JP2002235159A - Al-Zn ALLOY PLATED WIRE AND PRODUCTION METHOD THEREFOR - Google Patents
Al-Zn ALLOY PLATED WIRE AND PRODUCTION METHOD THEREFORInfo
- Publication number
- JP2002235159A JP2002235159A JP2001031083A JP2001031083A JP2002235159A JP 2002235159 A JP2002235159 A JP 2002235159A JP 2001031083 A JP2001031083 A JP 2001031083A JP 2001031083 A JP2001031083 A JP 2001031083A JP 2002235159 A JP2002235159 A JP 2002235159A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- plating
- alloy
- plating layer
- plated wire
- 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
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- Coating With Molten Metal (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はＡｌ−Ｚｎ合金めっ
き線およびその製造方法に関し、さらに詳しくは、微細
初晶粒からなるＡｌ−Ｚｎめっき組織を有するＡｌ−Ｚ
ｎ合金めっき線およびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an Al--Zn alloy plated wire and a method for producing the same, and more particularly, to an Al--Z alloy having an Al--Zn plated structure composed of fine primary grains.
The present invention relates to an n-alloy plated wire and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】Ａｌ−Ｚｎ合金めっき線は、耐蝕性が優
れていて、塩害に強いという特徴を有しており、例えば
牡蠣養殖場において、牡蠣の取り付け部材として使われ
ている。ところが、想定した寿命よりも早く断線すると
いう事故が発生し、この原因について調査したところ、
断線個所がめっき線の繰り返し曲げ部分に集中している
ことを確認した。そこで、めっき線の耐疲労性に着目し
て研究を進めたところ、耐疲労性が劣るめっき線では、
めっき層の耐曲げ加工性が悪くて繰り返し曲げ部分にお
けるめっき層にクラックが入り、同クラック部分が疲労
断線の起点になることを知見した。また同時に、このめ
っき線では、Ａｌ−Ｚｎめっき層部におけるめっき組織
の初晶構造が粗粒初晶（図５の（Ａ）参照）を呈してい
ることを知見した。そして、このクラック伝播のメカニ
ズムは、前記したクラックが、Ａｌ−Ｚｎめっき層部か
ら始まってＡｌ−Ｚｎ−Ｆｅ合金層にまで伝播し、やが
て鋼線に伝播して、鋼線が疲労断線するに至ることも知
見した。本発明者は、鋭意研究の結果、耐疲労性および
耐曲げ加工性に富むＡｌ−Ｚｎ合金めっき線は、Ａｌ−
Ｚｎめっき層部におけるめっき組織の初晶が微細初晶粒
を呈していることを知見して本発明を完成したものであ
る。2. Description of the Related Art Al-Zn alloy plated wires have excellent corrosion resistance and are resistant to salt damage. For example, they are used as oyster attachment members in oyster farms. However, there was an accident that the wire breaks earlier than expected, and we investigated the cause.
It was confirmed that the disconnection point was concentrated on the repeatedly bent portion of the plated wire. Therefore, we focused on the fatigue resistance of the plated wire and conducted research.
The inventor has found that the bending resistance of the plating layer is poor and cracks occur in the plating layer in the repeatedly bent portion, and the crack portion becomes a starting point of fatigue disconnection. At the same time, it was found that, in this plated wire, the primary crystal structure of the plating structure in the Al—Zn plating layer portion exhibited a coarse primary crystal (see FIG. 5A). The mechanism of the crack propagation is that the above-described crack starts from the Al-Zn plating layer portion, propagates to the Al-Zn-Fe alloy layer, and eventually propagates to the steel wire, and the steel wire breaks due to fatigue. I also found that it would lead. The present inventor has conducted intensive studies and found that an Al—Zn alloy plated wire that is rich in fatigue resistance and bending resistance
The present invention has been completed by finding that the primary crystals of the plating structure in the Zn plating layer portion exhibit fine primary crystal grains.
