JPS63303027A - Aluminum brazing sheet for heat exchanger - Google Patents
Aluminum brazing sheet for heat exchangerInfo
- Publication number
- JPS63303027A JPS63303027A JP13497587A JP13497587A JPS63303027A JP S63303027 A JPS63303027 A JP S63303027A JP 13497587 A JP13497587 A JP 13497587A JP 13497587 A JP13497587 A JP 13497587A JP S63303027 A JPS63303027 A JP S63303027A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- weight
- brazing
- core material
- heat exchanger
- 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
- 238000005219 brazing Methods 0.000 title claims abstract description 42
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 38
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 33
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 10
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 8
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 6
- 239000011162 core material Substances 0.000 claims description 30
- 239000010949 copper Substances 0.000 claims description 12
- 239000011572 manganese Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 10
- 239000011777 magnesium Substances 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 9
- 239000011651 chromium Substances 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims 2
- 238000005260 corrosion Methods 0.000 abstract description 21
- 230000007797 corrosion Effects 0.000 abstract description 21
- 229910018125 Al-Si Inorganic materials 0.000 abstract 2
- 229910018520 Al—Si Inorganic materials 0.000 abstract 2
- 238000005253 cladding Methods 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000007747 plating Methods 0.000 description 24
- 230000000694 effects Effects 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- 229910000676 Si alloy Inorganic materials 0.000 description 6
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- -1 aluminum-manganese Chemical compound 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 241000287828 Gallus gallus Species 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001127 nanoimprint lithography Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、熱交換器の管体やヘッダープレート等を形
成するだめの、耐孔食性に優れた高強度の熱交換器用ア
ルミニウムブレージングシートニ関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a high-strength aluminum brazing sheet for heat exchangers with excellent pitting corrosion resistance, which is used to form heat exchanger tubes, header plates, etc. It is related to
アルミニウムは軽量で耐食性にも優れているために、ラ
ジェータやエアコン用コンデンサ、エバポレータ等の自
動車用熱交換器に、アルミニウム製の熱交換器が広く使
用されている。 ′これ等の熱交換器は、構成部品
をろう付けによって組立てて製造することが多く、例え
ばラジェータでは、ろう材を貼合せたプレージングシー
ト製の管体およびヘッダープレートに薄板フィン体を組
合せて、加熱炉内で加熱することにより、管体、ヘッダ
ープレートおよび薄板フィン体をろう付けし、組立て、
製造している。Aluminum is lightweight and has excellent corrosion resistance, so aluminum heat exchangers are widely used in automobile heat exchangers such as radiators, air conditioner condensers, and evaporators. 'These heat exchangers are often manufactured by assembling component parts by brazing. For example, in a radiator, a thin plate fin body is combined with a pipe body made of a plating sheet laminated with brazing material and a header plate. By heating in a heating furnace, the tube body, header plate, and thin plate fin body are brazed and assembled.
Manufactured.
ところで、熱交換器の管体やヘッダープレートに腐食に
より貫通孔などが発生すると、熱交換器は事実上使用で
きなくなる。このため、これ等管体やヘッダープレート
は、腐食により貫通孔などが容易に発生しないことが第
１に必要である。しかし、それだけでなく熱交換器の軽
量化、コスト低下の観点から、管体やヘッダープレート
などの薄肉化を図ることも重要視されている。By the way, if a through hole or the like occurs due to corrosion in the tube body or header plate of a heat exchanger, the heat exchanger becomes virtually unusable. For this reason, it is first necessary that these tube bodies and header plates do not easily develop through holes due to corrosion. However, in addition to this, from the viewpoint of reducing the weight and cost of heat exchangers, it is also important to reduce the thickness of tube bodies, header plates, etc.
前者の点に関しては、耐孔食性に優れたアルミニウムー
マンガン合金製の芯材を採用したプレージングシートを
管体等に使用することにより、一応の解決がなされてい
る。しかし、苛酷な腐食環境下では管体等に比較的容易
に孔食が発生することがあり、未だ充分とは言えない。Regarding the former point, a temporary solution has been achieved by using a plating sheet for the pipe body, etc., which employs a core material made of an aluminum-manganese alloy with excellent pitting corrosion resistance. However, in a severe corrosive environment, pitting corrosion may occur relatively easily in the pipe body, so it is still not sufficient.
