JPH04200883A - Welding method - Google Patents
Welding methodInfo
- Publication number
- JPH04200883A JPH04200883A JP32933290A JP32933290A JPH04200883A JP H04200883 A JPH04200883 A JP H04200883A JP 32933290 A JP32933290 A JP 32933290A JP 32933290 A JP32933290 A JP 32933290A JP H04200883 A JPH04200883 A JP H04200883A
- Authority
- JP
- Japan
- Prior art keywords
- joining
- blade
- deflection preventing
- diffusion welding
- preventing materials
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 14
- 238000005304 joining Methods 0.000 claims abstract description 17
- 238000009792 diffusion process Methods 0.000 claims abstract description 14
- 239000003351 stiffener Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 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、例えば、遠心圧縮機・送風機の羽根車の製造
などに適用される接合方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a joining method applied to, for example, manufacturing impellers for centrifugal compressors and blowers.
一般に、ターボ流体機械の羽根車は、第２図（、、）、
第２図（Ｌｌ）、第２［メ１（Ｃ）に示すように、回転
軸１（二装着されて回転する主板２に羽根；３を−・体
削り出して形成し、羽根端で側板・１を溶接して構成さ
れている。この場合、従来のアーク溶接法では、接合す
る部材に大きな熱斌を加えることになり、被溶接部＋４
が変形して初期の加工Ｔ１′１度が失われたり、表面が
酸化するなどの不具合が起こることがあった。In general, the impeller of a turbo fluid machine is shown in Fig. 2 (,,),
As shown in Fig. 2 (Ll) and 2 (C), the rotating shaft 1 (2) is attached to the rotating main plate 2, and the blades 3 are formed by carving out the body, and the side plate is formed at the blade end.・Constructed by welding 1. In this case, in the conventional arc welding method, a large heat beam is applied to the parts to be joined, and the welded part + 4
In some cases, defects such as deformation and loss of the initial processing T1'1 degree or surface oxidation may occur.
これを避けるために羽根車の接合法として、１′！空拡
散溶接法が用いられる。第３図は、遠心式羽根車の従来
の真空拡散溶接法による接合方法の説明図である。図に
おいて羽根車は、第３図（２１）に示すように、円盤上
の主体２と側板４により構成され羽根３′および３″は
、第３図（１））に示すように主板２、側板４と一体に
材料から削り出されて形成されている。このような主板
２と側板４とを重ね合わせ、第３図（ｂ）にその断面を
示すように、羽根部３′と羽根部３″とを真空中で互い
に真空拡散溶接し、主板２１羽根部３．側板４とを−・
体化する。接合完了後、必要ならば羽根内面の最終は仕
１−加工を行う。To avoid this, the impeller joining method is 1'! Air diffusion welding is used. FIG. 3 is an explanatory diagram of a method of joining centrifugal impellers using a conventional vacuum diffusion welding method. In the figure, the impeller is composed of a disc-shaped main body 2 and a side plate 4, as shown in Fig. 3 (21), and the blades 3' and 3'' are formed by the main plate 2, as shown in Fig. 3 (1)). It is formed by cutting out the material integrally with the side plate 4. By overlapping the main plate 2 and the side plate 4, as shown in the cross section in FIG. 3(b), the blade portion 3' and the blade portion are formed. 3'' are vacuum diffusion welded to each other in a vacuum, and the main plate 21 blade portion 3. Side plate 4 and...
embody. After the joining is completed, the inner surface of the blade is subjected to final processing, if necessary.
なお、この種の接合法として関連するものには例えば、
特開昭５６−３３１８８９公報が挙げられる。In addition, related joining methods of this type include, for example,
JP-A-56-331889 is mentioned.
〔発明が解決しｊ：うとする課題］
■−記のような真空拡散溶接法による接合は、第３しｌ
（＋））に示すような、羽根Ｊヴさに対し羽根Ｘ：ｆ：
さが比較的小さい場合には容易であるが、第３図（Ｃ）
に示すような羽根高さが大きい場合には、拡散溶接時に
加える外部荷重により１羽根３が破線に示すように接合
面の圧縮応力が均等に分布せず、所定の形状の羽根車を
得られない、等の課題を抱えている。[Problems to be solved by the invention] ■-Joining by vacuum diffusion welding as described above is the third step.
Feather X:f:
This is easy if the
When the height of the blades is large as shown in , the compressive stress on the joint surface of each blade 3 is not evenly distributed as shown by the broken line due to the external load applied during diffusion welding, making it difficult to obtain an impeller of the specified shape. There are issues such as not having one.
本発明の目的は羽根高さの大きい羽根車の溶接について
も羽根部の変形を伴うことなく行える方法を提供するこ
とにある。An object of the present invention is to provide a method that can perform welding of impellers with large blade heights without deforming the blade portions.
前に述へたような、羽根車の溶接組立方法に於ける課題
を解決するために、本発明は、主板と一体形成された羽
根部、および側板と一体形成された羽根部に、あらかし
め一定間隔をもって変形を防止するための防撓材を設け
ておき、その後、互いの接合面に真空拡散接合を施こし
、更に接合完了後、上記の防撓材を取り除くことを特徴
とする。In order to solve the above-mentioned problems in the welding assembly method of an impeller, the present invention provides a blade part integrally formed with the main plate and a blade part integrally formed with the side plate. The structure is characterized in that stiffeners are provided at regular intervals to prevent deformation, then vacuum diffusion bonding is performed on the joint surfaces, and after the bonding is completed, the stiffeners are removed.
