JPH02169189A - Repair method for super heat-resistant steel castings - Google Patents
Repair method for super heat-resistant steel castingsInfo
- Publication number
- JPH02169189A JPH02169189A JP32274388A JP32274388A JPH02169189A JP H02169189 A JPH02169189 A JP H02169189A JP 32274388 A JP32274388 A JP 32274388A JP 32274388 A JP32274388 A JP 32274388A JP H02169189 A JPH02169189 A JP H02169189A
- Authority
- JP
- Japan
- Prior art keywords
- resistant steel
- super heat
- repair method
- steel castings
- heat
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
- B23P6/007—Repairing turbine components, e.g. moving or stationary blades, rotors using only additive methods, e.g. build-up welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は２ａ耐熱鋼製鋳造物の補修方法に関する。[Detailed description of the invention] <Industrial application field> The present invention relates to a method for repairing a 2a heat-resistant steel casting.
Ｎ１基ベースやＣｏ基ベース等の超耐熱鋼製の鋳造物が
使用されている０例えば、小型のタービンカバーのよう
なものであるが、この種の鋳造物には、′Ｍれ部の発生
する場合がある。Castings made of super heat-resistant steel such as N1 base or Co base are used.For example, small turbine covers are used; There are cases where
本発明は、上記のような割れ部を、鋳造物に歪を生じる
ことなく、効率的に且つ経済的に完全補修することがで
きる方法に関するものである。The present invention relates to a method for completely repairing the above-mentioned cracks efficiently and economically without causing distortion in the casting.
〈従来の技術２その課題〉
超耐熱鋼製鋳造物の割れ部は、その性質上、これを補修
することがもともと極めて困難である。<Prior Art 2 - Problems> Due to the nature of cracks in super heat-resistant steel castings, it is extremely difficult to repair them.
したがって、割れ部の発生した超耐熱鋼製鋳造物はこれ
を廃棄しているのが実情である。しかし、これでは誠に
非経済的である。Therefore, the reality is that super heat-resistant steel castings with cracks are discarded. However, this is truly uneconomical.
一方、超耐熱鋼製鋳造物の割れ部を、ガス溶接やアーク
溶接であえて補修しようとする場合、先ず該超耐熱鋼製
鋳造物を充分に予熱しておき、高温下にガス溶接やアー
ク溶接することとなるが２これでは、雫にその作業が面
倒であるだけでなく、溶接後の超耐熱鋼！Ｖ鋳造物に歪
が生じてしまうという課題がある。On the other hand, when attempting to repair cracks in a super heat-resistant steel casting by gas welding or arc welding, the super heat-resistant steel casting should first be sufficiently preheated, and then gas welding or arc welding should be performed at high temperatures. 2 This not only makes the work troublesome, but also super heat-resistant steel after welding! There is a problem that distortion occurs in the V casting.
〈発明が解決しようとする課題、その解決手段〉本発明
は以上の如き従来の課題を解決する超耐熱鋼製鋳造物の
補修方法を提供するものである。<Problems to be Solved by the Invention and Means for Solving the Problems> The present invention provides a method for repairing super heat-resistant steel castings that solves the conventional problems as described above.
しかして本発明は、
超耐熱鋼製鋳造物の割れ部を切削乃至研削除去し、その
除去部へ同材質の超耐熱鋼片を宛かった後、該超耐熱鋼
片を電子ビーム溶接することを特徴とする超耐熱鋼ｇ１
１鋳造物の補修方法に係る。Therefore, the present invention involves cutting or grinding the cracked part of a super heat-resistant steel casting, applying a super heat-resistant steel piece of the same material to the removed part, and then electron beam welding the super heat-resistant steel piece. Super heat-resistant steel G1 featuring
1.Regarding the method of repairing cast objects.
本発明において肝要な点は、超耐熱鋼製鋳造物の割れ部
を例えばドリルで切削除去し、その切削除去部へ同材質
の超耐熱鋼片を宛がい、しかる後に切削除去部と超耐熱
鋼片との境界部を電子ビーム溶接して補修し、更に要す
ればその電子ビーム溶接部を表面研磨して仕上げる処に
ある。The important point in the present invention is to remove the cracked part of the super heat-resistant steel casting using a drill, for example, and then apply a piece of super heat-resistant steel made of the same material to the cut part, and then connect the cut part to the super heat-resistant steel. The boundary between the pieces is repaired by electron beam welding, and if necessary, the surface of the electron beam welded part is polished and finished.
本発明では、電子ビーム溶接を活用するため、割れ部を
切削乃至研削除去した超耐熱ｔ！４製鋳造物と同材質の
超耐熱鋼片とを一体溶接することができる。そしてこの
際１割れ部の発生した超耐熱鋼製鋳造物を予熱する必要
がなく、また全体を高温下において溶接することもない
ので、溶接後の超耐熱鋼製鋳造物に歪を生じることがな
く、結局。In the present invention, in order to utilize electron beam welding, the cracked parts are cut or ground to remove super heat-resistant T! It is possible to integrally weld a cast product made of No. 4 with a super heat-resistant steel piece made of the same material. At this time, there is no need to preheat the ultra-heat-resistant steel casting where the first crack has occurred, and the whole thing is not welded at high temperatures, so there is no possibility of distortion occurring in the ultra-heat-resistant steel casting after welding. No, in the end.
割れ部の発生した超耐熱鋼製鋳造物を効率的に且つ経済
的に完全補修することができるのである。Super heat-resistant steel castings with cracks can be completely repaired efficiently and economically.
以下１図面に基いて本発明の構成を更に詳細に説明する
。The configuration of the present invention will be explained in more detail below based on one drawing.
第１図は本発明の実施手順を例示する系統図である０図
面は超耐熱鋼製鋳造物である小型タービンカバー１１の
部分断面を示しているが、該小をタービンカバー１１に
は割れ部１２が発生している。この実施手順では先ず、
割れ部１２をドリルで切削除去している０次に、その除
去部２１へ同材質の超耐熱鋼片３１を埋め込んでいる。FIG. 1 is a system diagram illustrating the procedure for implementing the present invention. FIG. 12 is occurring. In this implementation procedure, first,
After the cracked part 12 is cut and removed with a drill, a super heat-resistant steel piece 31 made of the same material is embedded in the removed part 21.
そして、除去部２１と超耐熱鋼片３１との境界へ電子ビ
ームを照射しく図中、破線矢印）、双方を溶接−体化し
ている。最後に、電子ビーム溶接部を表面研磨し、小型
タービンカバー！ｌを完全補修している。Then, in order to irradiate the boundary between the removed portion 21 and the super heat-resistant steel piece 31 with an electron beam (dashed line arrow in the figure), both are welded together. Finally, the surface of the electron beam welded area was polished and the small turbine cover was created! l has been completely repaired.
〈実施例〉
Ｎ［及びＣＯをそれぞれ２０．０重量％含有する超耐熱
鋼製の鋳造物である小型タービンカバー（個数１０）に
ついて、それらの割れ部を第１図において説明した実施
手順にしたがい電子ビーム溶接したところ（電波値７０
Ａ）、いずれも完全補修することができた。<Example> Regarding small turbine covers (10 in number), which are casts made of super heat-resistant steel containing 20.0% by weight of N and CO, cracks were removed according to the implementation procedure explained in Fig. 1. Electron beam welding (radio wave value 70)
A) Both were able to be completely repaired.
〈発明の効果〉
以上説明した通りであるから、本発明には、ｔＡれ部の
発生した超耐熱鋼製鋳造物を、歪を生じることなく、効
率的に且つ経済的に完全補修することができるという効
果がある。<Effects of the Invention> As explained above, the present invention has the ability to completely repair super heat-resistant steel castings in which tA cracks have occurred, efficiently and economically without causing distortion. There is an effect that it can be done.
第１図は本発明の実施手順を例示する系統図である。
１１・・・・小型タービンカバー
１２・・・・割れ部、２１・・・・除去部３１・・・・
超耐熱鋼片
特許出願人 大同特殊鋼株式会社
代理人 弁理士 入 山 宏 正FIG. 1 is a system diagram illustrating the implementation procedure of the present invention. 11...Small turbine cover 12...Cracked part, 21...Removed part 31...
Super heat-resistant steel billet patent applicant Daido Steel Co., Ltd. Agent Patent attorney Hiroshi Iriyama
Claims (1)
その除去部へ同材質の超耐熱鋼片を宛がった後、該超耐
熱鋼片を電子ビーム溶接することを特徴とする超耐熱鋼
製鋳造物の補修方法。1. Cutting or grinding away the cracked parts of the super heat-resistant steel casting,
A method for repairing a super heat-resistant steel casting, comprising applying a super heat-resistant steel piece of the same material to the removed portion, and then electron beam welding the super heat-resistant steel piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32274388A JPH02169189A (en) | 1988-12-21 | 1988-12-21 | Repair method for super heat-resistant steel castings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32274388A JPH02169189A (en) | 1988-12-21 | 1988-12-21 | Repair method for super heat-resistant steel castings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02169189A true JPH02169189A (en) | 1990-06-29 |
Family
ID=18147139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32274388A Pending JPH02169189A (en) | 1988-12-21 | 1988-12-21 | Repair method for super heat-resistant steel castings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02169189A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2962675A1 (en) * | 2010-07-13 | 2012-01-20 | France Etat | Device for repairing a defect e.g. deformation, cracks or impact of a metal piece such as a blade of a turbine engine, comprises an electron beam welding device, and a filler metal, where the welding device comprises an electron gun |
-
1988
- 1988-12-21 JP JP32274388A patent/JPH02169189A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2962675A1 (en) * | 2010-07-13 | 2012-01-20 | France Etat | Device for repairing a defect e.g. deformation, cracks or impact of a metal piece such as a blade of a turbine engine, comprises an electron beam welding device, and a filler metal, where the welding device comprises an electron gun |
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