JPH0230741A - Manufacture of aluminum brazing sheet - Google Patents
Manufacture of aluminum brazing sheetInfo
- Publication number
- JPH0230741A JPH0230741A JP63176981A JP17698188A JPH0230741A JP H0230741 A JPH0230741 A JP H0230741A JP 63176981 A JP63176981 A JP 63176981A JP 17698188 A JP17698188 A JP 17698188A JP H0230741 A JPH0230741 A JP H0230741A
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- core material
- alloy
- subjected
- cold rolling
- 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.)
- Granted
Links
- 238000005219 brazing Methods 0.000 title claims abstract description 77
- 229910052782 aluminium Inorganic materials 0.000 title claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000011162 core material Substances 0.000 claims abstract description 41
- 238000000137 annealing Methods 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 34
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000000265 homogenisation Methods 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 abstract description 16
- 230000007797 corrosion Effects 0.000 abstract description 16
- 238000005097 cold rolling Methods 0.000 abstract description 15
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 10
- 239000000945 filler Substances 0.000 abstract description 8
- 238000005098 hot rolling Methods 0.000 abstract description 5
- 238000005253 cladding Methods 0.000 abstract description 4
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 3
- 229910052748 manganese Inorganic materials 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 description 13
- 239000000956 alloy Substances 0.000 description 13
- 238000009792 diffusion process Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
- 238000001953 recrystallisation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000012733 comparative method Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229920013633 Fortron Polymers 0.000 description 1
- 239000004738 Fortron® Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Metal Rolling (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はドロンカップタイプのオイルクーラ、インター
クーラー、エバポレーター等に使用するアルミニウムブ
レージングシートの製造方法に関するもので、プレス成
形等の加工を受けた俊、ろう付加熱で接合する際のろう
材の芯材側への拡散を少なくし、ろう付性や耐食性を向
上させたものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for manufacturing aluminum brazing sheets used in dron cup type oil coolers, intercoolers, evaporators, etc. , which reduces the diffusion of the brazing material toward the core material side when joining with brazing heat and improves brazing performance and corrosion resistance.
ドロンカップタイプのエバポレーターは、第２図（イ）
（ロ）に示すように、板厚０．５〜１Ｍのブレージング
シートをプレス成形したプレスプレート（２）、 （２
°）を積層して冷媒循環路（３）。The Dron cup type evaporator is shown in Figure 2 (a).
As shown in (b), press plates (2) are press-molded brazing sheets with a thickness of 0.5 to 1M, (2)
°) are stacked to form a refrigerant circulation path (3).
（３°）を形成し、コルゲートフィン（１）と組合せ、
ろう付けにより接合して造られている。ブレージングシ
ートにはＪＩＳ 、３００３合金やＪＩＳ ６９５１合
金等を芯材とし、その両面にＪＩＳ ４００４合金ヤＪ
ＩＳ４１０４合金からなるろう材を５〜１５％クラッド
したものが用いられ、プレス成形性をよくする上で軟質
材（Ｏ材）が普及している。(3°) and combined with corrugated fin (1),
It is made by joining by brazing. The brazing sheet has a core material such as JIS 3003 alloy or JIS 6951 alloy, and JIS 4004 alloy layer J on both sides.
A brazing material made of IS4104 alloy with 5 to 15% cladding is used, and a soft material (O material) is popular for improving press formability.
このようなブレージングシートは次のようにして造られ
ている。先ず芯材、例えばＪＩＳ ３００３合金を鋳造
後、６００℃程度の温度で均質化処理を施す。次にろう
材、例えばＪＩＳ ４００４合金を鋳造後、熱間圧延に
より所定の板厚にする。このろう材を上記芯材の両面に
クラッドし、５００″Ｃ程度の温度で熱間圧着圧延によ
り一体の３層材とする。これを３６０〜４００℃の温度
で中間焼鈍と冷間圧延を施して最終板厚とした後、３６
０〜４００℃の温度で最終焼鈍を施して軟質材とする。Such a brazing sheet is manufactured as follows. First, a core material, such as a JIS 3003 alloy, is cast and then homogenized at a temperature of about 600°C. Next, a brazing material such as JIS 4004 alloy is cast and then hot rolled to a predetermined thickness. This brazing filler metal is clad on both sides of the core material, and is hot pressed and rolled at a temperature of about 500"C to form an integrated three-layer material. This is then subjected to intermediate annealing and cold rolling at a temperature of 360 to 400"C. After making the final plate thickness, 36
Final annealing is performed at a temperature of 0 to 400°C to produce a soft material.
