
1 cycle: heating 900 ° C x 10 minutes + cooling 150 ° C x 1
When the 0-minute durability test was performed for 900 cycles, all passed.
【００２５】[0025]
【表１】 [Table 1]
【００２６】[0026]
【表２】 [Table 2]
【００２７】[0027]
【発明の効果】以上のように本発明によると、メタル担
体の平箔と波箔の拡散接合そして外筒とハニカム体の拡
散接合を良好に行うことができるので、実用に耐えるメ
タル担体を製作することができる。As described above, according to the present invention, it is possible to satisfactorily perform the diffusion bonding of the flat foil and the corrugated foil of the metal carrier and the diffusion bonding of the outer cylinder and the honeycomb body. can do.
【図１】メタル担体を示す斜視図である。FIG. 1 is a perspective view showing a metal carrier.
【図２】ハニカム体の巻取り状態を示す斜視図である。FIG. 2 is a perspective view showing a rolled-up state of the honeycomb body.
【符号の説明】 １…メタル担体 ２…平箔 ３…波箔 ４…ハニカム体 ５…外筒 ６…巻取り軸 Ａ…バックテンションの方向を示す矢印 Ｂ…ハニカム体巻取り方向を示す矢印[Explanation of symbols] 1 ... Metal carrier 2 flat foil 3 ... corrugated foil 4 ... Honeycomb body 5 ... Outer cylinder 6 ... Winding shaft A: Arrow indicating the direction of back tension B ... Arrow indicating the winding direction of the honeycomb body
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中川 俊和 愛知県東海市東海町５−３ 新日本製鐵 株式会社 名古屋製鐵所内 (56)参考文献 特開 平３−118839（ＪＰ，Ａ) 特開 平２−14747（ＪＰ，Ａ) 実開 平３−102237（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Toshikazu Nakagawa 5-3 Tokai-cho, Tokai-shi, Aichi Nippon Steel Nagoya Steel Works Co., Ltd. (56) Reference JP-A-3-118839 (JP, A) Japanese Unexamined Patent Publication No. 2-14747 (JP, A) Actual Kaihei 3-102237 (JP, U)
Claims (5)
ータ用メタル担体を構成するハニカム体を、耐熱合金製
金属箔の平箔と波箔を重ねて巻回すかあるいは交互に積
層した後、拡散接合して製造するにあたり、上記金属箔
表面の平均粗さＲａを拡散接合性の指標とし、該Ｒａが
０．００１μｍ以上０．２μｍ以下の平箔と波箔を拡散
接合してハニカム体を製造することを特徴とするメタル
担体の製造方法。1. A catalyst converter housed in a heat-resistant alloy outer cylinder.
Made of a heat-resistant alloy for the honeycomb body that constitutes the metal carrier for data
Flat metal foil and corrugated foil are stacked and wound or alternately stacked.
After layering and diffusion bonding, the above metal foil
The average roughness Ra of the surface is used as an index of the diffusion bonding property, and the Ra is
Diffuse flat foil and corrugated foil with a thickness of 0.001μm or more and 0.2μm or less
A method for manufacturing a metal carrier, which comprises manufacturing a honeycomb body by bonding .
上となる形状を有する波箔を用いることを特徴とする請
求項１記載のメタル担体の製造方法。2. The contact width between the flat foil and the corrugated foil is 30 μm or less.
The method for producing a metal carrier according to claim 1 , wherein a corrugated foil having the above shape is used.
接合するにあたり、該外筒内面の粗さを、平均粗さＲａ
で０．００１μｍ以上０．２μｍ以下とすることを特徴
とする請求項１又は２記載のメタル担体の製造方法。3. Diffusion of the honeycomb body and a heat-resistant alloy outer cylinder
Upon joining, the roughness of the inner surface of the outer cylinder is determined by the average roughness Ra.
3. The method for producing a metal carrier according to claim 1 , wherein the thickness is 0.001 μm or more and 0.2 μm or less .
をした後、外筒と共に縮径することを特徴とする請求項
１、２又は３記載のメタル担体の製造方法。 4. The method for manufacturing a metal carrier according to claim 1, wherein the honeycomb body is inserted into an outer cylinder, positioned, and then reduced in diameter together with the outer cylinder.
を構成する耐熱合金製金属箔であって、表面粗さを、該
金属箔の拡散接合性の指標とした箔表面の平均粗さＲａ
で、０．００１μｍ以上０．２μｍ以下とすることを特
徴とする拡散接合性の良好な耐熱合金製金属箔。5. A honeycomb body of a metal carrier which is diffusion-bonded.
A metal foil made of a heat-resistant alloy, which has a surface roughness of
Average roughness Ra of the foil surface as an index of the diffusion bondability of the metal foil
Therefore, it is specified that the thickness is 0.001 μm or more and 0.2 μm or less.
A heat-resistant alloy metal foil with good diffusion bonding properties .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17999894A JP3482249B2 (en) | 1994-08-01 | 1994-08-01 | Method for producing metal carrier and metal foil made of heat-resistant alloy with good diffusion bonding property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17999894A JP3482249B2 (en) | 1994-08-01 | 1994-08-01 | Method for producing metal carrier and metal foil made of heat-resistant alloy with good diffusion bonding property |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0838912A JPH0838912A (en) | 1996-02-13 |
| JP3482249B2 true JP3482249B2 (en) | 2003-12-22 |
Family
ID=16075674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17999894A Expired - Lifetime JP3482249B2 (en) | 1994-08-01 | 1994-08-01 | Method for producing metal carrier and metal foil made of heat-resistant alloy with good diffusion bonding property |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3482249B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3816974B2 (en) * | 1995-10-04 | 2006-08-30 | 新日本製鐵株式会社 | Diffusion bonded metal carrier for catalyst having strong bonding strength and method for producing the same |
| EP1293649B1 (en) | 1997-05-09 | 2004-06-16 | Nippon Steel Corporation | Foil made of a ferrite type heat resistant high alloy steel |
| JP3720973B2 (en) * | 1998-03-16 | 2005-11-30 | 新日本製鐵株式会社 | Diffusion bonded metal carrier and manufacturing method thereof |
| JP3350499B2 (en) * | 2000-01-20 | 2002-11-25 | 新日本製鐵株式会社 | Rough surface finish metal foil with good corrugation and catalyst carrier for exhaust gas purification |
-
1994
- 1994-08-01 JP JP17999894A patent/JP3482249B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0838912A (en) | 1996-02-13 |
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