JPH03234347A - Manufacture of joined pipe of al alloy and stainless steel - Google Patents
Manufacture of joined pipe of al alloy and stainless steelInfo
- Publication number
- JPH03234347A JPH03234347A JP3028390A JP3028390A JPH03234347A JP H03234347 A JPH03234347 A JP H03234347A JP 3028390 A JP3028390 A JP 3028390A JP 3028390 A JP3028390 A JP 3028390A JP H03234347 A JPH03234347 A JP H03234347A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- stainless steel
- alloy
- joined
- casting
- 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
- 239000010935 stainless steel Substances 0.000 title claims abstract description 53
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 48
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000005266 casting Methods 0.000 claims abstract description 15
- 238000005304 joining Methods 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 17
- 239000000956 alloy Substances 0.000 claims description 11
- 238000007747 plating Methods 0.000 claims description 9
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 abstract description 14
- 230000007547 defect Effects 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 3
- 238000007598 dipping method Methods 0.000 abstract 1
- 239000006104 solid solution Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000035939 shock Effects 0.000 description 5
- 239000010953 base metal Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910001020 Au alloy Inorganic materials 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000003353 gold alloy Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ステンレス鋼とＡｌ合金の拡散接合による接
合技術に係り、より詳しくは、ステンレス鋼パイプにＡ
ｌ合金を拡散接合によりパイプ状に接合させたステンレ
ス鋼とＡｌ合金の接合パイプの製造法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a joining technology by diffusion bonding between stainless steel and an Al alloy.
This invention relates to a method for manufacturing a stainless steel and Al alloy joined pipe in which L alloy is joined into a pipe shape by diffusion bonding.
（従来の技術及び解決しようとする課題）科学技術の進
歩発達に伴って、極高真空機器や極低温機器の利用活用
が多くなってきている。そして、このような特殊機器の
継手には、Ａｌ合金とステンレス鋼の接合継手が必要と
されている。(Conventional technology and problems to be solved) With the progress and development of science and technology, the use of extremely high vacuum equipment and cryogenic equipment is increasing. As a joint for such special equipment, a joint made of aluminum alloy and stainless steel is required.
従来、このようなＡｌ合金とステンレス鋼の接合継手は
、実用的には、爆着法によって製造されているのが一般
的である。Conventionally, such a joint between Al alloy and stainless steel has generally been practically manufactured by an explosion bonding method.
すなわち、Ａ１合金の原板材とステンレス鋼の原板材と
を板材同士の状態で爆着接合し、その後、接合されたク
ラツド材から所定の継手を削り出すという方法である。That is, this is a method in which an A1 alloy original sheet material and a stainless steel original sheet material are explosively bonded to each other in the state of the sheets, and then a predetermined joint is cut out from the joined clad material.
したがって、この爆着法により接合パイプを製造する場
合は、その接合原理及びプロセスから考えられるように
、極めてコスト高であり、素材の材料費からは考えられ
ないほど高額な接合パイプとなる。しかも、設備の規模
にもよるが、現状では最大径６００！１１１１．最長で
も２５０ｍｍの接合体が限度とされている。したがって
、パイプ径が７００ｍｍとか、パイプ長さが１０００＋
ｗｍとかのような大型の接合パイプは殆ど製造が不可能
とされている。更に、量産することは殆ど不可能である
。Therefore, when a jointed pipe is manufactured by this explosion bonding method, the cost is extremely high, as can be considered from the joining principle and process, and the jointed pipe becomes unimaginably expensive considering the material cost. Moreover, although it depends on the scale of the equipment, currently the maximum diameter is 600!1111. The maximum length of the joined body is 250 mm. Therefore, if the pipe diameter is 700mm or the pipe length is 1000+
It is said that it is almost impossible to manufacture large joint pipes such as wm. Moreover, mass production is almost impossible.
