JPS6369957A - Repairing method for cylinder rod - Google Patents
Repairing method for cylinder rodInfo
- Publication number
- JPS6369957A JPS6369957A JP21221986A JP21221986A JPS6369957A JP S6369957 A JPS6369957 A JP S6369957A JP 21221986 A JP21221986 A JP 21221986A JP 21221986 A JP21221986 A JP 21221986A JP S6369957 A JPS6369957 A JP S6369957A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder rod
- repair
- thermally sprayed
- defect part
- alloy powder
- 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
- 238000000034 method Methods 0.000 title claims description 8
- 230000008439 repair process Effects 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 12
- 238000005498 polishing Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract 3
- 229910052751 metal Inorganic materials 0.000 claims abstract 3
- 238000005238 degreasing Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- 239000007921 spray Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 12
- 229910001182 Mo alloy Inorganic materials 0.000 abstract description 5
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 4
- 238000007751 thermal spraying Methods 0.000 abstract description 4
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 4
- XAEXSWVTEJHRMH-UHFFFAOYSA-N chloropyrilene Chemical compound C=1C=CC=NC=1N(CCN(C)C)CC1=CC=C(Cl)S1 XAEXSWVTEJHRMH-UHFFFAOYSA-N 0.000 abstract 1
- 229950005434 chloropyrilene Drugs 0.000 abstract 1
- 229910001651 emery Inorganic materials 0.000 abstract 1
- 238000005507 spraying Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 235000006693 Cassia laevigata Nutrition 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 241000735631 Senna pendula Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229940124513 senna glycoside Drugs 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、油圧、気体圧等を駆＃Ｊ］ ｉｌｉとする各
種のシリンダーロッドの溶射による補修方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for repairing various cylinder rods by thermal spraying using hydraulic pressure, gas pressure, etc.
上記シリンダーロッドは、平方センナ当たり数トンの荷
重を伝達するために、通常、ニッケルークロム鋼から製
造されており、しかもシリンダーの加圧流体の漏れによ
る加圧効率の低下を防止するために、その表面は高周波
焼入による表面加工が施されており、それ自体畜価であ
る。The cylinder rods are usually manufactured from nickel-chromium steel in order to transfer loads of several tons per square senna, and to prevent reduction in pressurizing efficiency due to leakage of pressurized fluid in the cylinder. Its surface has been treated by induction hardening, and it is worth the price of livestock itself.
しかしながら、通常の作業条件の下では、高硬度の塵埃
や腐食性雰囲気のために、シリンダーの駆動方向に疵が
入ったり、部分腐食が起こり表面平滑化のために補修す
る必要がある。However, under normal working conditions, hard dust and corrosive atmosphere may cause flaws or partial corrosion in the driving direction of the cylinder, requiring repairs to smooth the surface.
従来、この補修方法としては、−Ｓに素材と同質の素材
を溶接肉盛し、同部分を研磨する方法が採用されて来た
。Conventionally, as a method for this repair, a method has been adopted in which a material of the same quality as the material is welded overlay on -S and the same portion is polished.
しかしながら、かかる溶接肉盛は肉盛量の微雇調整が困
難で、そのため研磨によって除去すべき肉盛も機械的な
作業で行う必要があり、その補修に手間がかかるという
ばかりではなく、シリンダーロッドをシリンダーから取
り外す作業、つまりは油圧装置を部分的に分解しなけれ
ばならず、そのための油圧装置の休止期間は相当の長期
に及ぶことがあり、設備の稼働効率も低下せざるを得な
かった、しかも、ロッドの素材材質そのものの特性を低
下しないようにするためには、肉盛に際して素材の予熱
を充分に高くすることができず、そのため比較的低温で
肉盛作業を行う必要から、肉盛部分の素材との接合性も
不充分で、充分な品質を存する補修を行うことができな
かった。However, it is difficult to finely adjust the amount of weld overlay, and therefore, the overlay that should be removed by polishing also needs to be done mechanically, which not only takes time and effort to repair, but also The work of removing the hydraulic system from the cylinder meant that the hydraulic system had to be partially disassembled, which could require a considerable period of time when the hydraulic system was out of service, and the operating efficiency of the equipment had to be reduced. Furthermore, in order to avoid degrading the properties of the rod material itself, it is not possible to preheat the material sufficiently during overlaying, and therefore it is necessary to perform overlaying work at a relatively low temperature. The bondability with the material of the embossed part was also insufficient, making it impossible to perform repairs with sufficient quality.
本発明において解決すべき課題は、シリンダーロッドの
表面疵の補修に際して、シリンダーロッドをシリンダー
から取り外すことなく、現場作業として、短時間に、確
実に、しかも充分な素材との付着強度を存し、さらには
素材と同様の表面状態を有する補修部分を得る方法を確
立することにある。The problem to be solved by the present invention is to repair surface flaws on a cylinder rod without removing the cylinder rod from the cylinder, as an on-site work, in a short time, reliably, and with sufficient adhesion strength to the material. Another objective is to establish a method for obtaining a repaired part that has a surface condition similar to that of the raw material.
本発明は、上記課題を素材の熱影口を最小限にでき、数
ミクロンから数ミリの範囲内で皮膜層の厚みを調節でき
、しかも素材との付着性が溶接肉盛に比べて極めて優れ
ている溶射皮膜形成方法を適用することによって解決し
ようとするものである。そして、かかる）８射による皮
膜の形成材として、Ｎｉ−＾ｊ！−Ｍｏ合金わ）末を使
用することによって、皮膜形成後、格別の封孔処理と後
熱処理を施すことなく、単に簡単な手作業に準じた研磨
を施すことによって、新品同様のシリンダーロッドとし
て作業が可能である。The present invention solves the above problems by minimizing the heat shadow of the material, adjusting the thickness of the coating layer within the range of several microns to several millimeters, and having extremely superior adhesion to the material compared to welding. The aim is to solve this problem by applying a thermal spray coating formation method. Ni-^j! - By using Mo alloy powder, after film formation, a cylinder rod can be made like new by simply performing simple manual polishing without special sealing treatment or post-heat treatment. is possible.
Ｎ１−Ａ ｌ−Ｍｏ合金粉末としては、Ｎｉ ８７．０
〜９２．０重量％、Ａｊ！ ４．５〜５．５重量％、そ
れにＭｏ ５．０〜６．０重量％からなる合金が良い。As the N1-A l-Mo alloy powder, Ni 87.0
~92.0% by weight, Aj! An alloy consisting of 4.5 to 5.5% by weight and 5.0 to 6.0% by weight of Mo is preferable.
Ｎ１−Ａ ｌ−Ｍｏ合金粉末を溶射すると、発熱反応を
起こし、その結果、冶金的に母材と結合する。その結合
力は４２０ｋｇ／ｃｊ、抗張力は１０７８ｋｇ／ｃ＋Ｊ
である。また、膨張係数が低（、冷却中の収縮率も低い
ので高い抗張力と相俟って、クラックの心配な（厚肉盛
りができる。そして、仕上表面の極小の気孔に潤滑剤を
保留し、必要な時に放出するので、７擦にもよく耐える
自己潤滑能力を整えた材料である。When the N1-Al-Mo alloy powder is thermally sprayed, an exothermic reaction occurs, resulting in metallurgical bonding with the base material. Its bonding strength is 420kg/cj, and its tensile strength is 1078kg/c+J.
It is. In addition, the expansion coefficient is low (and the shrinkage rate during cooling is low, so combined with high tensile strength, it is possible to build up thick walls without worrying about cracks. Also, the lubricant is retained in the tiny pores of the finished surface, Since it is released when necessary, it is a material with self-lubricating ability that can withstand 70% rubbing.
上記補修処理に際しては、現場溶射作業としての最小の
器具を！１！備して、油圧装置を駆動してシリンダーロ
ッドを最長状態に押し出し、補修部分を脱脂したのち、
グラインダーによってアンダーカット部分を形成し、再
度脱脂のための焼脱脂を行いその周囲にマスキングを施
したのちガス粉末溶射によって溶射皮膜を形成する。そ
して、マスキングを外したのち、ヤスリ、サンドペーパ
によって仕上げて、補修作業を終了する。When performing the above repair process, use the smallest possible equipment for on-site thermal spraying work! 1! In preparation, drive the hydraulic system to push the cylinder rod to its longest position, degrease the repaired area, and then
An undercut portion is formed using a grinder, and after performing baking and degreasing again for degreasing, masking is applied around the undercut portion, and a thermal spray coating is formed by gas powder spraying. After removing the masking, the repair work is completed by filing and sandpaper.
直径７００ｍｍ、長さ１０００ｍ＋ｗのプレスラム表面
に幅１■、深さ０．５ｍｍ 、総補修面積約Ｑ、３ｍの
疵の溶射補修を行った。A thermal spraying repair was carried out on a 3 m flaw on the surface of a press ram with a diameter of 700 mm and a length of 1000 m + W, with a width of 1 mm, a depth of 0.5 mm, and a total repair area of approximately Q.
疵部分をクロロセンで洗浄し、グラインダーで研磨した
のち、バーナを用いて表面温度１５０℃程度に焼脱脂し
て、補修用合金として、Ｎｉ８９．５重量％、Ａ１５．
０重量％、 Ｍｏ ５．５重量％からなる平均粒径７０
μｍのＮ１−Ａ ｌ−Ｍｏ合金粉末を）８射した。After cleaning the scratched area with chlorocene and polishing it with a grinder, it was burnt and degreased using a burner to a surface temperature of about 150°C, and a repair alloy containing 89.5% Ni and A15.
0% by weight, Mo 5.5% by weight, average particle size 70
N1-Al-Mo alloy powder of 8 μm was injected.
形成された溶射層は、再使用に充分に耐えるものであっ
た。The sprayed layer thus formed was sufficiently durable for reuse.
本発明によって、大型油圧機のシリンダーロッドを設置
位置でそのままの状態で、ロッドの材質に何等の悪影響
を及ぼすことなく、完全に原状態にまで補修することが
可能となった。しかも、再度の補修も充分に可能であっ
て、ロッド寿命を従来の数倍に延命できる。According to the present invention, it has become possible to completely repair the cylinder rod of a large hydraulic machine to its original condition while leaving it in its installed position without any adverse effect on the material of the rod. Furthermore, it is fully possible to repair the rod again, and the life of the rod can be extended several times that of the conventional rod.
Claims (1)
てアンダーカット部分を形成し、再度の脱脂後、補修用
金属粉末を溶射して溶射皮膜を形成し、同溶射皮膜を研
磨することを特徴とするシリンダーロッドの補修方法。 ２、補修用金属粉末がＮｉ８７．０〜９２．０重量％、
Ａｌ４．５〜５．５重量％、及びＭｏ５．０〜６．０重
量％からなることを特徴とする特許請求の範囲第１項に
記載のシリンダーロッドの補修方法。[Claims] 1. After degreasing the cylinder rod surface flaws, form an undercut by polishing, after degreasing again, thermally spray repair metal powder to form a thermally sprayed coating, and polish the thermally sprayed coating. A cylinder rod repair method characterized by: 2. The repair metal powder contains Ni87.0-92.0% by weight,
The method for repairing a cylinder rod according to claim 1, characterized in that the content is 4.5 to 5.5% by weight of Al and 5.0 to 6.0% by weight of Mo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21221986A JPS6369957A (en) | 1986-09-08 | 1986-09-08 | Repairing method for cylinder rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21221986A JPS6369957A (en) | 1986-09-08 | 1986-09-08 | Repairing method for cylinder rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6369957A true JPS6369957A (en) | 1988-03-30 |
Family
ID=16618913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21221986A Pending JPS6369957A (en) | 1986-09-08 | 1986-09-08 | Repairing method for cylinder rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6369957A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1013788A1 (en) * | 1998-12-22 | 2000-06-28 | General Electric Company | Repair of high pressure turbine shrouds |
| KR100815998B1 (en) | 2006-09-19 | 2008-03-21 | 재단법인 포항산업과학연구원 | Repairing method for continuous casting mold |
-
1986
- 1986-09-08 JP JP21221986A patent/JPS6369957A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1013788A1 (en) * | 1998-12-22 | 2000-06-28 | General Electric Company | Repair of high pressure turbine shrouds |
| KR100815998B1 (en) | 2006-09-19 | 2008-03-21 | 재단법인 포항산업과학연구원 | Repairing method for continuous casting mold |
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