JPH04189423A - Anti-corrosive metal layer formation method for columnar body and anti-corrosive columnar body - Google Patents
Anti-corrosive metal layer formation method for columnar body and anti-corrosive columnar bodyInfo
- Publication number
- JPH04189423A JPH04189423A JP31747090A JP31747090A JPH04189423A JP H04189423 A JPH04189423 A JP H04189423A JP 31747090 A JP31747090 A JP 31747090A JP 31747090 A JP31747090 A JP 31747090A JP H04189423 A JPH04189423 A JP H04189423A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- stainless steel
- cylindrical body
- columnar body
- corrosive
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 14
- 230000015572 biosynthetic process Effects 0.000 title abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 36
- 239000010935 stainless steel Substances 0.000 claims abstract description 36
- 238000003466 welding Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 238000005260 corrosion Methods 0.000 claims description 31
- 230000007797 corrosion Effects 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 2
- 230000008602 contraction Effects 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 abstract description 3
- 238000005498 polishing Methods 0.000 abstract description 2
- 238000004804 winding Methods 0.000 abstract 1
- 238000007747 plating Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
本発明は、円柱体の耐食性金属層形成方法及び耐食性円
柱体に関するものである。The present invention relates to a method for forming a corrosion-resistant metal layer on a cylindrical body and a corrosion-resistant cylindrical body.
海水等の腐食性環境中で使用される油圧シリンダのラム
部分等にあっては、高い加工精度及び耐食性を有する円
筒状表面が要求される。
かかる表面を持つ円柱体としては、■円柱体全部をステ
ンレス鋼とする方法、■普通鋼にクロムメツキ等の耐食
性処理を施すメツキ方法等がある。The ram portion of a hydraulic cylinder used in a corrosive environment such as seawater requires a cylindrical surface with high machining accuracy and corrosion resistance. Examples of the cylindrical body having such a surface include (1) a method in which the entire cylindrical body is made of stainless steel, and (2) a plating method in which common steel is subjected to a corrosion-resistant treatment such as chrome plating.
しかしながら、■円柱体全体をステンレス鋼とする方法
であると、非常に高価なものとなり経済性を損ない易い
。■メツキ方法であると、加工精度及び耐食性を同時に
必要とする部分（例えば前述のラム部分では摺動部分）
のみに処理を集中させることができるものの、研磨、洗
浄、多重メツキ等の多数の処理工程を必要として、公害
対策、工期及び経済性の点で不利となる。
本発明は、このような課題を解決するものであり、機械
的強度を保持しながら必要とする部分に低コストで十分
な耐食性を付与することを目的とするものである。However, method (1) in which the entire cylindrical body is made of stainless steel is very expensive and tends to impair economic efficiency. ■With the plating method, parts that require processing accuracy and corrosion resistance at the same time (for example, the sliding part of the ram part mentioned above)
Although it is possible to concentrate the processing on only one area, it requires a large number of processing steps such as polishing, cleaning, and multiple plating, which is disadvantageous in terms of pollution control, construction period, and economic efficiency. The present invention is intended to solve these problems, and aims to provide sufficient corrosion resistance to necessary parts at low cost while maintaining mechanical strength.
本発明は、上記課題を解決するために、二つの手段を提
案している。
第１の手段は、鋼材からなる円柱体の表面に薄板状のス
テンレス鋼板を巻き付けかつステンレス鋼板の突き合わ
せ部分に小間隙を形成ずろ工程と、突き合わせ部分の小
間隙に溶接を施しステンレス鋼板に緊張力を発生させる
工程と、咳溶接後に溶接部及びステンレス銅板の表面を
仕上げ加工する工程とを有する円柱体の耐食性金属層形
成方法である。
第２の手段は、鋼材からなる円柱体と、該円柱体の表面
への巻き付け時の突き合わせ部分の小間隙に溶接が施さ
れることにより円柱体と一体化されかつ溶接部及び表面
が仕」二げ加工された薄板状のステンレス鋼板とを具備
する構成の耐食性円柱体としている。The present invention proposes two means to solve the above problems. The first method involves wrapping a thin stainless steel plate around the surface of a cylindrical body made of steel, forming a small gap at the butt part of the stainless steel plate, and welding the small gap at the butt part to apply tension to the stainless steel plate. This is a method for forming a corrosion-resistant metal layer on a cylindrical body, which includes a step of generating corrosion, and a step of finishing the welded part and the surface of the stainless steel copper plate after welding. The second method is to weld a cylindrical body made of steel to a small gap between the abutted portions when the cylindrical body is wrapped around the surface of the cylindrical body, so that the cylindrical body is integrated with the cylindrical body, and the welded portion and the surface are finished. It is a corrosion-resistant cylindrical body comprising a thin plate-shaped stainless steel plate that has been subjected to burr processing.
