JPH0366065B2 - - Google Patents
Info
- Publication number
- JPH0366065B2 JPH0366065B2 JP24641185A JP24641185A JPH0366065B2 JP H0366065 B2 JPH0366065 B2 JP H0366065B2 JP 24641185 A JP24641185 A JP 24641185A JP 24641185 A JP24641185 A JP 24641185A JP H0366065 B2 JPH0366065 B2 JP H0366065B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- water
- narrow gap
- uranami
- deformation
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 31
- 238000003466 welding Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 13
- 239000000919 ceramic Substances 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 239000011324 bead Substances 0.000 description 11
- 230000002265 prevention Effects 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910005347 FeSi Inorganic materials 0.000 description 1
- 206010070670 Limb asymmetry Diseases 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は狭間隙部材の溶接方法に関し、特にコ
ンプレツサ・インペラの製造に適用されるもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for welding narrow gap members, and is particularly applicable to the manufacture of compressor impellers.
従来、狭間隙部材の溶接は第２図に示す如く行
なわれている。
Conventionally, narrow gap members are welded as shown in FIG.
図中の１は、上部にリブ２を設けた母材（下
板）である。前記母材１上には、開先３を有した
上板４が設けられている。なお、図中の５は開先
３に形成される溶接金属層である。こうした母材
１と上板４を溶接する際は、狭間隙部に溶接変形
を防止するための水溶解性変形防止材６及び裏波
を形成するための耐熱性フラツクス層７を、溝８
に必要とする裏波脚長(L)だけ低く設けることによ
り行つていた。 1 in the figure is a base material (lower plate) provided with ribs 2 on the upper part. An upper plate 4 having grooves 3 is provided on the base material 1 . Note that 5 in the figure is a weld metal layer formed in the groove 3. When welding the base material 1 and the upper plate 4, a water-soluble deformation prevention material 6 for preventing welding deformation in the narrow gap and a heat-resistant flux layer 7 for forming a back wave are placed in the groove 8.
This was done by setting the back wave leg length (L) as low as necessary.
しかしながら、従来技術によれば以下に示す問
題点を有する。
However, the prior art has the following problems.
大電流で溶接した場合、第３図に示す如く不
等脚長や設定フラツクス層の充填高さよりも大
きい裏波ビード９が形成される。 When welding is carried out with a large current, as shown in FIG. 3, a Uranami bead 9 is formed which is larger than the unequal leg length or the filling height of the set flux layer.
充填されたフラツクス層が粉末のままの場
合、下向姿勢の溶接では良いが、立向姿勢等で
はフラツクス層が移動し溶接に供し得ない。 If the filled flux layer remains as a powder, welding in a downward position is fine, but in a vertical position, the flux layer moves and cannot be used for welding.
こうしたことから、より美麗で寸法精度の高い
裏波ビードを得るためには裏波ビードが接触して
も溶融せず、又固化されている裏当て材を設ける
必要があつた。 For this reason, in order to obtain a more beautiful Uranami bead with high dimensional accuracy, it has been necessary to provide a backing material that does not melt when the Uranami bead comes into contact with it and is solidified.
本発明は上記事情に鑑みてなされたもので、正
確な狭間隙高さを保持し得るとともに、寸法精度
が正確な裏波ビードが得られる狭間隙部の溶接方
法を提供することを目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a welding method for a narrow gap part that can maintain an accurate narrow gap height and obtain a uranami bead with accurate dimensional accuracy. .
〔問題点を解決するための手段〕
本発明は、狭開先部に溶接変形を防止する水溶
解性変形防止材を設け、この水溶解性変形防止材
の上に裏波の寸法形状に成形した耐熱性セラミツ
クス製の裏当て材を設けて溶接を行うことを特徴
とし、もつて正確な狭間隙高さの保持、正確な裏
波ビードの形成を図つたものである。[Means for Solving the Problems] The present invention provides a water-soluble deformation prevention material for preventing welding deformation in the narrow groove portion, and molds the water-soluble deformation prevention material into the size and shape of Uranami on the water-soluble deformation prevention material. This method is characterized in that a backing material made of heat-resistant ceramics is provided and welding is performed, thereby maintaining an accurate narrow gap height and forming an accurate Uranami bead.
本発明によれば、狭間隙部に水溶解性変形防止
材を設けることにより、溶接時の収縮変形を防止
でき、正確な狭間隙高さが保たれる。また、溶接
後水に浸漬することにより変形防止材は崩解およ
び軟化され容易に除去できる。更に変形防止材の
上に必要とする裏波の寸法・形状に成形した鋼の
融点より高い融点の耐熱性セラミツクスを裏当て
材として設けているため溶接により正確な裏波ビ
ードが得られる。
According to the present invention, by providing a water-soluble deformation preventing material in the narrow gap portion, shrinkage deformation during welding can be prevented and an accurate narrow gap height can be maintained. Further, by immersing the material in water after welding, the deformation prevention material is disintegrated and softened, and can be easily removed. Further, since a heat-resistant ceramic having a melting point higher than that of the steel formed into the required size and shape of the backing material is provided on the deformation prevention material as a backing material, an accurate backing bead can be obtained by welding.
以下、本発明の一実施例を第１図及び第５図を
参照して説明する。
An embodiment of the present invention will be described below with reference to FIGS. 1 and 5.
図中の１１は、上部にリブ１２を設けた例えば
Cr−Mo鋼からなる母材である。前記母材１１上
には、開先１３を有した上板１４が設けられてい
る。なお、図中の１５は、開先１３に形成される
溶接金属層である。 11 in the figure is an example in which a rib 12 is provided on the upper part.
The base material is made of Cr-Mo steel. An upper plate 14 having a groove 13 is provided on the base material 11. Note that 15 in the figure is a weld metal layer formed in the groove 13.
即ち、本実施例では母材１１と上板１４を溶接
する際は、まず狭開先部に鋳物用崩解石膏からな
る水溶解性変形防止材１６を用いて面取り溝１７
を形成した。つづいて、粒径5μｍ以下のアルミ
ナ（Al2O3、融点約2000℃）粉末に体積比で30％
の水ガラスを混練したもの、即ち鋼の融点より高
い融点の耐熱セラミツク層１８を、裏当て材とし
て前記面取り溝１７に充填した。なお、耐熱セラ
ミツク層１８は溶接時の裏波ビードの温度（約
1500℃）に耐えうる。また、この時、第５図に示
す如く必要とする裏波形状１９の治具２０をリブ
１２上に置いてつき固め、その後第６図に示す如
く治具２０をはずして炭酸ガス（CO2ガス）を５
分間吹きつけ固化させた。そして、このような状
態で上板１４を合わせてTIG溶接した。その結
果、第４図に示すような断面形状で寸法精度が正
確な脚長２mmの裏波ビード２１が得られた。 That is, in this embodiment, when welding the base material 11 and the upper plate 14, first the chamfered groove 17 is formed in the narrow groove using a water-soluble deformation preventing material 16 made of disintegrated gypsum for castings.
was formed. Next, add 30% by volume to alumina (Al 2 O 3 , melting point approximately 2000℃) powder with a particle size of 5 μm or less.
The chamfered groove 17 was filled with a heat-resistant ceramic layer 18 having a melting point higher than that of steel as a backing material. In addition, the heat-resistant ceramic layer 18 is heated at a temperature of the Uranami bead during welding (approximately
1500℃). Also, at this time, as shown in FIG. 5, a jig 20 with the required Uranami shape 19 is placed on the rib 12 and compacted, and then, as shown in FIG. 6, the jig 20 is removed and carbon dioxide gas (CO 2 gas) 5
Spray for a minute to solidify. Then, in this state, the upper plate 14 was put together and TIG welded. As a result, a Uranami bead 21 having a cross-sectional shape as shown in FIG. 4, accurate dimensional accuracy, and leg length of 2 mm was obtained.
本発明によれば、狭間隙部に水溶解性変形防止
材１６を設けることにより、溶接時の収縮変形を
防止でき正確な狭間隙高さが保たれる。また、溶
接後水に浸漬することにより前記変形防止材１６
は崩解及び軟化され、容易に除去できる。更に、
前記変形防止材１６の上に必要とする裏波の寸
法・形状に形成した耐熱性セラミツク層１８を裏
当て材として設けるため、溶接により正確な裏波
ビード２１が得られる。更には、水ガラスを粘結
材として炭酸ガスで固化するため、室温にて複雑
な形状の裏当て材が容易に成形できる。 According to the present invention, by providing the water-soluble deformation preventing material 16 in the narrow gap, shrinkage deformation during welding can be prevented and an accurate narrow gap height can be maintained. In addition, the deformation prevention material 16 can be immersed in water after welding.
is disintegrated and softened and can be easily removed. Furthermore,
Since the heat-resistant ceramic layer 18 formed in the required size and shape of the Uranami is provided as a backing material on the deformation prevention material 16, an accurate Uranami bead 21 can be obtained by welding. Furthermore, since water glass is used as a caking agent and solidified with carbon dioxide gas, a backing material with a complicated shape can be easily formed at room temperature.
なお、上記実施例では、セラミツクス固化法を
用いたが、これに限らず、一般に用いられる金型
にセラミツク粉末を充填し焼成したセラミツクの
裏当て材としてもよい。また、セラミツクスはア
ルミナ以外を用いてもよい。 In the above embodiment, a ceramic solidification method is used, but the method is not limited to this, and the backing material may be made of ceramic, which is obtained by filling a commonly used mold with ceramic powder and firing it. Furthermore, ceramics other than alumina may be used.
また、上記実施例では、CO2ガスより水ガスを
硬化させたが、これに限らない。例えば、セメン
ト、ある種のスラグ（主成分は2CaO・SiO2）、
Al、Si、FeSi等、いわゆる自硬性の硬化材を添
加して水ガラスを硬化させる方法も適用できる。 Further, in the above embodiment, water gas was cured by CO 2 gas, but the present invention is not limited to this. For example, cement, certain types of slag (main component is 2CaO・SiO 2 ),
A method of hardening water glass by adding a so-called self-hardening material such as Al, Si, or FeSi can also be applied.
以上詳述した如く本発明によれば、正確な狭間
隙高さを保持し得るとともに、寸法精度が正確な
裏波ビードが得られる狭間隙部材の溶接方法を提
供することを目的とする。
As described in detail above, it is an object of the present invention to provide a method for welding narrow-gap members that can maintain an accurate narrow-gap height and obtain a uranami bead with accurate dimensional accuracy.
第１図は本発明の一実施例に係る狭間隙部材の
溶接方法を説明するための斜視図、第２図は従来
の狭間隙部材の溶接方法を説明するための視斜
図、第３図は従来法による溶接部の断面図、第４
図は本発明法による溶接部の断面図、第５図及び
第６図は本発明の一実施例に係る狭間隙部材の溶
接方法を工程順に示す断面図である。
１１……母材、１２……リブ、１３……開先、
１４……上板、１５……溶接金属層、１６……水
溶解性変形防止剤、１７……溝、１８……耐熱セ
ラミツクス層、１９……裏波形状、２０……治
具、２１……裏波ビード。
FIG. 1 is a perspective view for explaining a welding method for a narrow gap member according to an embodiment of the present invention, FIG. 2 is a perspective view for explaining a conventional welding method for a narrow gap member, and FIG. is a cross-sectional view of the welded part by the conventional method,
FIG. 5 is a cross-sectional view of a welded part according to the method of the present invention, and FIGS. 5 and 6 are cross-sectional views showing a method for welding a narrow gap member according to an embodiment of the present invention in the order of steps. 11... Base material, 12... Rib, 13... Bevel,
14...Top plate, 15...Weld metal layer, 16...Water-soluble deformation preventive agent, 17...Groove, 18...Heat-resistant ceramic layer, 19...Uranami shape, 20...Jig, 21... ...Uranami bead.
Claims (1)
部に溶接変形を防止する水溶解性変形防止材を設
け、この水溶解性変形防止材の上に裏波の寸法形
状に成形した耐熱性セラミツクス製の裏当て材を
設けて溶接を行うことを特徴とする狭間隙部材の
溶接方法。1. In the method of welding narrow gap members, a water-soluble deformation preventing material is provided in the narrow groove portion to prevent welding deformation, and heat-resistant ceramics are formed on top of the water-soluble deformation preventing material in the size and shape of Uranami. A method for welding narrow gap members, characterized by performing welding with a backing material made of aluminum.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24641185A JPS62107866A (en) | 1985-11-05 | 1985-11-05 | Welding method for narrow gap member |
| US06/831,589 US4754118A (en) | 1985-05-16 | 1986-02-21 | Method for fabricating a structural assembly having narrow gaps |
| IT47727/86A IT1190224B (en) | 1985-05-16 | 1986-03-06 | METHOD FOR BUILDING A STRUCTURAL COMPLEX HAVING CLOSE INTERSPACES |
| FR868603359A FR2581906B1 (en) | 1985-05-16 | 1986-03-10 | METHOD FOR MANUFACTURING A NARROW INTERVALS STRUCTURE ASSEMBLY |
| DE19863608449 DE3608449A1 (en) | 1985-05-16 | 1986-03-11 | METHOD FOR ASSEMBLING ELEMENTS |
| CN86101601.7A CN1006533B (en) | 1985-05-16 | 1986-03-12 | Method of manufacturing structural elements with narrow gaps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24641185A JPS62107866A (en) | 1985-11-05 | 1985-11-05 | Welding method for narrow gap member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62107866A JPS62107866A (en) | 1987-05-19 |
| JPH0366065B2 true JPH0366065B2 (en) | 1991-10-16 |
Family
ID=17148087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24641185A Granted JPS62107866A (en) | 1985-05-16 | 1985-11-05 | Welding method for narrow gap member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62107866A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5061836B2 (en) | 2007-10-10 | 2012-10-31 | 株式会社日立プラントテクノロジー | Impeller welding method and impeller |
| DE102009010025B4 (en) | 2009-02-21 | 2011-06-22 | MTU Aero Engines GmbH, 80995 | A method of manufacturing an integrally bladed rotor |
-
1985
- 1985-11-05 JP JP24641185A patent/JPS62107866A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62107866A (en) | 1987-05-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |