JPS6263680A - Treatment of inside of tubular metallic material - Google Patents
Treatment of inside of tubular metallic materialInfo
- Publication number
- JPS6263680A JPS6263680A JP20296685A JP20296685A JPS6263680A JP S6263680 A JPS6263680 A JP S6263680A JP 20296685 A JP20296685 A JP 20296685A JP 20296685 A JP20296685 A JP 20296685A JP S6263680 A JPS6263680 A JP S6263680A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- pipe
- coating
- treatment
- reduced pressure
- 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
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は金属管材の内面を異種金属で処理JるIノ法に
関するもので、例えば、上下水道水、温水。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for treating the inner surface of a metal pipe material with a different metal, such as water and sewage water and hot water.
)fη水、油等の液体用供給管、燃料ガス等のガス体用
供給管、管内外の熱伝達を利用する伝熱管、圧力伝達管
等の管材の内面処理方法として応用りることができる。) fη Can be applied as an inner surface treatment method for pipe materials such as supply pipes for liquids such as water and oil, supply pipes for gas bodies such as fuel gas, heat transfer pipes that utilize heat transfer inside and outside the pipe, pressure transfer pipes, etc. .
[従来技術とその問題点]
従来金属管材の内面処理り法としては、次のような方法
が知られているが、夫々欠点を有している。[Prior art and its problems] The following methods are known as conventional methods for treating the inner surface of metal pipe materials, but each method has its own drawbacks.
(1)電気メツキ方法
電気メッキによる管材の内面処理では、メッキ面に対し
て必ず陽極を設置する必要がある。そしてメッキ面を陽
極との間隔は常に一定にしてメッキ厚さを均一にし、さ
らに両極間で短絡しないようにりる必要があった。この
ため、小口径の管材や長尺材の内面をメッキするために
はメッキ液の供給と電極の保持がViJMであった。(1) Electroplating method When treating the inner surface of a pipe material by electroplating, it is necessary to install an anode on the plated surface. It was also necessary to maintain a constant distance between the plated surface and the anode to ensure uniform plating thickness, and to prevent short circuits between the two electrodes. For this reason, in order to plate the inner surface of a small-diameter pipe material or a long material, ViJM is required for supplying the plating solution and holding the electrode.
(2無電解メッキ方法
無電解メッキ方法では、電気メツキ方法と異なり陽極が
不要となり、小口径管に適用「1能であるが、メッキ液
中の還元剤と金属イオンの潤度が減少するとメッキ析出
速度が減少する。メツ1−液の寿命は比較的短時間で大
量の材料を処理−するためには不適当である。また無電
解メッキを適用できる金属は、還元剤の能力とメッキ金
属の還元電位との関係で制限があり、卑金属は適用でき
なかった。(2. Electroless plating method) Unlike the electroplating method, the electroless plating method does not require an anode and is applicable to small-diameter pipes. However, when the moisture content of the reducing agent and metal ions in the plating solution decreases, The deposition rate decreases.The lifetime of the metal solution is unsuitable for processing large amounts of material in a relatively short period of time.Also, the metals to which electroless plating can be applied depend on the ability of the reducing agent and the plating metal. Base metals could not be applied due to limitations related to the reduction potential of
電気メッキ、無電解メッキ共通の欠点としては、前処理
、後処理を充分に行なわなければ不均一な処理面となっ
たり、密呑不良となる。また最大の欠点としては、メッ
キ液は毒物、劇物を含むものが多く、排水処理設備の保
守を充分に行う必要がある。A common drawback of electroplating and electroless plating is that if pre-treatment and post-treatment are not carried out sufficiently, the treated surface will be uneven and poor adhesion will occur. The biggest drawback is that many of the plating solutions contain poisonous and deleterious substances, and the wastewater treatment equipment must be adequately maintained.
(a 溶融メッキ方法
管内の溶融メッキを行う方法としては、金属溶融槽に浸
漬する方法と、管内面にメッキ金属を挿入した後管材を
加熱し回転づ−る方法がある。これらの方法では腐食性
のフラックスを必要とすること、長尺材、コイル材に適
用することが難しい等の欠点があった。(a. Hot-dip plating method There are two methods for hot-dip plating inside a pipe: immersing it in a metal melting tank, and heating and rotating the pipe material after inserting plated metal into the inner surface of the pipe. These methods prevent corrosion. This method has drawbacks such as requiring a specific flux and being difficult to apply to long materials and coil materials.
[発明の目的]
本発明の目的は、前記した従来技術の欠点を解消し、長
尺管材にも適用可能な内面処理方法を提供することにあ
る。[Object of the Invention] An object of the present invention is to eliminate the drawbacks of the prior art described above and to provide an inner surface treatment method that can be applied to long pipe materials.
[発明の概要]
本発明は、金属管材の内面の一部に被覆用金属を設置し
、その管材を真空もしくは減圧環境中で加熱して被覆用
金属を蒸発気化させることによって、それを管材内表面
に付着させることにある。[Summary of the Invention] The present invention provides coating metal on a part of the inner surface of a metal pipe material, and heats the pipe material in a vacuum or reduced pressure environment to evaporate the coating metal. The purpose is to attach it to the surface.
ある種の金属は多くの金属材料の融点以下にJ3いて大
きな蒸気圧を右している。例えば1 ImRH(Jのに
蒸気圧となる金属の温度は、Zn:487℃。Some metals have a high vapor pressure below the melting point of many metal materials. For example, the temperature of the metal that has a vapor pressure of 1 ImRH (J) is 487°C for Zn.
Mq:621℃、C:d:394℃、Se:356℃等
であり、これらの蒸気中に他の金属を置くことにより前
記金属蒸気は伯の金属の表面に付着し一部は基体金属中
に拡散し、合金化する。Mq: 621°C, C: d: 394°C, Se: 356°C, etc., and by placing other metals in these vapors, the metal vapors adhere to the surface of the metal, and some of them are absorbed into the base metal. diffuses into and alloys.
使用し得る金属は、前記したものの他に、AS。In addition to the metals mentioned above, metals that can be used include AS.
!−1g、Rb、Te等が上げられ、それらを主成分と
づる合金も使用することができる。! -1g, Rb, Te, etc., and alloys containing these as main components can also be used.
一般に真空蒸着では、真空度を10うtorr程度とし
、基体金属は蒸発源よりは遥かに低い温度と・されるが
、本発明では蒸発源と基体金属は同温度とて長尺材でも
均一な被覆条件となり、真空度も10′2torr程度
でも被覆が可能で、工業生産に適している。Generally, in vacuum evaporation, the degree of vacuum is set to about 10 Torr, and the temperature of the base metal is much lower than that of the evaporation source.However, in the present invention, the evaporation source and the base metal are kept at the same temperature, so that even long materials can be uniformly coated. The coating conditions are such that coating can be performed even at a vacuum degree of about 10'2 torr, making it suitable for industrial production.
金属管材としては、AI!、AIJ、CLJ、 Fe、
Mn、N i、pb、pt、”ri、Cr、Co、Pd
。For metal pipe materials, AI! , AIJ, CLJ, Fe,
Mn, Ni, pb, pt, "ri, Cr, Co, Pd
.
Mo、Nb、Tc、Ru、Rh、Zr、Y、Hf。Mo, Nb, Tc, Ru, Rh, Zr, Y, Hf.
Ta、W、Re、Os、Irの1種もくしはこれらを主
成分どするものを用いることができるが、その内面は、
平滑であっても管長手方向と平行ないし螺旋状の溝もし
くは突起、あるいは不連続な凹凸を有していてもよい。One or more of Ta, W, Re, Os, and Ir can be used as the main component, but the inner surface is
Even if it is smooth, it may have grooves or protrusions parallel to the longitudinal direction of the pipe or spirally, or discontinuous irregularities.
[発明の実施例]
実施例1
外径15.9m!n、肉厚0.7a*、長さ400mの
コイル状の銅管内面に、深さ0.1M、幅0.3Mの溝
を0.6mのピッチで管長手方向に加工しておき、その
溝に、200メツシユのMq粉末80重量部とグリセリ
ン20重り部を混合しベース1へ状としたものを付着さ
せた。[Embodiments of the invention] Example 1 Outer diameter 15.9m! Grooves with a depth of 0.1M and a width of 0.3M were machined in the longitudinal direction of the pipe at a pitch of 0.6m on the inner surface of a coiled copper pipe with a wall thickness of 0.7a* and a length of 400m. A mixture of 80 parts by weight of 200 mesh Mq powder and 20 parts by weight of glycerin and shaped into the base 1 was adhered to the groove.
この鋼管を真空焼鈍装置で104torrまで減圧した
状態で750°C11時間加熱した。This steel pipe was heated at 750° C. for 11 hours in a vacuum annealing device under reduced pressure to 104 torr.
1!7られた鋼管内全面に、Mg11度最大5%を含む
Cu−Mg合金が5μmの厚さで形成された。A Cu-Mg alloy containing a maximum of 5% of Mg 11 degrees was formed to a thickness of 5 μm on the entire surface inside the steel pipe.
実施例2
外径18.0FM4.肉厚1.6端、長さ10mの直状
鋼管の両端内に、150メツシユのZnn粉末8徂
ーストを30or付着させておき、実施例1と同様f.
: 1 0′2torrの環境で、600℃,30分加
熱した。Example 2 Outer diameter 18.0FM4. 150 meshes of Znn powder 8 x yeast was attached to both ends of a straight steel pipe with a wall thickness of 1.6 mm and a length of 10 m, and a f.
: Heated at 600°C for 30 minutes in an environment of 10'2 torr.
