JPH0413472A - Liquid phase diffusion brazing method - Google Patents
Liquid phase diffusion brazing methodInfo
- Publication number
- JPH0413472A JPH0413472A JP11581590A JP11581590A JPH0413472A JP H0413472 A JPH0413472 A JP H0413472A JP 11581590 A JP11581590 A JP 11581590A JP 11581590 A JP11581590 A JP 11581590A JP H0413472 A JPH0413472 A JP H0413472A
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- liquid phase
- powder
- eutectic
- phase diffusion
- 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 39
- 238000009792 diffusion process Methods 0.000 title claims abstract description 23
- 239000007791 liquid phase Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 11
- 230000005496 eutectics Effects 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000004904 shortening Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract 2
- 230000008033 biological extinction Effects 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 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〕
本発明はエンジン部分等の耐熱合金の液相拡散ろう付に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to liquid phase diffusion brazing of heat resistant alloys for engine parts and the like.
従来、耐熱合金の液相拡散ろう付では、ろう付部ろう付
部に共晶が残るが、この共晶はろう付部の機械的特性を
低めるため、共晶消滅処理を設定処理温度で共晶がろう
材中の融点低下元素の母材中への拡散により消滅するま
で長時間を資して行っていた。Conventionally, in liquid phase diffusion brazing of heat-resistant alloys, eutectic remains in the brazed part, but this eutectic reduces the mechanical properties of the brazed part, so the eutectic disappearing treatment is carried out at the set processing temperature. The process took a long time until the crystals disappeared due to the diffusion of the melting point lowering element in the brazing filler metal into the base metal.
上述したように、耐熱合金の液相拡散ろう付におけるろ
う付部の共晶消滅処理（拡散処理〉時間は著しく長いと
いう問題点が従来技術にはあった。As described above, the prior art has a problem in that the time required for the eutectic extinction treatment (diffusion treatment) of the brazed portion in liquid phase diffusion brazing of heat-resistant alloys is extremely long.
本発明は上記技術水準に鑑み、共晶消滅処理時間を短縮
することができる耐熱鋼の液相拡散ろう付法を提供しよ
うとするものである。In view of the above-mentioned state of the art, the present invention seeks to provide a liquid phase diffusion brazing method for heat-resistant steel that can shorten the eutectic annihilation treatment time.
本発明は耐熱鋼の液相拡散ろう付法において、ろう付を
２回行い、２回目のろう付においてはＮｉ粉末とろう材
の混合粉末を第１回目のろう付フィレット部において、
ろう付し、その後共晶消滅処理（拡散処理）を行いＮ１
粉末にろう材（ＢＮｉ：ニッケルろう材）中の融点低下
元素（Ｂ、Ｓｉなど）を拡散させることにより共晶消滅
にひつような時間を大幅に低減させる方法である。In the liquid phase diffusion brazing method of heat-resistant steel, the present invention performs brazing twice, and in the second brazing, a mixed powder of Ni powder and brazing filler metal is applied to the first brazing fillet.
After brazing, eutectic extinction treatment (diffusion treatment) is performed to obtain N1
This method significantly reduces the time required for eutectic extinction by diffusing melting point lowering elements (B, Si, etc.) in a brazing filler metal (BNi: nickel brazing filler metal) into powder.
耐熱合金の液相拡散ろう付のろう何部の共晶は、共晶消
滅処理（拡散処理）において、フィレッ）Ｒに最後まで
残る傾向にある。すなわち、ろうフィレット部はろう材
量が多く、拡散させなければならないろう材中の融点低
下元素の量も多くなり、その結果、フィレット部の共晶
消滅が最も遅くなる。The eutectic of the brazing part in liquid phase diffusion brazing of heat-resistant alloys tends to remain in the fillet R until the end in the eutectic extinction treatment (diffusion treatment). That is, the amount of brazing material in the fillet portion is large, and the amount of melting point lowering elements in the brazing material that must be diffused is also large, and as a result, eutectic extinction in the fillet portion is slowest.
本発明方法によれば、Ｎｉ粉末がろう材中の融点低下元
素の吸蔵材として機能するため、フィレット近傍の共晶
消滅を促進する効果が得られる。According to the method of the present invention, since the Ni powder functions as an occluding material for the melting point lowering element in the brazing filler metal, it is possible to obtain the effect of promoting eutectic disappearance in the vicinity of the fillet.
以下、本発明の一実施例として、ジェットエンジンのベ
ーンアッセンブリー（Ｖａｎｅ Ａｓｓｅｍｂｌｙ）液
相拡散部の補修を例にとって説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below, taking as an example the repair of a liquid phase diffusion part of a vane assembly of a jet engine.
ジェットエンジンのベーンアッセンブリー液相拡散ろう
何部にクラックが生じたため再ろう付を行い補修した。A crack occurred in the liquid phase diffusion brazing part of the vane assembly of a jet engine, so it was repaired by re-brazing.
その手順を下記に示す。母材はインコネル７１３Ｃであ
る。The procedure is shown below. The base material is Inconel 713C.
■ クラック部をワイヤカットにスリットを人れ削除す
る。■ Wire-cut the crack and remove the slit.
■ 上記スリット部の内部までろう材（Ｎｉ−Ｃｒ−Ｃ
ｏ−Ｂ系）を塗布し真空ろう付（１２００℃×３０分）
する。■ Filler metal (Ni-Cr-C
o-B series) and vacuum brazing (1200℃ x 30 minutes)
do.
■ 上記ろう付表面部にＮｉ粉末と同じろう材との混合
粉末を塗布しろう付（１２００℃×３０分）する。(2) Apply a mixed powder of Ni powder and the same brazing material to the above brazing surface and braze (1200°C x 30 minutes).
■、ＨＩＰ （１２００℃×５時間Ｘ１５００ｋｇｆ／
ｃｍ” ）する。■, HIP (1200℃ x 5 hours x 1500kgf/
cm”).
■ 共晶消滅処理（拡散処理）を１１８５℃×２０時間
行う。■ Perform eutectic extinction treatment (diffusion treatment) at 1185°C for 20 hours.
第１画賛に補修後の補修ろう何部の断面の金属組織の顕
微鏡写真（５０倍）の模式図を示す。The first image shows a schematic diagram of a micrograph (50x magnification) of the metallographic structure of a cross section of the repaired wax after repair.
共晶は消滅している。フィレット部はこのうち機械加工
にて削除する。The eutectic has disappeared. The fillet part will be removed by machining.
なお、同一プロセスでただしＮ１粉末を用いなかった場
合（つまり上記プロセスで■を行わなかった）の補修ろ
う何部の断面の金属組織の顕微鏡写真（５０倍）の模式
図を第２図に示す。Furthermore, Figure 2 shows a schematic diagram of a micrograph (50x magnification) of the metal structure of the cross section of the repaired wax when the same process was performed but N1 powder was not used (in other words, step (■) was not performed in the above process). .
共晶消滅処理（拡散処理）を１１８５℃×４０時間行っ
ても一部まだ共晶が残存した。Even when the eutectic extinction treatment (diffusion treatment) was performed at 1185° C. for 40 hours, some eutectic still remained.
本発明により、耐熱合金の液相拡散ろう付における共晶
消滅処理（拡散処理）時間を大幅に短縮できる。According to the present invention, the time for eutectic extinction treatment (diffusion treatment) in liquid phase diffusion brazing of heat-resistant alloys can be significantly shortened.
第１図は本発明の一実施例の液相拡散ろう何部断面の金
属組織の模式図である。
第２図はＮｉ粉末を用いない従来法の液相拡散ろう何部
断面の金属組織の模式図である。FIG. 1 is a schematic diagram of a metal structure in a cross section of a liquid phase diffusion wax according to an embodiment of the present invention. FIG. 2 is a schematic diagram of the metal structure of a cross section of a liquid phase diffusion wax in a conventional method that does not use Ni powder.
Claims (1)
、２回目のろう付においてはＮｉ粉末をろう付フィレッ
ト部におき、ろう材中の融点低下元素の吸蔵剤として機
能させることによりろう付部の共晶消滅熱処理時間を大
幅に短縮することを特徴とする耐熱鋼の液相拡散ろう付
法。In the liquid phase diffusion brazing method for heat-resistant steel, brazing is performed twice, and during the second brazing, Ni powder is placed in the brazing fillet to function as an occlusion agent for elements that lower the melting point in the brazing filler metal. A liquid phase diffusion brazing method for heat-resistant steel that is characterized by significantly shortening the eutectic annihilation heat treatment time of the brazed part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11581590A JPH0413472A (en) | 1990-05-07 | 1990-05-07 | Liquid phase diffusion brazing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11581590A JPH0413472A (en) | 1990-05-07 | 1990-05-07 | Liquid phase diffusion brazing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0413472A true JPH0413472A (en) | 1992-01-17 |
Family
ID=14671788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11581590A Pending JPH0413472A (en) | 1990-05-07 | 1990-05-07 | Liquid phase diffusion brazing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0413472A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015039722A (en) * | 2013-08-23 | 2015-03-02 | トヨタ自動車株式会社 | Brazing method of aluminium heat exchanger |
-
1990
- 1990-05-07 JP JP11581590A patent/JPH0413472A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015039722A (en) * | 2013-08-23 | 2015-03-02 | トヨタ自動車株式会社 | Brazing method of aluminium heat exchanger |
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