JPH1080827A - Repairing method of aluminium alloy part - Google Patents
Repairing method of aluminium alloy partInfo
- Publication number
- JPH1080827A JPH1080827A JP23824696A JP23824696A JPH1080827A JP H1080827 A JPH1080827 A JP H1080827A JP 23824696 A JP23824696 A JP 23824696A JP 23824696 A JP23824696 A JP 23824696A JP H1080827 A JPH1080827 A JP H1080827A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum alloy
- alloy part
- aluminum
- brazing material
- weight
- 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
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、アルミニウム合金
部品の補修方法に関する。The present invention relates to a method for repairing an aluminum alloy part.
【0002】[0002]
【従来の技術】ガスタービンに付属して設けられた補機
やケーシング類等において、外部応力、異物の衝突、熱
履歴、金属疲労などに基づく損傷が生じた場合には、適
宜技術により補修が施される。前記補機やケーシング類
等においては、アルミニウムをベースにした合金が使用
され、例えばケーシング1にクラック等の欠陥部Cが生
じた場合には、欠陥部Cを含む周囲の部分を広範囲に亙
って削り取り、肉盛り溶接する等の補修が行われてい
る。2. Description of the Related Art In the case of damage caused by external stress, foreign matter impact, heat history, metal fatigue, etc., in auxiliary equipment and casings attached to a gas turbine, repairs can be made by appropriate technology. Will be applied. An aluminum-based alloy is used in the accessories and casings, and when a defective portion C such as a crack occurs in the casing 1, for example, the surrounding portion including the defective portion C is extended over a wide range. Repairs such as shaving and overlay welding are performed.
【0003】[0003]
【発明が解決しようとする課題】しかし、アルミニウム
の溶接は、溶融温度が低く熱伝導性が高いというその材
料の特徴がありながら表面を融点の高いアルミニウム酸
化物で覆われているため、溶接入熱を大きくせざるを得
ず、熱影響範囲が拡大して寸法精度を確保することが困
難な場合が多い。また、欠陥部の周囲を削り取るため、
欠陥部が大きい場合には、母材組織が減少した分だけ強
度が低下したり変形が生じたりする等、回復が技術的に
困難なものとなり易い。However, the welding of aluminum is characterized by its low melting temperature and high thermal conductivity, but its surface is covered with aluminum oxide having a high melting point. In many cases, the heat must be increased, and the range of heat influence is increased, and it is often difficult to ensure dimensional accuracy. Also, to scrape around the defect,
When the defect portion is large, the recovery tends to be technically difficult, such as a decrease in strength or deformation due to the decrease in the base metal structure.
【0004】本発明は、上記の事情に鑑みてなされたも
ので、以下の目的を達成しようとするものである。 補修終了時の寸法精度の向上を図る。 局所的な歪みの発生の減少を図る。 溶接時の溶融による変形の防止を図る。 欠陥部の消滅を図る。 アルミニウム合金部品の補修コストの削減を図る。[0004] The present invention has been made in view of the above circumstances, and aims to achieve the following objects. Improve dimensional accuracy at the end of repair. Reduce the occurrence of local distortion. Prevent deformation due to melting during welding. Eliminate defective parts. Reduce the cost of repairing aluminum alloy parts.
【0005】[0005]
【課題を解決するための手段】アルミニウム合金部品の
欠陥部をアルミニウムをベースとする鑞材で塞ぐ工程
と、アルミニウム合金部品を真空雰囲気中において欠陥
部の脱気をおこなう工程と、真空雰囲気中でアルミニウ
ム合金部品を加熱し鑞材を溶解して欠陥部の内部に浸透
させる工程と、アルミニウム合金部品を高温静水圧プレ
ス処理することにより鑞材を欠陥部の内奥部に送り込む
工程と、鑞材とアルミニウム合金部品の組織とを拡散接
合により一体とする工程とを有する技術が適用される。
高温静水圧プレス処理時における圧力気体として、アル
ゴンガス等の不活性ガスが使用され、400℃〜500
℃の温度で拡散接合処理される。アルミニウム合金部品
は、珪素:4.0〜8.0重量%、マグネシウム:0.