プレス成形性の優れたブレージングシートを製造するに
は、均質化温度を高くし、最終焼鈍材のグレンナイズを
微細化し、更に冷間圧延率を８０％以上として最終焼鈍
時の軟化の促進と再結晶粒の微細化を図っている。芯材
の再結晶粒度は５０〜２００μｍ程度である。In order to produce a brazing sheet with excellent press formability, the homogenization temperature should be raised to make the grain size of the final annealing material finer, and the cold rolling rate should be set to 80% or more to promote softening and recrystallization during the final annealing. Efforts are being made to make the grains finer. The recrystallized grain size of the core material is about 50 to 200 μm.
（発明が解決しようとする課題〕
従来の完全Ｏ材をプレス成形すると、Ｏ〜２０％程度の
加工歪が加わり、この歪量が場所によりばらつく。これ
を６００℃程度にろう付加熱すると、芯材の再結晶が十
分に起らない低加工度（５〜１０％）領域では、ろう材
が芯材側へ異常に拡散する現象が発生し、ろう付性を低
下する。(Problems to be Solved by the Invention) When conventional completely O material is press-formed, processing strain of about 0 to 20% is added, and the amount of this strain varies depending on the location. When this is heated by brazing to about 600°C, the core In a low workability range (5 to 10%) where sufficient recrystallization of the material does not occur, a phenomenon occurs in which the brazing material abnormally diffuses toward the core material, reducing brazing properties.
またろうの拡散により芯材の厚さが減少し、腐食による
ろう材部分の優先腐食が発生した場合、芯材の耐食寿命
も板厚減少に比例して短期化する。Further, when the thickness of the core material decreases due to diffusion of the solder material and preferential corrosion occurs in the brazing material portion due to corrosion, the corrosion resistance life of the core material also becomes shorter in proportion to the decrease in plate thickness.
Ａ、ｆ！−Ｍｎ−Ｃｕ系合金を芯材として使用したブレ
ージングシートはろう材を犠牲材として利用できるが、
ろう材拡散が大きくなると犠牲層は増えるものの芯材が
減少し、耐食性が著しく劣化する傾向にあり問題となっ
ている。A, f! Brazing sheets using -Mn-Cu alloy as a core material can use brazing metal as a sacrificial material, but
When the diffusion of the brazing filler metal increases, the sacrificial layer increases, but the core material decreases, which tends to significantly deteriorate the corrosion resistance, which is a problem.
本発明はこれに鑑み、種々検討の結果、Ａｌ−Ｍｎ−Ｃ
ＬＪ系合金を芯材とする耐食性ブレージングシートのろ
う材拡散を少なくし、ろう付性と耐食性を向上させたア
ルミニウムブレージングシートの製造方法を開発したも
のである。In view of this, and as a result of various studies, the present invention has been developed based on Al-Mn-C
We have developed a method for manufacturing aluminum brazing sheets that has improved brazing properties and corrosion resistance by reducing the diffusion of brazing material in corrosion-resistant brazing sheets that use LJ alloy as a core material.