本発明は、上記従来技術の欠点を解消し、Ａｌ合金とス
テンレス鋼の高品質な接合パイプを極めて低コストで、
しかも大きさが限定されず、小型のものから大型のもの
まで製造できる新規な方法を提供するを目的とするもの
である。The present invention eliminates the drawbacks of the above-mentioned prior art, and produces a high-quality joined pipe of Al alloy and stainless steel at an extremely low cost.
Furthermore, the object is to provide a new method that is not limited in size and can manufacture small to large products.
（課題を解決するための手段）
本発明者は、ステンレス鋼とＡｌ合金という異種金属同
士を接合する手段としては種々の接合法があるが、接合
パイプのサイズを適宜変えても高品質な接合部が確保で
きる接合方法について鋭意研究を重ねた結果、ここに本
発明をなしたものである。(Means for Solving the Problems) The present inventor has discovered that although there are various joining methods for joining dissimilar metals such as stainless steel and Al alloy, high-quality joining can be achieved even if the size of the joining pipe is changed appropriately. The present invention was developed as a result of extensive research into a joining method that would ensure a secure fit.
すなわち、本発明は、ステンレス鋼パイプの一端の接合
部表面にステンレス鋼及びＡｌ合金に固溶性のある金属
を予めメッキしておき、パイプ状の鋳型空間に該ステン
レス鋼パイプの一端が突出するように配置し、該鋳型空
間内に溶融状態のＡ悲合金を鋳込むことにより、パイプ
状のＡｌ合全中にステンレス鋼パイプの一端が浸漬され
るような形態で鋳込まれたステンレス鋼とＡｌ合金との
仮接合パイプを製造し、更にこれをＨＩＰ処理すること
を特徴とするＡｌ合金とステンレス鋼の接合パイプの製
造法を要旨とするものである。That is, in the present invention, the joint surface of one end of a stainless steel pipe is plated in advance with a metal that is solid soluble in stainless steel and an Al alloy, so that one end of the stainless steel pipe protrudes into a pipe-shaped mold space. By placing the A alloy in a molten state in the mold space, the cast stainless steel and Al The gist of this invention is a method for manufacturing a jointed pipe of Al alloy and stainless steel, which is characterized by manufacturing a temporarily joined pipe with an alloy and then subjecting it to HIP treatment.
以下に本発明を更に詳細に説明する。The present invention will be explained in more detail below.
本発明では、Ａｆｉ合金とステンレス鋼の接合パイプを
製造するに当り、まず、予め所要のステンレス鋼パイプ
を用意する。予め用いるステンレス鋼パイプの形状を変
えることにより、巨大な接合パイプから極小の接合パイ
プに至るまで、大きさや長さに限定されない任意の接合
パイプが製造可能である。In the present invention, in manufacturing a joint pipe of Afi alloy and stainless steel, first, a required stainless steel pipe is prepared in advance. By changing the shape of the stainless steel pipe used in advance, it is possible to manufacture any joined pipe, not limited to size or length, from a huge joined pipe to an extremely small joined pipe.
そして、これにＡｆｉ合金及びステンレス鋼に固溶性の
ある金属、例えば、Ａｇ、Ｎｉなどのメッキを施す。こ
れは、Ａｌ合金の溶湯鋳込みに際して、ステンレス鋼母
材表面の酸化を防止すると共に、Ａｌ合金とステンレス
鋼との間の拡散接合作用を容易にし、更に母材間に生成
されやすい脆弱な金属間化合物の成長を阻止するためで
ある。このメッキの厚さは、例えば、Ｎｉの場合は５〜
３０μｍ。Then, this is plated with a metal that is solid soluble in Afi alloy and stainless steel, such as Ag and Ni. This prevents oxidation of the surface of the stainless steel base material when pouring molten aluminum alloy, facilitates the diffusion bonding effect between the aluminum alloy and stainless steel, and also facilitates the brittle intermetallic bonding that tends to occur between the base metals. This is to prevent the growth of the compound. For example, in the case of Ni, the thickness of this plating is 5~
30 μm.
Ａｇの場合は５〜５０μｍ程度が適当である。勿論、こ
れらのメッキに限定されないことは云うまでもない。In the case of Ag, the appropriate thickness is about 5 to 50 μm. Of course, it goes without saying that the plating is not limited to these platings.
表面にメッキされたステンレス鋼パイプは、第１図に示
すような形状の鋳型に設置する。すなわち、鋳型上は砂
型などで作製して押湯部２と空間部（鋳込み空間）３を
形成するが、その際、鋳型空間部がパイプ状になるよう
に設計すると共に、ステンレス鋼パイプ４の一端４□が
突出するように設置する。図中、５は基台、６は鋳枠で
ある。A stainless steel pipe with a plated surface is placed in a mold shaped as shown in FIG. That is, the top of the mold is made using a sand mold or the like to form the riser part 2 and the space (casting space) 3. At this time, the mold space is designed to be pipe-shaped, and the stainless steel pipe 4 is Install so that one end 4□ protrudes. In the figure, 5 is a base and 6 is a flask.
これにより、第２図に示すように、ステンレス鋼パイプ
４の一端の内面側と外面側に適当な間隔を持ったリング
状空間３１．３□が形成される。なお、ステンレス鋼の
先端部を段状にするのが望ましい。As a result, as shown in FIG. 2, a ring-shaped space 31.3□ with an appropriate distance between the inner and outer surfaces of one end of the stainless steel pipe 4 is formed. Note that it is desirable that the tip of the stainless steel be stepped.
次いで、鋳型空間内に溶融Ａｌ金合金注湯し、鋳型から
取り出す。これにより、第３図に示すように、Ａｌ合金
がパイプ状に鋳込まれて、ステンレス鋼の接合部におい
て、Ａｌ合金とステンレス鋼とが拡散接合し、ステンレ
ス鋼パイプ４とＡＩ２合金パイプ鋳物７からなる仮接合
パイプが製造される。Next, molten Al-gold alloy is poured into the mold space and taken out from the mold. As a result, as shown in FIG. 3, the Al alloy is cast into a pipe shape, and the aluminum alloy and the stainless steel are diffusion bonded at the joint of the stainless steel, and the stainless steel pipe 4 and the AI2 alloy pipe casting 7 A temporarily joined pipe consisting of the following is manufactured.
更に、この仮接合パイプをＨＩＰ処理する。これにより
、母材間の拡散は完全な状態になると共に、Ａｌ合金鋳
物パイプの欠陥除去が施される。Furthermore, this temporarily joined pipe is subjected to HIP processing. As a result, diffusion between the base metals becomes complete, and defects in the Al alloy cast pipe are removed.
このＨＩＰ処理は６００〜１２００気圧、４５０〜５５
０℃、０．５〜２．ＯｈｒといったＨＩＰ条件が適当で
ある。This HIP treatment is carried out at 600-1200 atm, 450-55
0°C, 0.5-2. HIP conditions such as Ohr are appropriate.
そして、最終工程として、所定の寸法に機械加工を行う
ことによって、第３図に示すようなＡ２合金パイプ７□
とステンレス鋼パイプ４とからなる接合パイプを完成す
る。この完成された接合パイプは、所定の試験を経て製
品とされる。Then, as a final step, by performing machining to predetermined dimensions, the A2 alloy pipe 7□
A joined pipe consisting of the and stainless steel pipe 4 is completed. This completed jointed pipe is made into a product after passing through predetermined tests.
以上のような工程で製造されるＡｌ合金とステンレス鋼
の接合パイプは、鋳込みとＨＩＰ処理によって母材同士
が強固に拡散接合されており、且つ母材はＨＩ Ｐ処理
によって無欠陥状態に調整されているので、極高真空機
器や極低温機器の部品として、極めて信頼性に富んだ品
質が保証されるものである。In the jointed pipe of Al alloy and stainless steel manufactured through the process described above, the base metals are firmly diffusion bonded to each other by casting and HIP treatment, and the base metal is adjusted to a defect-free state by HIP treatment. As a result, extremely reliable quality is guaranteed as a component for extremely high vacuum equipment and cryogenic equipment.
