JPS61262465A - Method for welding and assembling narrow gap member - Google Patents
Method for welding and assembling narrow gap memberInfo
- Publication number
- JPS61262465A JPS61262465A JP10446585A JP10446585A JPS61262465A JP S61262465 A JPS61262465 A JP S61262465A JP 10446585 A JP10446585 A JP 10446585A JP 10446585 A JP10446585 A JP 10446585A JP S61262465 A JPS61262465 A JP S61262465A
- Authority
- JP
- Japan
- Prior art keywords
- narrow gap
- welding
- members
- water
- assembled
- 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は狭間隙を有する構造物の製造方法に関し、特に
、溶接により高精度で組立てて製造する方法に係る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of manufacturing a structure having a narrow gap, and particularly to a method of assembling and manufacturing a structure with high precision by welding.
例えばコンプレッサ肩車等のような狭間隙の空間を必要
とする構造物を製作する一つの方法として、放電加工に
より狭間隙部分をくりぬく方法がある。しかし、この方
法では多大の時間を要し、且つ電極消耗を生じてコスト
高になるため、溶接による組立て製造方法も従来行なわ
れている。For example, one method of manufacturing a structure that requires a narrow gap space, such as a compressor shoulder wheel, is to hollow out the narrow gap part by electrical discharge machining. However, this method requires a lot of time and causes electrode wear, resulting in high costs, so welding has also been used as an assembly manufacturing method.
従来行なわれている狭間隙部材の溶接組立て方法は、第
２図に示すように、リブ２を備えた下板１上に開先４を
設けた上板３を重ね合せ、開先部を溶接により接合して
組立てるものである。The conventional method of welding and assembling narrow gap members is to stack an upper plate 3 with grooves 4 on a lower plate 1 with ribs 2 and weld the grooves, as shown in Fig. 2. It is assembled by joining.
上記従来行なわれている狭間隙部材の溶接組立て方法で
は、第３図（Ａ）の溶接前における初期間隙高さＨａが
、溶接後には同図（Ｂ）に示すようにＨｌに変化してし
まう問題がある。これは溶接部５を形成する際の溶接収
縮によるものである。In the above-mentioned conventional welding assembly method for narrow gap members, the initial gap height Ha before welding shown in FIG. 3(A) changes to Hl after welding as shown in FIG. 3(B). There's a problem. This is due to welding shrinkage when forming the welded portion 5.
しかも、溶接収縮の大きさは溶接条件の微少な変動でバ
ラツキを生じるため、精度の良い狭間隙を形成すること
が極めて困難であった。Moreover, the magnitude of welding shrinkage varies due to slight variations in welding conditions, making it extremely difficult to form a narrow gap with high precision.
この問題を回避するため、第４図に示すように鉄片や固
形セラミック等の変形防止材８をｒｉｐｉ内に挿入して
溶接を行ない、溶接収縮を防止する方−法が考えられて
いる。しかし、この場合には変形防止材８が溶接収縮で
圧縮され、組立て完了後にこれを取除くことが非常に困
難になるという別の問題を生じていた。In order to avoid this problem, a method has been considered to prevent welding shrinkage by inserting a deformation preventing material 8 such as an iron piece or solid ceramic into the RIPI and performing welding, as shown in FIG. However, in this case, another problem occurred in that the deformation preventing material 8 was compressed by welding shrinkage, making it extremely difficult to remove it after assembly was completed.
上記事情に鑑み、本発明は狭間隙空間を高精度に維持し
て狭間隙部材の溶接組立てを行なうことを技術的課題と
するものである。In view of the above circumstances, the technical object of the present invention is to perform welding assembly of narrow gap members while maintaining a narrow gap space with high precision.
本発明による狭間隙部材の溶接組立て方法は、狭＠隙部
材の空隙となる空間に予め水溶性材料または水崩壊性材
料からなる変形防止材を充填すると共に、該変形防止材
の一部に貫通溝または貫通孔を形成した上で溶接による
組立てを行なった後、この組立てられた構造物を水中に
浸漬することにより前記変形防止材を溶解除去すること
を特徴とするものである。The method for welding and assembling a narrow gap member according to the present invention includes filling in advance a deformation prevention material made of a water-soluble material or a water-disintegrable material into the space that will become the void of the narrow@gap member, and penetrating a part of the deformation prevention material. The structure is characterized in that after grooves or through holes are formed and the structure is assembled by welding, the assembled structure is immersed in water to dissolve and remove the deformation prevention material.
本発明で用いる変形防止材としては、例えば石膏等のよ
うに流動状態で空隙内に充填でき、乾燥または効果剤の
作用で硬化するものが望ましい。The deformation-preventing material used in the present invention is preferably one that can be filled into the voids in a fluid state, such as gypsum, and that hardens by drying or by the action of an effect agent.