2〜0.6重量%、銅:0〜1.5重量%、残部がアル
ミニウムである化学成分の合金が適用される。鑞材にあ
っては、アルミニウムをベースとする合金とされ、ゲル
マニウム、銅、珪素、マグネシウムのうちの少なくても
一つの元素を含むものとされ、望ましくは、ゲルマニウ
ム:0〜50重量%、珪素:5〜20重量%、マグネシ
ウム:0.5〜1.5重量%、銅:0.5〜1.5重量
%の化学成分を有するものが適用される。Means for solving the problems: a step of closing a defective portion of an aluminum alloy part with an aluminum-based brazing material; a step of degassing the aluminum alloy part in a vacuum atmosphere; Heating the aluminum alloy part to melt the brazing material and infiltrate the inside of the defect; feeding the brazing material to the inner part of the defect by subjecting the aluminum alloy part to high-temperature isostatic pressing; And a step of integrating the structure of the aluminum alloy component with the structure of the aluminum alloy component by diffusion bonding.
An inert gas such as an argon gas is used as a pressure gas at the time of the high-temperature isostatic pressing.
Diffusion bonding is performed at a temperature of ° C. Aluminum alloy parts are silicon: 4.0-8.0% by weight, magnesium: 0.
An alloy having a chemical composition of 2 to 0.6% by weight, copper: 0 to 1.5% by weight, and the balance being aluminum is applied. The brazing material is an alloy based on aluminum and contains at least one element of germanium, copper, silicon and magnesium. Preferably, germanium: 0 to 50% by weight, silicon : 5 to 20% by weight, magnesium: 0.5 to 1.5% by weight, copper: 0.5 to 1.5% by weight.
【0006】[0006]
【発明の実施の形態】以下、本発明に係るアルミニウム
合金部品の補修方法の一実施形態を、図面に基づいて説
明する。図1ないし図3において、符号1はアルミニウ
ム合金部品(ケーシング)、2は鑞材、Cは欠陥部(ク
ラック)である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for repairing an aluminum alloy part according to the present invention will be described below with reference to the drawings. 1 to 3, reference numeral 1 denotes an aluminum alloy part (casing), 2 denotes a brazing material, and C denotes a defect (crack).
【0007】アルミニウム合金部品1は、前述した図4
に示すケーシングであり、珪素:4.0〜8.0重量
%、マグネシウム:0.2〜0.6重量%、銅:0〜
1.3重量%、残部がアルミニウムである合金が適用さ
れ、例えば、表1に示す組織の合金から、珪素:5.0
重量%、マグネシウム:0.5重量%、銅:1.3重量
%、残部がアルミニウムからなる組成を持つものが適用
される。また、ケーシング1には、図4に示すようなク
ラックCが生じており、クラックCの大きさは、ケーシ
ング1の表面で長さ20mm〜30mm、幅0.1mm
〜10mm程度であるとする。[0007] The aluminum alloy part 1 corresponds to FIG.
And silicon: 4.0 to 8.0% by weight, magnesium: 0.2 to 0.6% by weight, copper: 0 to 0%.
An alloy having 1.3% by weight and the balance being aluminum is applied. For example, from an alloy having a structure shown in Table 1, silicon: 5.0
%, Magnesium: 0.5%, copper: 1.3% by weight, with the balance being aluminum. Further, a crack C as shown in FIG. 4 is formed in the casing 1, and the size of the crack C is 20 mm to 30 mm in length and 0.1 mm in width on the surface of the casing 1.
It is assumed to be about 10 to 10 mm.
【表1】 [Table 1]
【0008】鑞材2は、粉末状、板状、あるいはペース
ト状とされ、ケーシング1よりも融点の低い合金とされ
る。その組成は、例えばゲルマニウムが35〜45重量
%、珪素が10〜15重量%、マグネシウムが0.6〜
0.7重量%、銅が0.6〜0.7重量%、残部がアル
ミニウムとされ、表2に示す組織の合金から、特にゲル
マニウムが35重量%、珪素が12重量%、マグネシウ
ムが0.7重量%、銅が0.7重量%、残部がアルミニ
ウムの組成を持つものが適用される。かかる組成の鑞材
2は、その融点が例えば510℃となる。The brazing filler metal 2 is in the form of powder, plate, or paste, and is an alloy having a lower melting point than the casing 1. The composition is, for example, 35 to 45% by weight of germanium, 10 to 15% by weight of silicon, and 0.6 to
The alloy has 0.7 wt%, copper is 0.6 to 0.7 wt%, and the balance is aluminum. From the alloys having the structures shown in Table 2, in particular, 35 wt% of germanium, 12 wt% of silicon, and 0.1 wt% of magnesium were used. One having a composition of 7% by weight, 0.7% by weight of copper, and the balance aluminum is applied. The melting point of the brazing material 2 having such a composition is, for example, 510 ° C.
【表2】 [Table 2]
【0009】以下、本発明に係るアルミニウム合金部品
の補修方法の実施状況について工程順に説明する。Hereinafter, the state of implementation of the method for repairing an aluminum alloy part according to the present invention will be described in the order of steps.
【0010】〔欠陥部の閉塞処理〕図1に示すように、
ケーシング1の表面にクラックCが生じている際、クラ
ックCを切削することなくクラックCを塞ぐように鑞材
2を配する。鑞材2は、ペースト状とするとともに、ク
ラックCに挿入状態とすることが望ましい。[Defect Blocking Process] As shown in FIG.
When a crack C is formed on the surface of the casing 1, the brazing filler metal 2 is arranged so as to close the crack C without cutting the crack C. It is desirable that the brazing material 2 be in a paste state and be inserted into the crack C.
【0011】〔真空処理〕ケーシング1を例えば真空炉
の内部に挿入し、クラックCおよび鑞材2が上方位置と
なるように設定した状態で10-2torr程度の真空雰囲気
としてクラックCの内部空気を除去する。[Vacuum treatment] The casing 1 is inserted into, for example, a vacuum furnace, and a vacuum atmosphere of about 10 -2 torr is set in a state where the crack C and the brazing material 2 are set to the upper position. Is removed.
【0012】〔高温処理〕ケーシング1を鑞材2の融点
以上の温度、例えば510℃以上とする。鑞材2はが溶
融状態になると、重力あるいは毛細管現象に基づいて、
図2に示すように、クラックCの内部まで浸透する。鑞
材2がクラックCの内部に浸透した場合にあっても、ク
ラックCの内部には鑞材2が充填されない残留空間Dが
存在する場合が考えられる。[High Temperature Treatment] The casing 1 is set to a temperature higher than the melting point of the brazing material 2, for example, 510 ° C. or higher. When the brazing filler metal 2 is in a molten state, it is based on gravity or capillary action.
As shown in FIG. Even when the solder material 2 penetrates into the crack C, there may be a case where a residual space D in which the solder material 2 is not filled exists inside the crack C.
【0013】〔高温静水圧プレス処理〕次いで、炉内に
アルゴンガス等の不活性ガスを充填し、ガス圧を高めか
つ炉内温度を上げることにより高温静水圧プレス処理を
行う。この際に、ガス圧によってクラックCに残存して
いた空間は押しつぶされ、縮小および消滅が行われる。[High-Temperature Isostatic Pressing] Next, a high-temperature isostatic pressing is performed by filling the furnace with an inert gas such as an argon gas and increasing the gas pressure and the furnace temperature. At this time, the space remaining in the crack C is crushed by the gas pressure, and the space is reduced and eliminated.
【0014】〔拡散処理〕さらに、拡散接合適温、例え
ば500℃の温度状態で数時間例えば4時間炉内に保持
することにより、拡散処理が行われる。その結果、鑞材
2のアルミニウム等の構成原子はケーシング1の母材中
に拡散し、同様にケーシング1中のアルミニウム等の構
成原子は鑞材2の内部に拡散して、ケーシング1と鑞材
2とが拡散接合されて一体となり、図3に示すように、
周囲と同一の組織の修復部Eが形成される。なお、この
処理は、高温静水圧プレス時に一括して行うこともでき
る。[Diffusion Treatment] Further, the diffusion treatment is carried out by holding in a furnace at an appropriate temperature for diffusion bonding, for example, 500 ° C. for several hours, for example, 4 hours. As a result, the constituent atoms of the brazing material 2 such as aluminum diffuse into the base material of the casing 1, and similarly, the constituent atoms of the brazing material 2 such as aluminum diffuse into the inside of the brazing material 2, and 2 are integrated by diffusion bonding, as shown in FIG.
A repair portion E of the same tissue as the surroundings is formed. In addition, this process can be performed collectively at the time of high-temperature isostatic pressing.
【0015】[0015]
【発明の効果】本発明のアルミニウム合金部品の補修方
法によれば、以下の効果を奏する。 (1)アルミニウム合金部品の全体を同一温度状態、同
一圧力状態として補修を行うため、局所的な歪みの発生
の減少を図ることができる。 (2)アルミニウム合金部品と鑞材を炉内処理によって
拡散結合するため、溶接時の溶融による変形の防止を図
ることができる。 (3)上記により修理終了時の寸法精度の向上を図るこ
とができる。 (4)アルミニウム合金部品のクラックを拡散結合する
ため、組織組成が均一になる。According to the method for repairing an aluminum alloy part of the present invention, the following effects can be obtained. (1) Since the repair is performed with the entire aluminum alloy part in the same temperature state and the same pressure state, the occurrence of local distortion can be reduced. (2) Since the aluminum alloy component and the brazing material are diffusion-bonded by furnace treatment, deformation due to melting during welding can be prevented. (3) As described above, the dimensional accuracy at the time of completion of repair can be improved. (4) Since the cracks in the aluminum alloy component are bonded by diffusion, the structure composition becomes uniform.
【図1】 本発明に係るアルミニウム合金部品の補修方
法の一実施形態を示す正断面図である。FIG. 1 is a front sectional view showing one embodiment of a method for repairing an aluminum alloy component according to the present invention.
【図2】 図1のアルミニウム合金部品を熱処理した状
態を示す正断面図である。FIG. 2 is a front sectional view showing a state in which the aluminum alloy part of FIG. 1 is heat-treated.
【図3】 図2のアルミニウム合金部品を高温静水圧プ
レス処理した状態を示す正断面図である。FIG. 3 is a front sectional view showing a state in which the aluminum alloy part of FIG. 2 has been subjected to high-temperature isostatic pressing.
1…アルミニウム合金部品(ケーシング) 2…鑞材 C…欠陥部(クラック) D…残留空間 E…修復部 1: Aluminum alloy part (casing) 2: Brazing material C: Defect part (crack) D: Residual space E: Restoration part
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 C22C 21/02 C22C 21/02 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical display location C22C 21/02 C22C 21/02
Claims (7)
気中において欠陥部(C)の脱気をおこなう工程と、真
空雰囲気中でアルミニウム合金部品を加熱し鑞材(2)
を溶解して欠陥部の内部に浸透させる工程と、アルミニ
ウム合金部品を高温静水圧プレス処理することにより鑞
材を欠陥部の内奥部に送り込む工程とを有することを特
徴とするアルミニウム合金部品の補修方法。A step of degassing a defective portion (C) in an aluminum alloy part (1) in a vacuum atmosphere; and a step of heating the aluminum alloy part in a vacuum atmosphere to form a brazing filler metal (2).
Melting and infiltrating the inside of the defect, and sending the brazing material to the inner part of the defect by subjecting the aluminum alloy part to high-temperature isostatic pressing. Repair method.
(1)の組織とを拡散接合により一体とする工程とを有
することを特徴とする請求項1記載のアルミニウム合金
部品の補修方法。2. A method for repairing an aluminum alloy part according to claim 1, further comprising a step of integrating the structure of the brazing material (2) and the structure of the aluminum alloy part (1) by diffusion bonding.
気中において欠陥部(C)の脱気をおこなう工程と、真
空雰囲気中でアルミニウム合金部品を加熱し鑞材(2)
を溶解して欠陥部の内部に浸透させる工程と、アルミニ
ウム合金部品を高温静水圧プレス処理することにより鑞
材を欠陥部の内奥部に送り込む工程と、鑞材とアルミニ
ウム合金部品の組織とを拡散接合により一体とする工程
とが同一容器内で行われることを特徴とする請求項1ま
たは2記載のアルミニウム合金部品の補修方法。3. A process for degassing a defect (C) in an aluminum alloy part (1) in a vacuum atmosphere, and heating the aluminum alloy part in a vacuum atmosphere to form a brazing filler metal (2).
Dissolving and infiltrating the inside of the defect, sending the brazing material into the inside of the defect by subjecting the aluminum alloy part to high-temperature isostatic pressing, and forming the structure of the brazing material and the aluminum alloy part. The method for repairing an aluminum alloy part according to claim 1 or 2, wherein the step of integrating by diffusion bonding is performed in the same container.
として不活性ガスが使用され、400℃以上の温度状態
で拡散接合処理が行われることを特徴とする請求項1か
ら3のいずれか記載のアルミニウム合金部品の補修方
法。4. The aluminum according to claim 1, wherein an inert gas is used as a pressure gas in the high-temperature isostatic pressing, and the diffusion bonding is performed at a temperature of 400 ° C. or higher. Repair method for alloy parts.
4.0〜8.0重量%、マグネシウム:0.2〜0.6
重量%、銅:0〜1.5重量%、残部がアルミニウムで
ある化学成分の合金であることを特徴とする請求項1か
ら4のいずれか記載のアルミニウム合金部品の補修方
法。5. The aluminum alloy part (1) is made of silicon:
4.0 to 8.0% by weight, magnesium: 0.2 to 0.6
The method for repairing an aluminum alloy part according to any one of claims 1 to 4, wherein the alloy is an alloy having a chemical component of 0 to 1.5% by weight of copper, the balance being aluminum.
る合金とされ、ゲルマニウム、銅、珪素、マグネシウム
のうちの少なくても一つの元素を含むものとされること
を特徴とする請求項1から5のいずれか記載のアルミニ
ウム合金部品の補修方法。6. The brazing material according to claim 1, wherein the brazing material is an aluminum-based alloy and contains at least one of germanium, copper, silicon and magnesium. 6. The method for repairing an aluminum alloy part according to any one of claims 1 to 5.
重量%、珪素:5〜20重量%、マグネシウム:0.5
〜1.5重量%、銅:0.5〜1.5重量%、残部がア
ルミニウムである化学成分の合金であることを特徴とす
る請求項6記載のアルミニウム合金部品の補修方法。7. The brazing material (2) is germanium: 0 to 50.
% By weight, silicon: 5 to 20% by weight, magnesium: 0.5
7. The method for repairing an aluminum alloy part according to claim 6, wherein the alloy is an alloy having a chemical composition of 1.5 to 1.5% by weight, copper: 0.5 to 1.5% by weight, and the balance being aluminum.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23824696A JPH1080827A (en) | 1996-09-09 | 1996-09-09 | Repairing method of aluminium alloy part |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23824696A JPH1080827A (en) | 1996-09-09 | 1996-09-09 | Repairing method of aluminium alloy part |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH1080827A true JPH1080827A (en) | 1998-03-31 |
Family
ID=17027326
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JP23824696A Pending JPH1080827A (en) | 1996-09-09 | 1996-09-09 | Repairing method of aluminium alloy part |
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FR2912674A1 (en) * | 2007-02-20 | 2008-08-22 | Snecma Services Sa | METHOD FOR RECHARGING AN ALUMINUM ALLOY PIECE |
JP2009101422A (en) * | 2009-01-15 | 2009-05-14 | Showa Denko Kk | Method for treating welding terminal of friction stir welding |
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-
1996
- 1996-09-09 JP JP23824696A patent/JPH1080827A/en active Pending
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6234199B1 (en) | 1998-12-12 | 2001-05-22 | Aisin Seiki Kabushiki Kaisha | Hydraulic pressure control unit |
FR2912674A1 (en) * | 2007-02-20 | 2008-08-22 | Snecma Services Sa | METHOD FOR RECHARGING AN ALUMINUM ALLOY PIECE |
EP1961513A1 (en) * | 2007-02-20 | 2008-08-27 | Snecma Services | Method of recharging an aluminium alloy part |
US8502104B2 (en) | 2007-02-20 | 2013-08-06 | Snecma Services | Method of building up an aluminum alloy part |
JP2009101422A (en) * | 2009-01-15 | 2009-05-14 | Showa Denko Kk | Method for treating welding terminal of friction stir welding |
JP2011093041A (en) * | 2009-10-29 | 2011-05-12 | Kobe Steel Ltd | Local cooling method |
CN104439886A (en) * | 2014-10-21 | 2015-03-25 | 山东钢铁股份有限公司 | Sticking and reinforcing device and sticking and repairing method for cracks on cast iron outer shell of diffusion pump of vacuum furnace |
CN104439886B (en) * | 2014-10-21 | 2016-08-17 | 山东钢铁股份有限公司 | A kind of vacuum drying oven diffusion pump cast iron housing crackle strengthening with external bonding device and crackle Bonded Repair method |
CN107971693A (en) * | 2017-11-23 | 2018-05-01 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of wheel chamber casing crackle repair method of titanium alloy inlet casing |
CN107971693B (en) * | 2017-11-23 | 2019-03-15 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of wheel chamber casing crackle repair method of titanium alloy inlet casing |
KR102380083B1 (en) * | 2021-09-30 | 2022-03-29 | 이준화 | METHOD FOR MENDING DEFECT OF base material |
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