後者の点に関しては、上記のプレージングシートによる
管体等では、゛ろう付は時の加熱による強度低下が大き
く、薄肉化したのではろう付は後の強度が極めて低くな
るので、殆ど実現困難である。Regarding the latter point, in the case of pipes made of the above-mentioned plating sheet, "Brazing has a large decrease in strength due to heating, and if the wall is thinned, the strength after brazing will be extremely low, so it is almost difficult to achieve." It is.
従って、この発明は、上述の現状に鑑み、熱交換器の管
体やヘッダープレートなどに、ろう付は後にも高い強度
を持たせ、且つ、苛酷な腐食環境下でも優れた耐孔食性
を発揮させることを可能とした、管体やヘッダープレー
トなどを形成するだめの熱交換器用アルミニウムブレー
ジングシートを提供することを目的とするものである。Therefore, in view of the above-mentioned current situation, this invention provides high strength even after brazing to heat exchanger tubes and header plates, and exhibits excellent pitting corrosion resistance even in severe corrosive environments. The object of the present invention is to provide an aluminum brazing sheet for use in heat exchangers, which can be used to form pipe bodies, header plates, etc.
この発明の熱交換器用アルミニウムブレージングシート
は、
銅：０．１〜０．７重量％、
マグネシウム：０．０５〜０．２０重量％、マンガン：
０．３〜１．５重量％、
シリコン：０．７〜１．３重量％
を含有し、必要に応じて更に、
ジルコニウム：０．０３〜０．１５重量％、クロム：０
．０３〜０．２０重量％、
チタン：０．０１〜０．１０重量％
のうちの少なくとも１種を含有し、
アルミニウムおよび不可避不純物：残部からなるアルミ
ニウム合金製の芯材の１方の面に純アルミニウム製の皮
材を貼合せ、他方の面にアルミニウム−シリコン系合金
製のろう材を貼合せたことに特徴を有するものである。The aluminum brazing sheet for heat exchangers of the present invention contains: copper: 0.1 to 0.7% by weight, magnesium: 0.05 to 0.20% by weight, manganese:
Contains 0.3 to 1.5% by weight, silicon: 0.7 to 1.3% by weight, and further contains, if necessary, zirconium: 0.03 to 0.15% by weight, chromium: 0
．． 03 to 0.20% by weight, titanium: 0.01 to 0.10% by weight, and aluminum and unavoidable impurities: The aluminum alloy core material contains at least one of the following. It is characterized by laminating an aluminum skin material and laminating an aluminum-silicon alloy brazing material on the other side.
以下、この発明について詳述する。This invention will be described in detail below.
この発明において、プレージングシートの芯材を構成す
るアルミニウム合金の成分組成を上記のように定めた理
由は、次の通やである。In this invention, the reason why the composition of the aluminum alloy constituting the core material of the plating sheet is determined as described above is as follows.