なお、本発明で得られる接合パイプのサイズは、製造設
備の容量によって左右されるものの、最大１０１００Ｏ
＋φＸ１８００ｓ＋ｍＱという大きさまで容易に製造可
能である。Although the size of the jointed pipe obtained by the present invention depends on the capacity of the manufacturing equipment, it is up to 10,100 O.
It can be easily manufactured up to a size of +φX1800s+mQ.
また、本発明は、メッキ、鋳造、ＨＩＰといった工程に
よる接合パイプ製造法であるため、量産効果が充分であ
り、爆着法に比べて非常に安価な接合パイプを提供する
ことができる。Furthermore, since the present invention is a method for manufacturing a jointed pipe using processes such as plating, casting, and HIP, it has sufficient mass production effects and can provide a jointed pipe that is much cheaper than the explosion bonding method.
なお、ステンレス鋼及びＡｌ合金の材質は特に制限され
ないことは云うまでもない。It goes without saying that the materials of stainless steel and Al alloy are not particularly limited.
（実施例） 次に本発明の実施例を示す。(Example) Next, examples of the present invention will be shown.
ス遣」１−
まず、外径１５４ｍｍ、肉厚４．５■で、長さ６０ｎ＋
ｍのステンレス鋼（ＳＵＳ３０４Ｌ）パイプを用意した
。1- First, the outer diameter is 154mm, the wall thickness is 4.5mm, and the length is 60n+.
A stainless steel (SUS304L) pipe with a diameter of 1.5 m was prepared.
このステンレス鋼パイプの接合部を覆うように、長さ４
０ｍｍに亘って５０μｍ厚さのＡｇメッキを施した。4 lengths to cover the joints of this stainless steel pipe.
Ag plating with a thickness of 50 μm was applied over a length of 0 mm.
次いで、ステンレス鋼パイプを、そのＡｇメッキ部が接
合部になるように鋳型にセットした（第１図参照）。Next, the stainless steel pipe was set in the mold so that its Ag-plated part would become the joint (see Figure 1).
そして、Ａｌ合金（６０６Ｓ）を溶解し、７２０℃で鋳
型に鋳込んだ。Then, Al alloy (606S) was melted and cast into a mold at 720°C.
鋳造後、常温に冷却してから、ステンレス鋼パイプとＡ
ｆ１合金鋳物との仮接合パイプを鋳型から取り出した（
第３図参照）。この時の仮接合部は長さ３２ｍｍであっ
た。After casting, cool to room temperature, then connect stainless steel pipe and A.
The temporarily joined pipe with f1 alloy casting was taken out from the mold (
(See Figure 3). The length of the temporary joint at this time was 32 mm.
そして、この仮接合パイプをＨＩＰ処理した。Then, this temporarily joined pipe was subjected to HIP treatment.
ＨＩＰ条件は１０００気圧、５５０℃、１．Ｏｈｒとし
た。HIP conditions were 1000 atm, 550°C, 1. Ohr.
ＨＩＰ処理後、機械加工を行って外径１５４ｍｍ、肉厚
４．５ｍｍ、長さ１３０ｍｍで、接合部の長さが３２間
のＡｌ合金とステンレス鋼との拡散接合による接合パイ
プを得た（第４図参照）。After the HIP treatment, machining was performed to obtain a bonded pipe with an outer diameter of 154 mm, a wall thickness of 4.5 mm, a length of 130 mm, and a joint length of 32 mm by diffusion bonding between Al alloy and stainless steel (No. (See Figure 4).
得られた接合パイプに対して、真空リーク試験を行った
。すなわち、接合パイプ内をｌＸｌ０−’Ｔ ｏｒｒの
高真空にして、ヘリームディテクターで測定した結果、
真空洩れは認められなかった。A vacuum leak test was conducted on the resulting joined pipe. That is, as a result of making the inside of the joint pipe a high vacuum of lXl0-'T orr and measuring with a helime detector,
No vacuum leak was observed.
また、この接合パイプに対して熱衝撃試験を行った。す
なわち、接合パイプを乾燥炉に挿入し、６０分かけて３
００℃に加熱し、３００℃で３０分保持した後、直ちに
一８０℃のサブゼロ装置に゛挿入して急冷した。２０分
で接合パイプは一８０℃に冷却され、更に１５分保持し
た後、直ちに再び乾燥炉に挿入し、６０分かけて３００
℃に加熱した。このような３００℃と一８０℃との加熱
、冷却サイクルを５回繰返した結果、接合パイプに異常
は認められなかった。A thermal shock test was also conducted on this joined pipe. That is, insert the joint pipe into a drying oven and dry it for 3 minutes over 60 minutes.
After heating to 00°C and holding at 300°C for 30 minutes, it was immediately inserted into a sub-zero apparatus at -80°C for rapid cooling. The jointed pipe was cooled to -80°C in 20 minutes, kept for another 15 minutes, then immediately inserted into the drying oven again and heated to 300°C over 60 minutes.
heated to ℃. As a result of repeating this heating and cooling cycle between 300° C. and −80° C. five times, no abnormality was observed in the joined pipe.
再び、この熱衝撃試験後の接合パイプの内部をＩ Ｘ
１０ ’Ｔｏｒｒの高真空とし、ヘリームリークディテ
クターで測定した結果、真空洩れは認められなかった。Again, the inside of the joined pipe after this thermal shock test was
A high vacuum of 10' Torr was used, and as a result of measurement using a helium leak detector, no vacuum leakage was observed.
失凰舊茎
実施例１において、ステンレス鋼（ＳＵＳ３０４Ｌ）パ
イプ材の接合部にＮｉメッキ（３０μｍ）を施した以外
は、実施例１と同様の手法によってステンレス鋼（ＳＵ
Ｓ３０４Ｌ）とＡｌ合金（６０６３）との拡散接合によ
る接合パイプを得た。この接合パイプに対して、真空リ
ーク試験及び熱衝撃試験を行ったが、実施例１の場合と
同様に好成績を確認した。In Example 1, stainless steel (SUS304L) pipes were made using the same method as in Example 1, except that Ni plating (30 μm) was applied to the joints of the stainless steel (SUS304L) pipe material.
A bonded pipe was obtained by diffusion bonding S304L) and Al alloy (6063). A vacuum leak test and a thermal shock test were conducted on this jointed pipe, and similar to the case of Example 1, good results were confirmed.
星艶員
実施例１において得られた仮接合パイプについて、ＨＩ
Ｐ処理を施すことなく、前記接合パイプのときと同一の
滋養権で真空リーク試験及び熱衝撃試験を行った結果、
真空リーク試験では真空洩れが発生し、熱衝撃試験では
加熱、冷却２回サイクルで仮接合パイプに異常が発生し
た。Regarding the temporarily joined pipe obtained in Hoshien Example 1, HI
As a result of conducting a vacuum leak test and a thermal shock test with the same nutrition as in the case of the jointed pipe without applying P treatment,
In the vacuum leak test, a vacuum leak occurred, and in the thermal shock test, an abnormality occurred in the temporarily joined pipe after two cycles of heating and cooling.
（発明の効果）
以上詳述したように、本発明によれば、ステンレス鋼パ
イプに対するＡｌ合金のパイプ状鋳込みによる拡散接合
と、その後のＨＩＰ処理による拡散接合の促進及びＡ１
合金鋳物パイプの欠陥除去を図るので、高品質の接合パ
イプが安価に得られる。しかも、素材であるステンレス
鋼パイプのサイズを適宜大きさのものを採用することに
よって小型から大型の接合パイプ製品を製造でき、また
量産も可能である。(Effects of the Invention) As described in detail above, according to the present invention, diffusion bonding by pipe-shaped casting of Al alloy to stainless steel pipes, promotion of diffusion bonding by subsequent HIP treatment, and A1
Since defects in alloy cast pipes are removed, high quality jointed pipes can be obtained at low cost. Furthermore, by selecting an appropriate size of the stainless steel pipe material, small to large jointed pipe products can be manufactured, and mass production is also possible.