鋼材からなる円柱体の表面は、それ自身の耐食性が不十
分であるものの、耐食性を必要とする部分に、薄板状の
ステンレス鋼板を巻き付けることにより耐食性が生じる
。
ステンレス鋼板の巻き付け時の突き合わせ部分に小間隙
を形成しておいて、小間隙に溶接を施すと、溶接部に収
縮力が発生して、ステンレス鋼板に緊張力が付与されス
テンレスＩ板への一体化がなされる。
溶接終了後に、溶接部及びステンレス鋼板の表面を仕上
げ加工することにより、所望精度の表面が付与されるも
のである。Although the surface of a cylindrical body made of steel material itself has insufficient corrosion resistance, corrosion resistance can be achieved by wrapping a thin stainless steel plate around the portion that requires corrosion resistance. If a small gap is formed at the butt part of the stainless steel plate when it is wrapped, and welding is performed in the small gap, contraction force will be generated at the weld, applying tension to the stainless steel plate and making it integral with the stainless steel I plate. will be made. After welding is completed, the surface of the welded part and the stainless steel plate is finished to provide a surface with desired precision.
以下、本発明に係る円柱体の耐食性金属層形成方法及び
耐食性円柱体を前述した油圧ンリンダのラム部分に適用
した場合の一実施例を、第１図ないし第４図に基づいて
説明する。
これら各図において、符号Ａは浦圧シリンダ、Ｂはラム
部分、１は鋼材からなる円柱体（円筒体）、２は薄板状
のステンレス鋼板、３は耐食性金属層、Ｇは小間隙、Ｗ
は周溶接部、Ｔはその他の溶接継ぎ手である。
これらの詳細について形成工程とともに説明する。
く円筒状表面の加工〉
ラム部分Ｂを構成する円筒状表面が要求される場合、円
柱体（円筒体）１の耐食性が要求される部分に、機械加
工によって所望の深さでかつ真円度が例えば０．１ｍｍ
程度の誤差範囲となる切削溝１ａを形成しておく。
くステンレス鋼板の巻き付け〉
切削溝１ａの上に、薄板状のステンレス鋼板２を緊密に
巻き付ける。この場合、ステンレス鋼板２の突き合わせ
部分に小間隙Ｇが残されるように設定する。
く周溶接部の形成〉
ステンレス鋼板２を緊密に巻き付けた状態を保持しなが
ら、突き合わせ部分の小間隙Ｇに第２図に示すように溶
接を施す。この周溶接部Ｗの形成にともなう溶接金属の
熱収縮によって、ステンレス鋼板２を周方向に緊張させ
る力（緊張力）が発生し、ステンレス鋼板２は周方向の
緊張力によって、切削溝１ａと一体化状態となる。
くその他の溶接継ぎ手の形成〉
周溶接部Ｗの形成後、切削溝１ａの縁部とステンレス鋼
板２との縁部との間を溶接する。この部分の溶接開先形
状は例えばＶ型とし、第３図に示すように、その他の溶
接継ぎ手Ｔを形成することによって、円柱体１とステン
レス綱板２とを一体化する。
く仕上げ加工〉
第３図に示すように各溶接部Ｗ−Ｔによって一体化した
後、各溶接部Ｗ−Ｔを含むステンレス綱板２の表面を機
械加工や研磨仕上げし、前述したラム部分Ｂとして求め
られる表面精度を確保し、第４図に示す状態の製品、つ
まり、ステンレス銅板２に基づく耐食性金属層を有する
耐食性円柱体を得るものである。
このような耐食性円柱体であると、第４図に示すように
、ラム部分Ｂにおける摺動部分である高い加工精度と耐
食性と耐摩耗性とが要求される部分は、機械加工が施さ
れたステンレス鋼板２の表面部分によって得られるため
、前述の技術的要求に容易に応えられることになる。
本発明者等が試算したところ、従来技術で列記した各方
法及びその円柱体、つまり、全部をステンレス鋼とする
方法や普通鋼にメツキを施す方法と比較して、経済性、
機械的強度、低公害性、耐食性のすべての点で有利であ
ることが確認された。Hereinafter, a method for forming a corrosion-resistant metal layer on a cylindrical body according to the present invention and an embodiment in which the corrosion-resistant cylindrical body is applied to the ram portion of the above-mentioned hydraulic cylinder will be described with reference to FIGS. 1 to 4. In each of these figures, symbol A is a pressure cylinder, B is a ram portion, 1 is a cylindrical body made of steel, 2 is a thin stainless steel plate, 3 is a corrosion-resistant metal layer, G is a small gap, W
is the circumferential weld, and T is the other weld joint. These details will be explained together with the forming process. Machining of a cylindrical surface> When a cylindrical surface constituting the ram part B is required, the part of the cylinder (cylindrical body) 1 where corrosion resistance is required is machined to the desired depth and roundness. For example, 0.1mm
Cut grooves 1a are formed within a certain error range. Wrapping of stainless steel plate> A thin stainless steel plate 2 is tightly wrapped around the cutting groove 1a. In this case, a small gap G is left in the abutting portion of the stainless steel plates 2. Formation of Circumferential Weld Part> While maintaining the tightly wound state of the stainless steel plate 2, welding is performed in the small gap G of the butt part as shown in FIG. 2. Thermal contraction of the weld metal accompanying the formation of this circumferential weld W generates a force (tension force) that tensions the stainless steel plate 2 in the circumferential direction, and the stainless steel plate 2 is integrated with the cutting groove 1a due to the circumferential tension force. It becomes a state of Formation of other welded joints> After forming the circumferential weld W, the edge of the cut groove 1a and the edge of the stainless steel plate 2 are welded together. The welding groove shape of this part is, for example, V-shaped, and as shown in FIG. 3, by forming another weld joint T, the cylindrical body 1 and the stainless steel steel plate 2 are integrated. Finishing Process> As shown in Fig. 3, after each welding part W-T is integrated, the surface of the stainless steel steel plate 2 including each welding part W-T is machined or polished to form the ram part B described above. The surface precision required for this purpose is ensured, and a product in the state shown in FIG. With such a corrosion-resistant cylindrical body, as shown in Figure 4, the sliding part of the ram part B, which requires high machining accuracy, corrosion resistance, and wear resistance, is machined. Since it is obtained by the surface portion of the stainless steel plate 2, the above-mentioned technical requirements can be easily met. According to the calculations made by the present inventors, the economical efficiency and
It was confirmed that it is advantageous in terms of mechanical strength, low pollution, and corrosion resistance.
以上説明したように、本発明に係る円柱体の耐食性金属
層形成方法及び耐食性円柱体によれば、以下のような優
れた効果を奏するものとなる。
（１） 鋼材からなる円柱体の表面に薄板状のステン
レス鋼板が巻き付けられることにより、必要な耐食性を
得ることができる。
（２） ステンレス鋼板の突き合わせ部分の小間隙への
溶接により、ステンレス鋼板に緊張力が発生して、円柱
体とステンレス鋼板との間に優れた固着強度が得られる
。
（３） ステンレス鋼板の表面を仕上げ加工することに
より、耐食性金属層について所望の寸法精度を得ること
ができる。As explained above, according to the method for forming a corrosion-resistant metal layer on a cylindrical body and the corrosion-resistant cylindrical body according to the present invention, the following excellent effects can be achieved. (1) By wrapping a thin stainless steel plate around the surface of a cylindrical body made of steel, the necessary corrosion resistance can be obtained. (2) Tension is generated in the stainless steel plates by welding into the small gap between the butt parts of the stainless steel plates, and excellent adhesion strength can be obtained between the cylindrical body and the stainless steel plates. (3) By finishing the surface of the stainless steel plate, desired dimensional accuracy can be obtained for the corrosion-resistant metal layer.