マンガンおよびシリコン：マンガン（Ｍｎ） および
シリコン（Ｓｌ）は、両者をアルミニウム合金中に含有
させると、ろう付は時の加熱によりアルミニウムーマン
ガン−シリコン系の微細析出物を形成して、アルミニウ
ム合金の強度を向上する効果がある。従って、プレージ
ングシートの芯材を構成するアルミニウム合金をマンガ
ンおよびシリコンを含有させたものとすれば、プレージ
ングシートによる管体等にろう付は後でも高い強度を持
たせることが可能となる。マンガンおよびシリコンの含
有量が、それぞれ０．３重量％未満および０．７重量％
未満では、上記効果が充分でない。一方、マンガンの含
有量が１．５重量％を超えると、上記効果が飽和するば
かりでなく、アルミニウム合金の加工性が低下する。ま
た、シリコンの含有量が１．３重量％を超えると、アル
ミニウム合金の高温強度が低下するために、プレージン
グシートニ□よる管体等がろう付は時に変形し易くなる
。以上から、芯材を構成するアルミニウム、合金中のマ
ンガンおよびシリコンの含有量は、それぞれ０．３〜１
．５重量％および０．７〜１．３重量％とした。Manganese and silicon: When both manganese (Mn) and silicon (Sl) are contained in an aluminum alloy, they form fine precipitates of aluminum-manganese-silicon system during brazing due to heating, and the aluminum alloy is heated. It has the effect of improving strength. Therefore, if the aluminum alloy constituting the core material of the plating sheet contains manganese and silicon, it is possible to provide high strength to the pipe body or the like made of the plating sheet even after brazing. Manganese and silicon content less than 0.3% and 0.7% by weight, respectively
If it is less than that, the above effect will not be sufficient. On the other hand, when the manganese content exceeds 1.5% by weight, not only the above effects are saturated, but also the workability of the aluminum alloy decreases. Furthermore, if the silicon content exceeds 1.3% by weight, the high-temperature strength of the aluminum alloy decreases, so that tubular bodies and the like made of plating sheets sometimes become easily deformed during brazing. From the above, the content of aluminum constituting the core material, manganese and silicon in the alloy is 0.3 to 1, respectively.
．． 5% by weight and 0.7 to 1.3% by weight.
銅およびマグネシウム：銅（Ｃｕ ）は、アルミニウム
合金中に含有させると、アルミニウム合金の強度を向上
すると共に、アルミニウム合金を電気化学的に責にする
効果がある。一方、マグネシウム（Ｍｇ）は、鋼を含有
させたアルミニウム合金中に微量含有させると、これを
電気化学的により貴にする効果がある。従って、芯材を
構成するアルミニウム合金をマンガンおよびシリコンを
含有させた電気化学的により責なものとすれば、芯材の
１方の面に貼合せる、後述の電気化学的により卑な純ア
ルミニウムからなる皮材との間で、大きな電位差を得る
ことができ、皮材に高い犠牲陽極効果を発揮させること
ができる。しかも、ろう付は時の加熱によって、銅およ
びマグネシウムが芯材の内部から表層部、そして皮材中
へと拡散するので、ろう付は後にその電位差は、皮材の
表層部へ行く程卑で芯材の内部へ行く程貴の滑らかな勾
配を持ったものとなるから、皮材の犠牲陽極効果をより
効果的なものにできる。その結果、プレージングシート
による管体等に苛酷な腐食環境下でも優れた耐孔食性を
発揮させることができる。Copper and Magnesium: Copper (Cu), when contained in an aluminum alloy, has the effect of improving the strength of the aluminum alloy and making the aluminum alloy electrochemically stable. On the other hand, when magnesium (Mg) is contained in a trace amount in an aluminum alloy containing steel, it has the effect of making it electrochemically more noble. Therefore, if the aluminum alloy constituting the core material contains manganese and silicon and is electrochemically more stable, then the electrochemically less pure aluminum bonded to one side of the core material will be used. A large potential difference can be obtained between the skin material and the skin material, allowing the skin material to exhibit a high sacrificial anode effect. Moreover, during brazing, copper and magnesium diffuse from the inside of the core material to the surface layer and into the skin material due to heating, so the potential difference becomes less noble as it goes to the surface layer of the skin material. The sacrificial anode effect of the skin material can be made more effective because it has a smoother gradient as it goes deeper into the core material. As a result, the pipe bodies made of the plating sheet can exhibit excellent pitting corrosion resistance even under severe corrosive environments.
上記の銅の含有量が０．１重量％未満では、アルミニウ
ム合金を電気化学的に貴にする効果が小さく、一方、０
．７重量％を超えるとアルミニウム合金の耐孔食性を低
下させる。以上から、芯材を構成するアルミニウム合金
中の銅の含有量は、０．１〜０．７重量％とした。また
、マグネシウムの含有量が０．０５重量％未満では、銅
を含有させたアルミニウム合金を更に電気化学的に貴に
する効果が小さく、一方、０．２０重量％を超えても同
様である。以上から、芯材を構成するアルミニウム合金
中のマグネシウムの含有量は、０．０５〜０．２０重量
％とした。If the above-mentioned copper content is less than 0.1% by weight, the effect of making the aluminum alloy electrochemically noble is small;
．． If it exceeds 7% by weight, the pitting corrosion resistance of the aluminum alloy will be reduced. From the above, the content of copper in the aluminum alloy constituting the core material was set to 0.1 to 0.7% by weight. Furthermore, if the magnesium content is less than 0.05% by weight, the effect of making the copper-containing aluminum alloy more electrochemically noble is small; on the other hand, if it exceeds 0.20% by weight, the same is true. From the above, the content of magnesium in the aluminum alloy constituting the core material was set to 0.05 to 0.20% by weight.
ジルコニウム、クロムおよびチタン：これらジルコニウ
ム（Ｚｒ ） 、クロム（Ｃｒ）おヨヒチタン（Ｔｉ）
は、アルミニウム合金中に含有させると、アルミニウム
との間で高温でも安定な微細化合物を形成し、ろう付は
後のアルミニウム合金の強度を向上する。従って、プレ
ージングシートの芯Ｉｔを構成するアルミニウム合金を
、ジルコニウム、クロムおよびチタンのうちの少なくと
も１種を含有させたものとすれば、プレージングシート
による管体等にろう付は後により高い強度を持たせるこ
とができる。芯材を構成するアルミニウム合金中ノジル
コニウム、クロムおよびチタンの含有量が、それぞれ０
．０３重量％、０．０３重量％およびＱ、０１重量％未
満では、ろう付は後のアルミニウム合金の強度を向上す
る効果が小さく、一方、それぞれ０．１５重量％、０．
２０重量％および０．１０重量％を超えると、上記効果
が飽和するばかりでなく、アルミニウム合金の溶解鋳造
時に巨大晶を形成して加工性を損なう。以上から、芯材
を構成するアルミニウム合金中のジルコニウム、クロム
およびチタンの含有量は、それぞれ０．０３〜０．１５
重量％、０．０３−０．２０重量％および０．０１〜０
．１０重量％とした。Zirconium, chromium and titanium: These zirconium (Zr), chromium (Cr) and titanium (Ti)
When incorporated into an aluminum alloy, it forms a fine compound with aluminum that is stable even at high temperatures, and improves the strength of the aluminum alloy after brazing. Therefore, if the aluminum alloy constituting the core It of the plating sheet contains at least one of zirconium, chromium, and titanium, the brazing of the plating sheet to the pipe body will increase the strength. can have. The content of nozirconium, chromium, and titanium in the aluminum alloy constituting the core material is 0, respectively.
．． 03 wt%, 0.03 wt% and Q,01 wt%, brazing has little effect on improving the strength of the subsequent aluminum alloy, while at 0.15 wt% and 0.03 wt%, respectively.
When the content exceeds 20% by weight or 0.10% by weight, not only the above effects are saturated, but also giant crystals are formed during melting and casting of the aluminum alloy, impairing workability. From the above, the contents of zirconium, chromium, and titanium in the aluminum alloy constituting the core material are 0.03 to 0.15, respectively.
wt%, 0.03-0.20 wt% and 0.01-0
．． The content was 10% by weight.