即ち本発明は少なくともＭｎ０．３〜２．０ｗｔ％（以
下ｗｔ％を％と略記）とＣｕ０．２〜１．０％を含有す
るアルミニウム合金を芯材とし、その片面又は両面にア
ルミニウムろう材をクラッドしたブレージングシートの
製造において、芯材を５６０ ℃を超える温度で均質化
処理した後、芯材の片面又は両面にアルミニウムろう材
をクラッドして熱間圧延を施し、しかる後圧延率が２０
〜７０％の冷間圧延を行ない、最後に３００〜４８０℃
の温度で焼鈍処理を行なうことを特徴とするものである
。That is, the present invention uses an aluminum alloy containing at least 0.3 to 2.0 wt% Mn (hereinafter wt% is abbreviated as %) and 0.2 to 1.0% Cu as a core material, and an aluminum brazing material on one or both sides of the core material. In the production of clad brazing sheets, the core material is homogenized at a temperature exceeding 560 °C, then one or both sides of the core material is clad with aluminum brazing material and hot rolled, and then the rolling rate is 20°C.
~70% cold rolling and finally 300~480℃
It is characterized by performing annealing treatment at a temperature of .
本発明において、芯材組成は基本的にはＭｎ０．３〜２
．０％とＣｕ０．２〜１．０％を含有するアルミ合金か
らなり、不純物としてＦｅ０．７％以下、３ｉ０．６％
以下を含み、更に強度向上のために、Ｍｇ０．５％以下
、Ｏｒｏ、３％以下、Ｚｒ０８３％以下、Ｚｎ０．３％
以下、Ｔｉ０．２％以下の範囲内で、何れか１種以上を
添加することもできる。またろう材には真空ろう併用の
Ａ１−５＊−ＭＣＩ系ろう材としてはＪＩＳ ４００４
合金やＪＩＳ ４１０４合金を使用し、フラックスろう
併用のＡ１−５ｉ系ろう材としてはＪＩＳ ４３４３合
金やＪＩＳ ４０４５合金を使用する。In the present invention, the core material composition is basically Mn0.3-2
．． Made of an aluminum alloy containing 0.0% Cu and 0.2-1.0% Cu, and impurities of less than 0.7% Fe and 0.6% 3i.
Contains the following, and for further strength improvement, Mg 0.5% or less, Oro, 3% or less, Zr 083% or less, Zn 0.3%
Any one or more of the following Ti may be added within a range of 0.2% or less. In addition, JIS 4004 is used as A1-5*-MCI brazing filler metal that is used in conjunction with vacuum brazing.
An alloy or a JIS 4104 alloy is used, and a JIS 4343 alloy or a JIS 4045 alloy is used as an A1-5i brazing material used in combination with flux brazing.
しかして本発明における芯材のＭｎ含有量をＯ６３〜２
．０％と限定したのは、Ｍｎは芯材の強度と耐孔食性を
向上するためであり、その含有量が０．３％未満では効
果が不十分であり、２．０％を越えると強度及び耐孔食
性は向上するも塑性加工性が著しく低下するためである
。またＣｕ含有量を０．２〜１．０％と限定したのは、
ＣＵはＭｎ同様芯材の強度と耐孔食性を向上すると共に
、芯材の電位を貴化し、ろう材との電位差により芯材を
防食し、優れた耐孔食性を得るためであり、その含有量
が０．２％未満では効果が不十分であり、１．０％を越
えると電位真北の効果が飽和するばかりか、芯材自体の
耐食性を劣化するためである。Therefore, the Mn content of the core material in the present invention is O63~2
．． The reason for limiting it to 0% is that Mn improves the strength and pitting corrosion resistance of the core material, and if the content is less than 0.3%, the effect is insufficient, and if it exceeds 2.0%, the strength This is because although the pitting corrosion resistance is improved, the plastic workability is significantly reduced. In addition, the reason why the Cu content was limited to 0.2 to 1.0% was that
Like Mn, CU improves the strength and pitting corrosion resistance of the core material, and also nobles the potential of the core material and prevents corrosion of the core material due to the potential difference with the brazing metal, thereby obtaining excellent pitting corrosion resistance. If the amount is less than 0.2%, the effect will be insufficient, and if it exceeds 1.0%, the effect of potential true north will not only be saturated, but also the corrosion resistance of the core material itself will be deteriorated.
本発明は上記芯材を５６０ ℃を超える温度で均質・化
処理した侵、芯材の片面又は両面にアルミニウムろう材
をクラッドして熱間圧延を施し、しかる後圧延率２０〜
７０％の冷間圧延を行ない、最１多に３００〜４８０℃
の温度で焼鈍処理を行なってブレージングシートとする
ものである。The present invention involves homogenizing and heat-treating the core material at a temperature exceeding 560°C, cladding one or both sides of the core material with an aluminum brazing material, and subjecting it to hot rolling.
70% cold rolling, maximum 300~480℃
The brazing sheet is made by annealing at a temperature of .
しかして本発明において、芯材の均質化処理温度を５６
０℃を超える温度と限定したのは、芯材のグレンサイズ
を中程［２００μ瓦以下）として、ろう付時の芯材の再
結晶を促進しろう材の拡散を防止するためであり、均質
化処理温度が５６０℃以下ではグレンサイズが大きくな
ってろう付時の再結晶が遅れろう材の拡散が大きくなる
。またプレス成形性もよくない。尚保持時間は１時間以
上とすることが望ましい。また熱間圧延後の冷間圧延率
を２０〜７０％と限定したのは、次の最終焼鈍処理時に
、部分再結晶組織とし、プレス加工の際に加工歪が加わ
った場合、素材での残留歪と合わせてろう付時に芯材の
あらゆる部分で容易に再結晶し、ろう材の拡散を均一に
少なくするためであり、冷間圧延率が２０％未満では部
分再結晶が進まず、素材の伸びが低下すると共にプレス
成形性を劣化し、７０％を越えると素材の再結晶が進み
、プレス成形時の低加工歪部がろう付加熱でろう材拡散
が大きくなるためである。なお所定冷間圧延率となるよ
う熱間圧延にて板厚を減少できない場合には、冷間圧延
と３６０〜４００℃の中間焼鈍のくりかえしにより所定
板厚に仕上げればよい。ただしこのときの冷間圧延率は
５０％以上とする必要がある。また最終焼鈍温度を３０
０〜４８０℃としたのは、素材の部分再結晶を進めるた
めで、冷間圧延率に対応して４８０℃程度まで昇温する
必要があり、３００°Ｃ未満では部分再結晶が進まず、
素材の伸びが確保されず、成形性が劣る。However, in the present invention, the homogenization temperature of the core material is set to 56
The reason for limiting the temperature to over 0℃ is to set the grain size of the core material to be medium [200μ or less] to promote the recrystallization of the core material during brazing and prevent the diffusion of the brazing material. If the heat treatment temperature is below 560° C., the grain size becomes large, recrystallization during brazing is delayed, and diffusion of the brazing material becomes large. Also, press moldability is not good. Note that the holding time is preferably 1 hour or more. In addition, the cold rolling rate after hot rolling is limited to 20-70% because the partial recrystallized structure is created during the next final annealing process, and if processing strain is applied during press working, residuals in the material In addition to strain, the core material will easily recrystallize in all parts during brazing, and the diffusion of the filler metal will be uniformly reduced. If the cold rolling rate is less than 20%, partial recrystallization will not proceed and the material will This is because as elongation decreases, press formability deteriorates, and when it exceeds 70%, recrystallization of the material progresses, and diffusion of the brazing material increases in low processing strain areas during press forming due to brazing heat. If the plate thickness cannot be reduced by hot rolling to a predetermined cold rolling rate, the plate may be finished to the predetermined thickness by repeating cold rolling and intermediate annealing at 360 to 400°C. However, the cold rolling rate at this time needs to be 50% or more. In addition, the final annealing temperature was set to 30
The reason for setting the temperature to 0 to 480°C is to promote partial recrystallization of the material, and it is necessary to raise the temperature to about 480°C in accordance with the cold rolling rate. If it is less than 300°C, partial recrystallization will not proceed.
The elongation of the material is not ensured, resulting in poor formability.
なお本発明は片面に純Ａｊ？、Ａ１−７ｎ。In addition, in the present invention, pure Aj? , A1-7n.
ＡＪ！−Ｚｎ−Ｍｙ等の犠牲材料をクラッドし、他面に
ろう材をクラッドする場合にも適用することができる。AJ! It can also be applied to the case where a sacrificial material such as -Zn-My is clad and the other side is clad with a brazing material.
即ちラジェーターのヘッダー月に外側はＪＩＳ ４３４
３ろう材を、内側にＡ１−Ｚｎ系、 ＪＩＳ ７０７２
合金をクラッドした３層材を使用し・、外側のろう付性
と耐食性を良好にし、内側（水側）の犠牲効果を更に高
めることができる。In other words, the outside of the radiator header is JIS 434.
3 brazing filler metal, A1-Zn type inside, JIS 7072
By using a three-layer material clad with an alloy, the outer side has good brazing properties and corrosion resistance, and the inner side (water side) can further enhance the sacrificial effect.
（実施例）
第１表に示す５種の芯材を使用してブレージングシート
を試作した。ろう材にはＪＩＳ ４００４合金を用い、
芯材の両面に各々１５％クラッドし、板厚を０．５ｓと
した。上記ブレージングシートの試作に当り、均質処理
、冷間圧延率、最終焼鈍温度を第２表に示す。(Example) Brazing sheets were prototyped using five types of core materials shown in Table 1. JIS 4004 alloy is used as the brazing material,
Each side of the core material was clad with 15% cladding, and the plate thickness was 0.5s. Table 2 shows the homogeneous treatment, cold rolling rate, and final annealing temperature for the trial production of the above brazing sheet.
このようにして試作した１０種のブレージングシートを
使用し、成形性をエリクセン試験により評価した。即ち
９０ｍ角に切断してＪＩ’Ｓ Ｚ２２４７Ａ法に基づき
直径２０．の球頭ポンチで張出成形を行ない、亀裂が入
るときの成形高さを測定し、５個の平均値により評価し
た。Using the 10 types of brazing sheets prototyped in this way, the moldability was evaluated by the Erichsen test. In other words, it was cut into 90m square pieces with a diameter of 20mm based on the JI'S Z2247A method. Stretch molding was performed using a ball-head punch, and the molding height at which cracks appeared was measured, and the evaluation was based on the average value of the five measurements.
ろう付性は第１図に示すようにＪＩＳ ３００３からな
る厚ざ１＃の母板（５）上に上記ブレージングシート（
４）を垂直に立てて接合し、ステンレス線（６）で固定
したＴ継手を用い、真空中６００℃で３分間ろう付加熱
し、その流動係数を測定して評価した。ブレージングシ
ートにはドロンカップエバポレーターのプレス加工を想
定して冷間圧延により加工率０．５．１０．１５．２０
％の加工を加えたものを用いた。流動係数は初期ろう材
！（Ａ＞を断面から求め、ろう付後のフィレット部のろ
う材量（Ｂ）を同じく断面から求め、Ｂ／Ａ値の３個の
平均値で評価した。これ等の結果を第２表に併記した。As shown in Fig. 1, the brazing properties are determined by placing the above brazing sheet (
4) were vertically erected and joined together, using a T-joint fixed with a stainless steel wire (6), brazing was performed in a vacuum at 600° C. for 3 minutes, and the fluidity coefficient was measured and evaluated. The brazing sheet has a processing rate of 0.5.10.15.20 by cold rolling assuming press processing using a Doron cup evaporator.
% processing was used. The flow coefficient is the initial brazing filler metal! (A> was determined from the cross section, and the amount of brazing material (B) in the fillet after brazing was also determined from the cross section, and evaluated using the average of the three B/A values. These results are shown in Table 2. Also listed.
第１表
このように本発明によれば、プレス成形にＪり加工度が
変化したブレージングシートをろミ付する場合、ろう材
の芯材への拡散を小さくしろう付性を安定化すると共に
、耐食性の改善る図ることができる等、工業上顕著な効
果を奏りるものである。Table 1 As described above, according to the present invention, when press-forming a brazing sheet with a changed degree of J-processing, it is possible to reduce the diffusion of the brazing material into the core material and stabilize the brazing properties. This has significant industrial effects, such as improved corrosion resistance.
第１図は流動係数測定のためのＴ継手の斜杉図、第２図
（イ）（ロ）はトロンカップタイツのエバポレーターの
一例を示すもので、（イ）は要部拡大斜視図、（ロ）は
側面図である。
１、フィン
２．２’ 、プレスプレート
３、冷媒循環路
４、ブレージングシート
５、母板
６、ステンレス線
第１表及び第２表から明らかなように本発明方法Ｎα１
〜６によるブレージングシートは何れも従来方法Ｎα７
によるブレージングシートとほぼ同等のエリクセン値を
示し、同等の成形性を有することが判る。また従来方法
Ｎα７によるブレージングシートは加工率を変えたろう
付試験において、５〜１０％の加工度でろうの芯材への
拡散が増大し、ろう付性が低下しているのに対し、本発
明方法Ｎα１〜６によるブレージングシートは何れの加
工度においてもろう材の芯材への拡散が少なく、ろう付
性が優れていることが判る。
一方ソーキング温度５５０℃（ｘ３Ｈｒ）の比較方法Ｎ
α８によるブレージングシートでは、伸びが低くプレス
成形性を示すエリクセン値が低い。
ま・た冷延率が１０％の比較方法Ｎα９及び最終焼鈍温
度が２９０℃である比較方法Ｎα１０によるブレージン
グシートでは何れも部分再結晶が進まず、エリクセン値
が小さい。
〔発明の効果〕Figure 1 is a perspective view of a T-joint for measuring the flow coefficient, Figures 2 (a) and 2(b) are examples of an evaporator for TRON cup tights, (a) is an enlarged perspective view of the main parts, and ( B) is a side view. 1, fins 2.2', press plate 3, refrigerant circulation path 4, brazing sheet 5, mother plate 6, stainless steel wire As is clear from Tables 1 and 2, the method of the present invention Nα1
All brazing sheets according to ~6 are conventional method Nα7
It can be seen that the Erichsen value is almost the same as that of the brazing sheet according to the above-mentioned method, and that it has the same formability. In addition, brazing sheets produced using the conventional method Nα7 were found to exhibit increased brazing properties at 5 to 10% processing rates due to increased brazing properties, while brazing sheets using the conventional method Nα7 were found to have poor brazing properties. It can be seen that the brazing sheets produced by methods Nα1 to Nα6 have excellent brazing properties, with little diffusion of the brazing material into the core material at any degree of processing. On the other hand, comparison method N for soaking temperature 550℃ (x3Hr)
The brazing sheet made of α8 has low elongation and a low Erichsen value, which indicates press formability. In addition, in the brazing sheets produced by the comparative method Nα9 in which the cold rolling rate was 10% and the comparative method Nα10 in which the final annealing temperature was 290° C., partial recrystallization did not proceed and the Erichsen values were small. 〔Effect of the invention〕
Claims (1)
２〜１．０ｗｔ％を含有するアルミニウム合金を芯材と
し、その片面又は両面にアルミニウムろう材をクラッド
したブレージングシートの製造において、芯材を５６０
℃を超える温度で均質化処理した後、芯材の片面又は両
面にアルミニウムろう材をクラッドして熱間圧延を施し
、しかる後圧延率２０〜７０％の冷間圧延を行ない、最
後に３００〜４８０℃の温度で焼鈍処理を行なうことを
特徴とするアルミニウムブレージングシートの製造方法
。(1) At least Mn0.3-2.0wt% and Cu0.