【０００３】[0003]
【発明が解決しようとする課題】解決しようとする課題
は、第１には、Ａｌ−Ｚｎめっき層部における靭性が高
くて、Ａｌ−Ｚｎ−Ｆｅ合金層部へのクラックの伝播が
抑制されて、耐疲労性および耐曲げ加工性に富むＡｌ−
Ｚｎ合金めっき線を、第２には、Ａｌ−Ｚｎめっき層部
における靭性が高くて、Ａｌ−Ｚｎ−Ｆｅ合金層部への
クラックの伝播が抑制されて、耐疲労性および耐曲げ加
工性に富むＡｌ−Ｚｎ合金めっき線を効率良く生産可能
な製造方法を提供することにある。The first problem to be solved is that the toughness of the Al—Zn plating layer is high, and the propagation of cracks to the Al—Zn—Fe alloy layer is suppressed. Al-, rich in fatigue resistance and bending resistance
Secondly, the Zn alloy plated wire has a high toughness in the Al-Zn plating layer portion, suppresses the propagation of cracks to the Al-Zn-Fe alloy layer portion, and provides a fatigue resistance and bending workability. An object of the present invention is to provide a manufacturing method capable of efficiently producing a rich Al—Zn alloy plated wire.
【０００４】[0004]
【課題を解決するための手段】本発明は前記した課題を
達成するため、Ａｌ−Ｚｎ合金めっき線では、Ａｌ−Ｚ
ｎめっき層部のＡｌ含有率が８〜２０％で、このＡｌ−
Ｚｎめっき層部のめっき組織は、初晶の巾が３μｍ以下
の微細初晶粒による微細化率を８０％以上にしてあるこ
とを特徴とする。そして、本発明のＡｌ−Ｚｎ合金めっ
き線の製造方法では、ガス絞り部内における線材立上り
部のＡｌ−Ｚｎめっき浴面に無酸化性ガスを供給して浴
面の酸化を防止している前記線材立上り部から線材を立
上げ、然る後に、線材を前記ガス絞り部上方の強制空冷
装置により風速が１５〜４０ｍ／ｓの空冷雰囲気下で空
冷した後、水冷することで、初晶の巾が３μｍ以下の微
細初晶粒による微細化率を８０％以上にしてあるめっき
組織からなるＡｌ含有率８〜２０％のＡｌ−Ｚｎめっき
層部を有するＡｌ−Ｚｎ合金めっき線を製造するように
したことを特徴とする。In order to achieve the above-mentioned object, the present invention provides an Al-Zn alloy plated wire which is made of Al-Z
The Al content of the n-plated layer portion is 8 to 20%.
The plating structure of the Zn plating layer portion is characterized in that a primary crystal having a width of 3 μm or less has a refinement rate of 80% or more by fine primary grains. In the method for producing an Al—Zn alloy-plated wire according to the present invention, the non-oxidizing gas is supplied to the Al—Zn plating bath surface at the rising portion of the wire rod in the gas narrowing portion to prevent oxidation of the bath surface. The wire rod is raised from the rising portion, and after that, the wire rod is air-cooled by a forced air cooling device above the gas throttle unit in an air-cooled atmosphere having a wind speed of 15 to 40 m / s, and then water-cooled to reduce the width of the primary crystal. An Al—Zn alloy plated wire having an Al—Zn plated layer portion having an Al content of 8 to 20% and having an Al content of 8 to 20% made of a plating structure in which the refinement rate by fine primary crystal grains of 3 μm or less is set to 80% or more is manufactured. It is characterized by the following.
【０００５】本発明におけるＡｌ−Ｚｎめっき層部の微
細初晶粒とは、Ａｌ−Ｚｎめっき組織における初晶の巾
がゼロを除く３μｍ以下（３μｍを含む）の初晶粒であ
り、３μｍを越えると耐疲労性および耐曲げ加工性が劣
ることになる。そして、微細初晶粒によるＡｌ−Ｚｎめ
っき組織の微細化率とは、Ａｌ−Ｚｎめっき組織の初晶
に占める微細初晶粒の面積比であり、この微細化率は８
０〜１００％で、微細化率が下限の８０％に満たない場
合は、Ａｌ−Ｚｎめっき層部が靭性の面で劣り、クラッ
クが伝播し易くて、耐疲労性および耐曲げ加工性が劣る
Ａｌ−Ｚｎめっき層部になる。そして、強制空冷装置に
おける風速が１５〜４０ｍ／ｓの範囲外では、例えば１
５ｍ／ｓに満たない場合、めっき組織の結晶構造は粗粒
初晶〜中粒初晶（図５の（Ｂ）参照）を呈していて微細
初晶粒を望めず、微細化率が８０％以上である微細初晶
粒からなるめっき組織のＡｌ−Ｚｎめっき層部を得られ
ない。また、４０ｍ／ｓを越えると、めっき層部合金が
風で流されて表面がざら状になり、外観が悪化する。か
かる風速の冷却空気は、温度が２０〜６０℃であり、こ
の冷却空気の風速と温度の関係は、比例関係にあり、温
度が低ければ風速も弱くなり、温度が高ければ風速も速
くなる。In the present invention, the fine primary grains of the Al-Zn plating layer portion are primary grains having a primary crystal width of 3 μm or less (including 3 μm) excluding zero in the Al—Zn plating structure. If it exceeds, the fatigue resistance and the bending resistance are inferior. The refinement rate of the Al—Zn plating structure by the fine primary grains is the area ratio of the fine primary grains to the primary crystals of the Al—Zn plating structure, and this refinement rate is 8%.
When the refinement ratio is less than the lower limit of 80% at 0 to 100%, the Al—Zn plating layer portion is inferior in terms of toughness, cracks are easily propagated, and fatigue resistance and bending resistance are inferior. It becomes the Al-Zn plating layer part. When the wind speed in the forced air cooling device is out of the range of 15 to 40 m / s, for example, 1
When it is less than 5 m / s, the crystal structure of the plating structure is coarse primary crystals to medium primary crystals (see FIG. 5B), and fine primary crystals cannot be expected, and the refinement rate is 80%. An Al-Zn plating layer portion having a plating structure composed of fine primary crystal grains as described above cannot be obtained. On the other hand, if it exceeds 40 m / s, the alloy of the plating layer portion is blown away by the wind, and the surface becomes rough and the appearance is deteriorated. The temperature of the cooling air having such a wind speed is 20 to 60 ° C. The relationship between the wind speed of the cooling air and the temperature is in a proportional relationship. The lower the temperature, the lower the wind speed, and the higher the temperature, the higher the wind speed.
【０００６】[0006]
【発明の実施の形態】図１および図２には本発明のＡｌ
−Ｚｎ合金めっき線における実施の1形態を例示してお
り、Ａｌ−Ｚｎ合金めっき線１は、鋼線或いは鉄線等か
らなる線材２表面にＡｌ−Ｚｎめっき層部３を形成して
いる。このＡｌ−Ｚｎめっき層部３のＡｌ含有率は１１
％であり、そして、めっき組織における結晶は、初晶の
巾ａが２μｍの微細初晶粒３ａであると共に、めっき層
部３の微細初晶粒３ａによる微細化率を９０％に形成し
ている。1 and 2 show the Al of the present invention.
1 illustrates an embodiment of a Zn alloy plated wire, and an Al—Zn alloy plated wire 1 has an Al—Zn plated layer portion 3 formed on the surface of a wire 2 made of a steel wire, an iron wire, or the like. The Al-Zn plating layer 3 has an Al content of 11
%, And the crystals in the plating structure are fine primary crystal grains 3a having a primary crystal width a of 2 μm, and the refining rate by the fine primary crystal grains 3a of the plating layer portion 3 is formed to 90%. I have.
【０００７】図３には本発明のＡｌ−Ｚｎ合金めっき線
の製造方法に採用した製造装置を例示しており、この製
造装置５は、Ａｌ−Ｚｎめっき槽６におけるガス絞り部
７内の線材立上り部のめっき浴面に無酸化性ガスを供給
可能に形成していて、無酸化性ガスで浴面の酸化を防止
して、酸化物が線材２に付着するのを防いでいる。この
無酸化性ガスとしての都市ガス或いは天然ガスを原料と
する発熱型雰囲気ガスとは、理論混合比よりもやや少な
い空気比の混合ガスを燃焼させて得られる雰囲気ガス
で、加熱及び触媒を通じて得られる吸熱型とは異なり、
外から熱を加えなくても燃焼が継続するものである。例
えば、発熱型ガスの組成は、ＣＯ２：９％、ＣＯ:４〜
５％、Ｈ２：４〜５％、Ｎ２：８０％とし、露点が−４
０℃以下になるまで冷凍して吸湿したものである。ま
た、このガスの組成は、Ｎ２、Ｃ３Ｈ ８、Ｃ４Ｈ１０等
の無酸化性ガスであっても良い。FIG. 3 shows an Al—Zn alloy plated wire of the present invention.
Illustrates a manufacturing apparatus adopted in the manufacturing method of
The manufacturing apparatus 5 includes a gas throttle unit in the Al-Zn plating tank 6.
Supply non-oxidizing gas to the plating bath surface at the rising part of the wire rod in 7
Formed as possible, preventing oxidation of bath surface with non-oxidizing gas
Thus, the oxide is prevented from adhering to the wire 2. this
Using city gas or natural gas as non-oxidizing gas as raw material
Is slightly lower than the theoretical mixing ratio.
Atmosphere gas obtained by burning a mixed gas with a low air ratio
In the endothermic type obtained through heating and catalyst,
Combustion continues without applying heat from the outside. An example
For example, the composition of the exothermic gas is CO2: 9%, CO: 4 ~
5%, H2: 4-5%, N2: 80%, dew point is -4
It was frozen until it was below 0 ° C and absorbed moisture. Ma
The composition of this gas is N2, C3H 8, C4H10etc
Non-oxidizing gas may be used.
【０００８】ガス絞り部７の上方には強制冷却装置８
を、さらに上方には水冷装置９を、夫々配設していて、
鋼線がシンカーローラ１０とトップローラー１１に導か
れてＡｌ−Ｚｎめっき浴６ａからガス絞り部７を経て強
制冷却装置８そして水冷装置９を通過する過程でＡｌ−
Ｚｎめっき処理されるように形成してある。強制冷却装
置８は、フラスコ状の圧力室８ａと、その上端開口部に
連設された通風筒８ｂからなり、圧力室８ａには中心軸
に沿って鋼線が通過する内筒８ｃを貫設していると共
に、側壁には冷却空気供給管８ｄを接続してある。ま
た、圧力室８ａの上端開口には、内筒８ｃと外周壁との
間に放射状に複数の整流板８ｅが設けられており、圧力
室８ｃから通風筒８ｂへ吹き込まれた２０〜６０℃の温
度の冷却空気流８ｆは、整流板８ｅを通過して線材と平
行に流れるように整流されると共に風速１５〜４０ｍ／
ｓに整えられ、この線材と平行に流れる整流された空気
流により、線材２のＡｌ−Ｚｎめっき層部３の外形を乱
すことなく周囲から均等に冷却して、Ａｌ−Ｚｎめっき
層部３を凝固点近くまで冷却することで、溶融金属の垂
れ落ちを阻止している。冷却空気の温度及び風速は、そ
れらのセンサー及び制御要素を通じて制御・管理可能に
してある。水冷装置９は、線材２に両側から水をかける
ことで、凝固点付近まで温度低下したＡｌ−Ｚｎめっき
層部３を急速に冷却し得るように形成してある。A forced cooling device 8 is provided above the gas throttle 7.
, And further above, a water cooling device 9 is provided,
In the process in which the steel wire is guided by the sinker roller 10 and the top roller 11 and passes from the Al-Zn plating bath 6a through the gas throttle unit 7 to the forced cooling device 8 and the water cooling device 9, Al-
It is formed so as to be subjected to Zn plating. The forced cooling device 8 includes a flask-shaped pressure chamber 8a and a ventilation tube 8b connected to an upper end opening of the pressure chamber 8a. The pressure chamber 8a has an inner cylinder 8c through which a steel wire passes along a central axis. The cooling air supply pipe 8d is connected to the side wall. A plurality of rectifying plates 8e are radially provided between the inner cylinder 8c and the outer peripheral wall at the upper end opening of the pressure chamber 8a, and a temperature of 20 to 60 ° C. blown into the ventilation cylinder 8b from the pressure chamber 8c. The cooling air flow 8f at the temperature is rectified so as to flow in parallel with the wire rod through the rectifying plate 8e, and has a wind speed of 15 to 40 m /
s, and the rectified airflow flowing in parallel with the wire material allows the Al-Zn plating layer portion 3 of the wire material 2 to be uniformly cooled from the surroundings without disturbing the outer shape of the Al-Zn plating layer portion 3. Cooling to near the freezing point prevents molten metal from dripping. The temperature and wind speed of the cooling air can be controlled and managed through their sensors and control elements. The water cooling device 9 is formed so as to rapidly cool the Al-Zn plating layer portion 3 whose temperature has dropped to near the solidification point by applying water to the wire 2 from both sides.
【０００９】次に本発明のＡｌ−Ｚｎ合金めっき線の製
造方法について、前記した図３の製造装置５による図１
のＡｌ−Ｚｎ合金めっき線１の製造例を説明する。ガス
絞り部７内における線材立上り部のＡｌ−Ｚｎめっき浴
６ａ面に無酸化性ガスを供給して、Ａｌ−Ｚｎめっき浴
面の酸化を防止している前記線材立上り部から線材２を
６５ｍ／分の線速で立上げ、然る後に、線材２をガス絞
り部７上方の強制空冷装置８にて、温度が４０℃、風速
が２５ｍ／ｓの冷却空気流８ｆによる空冷雰囲気下で空
冷した後、水冷装置９で水冷することにより、Ａｌ−Ｚ
ｎめっき層部３のＡｌ含有率が１１％で、巾ａが２μｍ
の微細初晶粒３ａによる微細化率が９０％であるめっき
組織のＡｌ−Ｚｎめっき層部３を有するＡｌ−Ｚｎ合金
めっき線１を製造した。Next, a method of manufacturing an Al—Zn alloy plated wire according to the present invention will be described with reference to FIG.
A production example of the Al-Zn alloy plated wire 1 will be described. A non-oxidizing gas is supplied to the surface of the Al-Zn plating bath 6a at the rising portion of the wire in the gas narrowing portion 7 to prevent the oxidation of the surface of the Al-Zn plating bath, and the wire 2 is 65 m / m from the rising portion of the wire. Minute, and then the wire 2 was air-cooled by a forced air-cooling device 8 above the gas throttle unit 7 in an air-cooled atmosphere with a cooling air flow 8f at a temperature of 40 ° C. and a wind speed of 25 m / s. After that, by water cooling with a water cooling device 9, Al-Z
Al content of n plating layer 3 is 11% and width a is 2 μm
An Al—Zn alloy plated wire 1 having an Al—Zn plated layer portion 3 having a plating structure with a refinement ratio of 90% by the fine primary crystal grains 3 a was manufactured.
【００１０】図４には中村式回転曲げ疲労試験機により
行なった試験結果を示しており、前記した図１のＡｌ−
Ｚｎ合金めっき線１を本発明実施品Ａ（図中○で示す）
とし、微細化率が１０％で、大半が粗粒初晶粒からなる
めっき組織のＡｌ−Ｚｎめっき層部を有するＡｌ−Ｚｎ
合金めっき線を比較品Ｂ（図中△で示す）とし、微細化
率が５０％で、粗粒初晶粒と微細初晶粒からなるめっき
組織のＡｌ−Ｚｎめっき層部を有するＡｌ−Ｚｎ合金め
っき線を比較品Ｃ（図中□で示す）として、それぞれの
データーを示している。同図からわかるように、本発明
実施品が全体に疲労寿命が長く耐疲労性に富むのに対し
て、両比較品は、疲労寿命が全体に短く耐疲労性が劣
る。FIG. 4 shows the results of a test performed by a Nakamura-type rotary bending fatigue tester.
The Zn alloy plated wire 1 is a product A of the present invention (shown by a circle in the figure).
Al-Zn having an Al-Zn plating layer portion having a plating structure with a refining rate of 10% and a majority of coarse primary crystals
An alloy-plated wire is referred to as a comparative product B (indicated by △ in the figure), and has a refining rate of 50% and an Al-Zn plating layer having a plating structure composed of coarse primary grains and fine primary grains. Each data is shown with the alloy plating wire as a comparative product C (indicated by □ in the figure). As can be seen from the figure, the product according to the present invention has a long fatigue life as a whole and is rich in fatigue resistance, whereas both comparative products have a short fatigue life as a whole and are inferior in fatigue resistance.
【００１１】図５には前記した本発明実施品Ａと、比較
品Ｂと、比較品ＣのＮＴＴ式耐曲げ疲労試験機による振
動疲労試験結果を示しており、同図からわかるように、
本発明実施品Ａが両比較品Ｂ、Ｃの約２倍弱という耐疲
労性を有するものであった。FIG. 5 shows the results of a vibration fatigue test of the above-described product A of the present invention, a comparative product B, and a comparative product C using an NTT-type bending fatigue resistance tester.
The product A of the present invention had a fatigue resistance of about less than twice that of the comparative products B and C.
【００１２】図６には微細化率が９０％である前記本発
明実施品Ａの加工例を示しており、（Ａ）は本発明実施
品Ａを内径が線径と同径のコイル状に加工した例で、線
の表面にクラックの発生は認められない。（Ｂ）は本発
明実施品Ａを前記コイル状から巻き戻した後、逆巻きし
てコイル状とし、さらに巻き戻した例で、線の表面にク
ラックの発生は認められず、本発明実施品Ａが耐曲げ加
工性に富むものであることが確認された。FIG. 6 shows a processing example of the product A of the present invention having a fineness ratio of 90%. FIG. 6A shows the product A of the present invention in a coil shape having an inner diameter equal to the wire diameter. In the processed example, no crack was observed on the surface of the wire. (B) shows an example in which the product A of the present invention is unwound from the above-mentioned coil shape, then reversely wound into a coil shape, and further unwound, and no crack is observed on the surface of the wire. Was confirmed to be rich in bending workability.
【００１３】図７には微細化率が５０％である前記比較
品Ｃの加工例を示しており、（Ａ）は比較品Ｃを、本発
明実施品と同様に、内径が線径と同径のコイル状に加工
した例で、線の表面にクラックｂが発生していることが
認められた。（Ｂ）は比較品Ｃを、本発明実施品と同様
に、前記コイル状から巻き戻した後、逆巻きしてコイル
状とし、さらに巻き戻した例で、線の表面にクラックｂ
が発生していることが認められ、比較品Ｃが耐曲げ加工
性に劣るものであることが確認された。FIG. 7 shows a processing example of the comparative product C having a fineness ratio of 50%. FIG. 7A shows the comparative product C in which the inner diameter is the same as the wire diameter, similarly to the product of the present invention. In the example processed into a coil shape having a diameter, it was recognized that cracks b occurred on the surface of the wire. (B) shows an example in which the comparative product C is unwound from the coil shape, then reversely wound into a coil shape, and then unwound, similarly to the product of the present invention.
Was observed, and it was confirmed that the comparative product C had poor bending workability.
【００１４】[0014]
【発明の効果】Ａ．請求項１により、Ａｌ−Ｚｎめっき
層部における靭性が高くて、Ａｌ−Ｚｎ−Ｆｅ合金層部
へのクラックの伝播が抑制されて、耐疲労性および耐曲
げ加工性に富み、例えば牡蠣養殖場等における牡蠣の取
り付け部材、或いは、生簀用部材として有用である。 Ｂ．請求項２により、Ａｌ−Ｚｎめっき層部における靭
性が高くて、Ａｌ−Ｚｎ−Ｆｅ合金層部へのクラックの
伝播が抑制されて、耐疲労性および耐曲げ加工性に富む
Ａｌ−Ｚｎ合金めっき線を効率良く生産することができ
る。A. Effects of the Invention According to claim 1, the toughness of the Al—Zn plating layer portion is high, the propagation of cracks to the Al—Zn—Fe alloy layer portion is suppressed, and the fatigue resistance and bending resistance are high. It is useful as a member for attaching oysters or a member for fish cages. B. According to claim 2, Al-Zn alloy plating having high toughness in the Al-Zn plating layer, suppressing propagation of cracks to the Al-Zn-Fe alloy layer, and having excellent fatigue resistance and bending resistance. Wire can be produced efficiently.
【図１】 本発明のＡｌ−Ｚｎ合金めっき線における実
施の１形態を例示しているＡｌ−Ｚｎめっき層部の拡大
断面図。FIG. 1 is an enlarged cross-sectional view of an Al—Zn plating layer portion illustrating one embodiment of an Al—Zn alloy plated wire of the present invention.
【図２】 同めっき層部における微細初晶粒の部分拡大
断面図。FIG. 2 is a partially enlarged sectional view of a fine primary crystal grain in the plating layer portion.
【図３】 本発明のＡｌ−Ｚｎ合金めっき線の製造方法
を実施するのに採用した製造装置を示す概略図。FIG. 3 is a schematic view showing a manufacturing apparatus employed to carry out the method for manufacturing an Al—Zn alloy plated wire of the present invention.
【図４】 図１の態様のＡｌ−Ｚｎ合金めっき線と比較
品の回転曲げ疲労試験を示すデーター。4 is data showing a rotational bending fatigue test of the Al—Zn alloy plated wire of the embodiment of FIG. 1 and a comparative product.
【図５】 図１の態様のＡｌ−Ｚｎ合金めっき線と比較
品の振動疲労試験を示すデーター。5 is data showing vibration fatigue tests of the Al—Zn alloy plated wire of the embodiment of FIG. 1 and a comparative product.
【図６】 図１の態様のＡｌ−Ｚｎ合金めっき線におけ
る加工例を示し、（Ａ）はコイル状に加工した部分拡大
側面図、（Ｂ）はコイル状から巻き戻した後に逆巻きし
てさらに巻き戻し加工した部分拡大側面図。6A and 6B show examples of processing in the Al—Zn alloy plated wire of the embodiment of FIG. 1, in which FIG. 6A is a partially enlarged side view in which the wire is processed into a coil shape, and FIG. The partially enlarged side view which carried out the rewinding process.
【図７】 従来のＡｌ−Ｚｎ合金めっき線における加工
例を示し、（Ａ）はコイル状に加工した部分拡大側面
図、（Ｂ）はコイル状から巻き戻した後に逆巻きしてさ
らに巻き戻し加工した部分拡大側面図、（Ｃ）はクラッ
ク部分の部分拡大断面図。7A and 7B show an example of processing on a conventional Al—Zn alloy plated wire, in which FIG. 7A is a partially enlarged side view in which the wire is processed into a coil shape, and FIG. Part (C) is a partially enlarged sectional view of a crack portion.
１ Ａｌ−Ｚｎ合金めっき線 ２ 線材 ３ Ａｌ−Ｚｎめっき層部 ３ａ 微細初晶粒 ａ 微細初晶粒の巾 ｂ クラック ４ Ａｌ−Ｚｎ−Ｆｅ合金層部 ５ 製造装置 ６ Ａｌ−Ｚｎめっき槽 ６ａ Ａｌ−Ｚｎめっき浴 ７ ガス絞り部 ８ 強制冷却装置 ８ａ 圧力室 ８ｂ 通風筒 ８ｃ 内筒 ８ｄ 加圧空気供給管 ８ｅ 整流板 ８ｆ 冷却空気流 ９ 水冷装置 １０ シンカーローラ １１ トップローラー DESCRIPTION OF SYMBOLS 1 Al-Zn alloy plating wire 2 Wire rod 3 Al-Zn plating layer part 3a Fine primary crystal grain a Width of fine primary crystal grain b Crack 4 Al-Zn-Fe alloy layer part 5 Manufacturing apparatus 6 Al-Zn plating tank 6a Al -Zn plating bath 7 Gas throttle unit 8 Forced cooling device 8a Pressure chamber 8b Ventilation cylinder 8c Inner cylinder 8d Pressurized air supply pipe 8e Rectifier plate 8f Cooling air flow 9 Water cooling device 10 Sinker roller 11 Top roller
Claims (2)
〜２０％で、このＡｌ−Ｚｎめっき層部のめっき組織
は、初晶の巾が３μｍ以下の微細初晶粒による微細化率
を８０％以上にしてあることを特徴とするＡｌ−Ｚｎ合
金めっき線。1. An Al—Zn plating layer having an Al content of 8
Al-Zn alloy plating characterized in that the plating structure of the Al-Zn plating layer portion is 80% or more by a fine primary crystal having a primary crystal width of 3 µm or less. line.
ｌ−Ｚｎめっき浴面に無酸化性ガスを供給して浴面の酸
化を防止している前記線材立上り部から線材を立上げ、
然る後に、線材を前記ガス絞り部上方の強制空冷装置に
より風速が１５〜４０ｍ／ｓの空冷雰囲気下で空冷した
後、水冷することで、初晶の巾が３μｍ以下の微細初晶
粒による微細化率を８０％以上にしてあるめっき組織か
らなるＡｌ含有率８〜２０％のＡｌ−Ｚｎめっき層部を
有するＡｌ−Ｚｎ合金めっき線を製造するようにしたこ
とを特徴とするＡｌ−Ｚｎ合金めっき線の製造方法。2. A of a wire rising portion in a gas throttle portion.