また、本発明で前記変形防止剤に貫通溝または貫通孔を
形成するのは、溶接後に水中に浸漬して変形防止材を除
去する際に、水の浸透を容易にするためである。従って
、この貫通溝または貫通孔の両端は解放されていなけれ
ばならない。Further, in the present invention, the reason why the deformation preventing material is formed with a through groove or a through hole is to facilitate the penetration of water when the deformation preventing material is removed by immersion in water after welding. Therefore, both ends of the through groove or through hole must be open.
本発明の作用について、これを第２図〜第４図の場合と
同じ狭間隙部材の組立てに適用する一態様と共に説明す
れば次の通りである。The operation of the present invention will be explained as follows, together with one mode in which it is applied to the assembly of the same narrow gap member as in the case of FIGS. 2 to 4.
第１図（Ａ）に示すように、まず下板１のリプ２で仕切
られる空間内に水溶性の変形防止材６を充填し、更に該
変形防止材６に貫通溝７を形成する。変形防止材６に石
膏を用いる場合には、流動状態の石膏を流し込んで硬化
させる注型法により、貫通溝７を同時に形成することも
可能である。As shown in FIG. 1A, first, a water-soluble deformation preventing material 6 is filled in the space partitioned by the lip 2 of the lower plate 1, and a through groove 7 is further formed in the deformation preventing material 6. When using gypsum for the deformation prevention material 6, it is also possible to form the through grooves 7 at the same time by a casting method in which fluidized gypsum is poured and hardened.
この状態で第１図（Ｂ）に示すように上板３の開先を溶
接し、溶接部５により一体化して狭間隙部材の組立てを
行なう。その際、変形防止材６の介在によって高さ方向
の溶接収縮は完全に阻止される。また、この場合に変形
防止材の両側に形成された貫通溝７は裏波形成のための
空間として作用する。In this state, as shown in FIG. 1(B), the grooves of the upper plate 3 are welded and integrated by the welded portion 5 to assemble the narrow gap member. At this time, welding shrinkage in the height direction is completely prevented by the interposition of the deformation prevention material 6. Further, in this case, the through grooves 7 formed on both sides of the deformation prevention material act as spaces for forming the back waves.
次いで、この溶接して組立てた狭間隙部材を水中に浸漬
すると、水は変形防止材６中に浸透し、変形防止材６は
溶解または崩壊により軟化して容易に除去することがで
きる。その際、貫通溝７がないと水が奥まで浸透するの
に長時間を要することになるが、奥行き方向に寅通した
溝７が存在するため水は容易かつ迅速に変形防止材６の
奥まで浸透することができる。なお、図示のように変形
防止材６の表面に貫通溝７を設ける代りに、中央部に貫
通孔を設けても同様の作用が得られる。Next, when this welded and assembled narrow gap member is immersed in water, water penetrates into the deformation prevention material 6, and the deformation prevention material 6 is softened by dissolving or collapsing and can be easily removed. At that time, if there were no through grooves 7, it would take a long time for water to penetrate deep into the depth, but since there are grooves 7 that penetrate in the depth direction, water can easily and quickly penetrate deep into the deformation prevention material 6. can penetrate up to Note that, instead of providing the through grooves 7 on the surface of the deformation preventing material 6 as shown in the drawings, the same effect can be obtained by providing a through hole in the center.
実施例１，２
第１図（Ａ）（Ｂ）に示した形状の下板１、リプ２及び
上板３（リプの厚さ５ ｒｔｔｍ ｓリプの高さ８履、
リプのピッチ５０ａｗ＋）を用い、奥行き１５０馴の狭
間隙が１０個連々った狭間隙部材の溶接組立てを行なっ
た。なお、これらの材質はクロム／モリブデン鋼で、溶
接方法としてはＴＩＧ溶接（余熱２００℃）を用いた。Examples 1 and 2 Lower plate 1, lip 2, and upper plate 3 of the shapes shown in Fig. 1 (A) and (B) (lip thickness 5 rttm s lip height 8 shoes,
Using a lip pitch of 50 aw+), welded and assembled a narrow gap member with 10 consecutive narrow gaps each having a depth of about 150 mm. Note that these materials were chromium/molybdenum steel, and TIG welding (residual heat: 200° C.) was used as the welding method.
また、変形防止材６は市販の崩壊石膏に水５０％を混練
したもの、またはアルミナ粉末に炭酸カリウム５％を混
練したものを狭間隙空間内に流し込み、２時間放置して
固化した後に上板を外し、深ざ３ｊｌｌＩの貫通溝７を
加工して形成した。In addition, the deformation prevention material 6 was made by mixing commercially available collapsible plaster with 50% water or alumina powder mixed with 5% potassium carbonate and pouring it into the narrow gap space, leaving it to solidify for 2 hours, and then placing it on the top plate. was removed, and a through groove 7 with a depth of 3jllI was formed.
比較例１
変形防止材６を用いなかった点を除き、実施例と同じ方
法で狭間隙部材の溶接組立てを行なった。Comparative Example 1 A narrow gap member was welded and assembled in the same manner as in the example except that the deformation prevention material 6 was not used.
