JPH10340633A - Pipe-forming metal band plate, corrugated steel pipe using the band plate, and corrugated steel pipe-armored cable - Google Patents
Pipe-forming metal band plate, corrugated steel pipe using the band plate, and corrugated steel pipe-armored cableInfo
- Publication number
- JPH10340633A JPH10340633A JP9162028A JP16202897A JPH10340633A JP H10340633 A JPH10340633 A JP H10340633A JP 9162028 A JP9162028 A JP 9162028A JP 16202897 A JP16202897 A JP 16202897A JP H10340633 A JPH10340633 A JP H10340633A
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- corrugated steel
- tin
- pipe
- layer
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 88
- 239000010959 steel Substances 0.000 title claims abstract description 88
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 66
- 239000002184 metal Substances 0.000 title claims abstract description 66
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 58
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 47
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 44
- 239000011651 chromium Substances 0.000 claims abstract description 44
- 238000007747 plating Methods 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 51
- 239000011247 coating layer Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 6
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 238000004381 surface treatment Methods 0.000 description 8
- 239000000314 lubricant Substances 0.000 description 5
- 230000002265 prevention Effects 0.000 description 4
- 238000010306 acid treatment Methods 0.000 description 3
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 3
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000010953 base metal Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229930091051 Arenine Natural products 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000002345 surface coating layer Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
- Details Of Indoor Wiring (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属管を造るために用
いる造管用金属帯板、この造管用金属帯板を用いて製造
する波付鋼管、及び、この波付鋼管を心線ケーブルの被
覆層として用いる波付鋼管鎧装ケーブルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal strip for pipe making used for manufacturing a metal pipe, a corrugated steel pipe manufactured by using the metal strip for pipe making, and a corrugated steel pipe formed of a core cable. The present invention relates to a corrugated steel pipe armored cable used as a coating layer.
【０００２】[0002]
【従来の技術】従来、波付鋼管鎧装ケーブルとして、特
開平８−２４９９４１号公報に提示されている波付鋼管
鎧装ケーブル５０があり、その構造を図５に示す 図５に示すように、波付鋼管鎧装ケーブル５０は、ケー
ブル心線５１の周囲に金属シースとしての波付鋼管５２
を設けると共に、波付鋼管５２の外周面に表面処理被膜
層５３を設けることによって形成される。この表面処理
被膜層５３は、波付鋼管５２を造管した後ではなく、波
付加工前の造管用金属帯板である鋼板５４（図６参照）
上に施される。なお、５３ａは保護シースである。図６
に示すように、表面処理被膜層５３は、下地である鋼板
５４上に順に重ね合わせた状態で被覆される金属クロム
層５５、錫層５６、電解クロム酸処理層５７及び塗油層
５８とから構成されている。このように、鋼板５４上に
表面処理被膜層５３が形成された薄肉金属テープを使用
することにより、滑り性が向上し、波付加工時に鋼管表
面へ傷がつくのをある程度防止することができる。ま
た、特開平６−３４６２５３号公報に造管用金属帯板５
９がある。この造管用金属帯板５９は、図７に示すよう
に、地金６０の表面に、金属クロム層６１、金属錫層６
２、酸化クロム層６３の順に表面被膜処理層を形成して
防錆処理された構造を有する。ここで、金属クロム層６
１の被膜量は８０〜１２０ｍｇ／ｍ2、金属錫層６２の
被膜量は１６０〜２００ｍｇ／ｍ2 、酸化クロム層６３
の被膜量は８〜１４ｍｇ／ｍ2 に設定されている。かか
る造管用金属帯板５９を用いて金属管６４を製造するラ
インが図８に示されている。造管用金属帯板５９に防錆
のための油を塗ってもよいが、上述したように造管用金
属帯板５９には防錆処理が施されているので、防錆のた
めの油を特に塗る必要はない。その場合は、造管用金属
帯板５９は、洗浄されることなく直接成形工具６５に導
かれて丸められ、ＴＩＧ溶接トーチ６６で合わせ部を溶
接され金属管６４となる。このように、洗浄工程を省略
したことで、有機溶剤などの使用を全廃でき、環境破壊
の防止に大きく寄与できると共に、これまで洗浄剤購入
に掛かっていた費用を不要とすることができる。2. Description of the Related Art Conventionally, as a corrugated steel pipe armored cable, there is a corrugated steel pipe armored cable 50 disclosed in Japanese Unexamined Patent Publication No. Hei 8-249941, the structure of which is shown in FIG. A corrugated steel pipe armored cable 50 is provided around a cable core 51 with a corrugated steel pipe 52 as a metal sheath.
And a surface treatment coating layer 53 is provided on the outer peripheral surface of the corrugated steel pipe 52. This surface-treated coating layer 53 is not formed after the corrugated steel pipe 52 is formed, but is a steel plate 54 which is a metal strip plate for corrugating before corrugating (see FIG. 6).
Applied on top. In addition, 53a is a protective sheath. FIG.
As shown in the figure, the surface treatment coating layer 53 is composed of a metal chromium layer 55, a tin layer 56, an electrolytic chromic acid treatment layer 57, and an oil coating layer 58 which are coated in a state of being superposed on a steel plate 54 as a base in order. Have been. As described above, by using the thin metal tape in which the surface treatment coating layer 53 is formed on the steel plate 54, the slipperiness is improved, and it is possible to prevent the steel pipe surface from being damaged during corrugating to some extent. . Also, Japanese Patent Application Laid-Open No. 6-346253 discloses a metal strip 5 for pipe making.
There are nine. As shown in FIG. 7, the metal strip plate 59 for forming a pipe has a metal chromium layer 61 and a metal tin layer 6 on the surface of a base metal 60.
2. It has a structure in which a surface coating layer is formed in the order of the chromium oxide layer 63 and is subjected to rustproofing. Here, the metal chromium layer 6
The coating amount of No. 1 is 80 to 120 mg / m 2 , the coating amount of the metal tin layer 62 is 160 to 200 mg / m 2 , and the chromium oxide layer 63
Is set to 8 to 14 mg / m 2 . FIG. 8 shows a line for manufacturing a metal tube 64 using the metal strip plate 59 for pipe making. Oil for rust prevention may be applied to the metal pipe plate 59 for pipe making. However, since the metal band plate 59 for pipe making has been subjected to rust prevention processing as described above, the oil for rust prevention is particularly used. No need to paint. In that case, the metal pipe strip 59 is directly guided to the forming tool 65 without being washed, and is rounded. The joining portion is welded by the TIG welding torch 66 to form the metal pipe 64. By omitting the cleaning step, the use of an organic solvent or the like can be completely eliminated, which can greatly contribute to the prevention of environmental destruction, and can eliminate the cost for purchasing a cleaning agent.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記した従来
の波付鋼管鎧装ケーブル５０や造管用金属帯板５９は、
未だ、以下の解決すべき課題を有していた。即ち、特開
平８−２４９９４１号公報に提示されている波付鋼管鎧
装ケーブル５０における表面処理被膜層５３は、下地で
ある鋼板５４上に被覆される金属クロム層５５、錫層５
６、電解クロム酸処理層５７及び塗油層５８はいずれも
均一厚で付着されるものであるため、ダイスを用いて真
円加工したり、回転ビーダーを用いて波付加工する際
に、表面処理被膜層５３の全面がダイスや回転ビーダー
の加工面と接触することになり抵抗が大きく、波付鋼管
５２の表面に未だ傷が発生し、この傷から腐食するおそ
れがある。また、特開平６−３４６２５３号公報に提示
されている造管用金属帯板５９の表面被覆処理層も、地
金６０の表面に、金属クロム層６１、金属錫層６２、酸
化クロム層６３の順に均一厚みで形成されているので、
ダイスを用いて真円加工したり、回転ビーダーを用いて
波付加工する際に、表面処理被膜層の全面が回転ビーダ
ーの加工面と接触することになり抵抗が大きく、波付鋼
管の表面に同様に傷が生じ、この傷から腐食するおそれ
がある。本発明は、このような事情に鑑みなされたもの
であり、ダイス加工や波付加工における傷の発生をなく
し、高耐腐食性を有し、かつ溶接性も良好で、高品質の
波付鋼管鎧装ケーブルを歩留りよく製造することができ
る造管用金属帯板、及び同帯板を用いた波付鋼管、及び
波付鋼管鎧装ケーブルを提供することを目的とする。However, the above-mentioned conventional corrugated steel pipe armored cable 50 and the metal strip 59 for pipe making are conventional.
It still had the following problems to be solved. That is, the surface treatment coating layer 53 in the corrugated steel pipe armored cable 50 disclosed in Japanese Patent Application Laid-Open No. H8-249941 consists of a metal chromium layer 55 and a tin layer 5 which are coated on a steel plate 54 as a base.
6. Since the electrolytic chromic acid treatment layer 57 and the oil coating layer 58 are all attached with a uniform thickness, the surface treatment is performed when a perfect circle is processed using a die or when a corrugated process is performed using a rotary beader. The entire surface of the coating layer 53 comes into contact with the processing surface of the die or the rotating beader, so that the resistance is large, and the surface of the corrugated steel pipe 52 is still damaged and may be corroded from the scratch. In addition, the surface coating treatment layer of the metal tube plate 59 for pipe making disclosed in JP-A-6-346253 also has a metal chromium layer 61, a metal tin layer 62, and a chromium oxide layer 63 on the surface of the base metal 60 in this order. Because it is formed with a uniform thickness,
When performing round processing using a die or corrugating using a rotary beader, the entire surface of the surface treatment coating layer comes into contact with the processing surface of the rotary beader, and resistance is large. Similarly, scratches can occur and can erode from the scratches. The present invention has been made in view of such circumstances, and eliminates the occurrence of scratches in die working and corrugating, has high corrosion resistance, has good weldability, and has high quality corrugated steel pipe. An object of the present invention is to provide a metal strip plate for pipe making capable of manufacturing an armored cable with good yield, a corrugated steel pipe using the strip, and a corrugated steel pipe armored cable.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するた
め、請求項１記載の造管用金属帯板は、鋼板の表面に多
数の錫片が分散する状態で錫を部分めっきし、前記錫片
及び非錫めっき部分上に薄肉の金属クロム層を被覆形成
し、該金属クロム層上に薄肉のクロム水和酸化物層を被
覆形成し、表面に前記錫片を核とする多数の被覆錫突起
を形成する。請求項２記載の波付鋼管は、請求項１記載
の造管用金属帯板を筒状に形成し、その合わせ部を溶接
した後、波付加工することによって製造される。請求項
３記載の波付鋼管鎧装ケーブルは、請求項２記載の波付
鋼管をケーブルの被覆層として用いる。In order to achieve the above object, a metal strip for pipe making according to claim 1 is obtained by partially plating tin with a large number of tin pieces dispersed on a surface of a steel sheet. And a thin metal chromium layer formed on the non-tin plated portion, a thin chromium hydrated oxide layer formed on the metal chromium layer, and a large number of coated tin projections having the tin pieces as nuclei on the surface. To form The corrugated steel pipe according to claim 2 is manufactured by forming the metal strip for pipe making according to claim 1 into a tubular shape, welding a joint portion thereof, and then performing corrugating processing. A corrugated steel pipe armored cable according to claim 3 uses the corrugated steel pipe according to claim 2 as a coating layer of the cable.
【０００５】[0005]
【発明の実施の形態】以下、添付図に示す一実施の形態
を参照して、本発明を具体的に説明する。図１に本発明
の一実施の形態に係る波付鋼管鎧装ケーブル１０の内部
構造を示す。図１に示すように、ケーブル心線１１は波
付鋼管１２内に同心円的に囲繞されており、波付鋼管１
２は保護ケーブル１３によって同心円的に囲繞されてい
る。また、波付鋼管１２の表面には薄肉の表面処理被膜
層１４が形成されており、その具体的構成が図２に模式
的に示されている。即ち、波付鋼管１２を形成する鋼板
１５の表面には、多数の錫片１６が分散する状態で錫が
部分めっきされている。また、錫片１６及び非錫めっき
部分（錫片１６が付着されていない鋼板１５の露出部）
上には薄肉の金属クロム層１７が所定の厚みで被覆形成
されている。なお、金属クロム層１７の厚みは非錫めっ
き部分（谷部）は相対的に厚く、錫片１６の被覆部（山
部）は相対的に薄くなっている。さらに、この金属クロ
ム層１７上には薄肉のクロム水和酸化物層１８が所定の
厚みで被覆形成されている。なお、クロム水和酸化物層
１８の厚みは非錫めっき部分（谷部）は相対的に厚く、
錫片１６の被覆部（山部）は相対的に薄くなっている。
そして、これらの錫片１６と、金属クロム層１７と、ク
ロム水和酸化物層１８によって、鋼板１５の表面に、錫
片１６を核とする多数の被覆錫突起１９が形成されてい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the accompanying drawings. FIG. 1 shows an internal structure of a corrugated steel pipe armored cable 10 according to one embodiment of the present invention. As shown in FIG. 1, a cable core 11 is concentrically surrounded by a corrugated steel pipe 12 and
2 is concentrically surrounded by a protection cable 13. In addition, a thin surface-treated coating layer 14 is formed on the surface of the corrugated steel pipe 12, and a specific configuration thereof is schematically shown in FIG. That is, the surface of the steel plate 15 forming the corrugated steel pipe 12 is partially plated with tin in a state where many tin pieces 16 are dispersed. Further, the tin piece 16 and the non-tin-plated portion (exposed portion of the steel plate 15 to which the tin piece 16 is not attached)
A thin metal chromium layer 17 is formed on the top with a predetermined thickness. The thickness of the metal chromium layer 17 is relatively thick at the non-tin-plated portion (valley portion), and relatively thin at the coating portion (peak portion) of the tin piece 16. Further, a thin chromium hydrated oxide layer 18 is formed on the metal chromium layer 17 with a predetermined thickness. In addition, the thickness of the chromium hydrated oxide layer 18 is relatively thick in the non-tin-plated portion (valley),
The coating portion (mountain) of the tin piece 16 is relatively thin.