第１図は本発明に係る耐食性円柱体を組み込んだ油圧シ
リンダの一実施例を示す一部を断面した正断面図である
。
第２図は本発明に係る耐食性円柱体の製造途中の状態を
示す要部の横断面図である。
第３図は本発明に係る耐食性円柱体の製造途中の状態を
示す要部の正面図である。
第４図は本発明に係る耐食性円柱体の一実施例における
完成状態を示す半分を省略した正断面図である。FIG. 1 is a partially sectional front view showing an embodiment of a hydraulic cylinder incorporating a corrosion-resistant cylindrical body according to the present invention. FIG. 2 is a cross-sectional view of the main part of the corrosion-resistant cylindrical body according to the present invention, showing a state in the middle of manufacturing. FIG. 3 is a front view of the main parts of the corrosion-resistant cylindrical body according to the present invention, showing a state in the middle of manufacturing. FIG. 4 is a front sectional view with half omitted, showing a completed state of one embodiment of the corrosion-resistant cylindrical body according to the present invention.
Ａ・・・・・・油圧シリンダ Ｂ・・・・・・ラム部分 ｌ・・・・・・円柱体（円筒体） ２・・・ステンレス鋼板 ３・・・・・・耐食性金属層 Ｇ・・・・小間隙 Ｗ・・・・・・周溶接部 Ｔ・・・・・・その他の溶接継ぎ手 出願人 石川島播磨重工業株式会社 A...Hydraulic cylinder B... Ram part l...Cylindrical body (cylindrical body) 2...Stainless steel plate 3...Corrosion-resistant metal layer G...Small gap W... Circumference welded part T...Other welded joints Applicant: Ishikawajima Harima Heavy Industries Co., Ltd.
Claims (2)
の突き合わせ部分に小間隙を形成する工程と、突き合わ
せ部分の小間隙に溶接を施しステンレス鋼板に緊張力を
発生させる工程と、該溶接後に溶接部及びステンレス鋼
板の表面を仕上げ加工する工程とを有することを特徴と
する円柱体の耐食性金属層形成方法。Claim 1: Wrapping a thin stainless steel plate around the surface of a cylindrical body made of steel, forming a small gap at the abutting part of the stainless steel plate, and applying tension to the stainless steel plate by welding the small gap at the abutting part. 1. A method for forming a corrosion-resistant metal layer on a cylindrical body, the method comprising the steps of: forming a corrosion-resistant metal layer on a cylindrical body; and finishing the welded portion and the surface of a stainless steel plate after the welding.
溶接が施されることにより円柱体と一体化されかつ溶接
部及び表面が仕上げ加工された薄板状のステンレス鋼板
とを具備することを特徴とする耐食性円柱体。[Claim 2] A cylindrical body made of steel material is integrated with the cylindrical body by welding a small gap between the abutting portions when wrapped around the surface of the cylindrical body, and the welded portion and the surface are finished. A corrosion-resistant cylindrical body comprising: a thin stainless steel plate;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02317470A JP3094441B2 (en) | 1990-11-21 | 1990-11-21 | Corrosion resistant metal layer forming method of cylindrical body and corrosion resistant cylindrical body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02317470A JP3094441B2 (en) | 1990-11-21 | 1990-11-21 | Corrosion resistant metal layer forming method of cylindrical body and corrosion resistant cylindrical body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04189423A true JPH04189423A (en) | 1992-07-07 |
| JP3094441B2 JP3094441B2 (en) | 2000-10-03 |
Family
ID=18088593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02317470A Expired - Fee Related JP3094441B2 (en) | 1990-11-21 | 1990-11-21 | Corrosion resistant metal layer forming method of cylindrical body and corrosion resistant cylindrical body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3094441B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140112429A (en) | 2013-03-13 | 2014-09-23 | 가부시키가이샤 리코 | Method for producing group 13 nitride crystal and apparatus for producing the same |
| CN104325215A (en) * | 2014-10-23 | 2015-02-04 | 江苏邦威机械制造有限公司 | Spiral welding machine for manufacturing of PCCP (prestressed concrete cylinder pipe) steel cylinder |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101974698B1 (en) * | 2016-09-06 | 2019-09-05 | 구하경 | Buried type hinge, a chair and desk using the same |
-
1990
- 1990-11-21 JP JP02317470A patent/JP3094441B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140112429A (en) | 2013-03-13 | 2014-09-23 | 가부시키가이샤 리코 | Method for producing group 13 nitride crystal and apparatus for producing the same |
| CN104325215A (en) * | 2014-10-23 | 2015-02-04 | 江苏邦威机械制造有限公司 | Spiral welding machine for manufacturing of PCCP (prestressed concrete cylinder pipe) steel cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3094441B2 (en) | 2000-10-03 |
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| Date | Code | Title | Description |
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| LAPS | Cancellation because of no payment of annual fees |