In the production of brazing sheets in which the core material is an aluminum alloy containing 2 to 1.0 wt% and aluminum brazing material is clad on one or both sides of the core material, the core material is
After homogenization treatment at a temperature exceeding ℃, one or both sides of the core material is clad with aluminum brazing material and hot rolled, then cold rolled at a rolling reduction of 20 to 70%, and finally 300 to 70%. A method for producing an aluminum brazing sheet, characterized by performing an annealing treatment at a temperature of 480°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63176981A JPH0696754B2 (en) | 1988-07-18 | 1988-07-18 | Method for manufacturing aluminum brazing sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63176981A JPH0696754B2 (en) | 1988-07-18 | 1988-07-18 | Method for manufacturing aluminum brazing sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0230741A true JPH0230741A (en) | 1990-02-01 |
| JPH0696754B2 JPH0696754B2 (en) | 1994-11-30 |
Family
ID=16023093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63176981A Expired - Lifetime JPH0696754B2 (en) | 1988-07-18 | 1988-07-18 | Method for manufacturing aluminum brazing sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0696754B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03268893A (en) * | 1990-03-15 | 1991-11-29 | Furukawa Alum Co Ltd | Production of aluminum brazing sheet |
| JPH03281761A (en) * | 1990-03-29 | 1991-12-12 | Sumitomo Light Metal Ind Ltd | Manufacture of aluminum alloy brazing sheet excellent in brazability and corrosion resistance |
| US5377901A (en) * | 1993-04-27 | 1995-01-03 | General Motors Corporation | Method for improving corrosion resistance of plate-type vacuum brazed evaporators |
| JP2003062603A (en) * | 2001-08-28 | 2003-03-05 | Sumitomo Light Metal Ind Ltd | Manufacturing method for clad material |
| JP2007152433A (en) * | 2005-12-01 | 2007-06-21 | Sapa Heat Transfer Ab | Method for reducing shearing and crop loss in rolling of built-up slab |
| JP2008254022A (en) * | 2007-04-04 | 2008-10-23 | Kobe Steel Ltd | Method of rolling aluminum clad material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62211360A (en) * | 1986-03-11 | 1987-09-17 | Mitsubishi Alum Co Ltd | Manufacture of al alloy pipe superior in corrosion resistance for heat exchanger |
| JPS63157791A (en) * | 1986-12-19 | 1988-06-30 | Furukawa Alum Co Ltd | Aluminum brazing sheet for drawn cup type heat exchanger |
-
1988
- 1988-07-18 JP JP63176981A patent/JPH0696754B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62211360A (en) * | 1986-03-11 | 1987-09-17 | Mitsubishi Alum Co Ltd | Manufacture of al alloy pipe superior in corrosion resistance for heat exchanger |
| JPS63157791A (en) * | 1986-12-19 | 1988-06-30 | Furukawa Alum Co Ltd | Aluminum brazing sheet for drawn cup type heat exchanger |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03268893A (en) * | 1990-03-15 | 1991-11-29 | Furukawa Alum Co Ltd | Production of aluminum brazing sheet |
| JPH03281761A (en) * | 1990-03-29 | 1991-12-12 | Sumitomo Light Metal Ind Ltd | Manufacture of aluminum alloy brazing sheet excellent in brazability and corrosion resistance |
| JPH0733560B2 (en) * | 1990-03-29 | 1995-04-12 | 住友軽金属工業株式会社 | Method for producing aluminum alloy brazing sheet having excellent brazing property and corrosion resistance |
| US5377901A (en) * | 1993-04-27 | 1995-01-03 | General Motors Corporation | Method for improving corrosion resistance of plate-type vacuum brazed evaporators |
| JP2003062603A (en) * | 2001-08-28 | 2003-03-05 | Sumitomo Light Metal Ind Ltd | Manufacturing method for clad material |
| JP2007152433A (en) * | 2005-12-01 | 2007-06-21 | Sapa Heat Transfer Ab | Method for reducing shearing and crop loss in rolling of built-up slab |
| JP4759499B2 (en) * | 2005-12-01 | 2011-08-31 | サパ ヒート トランスファー エービー | A method to reduce shear and crop loss in rolling of assembled slabs. |
| US8096160B2 (en) | 2005-12-01 | 2012-01-17 | Sapa Heat Transfer Ab | Method for reducing shearing and crop losses at rolling of assembled slabs |
| JP2008254022A (en) * | 2007-04-04 | 2008-10-23 | Kobe Steel Ltd | Method of rolling aluminum clad material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0696754B2 (en) | 1994-11-30 |
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