Starting a wire from the rising portion of the wire, which supplies an non-oxidizing gas to the l-Zn plating bath surface to prevent oxidation of the bath surface,
After that, the wire rod is air-cooled in an air-cooled atmosphere having a wind velocity of 15 to 40 m / s by a forced air-cooling device above the gas throttle unit, and then water-cooled, thereby forming fine primary crystal grains having a primary crystal width of 3 μm or less. An Al-Zn alloy-coated wire having an Al-Zn plating layer portion having an Al content of 8 to 20% and an Al-Zn plating layer portion having an Al content of 8 to 20% made of a plating structure having a refinement ratio of 80% or more. Manufacturing method of alloy plated wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001031083A JP2002235159A (en) | 2001-02-07 | 2001-02-07 | Al-Zn ALLOY PLATED WIRE AND PRODUCTION METHOD THEREFOR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001031083A JP2002235159A (en) | 2001-02-07 | 2001-02-07 | Al-Zn ALLOY PLATED WIRE AND PRODUCTION METHOD THEREFOR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002235159A true JP2002235159A (en) | 2002-08-23 |
Family
ID=18895213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001031083A Pending JP2002235159A (en) | 2001-02-07 | 2001-02-07 | Al-Zn ALLOY PLATED WIRE AND PRODUCTION METHOD THEREFOR |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002235159A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010150537A1 (en) * | 2009-06-25 | 2010-12-29 | 新日本製鐵株式会社 | HIGH-STRENGTH Zn-Al-PLATED STEEL WIRE FOR BRIDGES WHICH HAS EXCELLENT CORROSION RESISTANCE AND FATIGUE PROPERTIES, AND PROCESS FOR PRODUCTION THEREOF |
| WO2011001640A1 (en) * | 2009-06-29 | 2011-01-06 | 新日本製鐵株式会社 | Zinc-aluminum galvanized iron wire and manufacturing method therefor |
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| JP2000045056A (en) * | 1998-07-28 | 2000-02-15 | Hokkai Koki Kk | Cooling device for hot dip zinc-aluminum alloy plated wire |
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| JPS63447A (en) * | 1986-06-18 | 1988-01-05 | Seiko Instr & Electronics Ltd | Hot-dipped steel material with high damping capacity and its manufacture |
| JPH11323524A (en) * | 1998-03-10 | 1999-11-26 | Kokoku Kousensaku Kk | Hot dip coated metallic wire and its production |
| JP2000045056A (en) * | 1998-07-28 | 2000-02-15 | Hokkai Koki Kk | Cooling device for hot dip zinc-aluminum alloy plated wire |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010150537A1 (en) * | 2009-06-25 | 2010-12-29 | 新日本製鐵株式会社 | HIGH-STRENGTH Zn-Al-PLATED STEEL WIRE FOR BRIDGES WHICH HAS EXCELLENT CORROSION RESISTANCE AND FATIGUE PROPERTIES, AND PROCESS FOR PRODUCTION THEREOF |
| JP4782246B2 (en) * | 2009-06-25 | 2011-09-28 | 新日本製鐵株式会社 | High-strength Zn-Al plated steel wire for bridges with excellent corrosion resistance and fatigue characteristics and method for producing the same |
| US9243315B2 (en) | 2009-06-25 | 2016-01-26 | Nippon Steel & Sumitomo Metal Corporation | High-strength Zn—Al coated steel wire for bridges with excellent corrosion resistance and fatigue properties and method for manufacturing the same |
| WO2011001640A1 (en) * | 2009-06-29 | 2011-01-06 | 新日本製鐵株式会社 | Zinc-aluminum galvanized iron wire and manufacturing method therefor |
| CN102084018A (en) * | 2009-06-29 | 2011-06-01 | 新日本制铁株式会社 | Zinc-aluminum galvanized iron wire and manufacturing method therefor |
| JP4782247B2 (en) * | 2009-06-29 | 2011-09-28 | 新日本製鐵株式会社 | Zn-Al plated iron wire and method for producing the same |
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