The tin pieces 16, the metal chromium layer 17, and the chromium hydrated oxide layer 18 form a large number of coated tin protrusions 19 having the tin pieces 16 as nuclei on the surface of the steel plate 15.
【０００６】錫の部分めっき量は５０〜９００ｍｇ／ｍ
2 とするのが好ましい。部分めっき量が５０ｍｇ／ｍ2
未満の場合、潤滑効果が低下し、疵付き性が大となる。
一方、部分めっき量が９００ｍｇ／ｍ2 を越える場合、
ＴＩＧ溶接時に鋼中へのＳｎ拡散により、溶接部が脆化
し波付け加工時に割れを生じさせる。また、大きさを円
に換算した場合、直径０．５〜２０μｍの錫の電着して
いない鋼板１５の非錫めっき部分（露出部）が散在する
のが好ましい。The partial plating amount of tin is 50 to 900 mg / m
Preferably it is 2 . Partial plating amount is 50mg / m 2
If the amount is less than the above range, the lubricating effect is reduced, and the flaw is increased.
On the other hand, when the partial plating amount exceeds 900 mg / m 2 ,
The Sn diffusion into the steel at the time of TIG welding causes the welded portion to become brittle and cause cracking at the time of corrugating. Further, when the size is converted into a circle, it is preferable that non-tin-plated portions (exposed portions) of the steel plate 15 having a diameter of 0.5 to 20 μm and not having tin electrodeposited thereon are scattered.
【０００７】非錫めっき部分の直径が２０μｍを越える
と、鋼板１５の非錫めっき部分は連続した状態となり、
めっきされた錫のほとんどが０．１〜１μｍの粒状にな
り、鋼板１５と錫との密着が悪く、容易に鋼板１５から
剥離するので実用的でなく、また、後述するように潤滑
剤として機能するに十分な突出高さの被覆錫突起１９を
形成することができないからである。一方、非錫めっき
部分の大きさが０．５μｍ未満の場合、鋼板１５の表面
の大部分はめっきした錫で被われ、従来の極薄錫めっき
鋼板に類似したものとなり、潤滑効果が低下し加工時の
疵付きが大となるからである。When the diameter of the non-tin plated portion exceeds 20 μm, the non-tin plated portion of the steel plate 15 becomes continuous.
Most of the plated tin is in the form of particles of 0.1 to 1 μm, and the adhesion between the steel plate 15 and the tin is poor, and the tin is easily peeled off from the steel plate 15. This is not practical, and also functions as a lubricant as described later. This is because it is not possible to form the coated tin protrusion 19 having a sufficient height to perform the process. On the other hand, when the size of the non-tin-plated portion is less than 0.5 μm, most of the surface of the steel plate 15 is covered with plated tin and becomes similar to a conventional ultrathin tin-plated steel plate, and the lubricating effect is reduced. This is because scratches during processing become large.
【０００８】金属クロム層１７を形成される金属クロム
の量の被膜量は、好ましくは、７〜１２０ｍｇ／ｍ2 と
する。７ｍｇ／ｍ2 未満の場合は錫めっき後の鋼板１５
の露出部及び錫片１６を十分に被覆することができず、
本発明の目的の一つである良好な耐食性を確保できない
からである。一方、１２０ｍｇ／ｍ2 を越える場合は、
耐食性は向上するが、硬いクロム層により、加工時の疵
付きが大となるからである。The coating amount of the metal chromium forming the metal chromium layer 17 is preferably 7 to 120 mg / m 2 . If less than 7 mg / m 2, tin-plated steel sheet 15
Can not sufficiently cover the exposed portion and the tin piece 16,
This is because good corrosion resistance, which is one of the objects of the present invention, cannot be secured. On the other hand, if it exceeds 120 mg / m2,
This is because the corrosion resistance is improved, but the hard chromium layer increases flaws during processing.
【０００９】金属クロム層１７上に形成されるクロム水
和酸化物層１８の被膜量は、好ましくは、５〜５０ｍｇ
／ｍ2 （クロムとして）とする。クロム水和酸化物の量
がクロムとして５ｍｇ／ｍ2 未満の場合は、金属クロム
層１７の表面は十分被覆されず、耐食性が良くないから
である。また、クロム水和酸化物の量がクロムとして５
０ｍｇ／ｍ2 以上になると、金属クロムと同様、加工時
の疵付きが大となるからである。The coating amount of the hydrated chromium oxide layer 18 formed on the metal chromium layer 17 is preferably 5 to 50 mg.
/ M 2 (as chromium). If the amount of the chromium hydrated oxide is less than 5 mg / m 2 as chromium, the surface of the metal chromium layer 17 is not sufficiently covered, and the corrosion resistance is not good. Also, the amount of chromium hydrated oxide is 5 as chromium.
This is because if the content is 0 mg / m 2 or more, flaws at the time of processing become large as in the case of metallic chromium.
【００１０】次に、上記した波付鋼管鎧装ケーブル１０
の製造方法について、図３及び図４を参照して説明す
る。 （造管用金属帯板１５ａの製造工程）この工程は、上記
した波付鋼管鎧装ケーブル１０の波付鋼管１２の素材と
なる造管用金属帯板１５ａを製造する工程である。Next, the above-mentioned corrugated steel pipe armored cable 10
Will be described with reference to FIGS. 3 and 4. FIG. (Manufacturing process of pipe forming metal strip 15a) This step is a step of manufacturing a pipe forming metal strip 15a to be a material of the corrugated steel pipe 12 of the above-mentioned corrugated steel pipe armored cable 10.
【００１１】図３に示すように、通常の方法によって冷
間圧延され、連続焼鈍及び調質圧延された厚さ２．１ｍ
ｍの軟鋼板からなる鋼板１５（図３（ａ））を、電解脱
脂（ＮａＯＨ ７０ｇ／ｌ、温度７０℃、電流密度１０
Ａ／ｄｍ2 、時間２秒）（図３（ｂ））及び酸洗（Ｈ2
ＳＯ4 ７０ｇ／ｌ、温度２５℃、３秒間浸漬）（図３
（ｃ））を施した後、表１に示す条件下で特殊浴で錫め
っき（図３（ｄ））を行った後、さらに、表１に示す条
件下で電解クロム酸処理を行い（図３（ｅ））、金属ク
ロム及びクロム水和酸化物を生成して造管用金属帯板１
５ａを製造し、表面に塗油した後（図３（ｆ））、巻取
りを行う（図３（ｇ））。As shown in FIG. 3, a 2.1 m thick cold rolled, continuous annealed and temper rolled by a conventional method.
The steel sheet 15 (FIG. 3 (a)) composed of a mild steel sheet having a thickness of 70 m / L, a temperature of 70 ° C., and a current density of 10 g was prepared.
A / dm 2 , time 2 seconds) (FIG. 3 (b)) and pickling (H 2
SO 4 70 g / l, temperature 25 ° C., immersion for 3 seconds) (FIG. 3)
(C)), tin plating (FIG. 3D) in a special bath under the conditions shown in Table 1, and then electrolytic chromic acid treatment under the conditions shown in Table 1 (FIG. 3 (e)), forming chromium metal and chromium hydrated oxide to produce a metal strip for pipe making 1
5a is manufactured, and after oiling the surface (FIG. 3 (f)), winding is performed (FIG. 3 (g)).
【００１２】[0012]
【表１】 [Table 1]
【００１３】（波付鋼管１２の製造工程）この工程は、
上記した造管用金属帯板１５ａの製造工程で製造された
造管用金属帯板１５を用いて波付鋼管１２を製造する工
程である。図４に示すように、リールから巻きだした造
管用金属帯板１５ａの側縁部をトリマー２１によって切
り落として所定幅にした後、デフレクターローラー２
２、フォーマー２３及び成形ローラー２４に順に通して
筒状に成形する。その後、筒状に成形された造管用金属
帯板１５ａをダイス２５に通した後、ＴＩＧ溶接によっ
て接合部を連続的に溶接して電縫管２６を製造する。こ
の電縫管２６を回転ビーダー２７内に通して波付加工を
行い波付鋼管１２を製造する。(Manufacturing process of corrugated steel pipe 12)
This is a step of manufacturing the corrugated steel pipe 12 using the metal strip 15 for pipe making manufactured in the manufacturing process of the metal strip 15a for pipe making described above. As shown in FIG. 4, the side edge of the tube forming metal strip 15 a wound from the reel is cut off by a trimmer 21 to a predetermined width, and then the deflector roller 2 is cut off.
2. It is passed through a former 23 and a forming roller 24 in order to form a tube. After that, the tube-forming metal band plate 15a formed into a tubular shape is passed through the die 25, and the joint is continuously welded by TIG welding to manufacture the ERW pipe 26. The electric resistance welded pipe 26 is passed through a rotary beader 27 and subjected to a corrugating process to produce a corrugated steel pipe 12.
【００１４】（波付鋼管鎧装ケーブル１０の製造工程）
この工程は、波付鋼管１２の製造工程で製造された波付
鋼管１２を保護ケーブル１３によって囲繞することによ
って波付鋼管鎧装ケーブル１０を製造する。上記した波
付鋼管鎧装ケーブル１０の製造方法において、筒状に成
形された鋼板１５をダイス２５に通す際に、鋼板１５の
表面に形成されている多数の被覆錫突起１９を被覆する
金属クロム層１７とクロム水和酸化物層１８の厚みは、
非錫めっき部分に被覆した金属クロム層１７とクロム水
和酸化物層１８の厚みより相対的に薄くしているので、
この部分における金属クロム層１７とクロム水和酸化物
層１８が磨滅して錫片１６が露出することになる。そし
て、この錫片１６が潤滑剤として機能するので、ダイス
２５は鋼板１５を傷つけることなく真円加工することが
できる。また、その後のＴＩＧ溶接において、鋼板１５
の表面は多数の錫片１６が露出しているので、電縫管２
６の溶接性も向上することができる。また、電縫管２６
を回転ビーダー２７を通して波付加工を行う際にも、電
縫管２６の表面には錫片１６が露出しており、この錫片
１６が潤滑剤として働くので、外面にきずを付けること
なく波付加工を円滑に行うことができ、高耐食性を有す
る波付鋼管１２や波付鋼管鎧装ケーブル１０を歩留りよ
く製造することができる。(Manufacturing Process of Corrugated Steel Pipe Armored Cable 10)
In this step, the corrugated steel pipe 12 produced in the step of producing the corrugated steel pipe 12 is surrounded by the protective cable 13 to produce the corrugated steel pipe armored cable 10. In the above-described method of manufacturing the corrugated steel pipe armored cable 10, when the steel plate 15 formed into a cylindrical shape is passed through the die 25, the metallic chrome coating the numerous coated tin protrusions 19 formed on the surface of the steel plate 15. The thickness of layer 17 and chromium hydrated oxide layer 18 is
Since the thickness of the metal chromium layer 17 and the chromium hydrated oxide layer 18 covering the non-tin plating portion is relatively thinner,
The metal chromium layer 17 and the hydrated chromium oxide layer 18 in this portion are worn away and the tin pieces 16 are exposed. And since this tin piece 16 functions as a lubricant, the die 25 can be processed into a perfect circle without damaging the steel plate 15. In the subsequent TIG welding, the steel plate 15
Of the electric resistance welded tube 2 because many tin pieces 16 are exposed on the surface of
The weldability of No. 6 can also be improved. In addition, the electric resistance welded pipe 26
When the corrugating process is performed through the rotary beader 27, the tin pieces 16 are exposed on the surface of the electric resistance welded pipe 26, and the tin pieces 16 work as a lubricant. The brazing process can be performed smoothly, and the corrugated steel pipe 12 and the corrugated steel pipe armored cable 10 having high corrosion resistance can be manufactured with good yield.
【００１５】[0015]
【発明の効果】請求項１記載の造管用金属帯板において
は、鋼板の表面に多数の錫片が分散する状態で錫を部分
めっきし、錫片及び非錫めっき部分上に薄肉の金属クロ
ム層を均一に被覆形成し、金属クロム層上に薄肉のクロ
ム水和酸化物層を均一に被覆形成し、表面に錫片を核と
する多数の被覆錫突起を形成するようにしている。従っ
て、この造管用金属帯板を用いて波付鋼管を製造作業に
おいて、筒状に成形された鋼板をダイスに通す際に、鋼
板の表面に形成されている多数の被覆錫突起を被覆する
金属クロム層とクロム水和酸化物層の厚みは、非錫めっ
き部分に被覆した金属クロム層とクロム水和酸化物層の
厚みより相対的に薄くしているので、この部分における
金属クロム層とクロム水和酸化物層が磨滅して錫片が露
出することになる。そして、この錫片が潤滑剤として機
能するので、ダイスは鋼板を傷つけることなく真円加工
することができる。また、その後の溶接において、鋼板
の表面は多数の錫が突起状に露出しているので、電縫管
の溶接性も向上することができる。また、電縫管を回転
ビーダーを通して波付加工を行う際にも、電縫管の表面
には錫片が露出しており、この錫片が潤滑剤として働く
ので、外面にきずを付けることなく波付加工を円滑に行
うことができ、高耐食性を有する波付鋼管や波付鋼管鎧
装ケーブルを歩留りよく製造することができる。請求項
２記載の波付鋼管においては、請求項１記載の造管用金
属帯板を筒状に形成し、その合わせ部を溶接した後、波
付加工することによって製造されるので、外面にきずを
有しない高耐食性の波付鋼管を容易に製造することがで
きる。請求項３記載の波付鋼管鎧装ケーブルにおいて
は、請求項２記載の波付鋼管をケーブルの被覆層として
用いるので、外面に傷を有しない高耐食性を有する波付
鋼管が内挿された波付鋼管鎧装ケーブルを容易に製造す
ることができる。According to the metal strip for pipe making according to the first aspect of the present invention, tin is partially plated in a state where a large number of tin pieces are dispersed on the surface of the steel sheet, and a thin metal chromium is formed on the tin pieces and the non-tin plated portions. The layer is uniformly formed, a thin chromium hydrated oxide layer is uniformly formed on the chromium metal layer, and a large number of coated tin protrusions having tin pieces as nuclei are formed on the surface. Therefore, in the operation of manufacturing a corrugated steel pipe using the metal strip for pipe making, when a steel sheet formed into a cylindrical shape is passed through a die, a metal covering a large number of coated tin protrusions formed on the surface of the steel sheet is used. The thickness of the chromium layer and the chromium hydrated oxide layer is relatively thinner than the thickness of the metal chromium layer and the chromium hydrated oxide layer coated on the non-tin-plated portion. The hydrated oxide layer is worn away, exposing tin flakes. And since this tin piece functions as a lubricant, the die can be processed into a perfect circle without damaging the steel plate. Further, in the subsequent welding, since a large number of tins are exposed in the form of protrusions on the surface of the steel plate, the weldability of the ERW pipe can be improved. Also, when corrugating the ERW pipe through a rotary beader, tin pieces are exposed on the surface of the ERW pipe, and this tin piece acts as a lubricant, so that there is no flaw on the outer surface Corrugation can be performed smoothly, and a corrugated steel pipe or a corrugated steel pipe armored cable having high corrosion resistance can be manufactured with high yield. In the corrugated steel pipe according to the second aspect, the metal strip for pipe making according to the first aspect is formed in a tubular shape, and the joined portion is welded and then manufactured by corrugating. A high corrosion-resistant corrugated steel pipe having no corrosion can be easily manufactured. In the corrugated steel pipe armored cable according to the third aspect, since the corrugated steel pipe according to the second aspect is used as a coating layer of the cable, the corrugated steel pipe having high corrosion resistance and having no scratches on the outer surface is inserted. A steel pipe armored cable can be easily manufactured.
【図１】本発明の一実施の形態に係る波付鋼管鎧装ケー
ブルの一部断面図である。FIG. 1 is a partial sectional view of a corrugated steel pipe armored cable according to an embodiment of the present invention.
【図２】表面処理被膜層の断面形態を示す模式図であ
る。FIG. 2 is a schematic view showing a cross-sectional form of a surface-treated coating layer.
【図３】造管用金属帯板の製造工程説明図である。FIG. 3 is an explanatory view of a production process of a metal strip for pipe making.
【図４】波付鋼管の製造工程説明図である。FIG. 4 is an explanatory view of a manufacturing process of a corrugated steel pipe.
【図５】従来の波付鋼管鎧装ケーブルの部分断面図であ
る。FIG. 5 is a partial sectional view of a conventional corrugated steel pipe armored cable.
【図６】同表面処理被膜層の拡大断面図である。FIG. 6 is an enlarged sectional view of the surface treatment film layer.
【図７】従来の造管用金属帯板の断面図である。FIG. 7 is a sectional view of a conventional metal strip for pipe making.
【図８】同造管用金属帯板による波付鋼管鎧装ケーブル
の製造ラインの説明図である。FIG. 8 is an explanatory view of a production line for a corrugated steel pipe armored cable using the metal strip for pipe making.
１０ 波付鋼管鎧装ケーブル １１ ケーブル心線 １２ 波付鋼管 １３ 保護ケーブル １４ 表面処理被膜層 １５ 鋼板 １５ａ 造管用金属帯板 １６ 錫片 １７ 金属クロム層 １８ クロム水和酸化物層 １９ 被覆錫突起 ２１ トリマー ２２ デフレクターローラー ２３ フォーマー ２４ 成形ローラー ２５ ダイス ２６ 電縫管 ２７ 回転ビーダー DESCRIPTION OF SYMBOLS 10 Corrugated steel pipe armored cable 11 Cable core wire 12 Corrugated steel pipe 13 Protection cable 14 Surface treatment coating layer 15 Steel plate 15a Metal strip for pipe making 16 Tin piece 17 Metal chromium layer 18 Chromium hydrated oxide layer 19 Coated tin projection 21 Trimmer 22 Deflector roller 23 Former 24 Forming roller 25 Dice 26 ERW pipe 27 Rotating beader
Claims (3)
で錫を部分めっきし、前記錫片及び非錫めっき部分上に
薄肉の金属クロム層を被覆形成し、該金属クロム層上に
薄肉のクロム水和酸化物層を被覆形成し、表面に前記錫
片を核とする多数の被覆錫突起を形成することを特徴と
する造管用金属帯板。1. A method of forming a thin metal chromium layer on a surface of a steel sheet by partially plating tin in a state in which a large number of tin pieces are dispersed, forming a thin metal chromium layer on the tin piece and the non-tin plating part. What is claimed is: 1. A metal strip for pipe making, comprising: forming a thin hydrated chromium oxide layer on a surface thereof;
状に形成し、その合わせ部を溶接した後、波付加工する
ことによって製造される波付鋼管。2. A corrugated steel pipe manufactured by forming the metal strip plate for pipe making according to claim 1 into a tubular shape, welding a joint portion thereof, and then performing a corrugating process.
覆層として用いることを特徴とする波付鋼管鎧装ケーブ
ル。3. A corrugated steel pipe armored cable, wherein the corrugated steel pipe according to claim 2 is used as a coating layer of a cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16202897A JP3442617B2 (en) | 1997-06-05 | 1997-06-05 | Corrugated steel pipe and corrugated steel pipe armored cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16202897A JP3442617B2 (en) | 1997-06-05 | 1997-06-05 | Corrugated steel pipe and corrugated steel pipe armored cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10340633A true JPH10340633A (en) | 1998-12-22 |
| JP3442617B2 JP3442617B2 (en) | 2003-09-02 |
Family
ID=15746709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16202897A Expired - Fee Related JP3442617B2 (en) | 1997-06-05 | 1997-06-05 | Corrugated steel pipe and corrugated steel pipe armored cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3442617B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989117A (en) * | 2019-12-25 | 2020-04-10 | 天津立孚光电科技股份有限公司 | Miniature temperature measuring optical cable |
| CN115789399A (en) * | 2022-12-06 | 2023-03-14 | 华创天元实业发展有限责任公司 | A steel skeleton plastic pipe reinforced with chromium layer |
-
1997
- 1997-06-05 JP JP16202897A patent/JP3442617B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989117A (en) * | 2019-12-25 | 2020-04-10 | 天津立孚光电科技股份有限公司 | Miniature temperature measuring optical cable |
| CN115789399A (en) * | 2022-12-06 | 2023-03-14 | 华创天元实业发展有限责任公司 | A steel skeleton plastic pipe reinforced with chromium layer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3442617B2 (en) | 2003-09-02 |
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