第１図は鋳型の形状及びステンレス鋼パイプをセットし
た状況並びにＡｌ金合金注湯の要領を示す断面図、
第２図は第１図のＡ−Ａ断面図、
第３図は鋳造後の仮接合パイプを示す断面図、第４図は
完成された接合パイプを示す断面図である。
１・・・鋳型、２・・・押湯部、３・・・鋳型空間部（
鋳込み空間部）、４・・ステンレス鋼パイプ、７・・・
Ａｌ合金パイプ鋳物、７□・・・Ａｌ合金パイプ。Figure 1 is a cross-sectional view showing the shape of the mold, the state in which stainless steel pipes are set, and the procedure for pouring Al-gold alloy. Figure 2 is a cross-sectional view taken along line A-A in Figure 1. Figure 3 is a temporary drawing after casting. FIG. 4 is a sectional view showing a completed joint pipe. 1...Mold, 2...Riser part, 3...Mold space part (
casting space), 4...stainless steel pipe, 7...
Al alloy pipe casting, 7□...Al alloy pipe.
Claims (2)
レス鋼及びＡｌ合金に固溶性のある金属を予めメッキし
ておき、パイプ状の鋳型空間に該ステンレス鋼パイプの
一端が突出するように配置し、該鋳型空間内に溶融状態
のＡｌ合金を鋳込むことにより、パイプ状のＡｌ合金中
にステンレス鋼パイプの一端が浸漬されるような形態で
鋳込まれたステンレス鋼とＡｌ合金との仮接合パイプを
製造し、更にこれをＨＩＰ処理することを特徴とするＡ
ｌ合金とステンレス鋼の接合パイプの製造法。(1) The joint surface of one end of the stainless steel pipe is plated in advance with a metal that is solid soluble in stainless steel and Al alloy, and the one end of the stainless steel pipe is placed so as to protrude into the pipe-shaped mold space. Temporary joining of the cast stainless steel and the Al alloy in such a manner that one end of the stainless steel pipe is immersed in the pipe-shaped Al alloy by casting the molten Al alloy into the mold space. A characterized by manufacturing a pipe and further subjecting it to HIP treatment.
l A method for manufacturing jointed pipes of alloy and stainless steel.
ある請求項１に記載の方法。(2) The method according to claim 1, wherein the plating is either Ag plating or Ni plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3028390A JPH03234347A (en) | 1990-02-09 | 1990-02-09 | Manufacture of joined pipe of al alloy and stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3028390A JPH03234347A (en) | 1990-02-09 | 1990-02-09 | Manufacture of joined pipe of al alloy and stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03234347A true JPH03234347A (en) | 1991-10-18 |
Family
ID=12299392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3028390A Pending JPH03234347A (en) | 1990-02-09 | 1990-02-09 | Manufacture of joined pipe of al alloy and stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03234347A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11255170A (en) * | 1998-03-13 | 1999-09-21 | Honda Motor Co Ltd | Method for manufacturing body frame of motorcycle |
| US7284590B2 (en) | 2004-11-24 | 2007-10-23 | Metso Powdermet Oy | Method for manufacturing cast components |
-
1990
- 1990-02-09 JP JP3028390A patent/JPH03234347A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11255170A (en) * | 1998-03-13 | 1999-09-21 | Honda Motor Co Ltd | Method for manufacturing body frame of motorcycle |
| US7284590B2 (en) | 2004-11-24 | 2007-10-23 | Metso Powdermet Oy | Method for manufacturing cast components |
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