この発明のプレージングシートにおいて、上述のアルミ
ニウム合金からなる芯材の１方の面に純アルミニウムか
らなる皮材を貼合せる理由は、上述した通りである。即
ち、芯材を構成するアルミニウム合金が電気化学的によ
り責であす、皮材を構成する純アルミニウムが電気化学
的により卑であるために、芯材の１方の面に皮材を貼合
せると皮材と芯材との間に大きな電位差を得ることがで
き、皮材に高い犠牲陽極効果を発揮させることができる
。しかも、ろう付は時の加熱によって、銅およびマグネ
シウムが芯材の内部から表層部、そして皮材中へと拡散
するので、ろう付は後にその電位差は、皮材の表層部へ
行く程卑で芯材の内部へ行く程貴の滑らかな勾配をもっ
たものとなるから、皮材の犠牲陽極効果をより効果的な
ものにできる。その結果、プレージングシートによる管
体等に苛酷な腐食環境下でも優れた耐孔食性を発輝させ
ることができるようになるからである。In the plating sheet of the present invention, the reason why the skin material made of pure aluminum is bonded to one side of the core material made of the above-mentioned aluminum alloy is as described above. In other words, the aluminum alloy that makes up the core material is electrochemically more sensitive, and the pure aluminum that makes up the skin material is electrochemically more base, so if the skin material is attached to one side of the core material, A large potential difference can be obtained between the skin material and the core material, allowing the skin material to exhibit a high sacrificial anode effect. Moreover, during brazing, copper and magnesium diffuse from the inside of the core material to the surface layer and into the skin material due to heating, so the potential difference becomes less noble as it goes to the surface layer of the skin material. The sacrificial anode effect of the skin material can be made more effective because it has a smoother gradient as it goes deeper into the core material. As a result, the pipe bodies made of the plating sheet can exhibit excellent pitting corrosion resistance even in a severe corrosive environment.
この発明のプレージングシートにおいて、芯材の他方の
面に貼合せるろう材は、従来のプレージングシートと同
様、アルミニウム−シリコン系合金からなるろう材であ
ればよく、特に限定はない。In the plating sheet of the present invention, the brazing material bonded to the other surface of the core material is not particularly limited, as long as it is made of an aluminum-silicon alloy, as in the case of conventional plating sheets.
この発明の範囲内の成分組成を有するアルミニラム合金
製の芯材の１方の面に純アルミニウム製の皮材を貼合せ
、他方の面にアルミニウム−シリコン系合金製のろう材
を貼合せて、本発明ブレージング７−トＮＩＬ１〜５を
製造した。比較のために、この発明の範囲外の成分組成
を有するアルミ＋＝、ウム合金製の芯材の１方の面にア
ルミニウム−シリコン系合金製のろう材を貼合せて、比
較プレージングシートＮａ６〜７を製造した。A core material made of aluminum ram alloy having a composition within the range of the present invention is laminated with a skin material made of pure aluminum on one side, and a brazing material made of an aluminum-silicon alloy is laminated on the other side, Blazing 7-t NILs 1 to 5 of the present invention were produced. For comparison, a comparative plating sheet Na6 was prepared by laminating a brazing material made of an aluminum-silicon alloy to one side of a core material made of an aluminum alloy having a composition outside the range of the present invention. -7 were produced.
芯材は、通常の溶解鋳造法によって得たアルミニウム合
金のスラブを、均質化処理し面削したのち熱間圧延して
、本発明プレージングシート磁１〜５の場合には厚さ８
鶏の板として、比較プレージングシート随６〜７の場合
には厚さ９ｆｉの板として得た。The core material is a slab of aluminum alloy obtained by a normal melting and casting method, which is homogenized, faceted, and then hot rolled to a thickness of 8 in the case of the plating sheet magnets 1 to 5 of the present invention.
In the case of comparative plating sheets Nos. 6 and 7, chicken plates having a thickness of 9fi were obtained.
皮材およびろう材は、それぞれ通常の溶解鋳造法によっ
て得た純アルミニウムのスラブおよびアルミニウム−シ
リコン系合金のスラブを、均質化処理し面削したのち熱
間圧延して厚さ４鴎の板とし、次いで冷間圧延して厚さ
１■の板として得た。The skin material and the brazing material are made by homogenizing a pure aluminum slab and an aluminum-silicon alloy slab obtained by a normal melting and casting method, face-cutting them, and then hot-rolling them into a plate with a thickness of 4 mm. Then, it was cold rolled to obtain a plate having a thickness of 1 inch.