即ち、本発明に依る接合方法は、あらかじめ羽根部に防
撓材を設けて、拡散接合溶接時に加わる荷重で座屈など
の変形が起きないように処置を施した後に真空拡散溶接
を行うため、溶接時に羽根部が変形を起こすことがなく
、接合面にかかる荷重も均一である。これにより精度の
高い、良好な接合を行うことができる。That is, in the joining method according to the present invention, a stiffening material is provided in advance on the blade portion and measures are taken to prevent deformation such as buckling due to the load applied during diffusion welding, and then vacuum diffusion welding is performed. The blade part does not deform during welding, and the load applied to the joint surface is uniform. This allows for highly accurate and good bonding.
本発明の実施例を、第１図に基づいて説明する。 An embodiment of the present invention will be described based on FIG.
第１図は本発明の一実施例に係る羽根車の接合方法の説
明図である。FIG. 1 is an explanatory diagram of a method for joining impellers according to an embodiment of the present invention.
図に於いて羽根３′＋３“は、第１図（ａ）に示すよう
に、各々羽根車の主板２．側板４と一体に、機械加工に
より削り出されて形成されている。In the figure, the blades 3'+3'' are machined and formed integrally with the main plate 2 and side plate 4 of the impeller, respectively, as shown in FIG. 1(a).
第１図（ｂ）は第１図（ａ）におけるＢ−Ｂ断面図で、
羽根部３′、３“には、第１図（ｂ）に示すように、羽
根部３’ 、３’の接合面に対し垂直をなすように防撓
材５が設けられている。この防撓材は、羽根部を形成す
る際に連続した突起部として一体形成しても良い。また
、羽根部に溶接ビーｌ〜で所定の形に肉盛して防撓構造
としても良い。FIG. 1(b) is a cross-sectional view taken along line B-B in FIG. 1(a).
As shown in FIG. 1(b), the blade parts 3', 3'' are provided with a stiffening material 5 perpendicular to the joint surface of the blade parts 3', 3'. The flexible member may be integrally formed as a continuous protrusion when forming the blade portion.Alternatively, the bending member may be built up in a predetermined shape on the blade portion using a welding bead to form a stiffening structure.
このような防撓構造をもつ羽根の付いた主板２と側板４
とを第１図（ｃ）に示すように重ね合せて外部から荷重
を加え、羽根３′および３“の接合面を高温中で真空拡
散溶接法により接合し、軟に防撓材を削り取るなどして
所定の形状に成形する。Main plate 2 and side plate 4 with wings having such a stiffening structure
As shown in Figure 1 (c), the blades are stacked together and a load is applied from the outside, and the joint surfaces of blades 3' and 3'' are joined by vacuum diffusion welding at high temperature, and the stiffener is gently scraped off. and mold it into a predetermined shape.
以上のような方法で真空拡散溶接を行った場合には、羽
根高さの大きい羽根車についても、羽根部の変形を伴う
ことなく接合することができるので、従来の方法に比べ
精度の高い接合が可能となる。When vacuum diffusion welding is performed using the method described above, even impellers with large blade heights can be joined without deforming the blades, resulting in more precise joining than conventional methods. becomes possible.
一般に、羽根高さの小さい羽根車では、主板と側板とを
組み合せた後のガス通路の仕上加工は、作業性が悪く困
難であるが、本発明が解決しようとするのは、羽根高さ
の大きい羽根車についてであるので、本発明中の防撓材
の除去作業についても困難はない。In general, for impellers with small blade heights, finishing of the gas passage after combining the main plate and side plates is difficult due to poor workability. Since the impeller is large, there is no difficulty in removing the stiffener according to the present invention.
本発明によれば、接合する部材には、大きな熱量を特に
加える必要がなく、また、部材全体が均一な温度状態で
接合が行われるので、接合による−へ−
変形を発生することなく接合できる。また、羽根高さの
大きい場合についても変形を伴うことなく接合すること
が可能となる。According to the present invention, it is not necessary to particularly apply a large amount of heat to the members to be joined, and since the entire member is joined at a uniform temperature, it is possible to join without causing deformation due to joining. . Further, even when the blade height is large, it is possible to join the blades without deformation.
第１図は本発明の一実施例を示す斜視図（、）および断
面図（ｂ）（ｃ）、第２図は従来のターボ流体機械の羽
根車の溶接組立法の説明図、第３図は従来の真空拡散溶
接の説明図である。
１ ロータ、２ 主板、３ 羽根、３′・・・主板と一
体形成される羽根部、３″ ・・側板と一体形成さ−６
〜Fig. 1 is a perspective view (,) and sectional views (b) and (c) showing an embodiment of the present invention, Fig. 2 is an explanatory diagram of a conventional welding assembly method for an impeller of a turbo fluid machine, and Fig. 3 is an explanatory diagram of conventional vacuum diffusion welding. 1 Rotor, 2 Main plate, 3 Vane, 3'...Blade portion integrally formed with the main plate, 3''... integrally formed with the side plate-6
~
Claims (1)
材を設け、互いの前記接合面を当接し、高温中で真空拡
散溶接を行い、その後、前記防撓材を取り除くことを特
徴とする接合方法。1. When joining plates, a stiffener is provided in a direction perpendicular to the joint surface, the joint surfaces are brought into contact with each other, vacuum diffusion welding is performed at high temperature, and then the stiffener is removed. A joining method characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32933290A JPH04200883A (en) | 1990-11-30 | 1990-11-30 | Welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32933290A JPH04200883A (en) | 1990-11-30 | 1990-11-30 | Welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04200883A true JPH04200883A (en) | 1992-07-21 |
Family
ID=18220270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32933290A Pending JPH04200883A (en) | 1990-11-30 | 1990-11-30 | Welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04200883A (en) |
-
1990
- 1990-11-30 JP JP32933290A patent/JPH04200883A/en active Pending
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