1りられた鋼管内外面全面に、3μmの7n被覆層が形
成された。A 3 μm thick 7N coating layer was formed on the entire inner and outer surfaces of the steel pipe.
実施例3
外径15.9繭.肉厚0、7 m 、長さ400mのコ
イル状鋼管の片端末内にZn粉末を配置し、他端末から
排気しながらコイル状鋼管を600℃で1時間加熱した
。これによりコイル片端で蒸発したzn蒸気は、排気さ
れている他端末に向って流れ、片端より順次銅管内仝而
にZnが付着し、内面Zn被覆鋼管を得ることができた
。Example 3 Cocoon outer diameter 15.9. Zn powder was placed inside one end of a coiled steel tube with a wall thickness of 0.7 m and a length of 400 m, and the coiled steel tube was heated at 600° C. for 1 hour while exhausting air from the other end. As a result, the Zn vapor evaporated at one end of the coil flowed toward the other end, which was evacuated, and Zn adhered to the interior of the copper tube sequentially from one end, making it possible to obtain a Zn-coated steel tube on the inner surface.
被覆用金属の設置方式は、当該金属を小型開放容器に入
れて管内に送り込んでもよいし、線材として管内に送り
込んでもよい。このにうに、管材内面に設置する被覆用
金属の形状は、粉末1粒状。The metal for coating may be installed by placing the metal in a small open container and feeding it into the pipe, or by feeding it into the pipe as a wire. In this case, the shape of the coating metal installed on the inner surface of the tube is in the form of a single particle of powder.
箔状.液状等特に限定されない。Foil-like. It is not particularly limited to liquid form.
また、実施例3において片端から排気しながら蒸着させ
る場合、被覆用金属を細端の管内に配首しなくても、蒸
発した金属蒸気が管内に導入されるならば、管外に配置
してもよい。例えば他端にラッパ管の如き導入管を用い
てその部分に金属蒸気が導入されるようにすることも可
能である。In addition, in Example 3, when vapor deposition is performed while exhausting air from one end, the coating metal does not have to be placed inside the tube at the narrow end, but if the evaporated metal vapor is introduced into the tube, it can be placed outside the tube. Good too. For example, it is also possible to use an introduction pipe such as a trumpet pipe at the other end to introduce metal vapor into that part.
尚、管材内面として実施例1のような合金層を望む場合
、被覆処理と同時か、或は被覆後に加熱拡散処理を行な
い、管材質と被覆金属とを合金化させてもよい。If an alloy layer like that in Example 1 is desired for the inner surface of the tube material, a heat diffusion treatment may be performed at the same time as the coating treatment or after the coating treatment to alloy the tube material and the coating metal.
[発明の効果]
本発明は真空もしくは減圧環境中で加熱して、被覆用金
属を蒸発気化させて管材内面に付着させる方法であるか
ら、前処理は簡単な洗浄で充分であり、毒物や薬品を使
用しないですむため、完全性が高く、長尺部に対しても
容易に適用することができる。また本発明の方法であれ
ば、湿式メッキが不可能なMg、AJ、l」G等の処理
も可能である。[Effects of the Invention] Since the present invention is a method of heating in a vacuum or reduced pressure environment to evaporate the coating metal and attach it to the inner surface of the pipe material, simple cleaning is sufficient for pretreatment, and poisons and chemicals are removed. Because it does not require the use of , it has high integrity and can be easily applied to long parts. Furthermore, with the method of the present invention, it is possible to treat Mg, AJ, 1'G, etc., which cannot be wet-plated.
Claims (1)
の管材を真空もしくは減圧環境中で加熱して前記被覆用
金属を蒸発気化させることによつて前記管材内面に付着
させることを特徴とする金属管材の内面処理方法。(1) A coating metal is installed on a part of the inner surface of a metal pipe material, and the coating metal is evaporated and attached to the inner surface of the pipe material by heating the pipe material in a vacuum or reduced pressure environment. Features a method for treating the inner surface of metal pipe materials.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20296685A JPS6263680A (en) | 1985-09-13 | 1985-09-13 | Treatment of inside of tubular metallic material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20296685A JPS6263680A (en) | 1985-09-13 | 1985-09-13 | Treatment of inside of tubular metallic material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6263680A true JPS6263680A (en) | 1987-03-20 |
Family
ID=16466111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20296685A Pending JPS6263680A (en) | 1985-09-13 | 1985-09-13 | Treatment of inside of tubular metallic material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6263680A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02243779A (en) * | 1989-03-17 | 1990-09-27 | Sanou Kogyo Kk | Production of steel pipe having plated inner surface |
-
1985
- 1985-09-13 JP JP20296685A patent/JPS6263680A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02243779A (en) * | 1989-03-17 | 1990-09-27 | Sanou Kogyo Kk | Production of steel pipe having plated inner surface |
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