次に、本発明プレージングシート随１〜５の場合には、
芯材の１方の面に皮材を、他方の面にろう材をそれぞれ
重ね合せて、また、比較プレージングシート随６〜７の
場合には、芯材の１方の面にろう材を重ね合せて、熱間
圧延することにより皮材等を芯材に貼合せ、次いで適宜
中間焼鈍を施しつつ冷間圧延して、最終冷間圧延率２５
％の厚さ０．４＋ｎのプレージングシートとした。Next, in the case of praising sheets 1 to 5 of the present invention,
The skin material is superimposed on one side of the core material, and the brazing material is superimposed on the other surface, and in the case of comparative plating sheets Nos. 6 and 7, the brazing material is superimposed on one surface of the core material. The skin material etc. are bonded to the core material by overlapping and hot rolling, and then cold rolling with appropriate intermediate annealing to achieve a final cold rolling rate of 25.
The plating sheet had a thickness of 0.4+n.
皮材を構成する純アルミニウムおよびろう材を構成する
アルミニウム−シリコン系合金の成分組成を第１表に、
芯材を構成するアルミニウム合金の成分組成を第２表に
示す。Table 1 shows the composition of the pure aluminum that makes up the skin material and the aluminum-silicon alloy that makes up the brazing material.
Table 2 shows the composition of the aluminum alloy constituting the core material.
第１表
次に、本発明プレージングシートＮ［Ｌ１〜５および比
較プレージングシートＮ１１６〜７を、ろう付は処理に
相当する条件で加熱して、性能試験に供した。ろう付は
処理に相当する条件での加熱は、真空ろう付は処理の場
合とフラックスろう付は処理の場合の２つを試めし、そ
れぞれｌ Ｏ−’ Ｔｏｒｒの真空炉中、大気圧の窒素
ガス雰囲気炉中、温度６００℃で１０分間保持すること
により行なった。Table 1 Next, the plating sheets N[L1-5 of the present invention and comparative plating sheets N116-7] were heated under conditions corresponding to the brazing treatment and subjected to a performance test. For brazing, we tried two methods of heating under conditions equivalent to processing: vacuum brazing (processing) and flux brazing (processing). The test was carried out by holding the temperature at 600° C. for 10 minutes in a gas atmosphere furnace.
性能試験は、上記の加熱後、本発明ブレージングシー）
Ｎｉｌ〜５および比較プレージングシート随６〜７から
引張試、験片および腐食試験片を切出し、室温引張試験
および腐食液浸漬試験の２つを行なった。腐食液浸漬試
験は、５０ ｍ Ｘ ８０ ｇＨの大きさの腐食試験片
をろう材側に塗装絶縁して、ｃｆ−１０００ｐｐｍ ｌ
ｌ５ｏ４” ｌ ＯＯｐｐｍ 、 Ｃｕ” ｌｐｐｍを
含む４０℃の腐食液中に３０日間浸漬することにより芙
施し、そのとき発生した孔食の最大孔食深さを測定した
。The performance test was performed using the brazing sea according to the present invention after heating as described above.
Tensile test pieces, test pieces and corrosion test pieces were cut out from Nil~5 and comparative plating sheets Nos. 6 and 7, and two tests were conducted: a room temperature tensile test and a corrosive liquid immersion test. In the corrosive liquid immersion test, a corrosion test piece with a size of 50 m x 80 gH was coated and insulated on the brazing metal side, and a cf-1000 ppm l
The specimen was immersed for 30 days in a corrosive solution at 40° C. containing l5o4''lOOppm and Cu''lppm, and the maximum depth of pitting corrosion that occurred was measured.
室温引張試験による引張強さおよび腐食液浸漬試験によ
る最大孔食深さの測定結果を、先の第２表に示す。The measurement results of the tensile strength by the room temperature tensile test and the maximum pitting depth by the corrosive liquid immersion test are shown in Table 2 above.
第２表に示されるように、本発明プレージングシート磁
１〜５では、ろう付は処理に相当する条件での加熱後に
も高い強度を有しており、また、発生した孔食の最大孔
食深さも小さく耐孔食性も極めて良好となっている。こ
れに対し、比較プレージングシート随６〜マでは、ろう
付は処理に相当する条件での加熱後に強度が充分でなく
、また、シートを貫通する程深い孔食が発生し耐孔食性
も極めて悪い。As shown in Table 2, in the plating sheet magnets 1 to 5 of the present invention, the brazing has high strength even after heating under conditions equivalent to the treatment, and the maximum porosity of the pitting corrosion that has occurred is The corrosion depth is small and pitting corrosion resistance is extremely good. On the other hand, in comparison plating sheets No. 6 to 6, brazing did not have sufficient strength after heating under conditions equivalent to treatment, and pitting corrosion occurred deep enough to penetrate the sheet, resulting in extremely poor pitting corrosion resistance. bad.
以上説明したように、この発明のアルミニウムブレージ
ングシートによれば、熱交換器の管体やヘッダープレー
トなどに、ろう付は後にも高い強度を持たせ、且つ、苛
酷な腐食環境下でも優れた耐孔食性を発揮させることが
できる。従って、熱交換器の寿命を延ばすことができる
他、管体やヘッダープレートなどの薄肉化を図ることが
でき、このため熱交換器の軽量化、コスト低下が可能と
なる。As explained above, the aluminum brazing sheet of the present invention provides high strength even after brazing to heat exchanger tubes and header plates, and has excellent resistance even in severe corrosive environments. It can exhibit pitting corrosion properties. Therefore, the life of the heat exchanger can be extended, and the tubes, header plates, etc. can be made thinner, and therefore the weight and cost of the heat exchanger can be reduced.
Claims (2)
０．３〜１．５重量％、 シリコン：０．７〜１．３重量％ を含有し、 アルミニウムおよび不可避不純物：残部 からなるアルミニウム合金製の芯材の１方の面に純アル
ミニウム製の皮材を貼合せ、他方の面にアルミニウム−
シリコン系合金製のろう材を貼合せたことを特徴とする
、熱交換器用アルミニウムブレージングシート。1. Copper: 0.1-0.7% by weight, Magnesium: 0.05-0.20% by weight, Manganese:
0.3 to 1.5% by weight, silicon: 0.7 to 1.3% by weight, and a pure aluminum skin on one side of an aluminum alloy core material consisting of aluminum and unavoidable impurities: the balance. The materials are pasted together, and the other side is covered with aluminum.
An aluminum brazing sheet for heat exchangers, characterized by laminating silicone alloy brazing material.
０．３〜１．５重量％、 シリコン：０．７〜１．３重量％ を含有し、更に、 ジルコニウム：０．０３〜０．１５重量％、クロム：０
．０３〜０．２０重量％、 チタン：０．０１〜０．１０重量％ のうちの少なくとも１種を含有し、 アルミニウムおよび不可避不純物：残部 からなるアルミニウム合金製の芯材の１方の面に純アル
ミニウム製の皮材を貼合せ、他方の面にアルミニウム−
シリコン系合金製のろう材を貼合せたことを特徴とする
、熱交換器用アルミニウムブレージングシート。2. Copper: 0.1-0.7% by weight, Magnesium: 0.05-0.20% by weight, Manganese:
Contains 0.3-1.5% by weight, silicon: 0.7-1.3% by weight, and further contains zirconium: 0.03-0.15% by weight, chromium: 0
．． 03 to 0.20% by weight, titanium: 0.01 to 0.10% by weight, and aluminum and unavoidable impurities: The aluminum alloy core material contains at least one of the following. Aluminum skin material is laminated, and aluminum is attached to the other side.
An aluminum brazing sheet for heat exchangers, characterized by laminating silicone alloy brazing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13497587A JPS63303027A (en) | 1987-06-01 | 1987-06-01 | Aluminum brazing sheet for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13497587A JPS63303027A (en) | 1987-06-01 | 1987-06-01 | Aluminum brazing sheet for heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63303027A true JPS63303027A (en) | 1988-12-09 |
Family
ID=15140983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13497587A Pending JPS63303027A (en) | 1987-06-01 | 1987-06-01 | Aluminum brazing sheet for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63303027A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04193926A (en) * | 1990-11-28 | 1992-07-14 | Sumitomo Light Metal Ind Ltd | High strength aluminum alloy clad material for heat exchanger having high corrosion resistance |
| JPH04193925A (en) * | 1990-11-28 | 1992-07-14 | Sumitomo Light Metal Ind Ltd | High strength aluminum alloy clad material for heat exchanger having high corrosion resistance |
| JPH04198446A (en) * | 1990-11-29 | 1992-07-17 | Sumitomo Light Metal Ind Ltd | High strength aluminum alloy clad material for heat exchanger having high corrosion resistance |
| JPH05230576A (en) * | 1992-02-18 | 1993-09-07 | Sumitomo Light Metal Ind Ltd | High strength and high corrosion resistance aluminum alloy clad material for heat exchanger |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5616646A (en) * | 1979-07-23 | 1981-02-17 | Sumitomo Light Metal Ind Ltd | Aluminum alloy clad for heat exchanger |
| JPS5641347A (en) * | 1979-09-13 | 1981-04-18 | Furukawa Alum Co Ltd | Aluminum alloy clad for vacuum brazing |
| JPS59150052A (en) * | 1983-02-14 | 1984-08-28 | Kobe Steel Ltd | Al composite material for brazed heat exchanger |
| JPS59205445A (en) * | 1983-05-02 | 1984-11-21 | Furukawa Alum Co Ltd | Aluminium alloy clad material for heat exchanger |
| JPS6182992A (en) * | 1984-09-28 | 1986-04-26 | Furukawa Alum Co Ltd | Al alloy brazing sheet |
| JPS6280246A (en) * | 1985-10-02 | 1987-04-13 | Mitsubishi Alum Co Ltd | Al alloy material for heat exchanger excellent in strength at high temperature |
| JPS63192590A (en) * | 1987-02-03 | 1988-08-09 | Kobe Steel Ltd | Alminum alloy composite material for brazing |
-
1987
- 1987-06-01 JP JP13497587A patent/JPS63303027A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5616646A (en) * | 1979-07-23 | 1981-02-17 | Sumitomo Light Metal Ind Ltd | Aluminum alloy clad for heat exchanger |
| JPS5641347A (en) * | 1979-09-13 | 1981-04-18 | Furukawa Alum Co Ltd | Aluminum alloy clad for vacuum brazing |
| JPS59150052A (en) * | 1983-02-14 | 1984-08-28 | Kobe Steel Ltd | Al composite material for brazed heat exchanger |
| JPS59205445A (en) * | 1983-05-02 | 1984-11-21 | Furukawa Alum Co Ltd | Aluminium alloy clad material for heat exchanger |
| JPS6182992A (en) * | 1984-09-28 | 1986-04-26 | Furukawa Alum Co Ltd | Al alloy brazing sheet |
| JPS6280246A (en) * | 1985-10-02 | 1987-04-13 | Mitsubishi Alum Co Ltd | Al alloy material for heat exchanger excellent in strength at high temperature |
| JPS63192590A (en) * | 1987-02-03 | 1988-08-09 | Kobe Steel Ltd | Alminum alloy composite material for brazing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04193926A (en) * | 1990-11-28 | 1992-07-14 | Sumitomo Light Metal Ind Ltd | High strength aluminum alloy clad material for heat exchanger having high corrosion resistance |
| JPH04193925A (en) * | 1990-11-28 | 1992-07-14 | Sumitomo Light Metal Ind Ltd | High strength aluminum alloy clad material for heat exchanger having high corrosion resistance |
| JPH04198446A (en) * | 1990-11-29 | 1992-07-17 | Sumitomo Light Metal Ind Ltd | High strength aluminum alloy clad material for heat exchanger having high corrosion resistance |
| JPH05230576A (en) * | 1992-02-18 | 1993-09-07 | Sumitomo Light Metal Ind Ltd | High strength and high corrosion resistance aluminum alloy clad material for heat exchanger |
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