比較例２．４
変形防止材６の表面に貫通溝７を形成しなかった点を除
き、実施例と同じ方法で狭間隙部材の溶接組立てを行な
った。Comparative Example 2.4 A narrow gap member was welded and assembled in the same manner as in the example except that the through groove 7 was not formed on the surface of the deformation prevention material 6.
上記実施例１．２および比較例１〜３の結果を下記第１
表に示す。The results of Example 1.2 and Comparative Examples 1 to 3 above are summarized in the following
Shown in the table.
第１表
比較例１との比較から実施例１．２では狭間隙を高精度
に保持できることが明らかである。また比較例２．３と
の比較からは、実施例１．２では変形防止材６の崩壊に
要する時間が短時間ですむことが明らかである。From the comparison with Comparative Example 1 in Table 1, it is clear that the narrow gap can be maintained with high accuracy in Example 1.2. Further, from a comparison with Comparative Example 2.3, it is clear that in Example 1.2, the time required for the deformation prevention material 6 to collapse is short.
以上詳述したように、本発明によれば狭間隙空間を高精
度に維持して効率良く狭間隙部材の溶接組立てを行なう
ことができる等、顕著な効果が得られるものである。As detailed above, according to the present invention, remarkable effects such as being able to maintain a narrow gap space with high precision and efficiently perform welding and assembly of narrow gap members can be obtained.
第１図（Ａ）（Ｂ）は本発明による狭間隙部材の溶接組
立て方法の一態様を示す説明図、第２図は従来行なわれ
ている狭間隙部材の溶接組立て方法を説明するための断
面図であり、第３図（Ａ）（Ｂ）はその問題点説明する
ための断面図、第４図は従来行なわれている狭間隙部材
の溶接組立て方法の他の例と、その問題点を示す断面図
である。
１・・・下板、２・・・リブ、３・−上板、４・・・開
先、５・・・溶接部、６・・・変形防止材、７．８・・
・貫通溝。
出願人復代理人 弁理士 鈴江武彦
百１図
（Ｂ）
第２図
第３図
第４図
鴫FIGS. 1A and 1B are explanatory diagrams showing one embodiment of the welding assembly method for narrow gap members according to the present invention, and FIG. 2 is a cross section for explaining a conventional welding assembly method for narrow gap members. 3(A) and 3(B) are cross-sectional views for explaining the problems, and FIG. 4 shows another example of the conventional welding assembly method for narrow gap members and its problems. FIG. DESCRIPTION OF SYMBOLS 1... Lower plate, 2... Rib, 3... Upper plate, 4... Groove, 5... Welded part, 6... Deformation prevention material, 7.8...
- Penetration groove. Applicant Sub-Agent Patent Attorney Takehiko Suzue 101 (B) Figure 2 Figure 3 Figure 4
Claims (1)
崩壊性材料からなる変形防止材を充填すると共に、該変
形防止材の一部に貫通溝または貫通孔を形成した上で溶
接による組立てを行なつた後、この組立てられた構造物
を水中に浸漬することにより前記変形防止材を溶解除去
することを特徴とする狭間隙部材の溶接組立て方法。A deformation prevention material made of a water-soluble material or a water-disintegrable material is filled in advance in the space that will become the void of the narrow gap member, and a through groove or a through hole is formed in a part of the deformation prevention material, and then assembled by welding. After welding and assembling narrow gap members, the assembled structure is immersed in water to dissolve and remove the deformation prevention material.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10446585A JPS61262465A (en) | 1985-05-16 | 1985-05-16 | Method for welding and assembling 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 | Process making components with narrow gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10446585A JPS61262465A (en) | 1985-05-16 | 1985-05-16 | Method for welding and assembling narrow gap member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61262465A true JPS61262465A (en) | 1986-11-20 |
| JPH0366063B2 JPH0366063B2 (en) | 1991-10-16 |
Family
ID=14381335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10446585A Granted JPS61262465A (en) | 1985-05-16 | 1985-05-16 | Method for welding and assembling narrow gap member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61262465A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8426766B2 (en) | 2007-10-10 | 2013-04-23 | Hitachi Plant Technologies, Ltd. | Welding method and welding apparatus for an impeller |
| WO2017073500A1 (en) * | 2015-10-28 | 2017-05-04 | 株式会社荏原製作所 | Method of manufacturing impeller |
| EP3369937A4 (en) * | 2015-10-28 | 2019-06-26 | Ebara Corporation | Method of manufacturing impeller |
-
1985
- 1985-05-16 JP JP10446585A patent/JPS61262465A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8426766B2 (en) | 2007-10-10 | 2013-04-23 | Hitachi Plant Technologies, Ltd. | Welding method and welding apparatus for an impeller |
| WO2017073500A1 (en) * | 2015-10-28 | 2017-05-04 | 株式会社荏原製作所 | Method of manufacturing impeller |
| EP3369937A4 (en) * | 2015-10-28 | 2019-06-26 | Ebara Corporation | Method of manufacturing impeller |
| US10710186B2 (en) | 2015-10-28 | 2020-07-14 | Ebara Corporation | Method of manufacturing impeller |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0366063B2 (en) | 1991-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |