JPH049636B2 - - Google Patents
Info
- Publication number
- JPH049636B2 JPH049636B2 JP25795585A JP25795585A JPH049636B2 JP H049636 B2 JPH049636 B2 JP H049636B2 JP 25795585 A JP25795585 A JP 25795585A JP 25795585 A JP25795585 A JP 25795585A JP H049636 B2 JPH049636 B2 JP H049636B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- copper plate
- heat
- deformation prevention
- base material
- 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 32
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 229910052802 copper Inorganic materials 0.000 claims description 23
- 239000010949 copper Substances 0.000 claims description 23
- 238000003466 welding Methods 0.000 claims description 22
- 230000002265 prevention Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 8
- 239000010953 base metal Substances 0.000 claims 1
- 239000011324 bead Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 206010070670 Limb asymmetry Diseases 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling 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
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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例えば第２図に示す
如く行なわれている。
Conventionally, narrow gap members are welded as shown in FIG. 2, for example.
図中の１は、上部にリブ２を有した母材（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。ここで、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
り行つている。 1 in the figure is a base material (lower plate) having 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 on the groove 3. Here, when welding the base material 1 and the upper plate 4, a water-soluble deformation prevention material 6 for preventing welding deformation and a heat-resistant flux layer 7 for forming a back wave are placed in the narrow gap. 8
This is done by setting the back wave leg length L as low as required for the purpose.
しかしながら、従来技術によれば、大電流で溶
接した場合、第５図に示す如く不等脚長や大きい
裏波ビード９が形成されるという欠点を有する。
However, the prior art has the disadvantage that when welding with a large current, unequal leg lengths and large uranami beads 9 are formed as shown in FIG.
こうしたことから、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し
ないものを裏当て材として設ける必要があつた。 For this reason, in order to obtain a Uranami bead with high dimensional accuracy, it was necessary to provide a backing material that would not melt even when the Uranami bead came into contact with it.
本発明は上記事情に鑑みてなされたもので、寸
法精度が正確な裏波ビードが得られる等種々の効
果を有した狭間隙部材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 it is an object of the present invention to provide a method for welding narrow-gap members that has various effects such as obtaining a Uranami bead with accurate dimensional accuracy.
本発明は、狭間隙部で母材上のリブ上面が銅板
上面と一致せしめるように、また同銅板下面及び
非リブ側に耐熱性粒子層を、更に同耐熱性紛子層
下面及び非リブ側に水溶解性変形防止材を同母材
上に階層状に配設して溶接を行うことを特徴と
し、もつて寸法精度が正確な裏波ビードの形成を
図つたものである。
The present invention provides a heat-resistant particle layer on the lower surface of the copper plate and the non-rib side so that the upper surface of the rib on the base material coincides with the upper surface of the copper plate in the narrow gap part, and furthermore, The method is characterized in that a water-soluble deformation prevention material is arranged in layers on the same base material and then welded, thereby forming a Uranami bead with accurate dimensional accuracy.
本発明によれば、必要とする裏波ビードの寸法
形状に成形加工した銅板を設けることにより、寸
法精度の高い裏波ビードを得ることができる。ま
た、水溶解性変形防止材と銅板の間に耐熱性粒子
層を充填することにより、銅板を正確に設定する
ことができる。更に、熱吸収した銅板が水溶解性
変形防止材に直接接触した場合には、前記変形防
止材が熱変化して溶接に有害なガスを発生する
が、耐熱性粒子層を中間に充填することにより、
これを防止することができる。
According to the present invention, by providing a copper plate that is formed into the required size and shape of the Uranami bead, it is possible to obtain the Uranami bead with high dimensional accuracy. Moreover, by filling the heat-resistant particle layer between the water-soluble deformation prevention material and the copper plate, the copper plate can be set accurately. Furthermore, when a heat-absorbing copper plate comes into direct contact with a water-soluble deformation prevention material, the deformation prevention material changes due to heat and generates gas harmful to welding. According to
This can be prevented.
以下、本発明の一実施例を第１図及び第３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 3.
図中の１１は、上部に高さ10mmのリブ１２を有
する例えばCr−Mo鋼からなる母材（下板）であ
る。前記母材１１上には、開先１３を有した例え
ばCr−Mo鋼からなる上板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。 Reference numeral 11 in the figure is a base material (lower plate) made of, for example, Cr-Mo steel and has a rib 12 with a height of 10 mm on the upper part. An upper plate 14 made of, for example, Cr-Mo steel and 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、まず狭開先部に市販の鋳物用崩解石
膏、具体的にはSiO2：50％，CaSO4・１／
2H2O：50％からなる水溶解性変形成防止材１６
を用いてリブ１２の近傍に幅10mm、深さ８mmの溝
１７を形成した。つづいて、この溝１７にCaF2，
MgO，TiO2を主成分とする市販フラツクスから
なる裏波溶接用の耐熱性粒子層１８を約３mm厚さ
に充填し、その上に一角を面取りした幅８mm、厚
さ６mmの銅板１９を裏当て材として置き、その上
面がリブ１２の高さと一致するように押しつけ
た。その後、銅板１９の側面と前記変形防止材１
６のすきまにも耐熱性粒子層を充填し銅板１９が
リブ１２に密着するようにした。そして、このよ
うな状態で上板１４を合わせTIG溶接を行つた。
その結果、第４図に示すような断面形状で脚長２
mmの正確な裏波ビード２０が得られた。 That is, in this embodiment, when welding the base material 11 and the upper plate 14, first, commercially available disintegrated gypsum for casting, specifically SiO 2 :50%, CaSO 4 1/2, is applied to the narrow groove part.
Water-soluble deformation prevention material 16 consisting of 2H 2 O: 50%
Grooves 17 having a width of 10 mm and a depth of 8 mm were formed near the ribs 12 using a groove. Next, in this groove 17, CaF 2 ,
A heat-resistant particle layer 18 for Uranami welding made of a commercially available flux containing MgO and TiO 2 as main components is filled to a thickness of approximately 3 mm, and a copper plate 19 with a width of 8 mm and a thickness of 6 mm with one corner chamfered is placed on the back side. It was placed as a backing material and pressed so that its upper surface matched the height of the rib 12. After that, the side surface of the copper plate 19 and the deformation prevention material 1 are
The gap 6 was also filled with a layer of heat-resistant particles so that the copper plate 19 was brought into close contact with the rib 12. Then, in this state, the upper plate 14 was put together and TIG welding was performed.
As a result, the cross-sectional shape shown in Figure 4 has a leg length of 2.
An accurate Uranami bead 20 of mm was obtained.
本発明によれば、以下に示す効果を有する。 According to the present invention, the following effects are achieved.
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
あるいは軟化され容易に除去できる。 By providing the water-soluble deformation prevention material 16 in the narrow gap, shrinkage deformation during welding can be prevented, and an accurate narrow gap height can be maintained. Moreover, by immersing it in water after welding, the deformation preventing material 16 is disintegrated or softened and can be easily removed.
必要とする裏波ビードの形状寸法に成形した
鋼板１９を裏当て材として設けるため、正確な
裏波ビードが得られる。以下、これについて説
明する。即ち、銅の溶融金属の温度は約1500℃
程度であるが、それは溶接部直下の局部的なも
のである。一方、銅板１９は融点約1100℃であ
るが、熱伝導率が良いため、溶接による溶融金
属が接触してもその接触面の温度を十分吸収し
て凝固させ、裏波ビードとして形成することが
できる。そこで、必要とする裏波ビードの形状
寸法に成形加工した銅板１９を裏当て材として
設けることにより、寸法精度の高い裏波ビード
を得ることができるものである。 Since the steel plate 19 formed into the required shape and dimensions of the uranami bead is provided as a backing material, an accurate uranami bead can be obtained. This will be explained below. In other words, the temperature of molten copper metal is approximately 1500℃
However, it is localized just below the weld. On the other hand, the copper plate 19 has a melting point of approximately 1100°C, but because of its good thermal conductivity, even when molten metal comes into contact with it, it can sufficiently absorb the temperature of the contact surface and solidify, forming a Uranami bead. can. Therefore, by providing as a backing material a copper plate 19 that has been molded into the required shape and dimensions of the uranami bead, it is possible to obtain the uranami bead with high dimensional accuracy.
銅板１９と変形防止材１６の間に耐熱性粒子
層１８を設けているため、銅板１９を正確に設
定できる。また、同様の理由より、熱吸収した
銅板１９が前記変形防止材１６に直接接触した
場合には、変形防止材１６が熱変化して溶接に
有害なガスを発生するが、前記耐熱性粒子層１
８によりこれを防止できる。 Since the heat-resistant particle layer 18 is provided between the copper plate 19 and the deformation prevention material 16, the copper plate 19 can be set accurately. Furthermore, for the same reason, when the heat-absorbing copper plate 19 comes into direct contact with the deformation prevention material 16, the deformation prevention material 16 changes due to heat and generates gas harmful to welding. 1
8 can prevent this.
なお、上記実施例では、裏当て材として銅板
を用いたが、これに限らず、冷却効果を促進す
るものとして水冷銅板を用いても良い。 In the above embodiment, a copper plate was used as the backing material, but the material is not limited to this, and a water-cooled copper plate may be used to promote the cooling effect.
また、上記実施例との比較する上で第６図に
示すようにリブ１２の高さと同じ高さの銅板
（裏当て材）１９を用いた場合には、変形防止
材１６で防止し得なかつたわずかな溶接収縮変
形により銅板１９が母材１１と上板１４に狭ま
れ、これを除去するのが困難であつた。 Further, in comparison with the above embodiment, when a copper plate (backing material) 19 having the same height as the rib 12 is used as shown in FIG. Due to slight welding shrinkage deformation, the copper plate 19 was squeezed between the base material 11 and the upper plate 14, making it difficult to remove.
以上詳述した如く本発明によれば、寸法精度が
正確な裏波ビードが得られる等種々の効果を有し
た狭間隙部材の溶接方法を提供できる。
As described in detail above, according to the present invention, it is possible to provide a welding method for narrow-gap members that has various effects such as obtaining 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斜視
図、第３図は第１図の溶接部の断面図、第４図は
本発明法による溶接部の断面図、第５図は従来法
による欠点を説明するための断面図、第６図はリ
ブの高さと同じ高さの銅板を用いた場合を説明す
るための断面図である。
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
止材、１７…溝、１８…耐熱性粒子層、１９…銅
板、２０…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. 3 is a perspective view for explaining a conventional welding method for a narrow gap member. Fig. 1 is a sectional view of the welded part, Fig. 4 is a sectional view of the welded part by the method of the present invention, Fig. 5 is a sectional view to explain the drawbacks of the conventional method, and Fig. 6 is the same height as the rib height. FIG. 3 is a cross-sectional view for explaining a case where a copper plate of 300 mm is used. 11... Base material, 12... Rib, 13... Bevel, 14...
Upper plate, 15...Weld metal layer, 16...Water-soluble deformation prevention material, 17...Groove, 18...Heat-resistant particle layer, 19...Copper plate, 20...Uranami bead.
Claims (1)
部で母材上のリブ上面が銅板上面と一致せしめる
ように、また同銅板下面及び非リブ側に耐熱性粒
子層を、更に同耐熱性粒子層下面及び非リブ側に
水溶解性変形防止材を同母材上に階層状に配設し
て溶接を行うことを特徴とする狭間〓部材の溶接
方法。1 Gap = In the method of welding parts, Gap =
In order to make the upper surface of the ribs on the base metal match the upper surface of the copper plate, a heat-resistant particle layer is applied to the lower surface of the copper plate and the non-rib side, and a water-soluble deformation prevention material is applied to the lower surface of the heat-resistant particle layer and the non-rib side. A welding method for welding parts, which is characterized in that welding is performed by arranging and welding in a hierarchical manner on the same base material.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25795585A JPS62118974A (en) | 1985-11-18 | 1985-11-18 | 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 |
|---|---|---|---|
| JP25795585A JPS62118974A (en) | 1985-11-18 | 1985-11-18 | Welding method for narrow gap member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62118974A JPS62118974A (en) | 1987-05-30 |
| JPH049636B2 true JPH049636B2 (en) | 1992-02-20 |
Family
ID=17313531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25795585A Granted JPS62118974A (en) | 1985-05-16 | 1985-11-18 | Welding method for narrow gap member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62118974A (en) |
Families Citing this family (1)
| 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 |
-
1985
- 1985-11-18 JP JP25795585A patent/JPS62118974A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62118974A (en) | 1987-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |