JPH081369A - Low spatter wire for co2 gas shielded arc welding and its manufacture - Google Patents
Low spatter wire for co2 gas shielded arc welding and its manufactureInfo
- Publication number
- JPH081369A JPH081369A JP13069394A JP13069394A JPH081369A JP H081369 A JPH081369 A JP H081369A JP 13069394 A JP13069394 A JP 13069394A JP 13069394 A JP13069394 A JP 13069394A JP H081369 A JPH081369 A JP H081369A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- alkali metal
- arc welding
- steel wire
- shielded arc
- 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
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、アーク安定性に優れ、
スパッタの低減に効果のある炭酸ガスシールドアーク溶
接用ワイヤおよびその製造方法に関するものである。BACKGROUND OF THE INVENTION The present invention has excellent arc stability,
The present invention relates to a carbon dioxide shielded arc welding wire effective in reducing spatter and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】送給性の向上、スパッタの低減を目的と
して鋼ワイヤ表層部に粒界酸化層を形成させ、その粒界
酸化物を起点として横割れを発生させ、その横割れをオ
イルポケットとしてワイヤの送給性を向上させるととも
に、粒界酸化により表層部に富化された酸素の作用によ
りアークの安定化を図ったワイヤに関する技術は、例え
ば特公昭６３−２１５９５号公報を始め多数提案されて
いる。2. Description of the Related Art A grain boundary oxide layer is formed on the surface portion of a steel wire for the purpose of improving the feedability and reducing the spatter, and lateral cracks are generated starting from the grain boundary oxide. As a technique relating to a wire for improving the feedability of the wire and stabilizing the arc by the action of oxygen enriched in the surface layer portion by the grain boundary oxidation, many proposals are made, for example, in Japanese Examined Patent Publication No. 63-21595. Has been done.
【０００３】この種ワイヤの製造においては、熱処理前
に炭酸塩を塗布することが、焼鈍時に触媒作用により粒
界酸化を促進するのに効果的な技術であることは特公平
３−６４２３９号公報などに開示されている。また特開
昭６２−１６９００号公報では、水酸化物の塗布が同様
に粒界酸化に効果的であることが示されている。In the production of this type of wire, it is known that applying a carbonate before heat treatment is an effective technique for promoting grain boundary oxidation by a catalytic action during annealing. Etc. are disclosed. Further, Japanese Patent Application Laid-Open No. 62-16900 shows that application of hydroxide is also effective for grain boundary oxidation.
【０００４】また、アーク安定化にアルカリ金属が優れ
ていること、およびアルカリ金属の沸点が低いため溶鋼
中に添加することが困難であることから、特開昭６１−
１２６９９５号公報、特開昭６３−１０８９９６号公
報、特開昭６３−１４９０９３号公報などに示されてい
るように表面あるいは表面の横割れに付着させる方法が
考えられている。Further, since the alkali metal is excellent in arc stabilization and it is difficult to add the alkali metal to the molten steel due to its low boiling point, JP-A-61-
As disclosed in JP-A-126995, JP-A-63-108996 and JP-A-63-149093, a method of adhering to the surface or lateral cracks on the surface has been considered.
【０００５】[0005]
【発明が解決しようとする課題】粒界酸化によってワイ
ヤ表層部に酸素を富化させ、低スパッタ化を計る方法で
は、ある程度の効果は得られるが、十分ではない。一方
表面にアルカリ金属を塗布する方法ではアルカリ金属を
ワイヤ表面に均一に付着させることはできても、ハンド
リングなどのさいはげ落ちやすく、使用時まで安定に維
持することは困難である。The method of enriching oxygen in the surface layer of the wire by grain boundary oxidation to reduce the spatter yields some effect, but is not sufficient. On the other hand, in the method of applying an alkali metal on the surface, the alkali metal can be evenly adhered to the wire surface, but it is easily peeled off during handling and the like, and it is difficult to maintain it stable until use.
【０００６】また特開昭６３−１０８９９６号公報、特
開昭６３−１４９０９３号公報に開示されているよう
に、粒界酸化による横溝にカリを付着させる方法には次
のような問題がある。すなわち、粒界酸化を発生させて
もそのなかで伸線により亀裂に進展するのはごく一部で
ある。もし全面的に粒界に亀裂を発生するような深い粒
界酸化を行えば、メッキの密着性に問題が生じる。メッ
キの密着性に問題が生じない程度の横割れであれば、そ
の横割れに存在するカリ分の間隔は、近年のようにイン
バーター電源のパルスによる微細な溶滴移行を行わせる
には粗すぎる。またカリは吸湿性が強く、水分が少しで
も存在すると吸湿してワイヤ表面のＣｕメッキが錆びて
変色し、商品価値を低下させるだけでなく、ワイヤ送給
性を害し、かえってアークの不安定化を招くことになる
という重大な問題がある。Further, as disclosed in JP-A-63-108996 and JP-A-63-149093, the method of attaching potassium to the lateral groove by grain boundary oxidation has the following problems. That is, even if the grain boundary oxidation is generated, only a small part of the grain boundary oxidation progresses to cracks by wire drawing. If deep grain boundary oxidation that causes cracks at grain boundaries on the entire surface is performed, problems occur with the adhesion of the plating. If it is a lateral crack that does not cause a problem in plating adhesion, the interval of the potassium component present in the lateral crack is too coarse to perform fine droplet transfer by the pulse of the inverter power supply as in recent years. . Potassium has strong hygroscopicity, and if any moisture is present, it absorbs moisture and the Cu plating on the wire surface rusts and discolors, not only reducing the commercial value but also deteriorating the wire feeding ability and conversely destabilizing the arc. There is a serious problem that will lead to.
【０００７】本発明は、上記問題点を解決し、低スパッ
タ化を計ることを可能とする炭酸ガスシールドアーク溶
接用ワイヤおよびその製造方法を提供することを目的と
するものである。なお、スパッタの発生量は０．７０ｇ
／分以下を目標とした。An object of the present invention is to provide a carbon dioxide shielded arc welding wire and a method for producing the same, which can solve the above problems and reduce spatter. The amount of spatter generated is 0.70 g
The target was less than / minute.
【０００８】[0008]
【課題を解決するための手段】ワイヤ表層部に酸素を富
化すると同時に、アーク安定性に優れたアルカリ金属を
鋼中に均一に分布させることが最も効果的であるが、こ
れまでその手段が存在しなかった。本発明は、上記問題
点を解決するために、鋭意研究を進めた結果、焼鈍雰囲
気の制御によって生成可能である内部酸化部にアルカリ
金属を表面より拡散させる方法を開発し、表層部に安定
かつ均一にアルカリ金属を含有させることが可能とな
り、低スパッタ化を達成したものである。[Means for Solving the Problems] It is most effective to enrich the surface layer of the wire with oxygen and at the same time evenly distribute an alkali metal having excellent arc stability in the steel. Did not exist. The present invention, in order to solve the above problems, as a result of intensive studies, a method of diffusing an alkali metal from the surface into an internal oxidized portion that can be generated by controlling an annealing atmosphere was developed, and a stable surface layer portion was obtained. It is possible to uniformly contain the alkali metal and to achieve low sputtering.
【０００９】すなわち本発明は、鋼ワイヤ表層部に内部
酸化物を有し、かつワイヤ全体に対して１ｐｐｍ以上の
アルカリ金属を該内部酸化物中に含有することを特徴と
する炭酸ガスシールドアーク溶接用低スパッタワイヤで
ある。また本発明は、鋼ワイヤの表面にアルカリ金属よ
りなるシュウ酸塩、クエン酸塩、ハロゲン化合物、燐酸
塩を塗布してから窒素ガス雰囲気中で焼鈍し、銅メッ
キ、伸線加工を施すことを特徴とする炭酸ガスシールド
アーク溶接用低スパッタワイヤの製造方法であり、また
本発明は、鋼ワイヤの表面に残留する潤滑剤を除去した
後に、又は熱間伸線した後ショットブラスト処理し冷間
伸線した後の鋼ワイヤの表面に若しくは冷間伸線した後
ショットブラスト処理した鋼ワイヤの表面に、又は冷間
伸線した後ブラシ研摩加工処理若しくは酸洗処理した鋼
ワイヤの表面にアルカリ金属よりなるシュウ酸塩、クエ
ン酸塩、ハロゲン化合物、燐酸塩のうち１種以上を塗布
してから窒素ガス雰囲気中で焼鈍し、銅メッキ、伸線加
工を施すことを特徴とする炭酸ガスシールドアーク溶接
用低スパッタワイヤの製造方法である。That is, according to the present invention, carbon dioxide shielded arc welding is characterized in that the surface layer of the steel wire has an internal oxide and the internal oxide contains 1 ppm or more of an alkali metal with respect to the entire wire. Low spatter wire for use. Further, the present invention is to apply an oxalate, a citrate, a halogen compound, and a phosphate made of an alkali metal to the surface of a steel wire, then anneal it in a nitrogen gas atmosphere, perform copper plating, and perform wire drawing. A method for producing a low-sputtering wire for carbon dioxide gas shielded arc welding, which is characterized by the present invention, wherein the present invention is a shot blasting treatment after removing the lubricant remaining on the surface of the steel wire or after hot drawing Alkali metal on the surface of steel wire after drawing, or on the surface of steel wire that has been shot-blasted after cold drawing, or on the surface of steel wire that has been brush-polished or pickled after cold drawing Characterized in that at least one of oxalate, citrate, halogen compound and phosphate is applied, followed by annealing in a nitrogen gas atmosphere, copper plating and wire drawing. A method for producing a low sputtering wire acid gas shielded arc welding.
【００１０】[0010]
【作用】本発明によれば、表層部の内部酸化物中にアル
カリ金属を拡散させることによって、アルカリ金属を表
層部に均一かつ安定に含有させることができ、溶接中の
アークを安定に保つことによって低スパッタ化を達成す
ることができる。アルカリ金属の量としては、ワイヤ全
体に対して１ｐｐｍ以上必要である。１ｐｐｍ未満では
アークを安定させる効果がなく、目標とする低スパッタ
化が達成されない。According to the present invention, the alkali metal can be uniformly and stably contained in the surface layer by diffusing the alkali metal into the internal oxide of the surface layer, and the arc during welding can be kept stable. Thus, low spatter can be achieved. The amount of alkali metal needs to be 1 ppm or more with respect to the entire wire. If it is less than 1 ppm, there is no effect of stabilizing the arc, and the target low sputtering cannot be achieved.
【００１１】図１にワイヤ全体に対するアルカリ金属含
有量とスパッタ発生量の関係を示す。アルカリ金属含有
量１ｐｐｍ以上でスパッタ量０．７０ｇ／分以下を達成
することができる。焼鈍前にワイヤ表面に塗布し内部酸
化物中へ拡散させるアルカリ金属源としては、アルカリ
金属のシュウ酸塩、クエン酸塩、酒石酸塩、リン酸化合
物、ハロゲン化合物が効果的である。FIG. 1 shows the relationship between the content of alkali metal and the amount of spatter generated for the entire wire. A sputtering amount of 0.70 g / min or less can be achieved with an alkali metal content of 1 ppm or more. Alkali metal oxalates, citrates, tartrates, phosphoric acid compounds, and halogen compounds are effective as alkali metal sources that are applied to the wire surface before annealing and diffused into the internal oxide.
【００１２】これらの化合物は、炭酸ガスシールドアー
ク溶接用ワイヤの製造工程において通常のベル焼鈍に用
いられるような弱酸化性の高温雰囲気中で不安定であ
り、分解してアルカリ金属が酸素と同じように鋼中に拡
散し、Ｆｅよりも酸化傾向が強いため、内部酸化物の１
構成元素として存在すると考えられる。ところで、一般
に鋼ワイヤ表面には伸線潤滑剤や油脂が残留している場
合が多く、この場合それらによりワイヤ表面が保護され
た状態となっているため、アルカリ金属を含む化合物が
安定的に表面に塗布されない場合がある。特に連続焼鈍
のような５分程度までの短時間の熱処理では、ワイヤ全
長にわたって安定的にアルカリ金属を１ｐｐｍ以上保持
させられない場合もある。[0012] These compounds are unstable in a weakly oxidizing high-temperature atmosphere as used in ordinary bell annealing in the process of manufacturing a carbon dioxide shielded arc welding wire, and decompose to generate the same alkali metal as oxygen. As it diffuses in steel and has a stronger oxidation tendency than Fe,
It is considered to exist as a constituent element. By the way, in general, wire drawing lubricants and oils and fats often remain on the surface of steel wires, and in this case, the wire surface is protected by these, so that the compound containing alkali metal is stable on the surface. May not be applied to. In particular, in a short-time heat treatment of about 5 minutes such as continuous annealing, it may not be possible to stably hold 1 ppm or more of alkali metal over the entire length of the wire.
【００１３】すなわち、連続焼鈍のような短時間の熱処
理に対しても安定的にアルカリ金属を１ｐｐｍ以上保持
させるためには、鋼ワイヤ表面に残存する伸線潤滑剤や
油脂を予め除去しておくことが望ましい。除去方法とし
ては、溶剤による脱脂、アルカリ洗浄などがあげられる
が、潤滑剤の残量としてはワイヤ１０ｋｇ当たり１ｇ以
下であることが望ましい。That is, in order to stably retain 1 ppm or more of the alkali metal even in a short-time heat treatment such as continuous annealing, the wire drawing lubricant and oil remaining on the surface of the steel wire are removed in advance. Is desirable. Examples of the removing method include degreasing with a solvent and alkali cleaning, but the remaining amount of the lubricant is preferably 1 g or less per 10 kg of the wire.
【００１４】また、さらにアルカリ金属を効果的に残留
させるためには、ワイヤ表面の伸線潤滑剤や油脂を除去
するだけでなく、熱間伸線した後ショットブラスト処理
し冷間伸線し若しくは冷間伸線した後ショットブラスト
処理し、又は冷間伸線した後ブラシ研摩加工処理若しく
は酸洗処理し、鋼ワイヤの表面を活性化するとともにそ
の表面に発生した凹凸や擦り傷による実表面積の増大を
はかることが望ましい。Further, in order to effectively retain the alkali metal, not only the wire drawing lubricant and oils and fats on the surface of the wire are removed, but also hot drawing is followed by shot blasting and cold drawing or Cold wire drawing followed by shot blasting, or cold wire drawing followed by brush polishing or pickling to activate the surface of the steel wire and increase the actual surface area due to unevenness or scratches on the surface. It is desirable to measure
【００１５】例えば、ブラシ研摩加工処理について言え
ば、＃５００程度以下のワイヤブラシやアラミド繊維の
表面に研磨砥粒を埋め込んだブラシにより研磨加工して
表面を荒らした鋼ワイヤを素線として用い、その鋼ワイ
ヤにアルカリ金属を含む化合物を塗布して焼鈍すれば鋼
ワイヤ表層部の内部酸化物にアルカリ金属をより多く含
有させることができる。For example, in terms of brush polishing processing, a steel wire whose surface is roughened by polishing with a wire brush of about # 500 or less or a brush in which polishing abrasive grains are embedded in the surface of aramid fiber is used as an element wire, If the compound containing an alkali metal is applied to the steel wire and annealed, a larger amount of the alkali metal can be contained in the internal oxide of the surface layer of the steel wire.
【００１６】すなわち、これはワイヤ表面に残留する潤
滑剤や油脂を除去する効果に加え、さらに表面が研磨さ
れることでワイヤ表面の酸化皮膜を破壊し表面を活性化
する効果、さらには表面に加工を施すことで、ワイヤ表
面の増加やワイヤ表面に圧縮の残留応力が生じることな
どが相俟ってワイヤ表面でのアルカリ金属の拡散が促進
されると考えられる。そのため、短時間焼鈍である連続
焼鈍プロセスにも本発明は適用可能である。That is, in addition to the effect of removing the lubricants and oils remaining on the wire surface, the effect of destroying the oxide film on the wire surface by activating the surface and further activating the surface, and further It is considered that the processing accelerates the diffusion of the alkali metal on the wire surface due to the increase of the wire surface and the generation of residual stress of compression on the wire surface. Therefore, the present invention can be applied to a continuous annealing process which is a short time annealing.
【００１７】[0017]
（実施例１）表１に示す組成の線径５．５ｍｍの熱延鋼
線を冷間伸線によって線径２．０ｍｍとした鋼線を素材
として用いた。表２に示した塗布剤の液中に浸漬し、乾
燥した後、７２０℃×３時間Ｎ2 雰囲気中で焼鈍した。
酸化を起こさせるために露点０℃に調整したＮ2 ガスを
毎分６０ｌ送給した。(Example 1) A hot-rolled steel wire having the composition shown in Table 1 and a wire diameter of 5.5 mm was made into a wire having a wire diameter of 2.0 mm by cold drawing. After being dipped in the liquid of the coating agent shown in Table 2 and dried, it was annealed in a N 2 atmosphere at 720 ° C. for 3 hours.
60 l / min of N 2 gas adjusted to a dew point of 0 ° C. to cause oxidation was fed.
【００１８】[0018]
【表１】 [Table 1]
【００１９】[0019]
【表２】 [Table 2]
【００２０】熱処理後塩酸１０％の４０℃水溶液中に２
分間浸漬して酸洗したものに厚さ１μm のＣｕメッキを
施し、仕上げ線径１．２ｍｍへ伸線してスパッタ発生量
の評価試験に供した。溶接条件は、１００％ＣＯ2 を毎
分２０ｌシールドガスとして流し、電流：２７０Ａ、電
圧：２８Ｖ、溶接速度：３０ｃｍ／分、溶接時間は２分
とした。スパッタは全数補集してスパッタ量を計測し
た。After the heat treatment, 2 in a 40% aqueous solution of hydrochloric acid 10%
A 1-μm-thick Cu plating was applied to the one that had been dipped for a minute and pickled, and drawn to a finished wire diameter of 1.2 mm, and subjected to an evaluation test of the amount of spatter generation. The welding conditions were as follows: 100% CO 2 was passed as a shield gas of 20 l / min, current: 270 A, voltage: 28 V, welding speed: 30 cm / min, and welding time was 2 minutes. All spatters were collected and the amount of spatters was measured.
【００２１】スパッタ発生量の目標値は０．７０ｇ／分
以下に設定した。そして特に０．５０ｇ／分以下を良
（○）、０．５０ｇ／分越え０．７０ｇ／分以下を可
（△）、０．７０ｇ／分越えを不可（×）と評価した。
表２にその結果を併せて示す。表２からわかるように、
熱処理前の塗布剤としてはシュウ酸塩、クエン酸塩、酒
石酸塩、ハロゲン化合物、リン酸塩はスパッタ低減に大
きな効果があり、一方炭酸塩、水酸化物を塗布したもの
および無塗布のものはワイヤの酸素付加量が前記塗布剤
を塗布したものと同程度であるにもかかわらず効果が少
なかった。なおシュウ酸塩は塗布剤として効果があるも
のの毒物であるので使用は避けた方が良い。The target value of the spatter generation amount was set to 0.70 g / min or less. Then, in particular, 0.50 g / min or less was evaluated as good (◯), 0.50 g / min or more and 0.70 g / min or less was acceptable (Δ), and 0.70 g / min or more was not acceptable (x).
The results are also shown in Table 2. As you can see from Table 2,
As the coating agent before heat treatment, oxalate, citrate, tartrate, halogen compounds and phosphates have a great effect on reducing spatter, while those coated with carbonate or hydroxide and those without The effect was small even though the amount of oxygen added to the wire was about the same as when the coating agent was applied. Although oxalate is effective as a coating agent, it should be avoided as it is a poison.
【００２２】本発明に用いた焼鈍前の塗布剤は、内部酸
化層生成にも効果があり、塗布する塗布剤によってはＣ
ｕメッキ後の伸線によって表面に割れを効果的に生じさ
せることができる。 （実施例２）表１における No.６の組成の線径５．５ｍ
ｍの熱延鋼線をステアリン酸ナトリウムを主体とする伸
線潤滑剤を用いて冷間伸線によって線径２．０ｍｍとし
た鋼線を素材として用いた。潤滑剤の除去は表３に示す
ように伸線ままのものと、アルカリ脱脂およびトリクレ
ン脱脂を施したものを用いた。これらワイヤをクエン酸
カリ１０％水溶液中に浸漬乾燥した後、バッチ焼鈍の場
合は７２０℃×３時間Ｎ2 雰囲気中で焼鈍し、酸化を起
こさせるために露点０℃に調整したＮ2 ガスを毎分６０
ｌ送給した。連続焼鈍では８００℃×２分間Ｎ2 雰囲気
中で焼鈍し、酸化を起こさせるために露点０℃に調整し
た。The coating agent before annealing used in the present invention is also effective for forming an internal oxide layer, and depending on the coating agent to be coated, C
The wire drawing after u plating can effectively cause cracks on the surface. (Example 2) The wire diameter of the composition of No. 6 in Table 1 was 5.5 m
A hot-rolled steel wire having a diameter of 2.0 mm was drawn by cold drawing using a wire drawing lubricant mainly composed of sodium stearate. As shown in Table 3, the lubricants were removed as they were as drawn, and those subjected to alkali degreasing and trichlene degreasing. After dipping and drying these wires in an aqueous 10% potassium citrate solution, in the case of batch annealing, the wires were annealed in a N 2 atmosphere at 720 ° C. for 3 hours, and N 2 gas adjusted to a dew point of 0 ° C. to cause oxidation was used. 60 per minute
I sent it. In continuous annealing, annealing was performed in a N 2 atmosphere at 800 ° C. for 2 minutes, and the dew point was adjusted to 0 ° C. to cause oxidation.
【００２３】[0023]
【表３】 [Table 3]
【００２４】熱処理後塩酸１０％の４０℃水溶液中に２
分間浸漬して酸洗したものに厚さ１μm のＣｕメッキを
施し、仕上げ線径１．２ｍｍへ伸線してスパッタ発生量
の評価試験に供した。溶接条件は、１００％ＣＯ2 を毎
分２０ｌシールドガスとして流し、電流：２７０Ａ、電
圧：２８Ｖ、溶接速度：３０ｃｍ／分、溶接時間は２分
とした。スパッタは全数補集してスパッタ量を計測し
た。After the heat treatment, 2 in an aqueous solution of 10% hydrochloric acid at 40 ° C.
A 1-μm-thick Cu plating was applied to the one that had been dipped for a minute and pickled, and drawn to a finished wire diameter of 1.2 mm, and subjected to an evaluation test of the amount of spatter generation. The welding conditions were as follows: 100% CO 2 was passed as a shield gas of 20 l / min, current: 270 A, voltage: 28 V, welding speed: 30 cm / min, and welding time was 2 minutes. All spatters were collected and the amount of spatters was measured.
【００２５】スパッタ発生量の目標値は０．７０ｇ／分
以下に設定した。そして特に０．５０ｇ／分以下を良
（○）、０．５０ｇ／分越え０．７０ｇ／分以下を可
（△）、０．７０ｇ／分越えを不可（×）と評価した。
表３にその結果を併せて示す。表３からわかるように、
クエン酸カリを塗布したものではいずれもスパッタ発生
量の目標値０．７０ｇ／分以下を満足するが、さらに脱
脂処理したものでは連続焼鈍のような短時間の熱処理で
も十分低いスパッタが得られている。The target value of the spatter generation amount was set to 0.70 g / min or less. Then, in particular, 0.50 g / min or less was evaluated as good (◯), 0.50 g / min or more and 0.70 g / min or less was acceptable (Δ), and 0.70 g / min or more was not acceptable (x).
The results are also shown in Table 3. As can be seen from Table 3,
All of the products coated with potassium citrate satisfy the target value of the spatter generation amount of 0.70 g / min or less, but the products subjected to the degreasing treatment can obtain sufficiently low spatter even in a short-time heat treatment such as continuous annealing. There is.
【００２６】（実施例３）表１に示す組成の線径５．５
ｍｍの熱延鋼線を冷間伸線によって線径２．０ｍｍとし
た鋼線を素材として用いた。この鋼線に研削剤として表
４に示したグリッドを用い、エアー式のショットブラス
ト設備で表面を粗面化後１０％のクエン酸カリ水溶液中
に浸漬乾燥した後、８００℃×１０分間Ｎ2 雰囲気中で
焼鈍し、酸化を起こさせるために露点０℃に調整したＮ
2 ガスを毎分６０ｌ送給した。連続焼鈍では８００℃×
２分間Ｎ2 雰囲気中で焼鈍し、酸化を起こさせるために
露点０℃に調整した。(Example 3) The wire diameter of the composition shown in Table 1 was 5.5.
A hot-rolled steel wire having a diameter of 2.0 mm was obtained by cold drawing of a hot-rolled steel wire having a diameter of mm. Using a grid shown in Table 4 as an abrasive to this steel wire, the surface was roughened by an air-type shot blasting equipment, then immersed in a 10% potassium citrate aqueous solution and dried, and then N 2 at 800 ° C. for 10 minutes. N annealed in the atmosphere and adjusted to a dew point of 0 ° C to cause oxidation
2 gas was delivered at 60 liters per minute. 800 ° C for continuous annealing
It was annealed in N 2 atmosphere for 2 minutes and adjusted to a dew point of 0 ° C. to cause oxidation.
【００２７】[0027]
【表４】 [Table 4]
【００２８】また、上と同じ組成の線径５．５ｍｍの熱
延鋼線に表５に示したグリッドを用い、エアー式のショ
ットブラスト設備で表面を粗面化後、冷間伸線によって
線径２．０ｍｍとし、この鋼線を１０％のクエン酸カリ
水溶液中に浸漬乾燥した後、上と同じ条件で焼鈍した。Further, the grid shown in Table 5 was used for a hot rolled steel wire having the same composition as the above and a wire diameter of 5.5 mm, and after roughening the surface with an air type shot blasting equipment, the wire was drawn by cold drawing. The steel wire having a diameter of 2.0 mm was immersed and dried in a 10% potassium citrate aqueous solution, and then annealed under the same conditions as above.
【００２９】[0029]
【表５】 [Table 5]
【００３０】上記それぞれの熱処理後の鋼線を、塩酸１
０％の４０℃水溶液中に２分間浸漬して酸洗したものに
厚さ１μm のＣｕメッキを施し、仕上げ線径１．２ｍｍ
へ伸線してスパッタ発生量の評価試験に供した。溶接条
件は、１００％ＣＯ2 を毎分２０ｌシールドガスとして
流し、電流：２７０Ａ、電圧：２８Ｖ、溶接速度：３０
ｃｍ／分、溶接時間は２分とした。スパッタは全数補集
してスパッタ量を計測した。The steel wire after each of the above heat treatments was treated with hydrochloric acid 1
Dipped in 0% 40 ° C aqueous solution for 2 minutes and pickled, and plated with Cu of 1 μm thickness, finishing wire diameter 1.2mm
The wire was drawn to and subjected to an evaluation test of the amount of spatter generated. Welding conditions are as follows: 100% CO 2 is passed as a 20 l shield gas per minute, current: 270 A, voltage: 28 V, welding speed: 30
cm / min, welding time was 2 minutes. All spatters were collected and the amount of spatters was measured.
【００３１】スパッタ発生量の目標値は０．７０ｇ／分
以下に設定した。そして特に０．５０ｇ／分以下を良
（○）、０．５０ｇ／分越え０．７０ｇ／分以下を可
（△）、０．７０ｇ／分越えを不可（×）と評価した。
表４および表５にそれぞれの結果を併せて示す。これら
の表からわかるように、冷間加工後若しくは冷間加工前
にショットブラストを施すことによって、短時間の熱処
理でもアルカリ金属含有量１ｐｐｍ以上を確保できスパ
ッタ発生量を低減させることができる。The target value of the spatter generation amount was set to 0.70 g / min or less. Then, in particular, 0.50 g / min or less was evaluated as good (◯), 0.50 g / min or more and 0.70 g / min or less was acceptable (Δ), and 0.70 g / min or more was not acceptable (x).
Table 4 and Table 5 also show the respective results. As can be seen from these tables, by performing shot blasting after cold working or before cold working, the alkali metal content of 1 ppm or more can be secured and the amount of spatter generation can be reduced even by heat treatment for a short time.
【００３２】この熱処理条件は連続化が可能であり、大
きなコスト削減の可能性を持つものである。 （実施例４）表１における No.６の組成の線径５．５ｍ
ｍの熱延鋼線をステアリン酸ナトリウムを主体とする伸
線潤滑剤を用いて冷間伸線によって線径２．０ｍｍとし
た鋼線を素材として用いた。ワイヤへの前処理としては
表６に示すように伸線ままのものと、ワイヤブラシおよ
びアラミド系繊維に研磨粒を埋め込んだブラシによる研
磨を行った。次いで、これらワイヤをクエン酸カリ１０
％水溶液中に浸漬乾燥した後、バッチ焼鈍の場合は７２
０℃×３時間Ｎ2 雰囲気中で焼鈍し、酸化を起こさせる
ために露点０℃に調整したＮ2 ガスを毎分６０ｌ送給し
た。連続焼鈍では８００℃×２分間Ｎ2 雰囲気中で焼鈍
し、酸化を起こさせるために露点０℃に調整した。This heat treatment condition can be continuous and has a great possibility of cost reduction. (Example 4) The wire diameter of the composition of No. 6 in Table 1 was 5.5 m
A hot-rolled steel wire having a diameter of 2.0 mm was drawn by cold drawing using a wire drawing lubricant mainly composed of sodium stearate. As the pretreatment to the wire, as shown in Table 6, the wire was as-drawn, and a wire brush and a brush in which abrasive grains were embedded in an aramid fiber were used. Then, these wires are used with potassium citrate 10
% 72% in case of batch annealing after dipping and drying in aqueous solution
Annealing was performed in a N 2 atmosphere for 3 hours at 0 ° C., and 60 l of a N 2 gas adjusted to have a dew point of 0 ° C. to cause oxidation was fed per minute. In continuous annealing, annealing was performed in a N 2 atmosphere at 800 ° C. for 2 minutes, and the dew point was adjusted to 0 ° C. to cause oxidation.
【００３３】[0033]
【表６】 [Table 6]
【００３４】熱処理後、塩酸１０％の４０℃水溶液中に
２分間浸漬して酸洗したものに厚さ１μm のＣｕメッキ
を施し、仕上げ線径１．２ｍｍへ伸線してスパッタ発生
量の評価試験に供した。溶接条件は、１００％ＣＯ2 を
毎分２０ｌシールドガスとして流し、電流：２７０Ａ、
電圧：２８Ｖ、溶接速度：３０ｃｍ／分、溶接時間は２
分とした。スパッタは全数補集してスパッタ量を計測し
た。After the heat treatment, the product was immersed in a 10% hydrochloric acid aqueous solution at 40 ° C. for 2 minutes and pickled, and then Cu-plated to a thickness of 1 μm. The wire was drawn to a finished wire diameter of 1.2 mm and the amount of spatter generated was evaluated. It was submitted to the test. The welding conditions were as follows: 100% CO 2 was passed as a 20 l shield gas per minute, current: 270 A,
Voltage: 28 V, welding speed: 30 cm / min, welding time is 2
Minutes All spatters were collected and the amount of spatters was measured.
【００３５】スパッタ発生量の目標値は０．７０ｇ／分
以下に設定した。そして特に０．５０ｇ／分以下を良
（○）、０．５０ｇ／分越え０．７０ｇ／分以下を可
（△）、０．７０ｇ／分越えを不可（×）と評価した。
表６にその結果を併せて示す。表６からわかるように、
クエン酸カリを塗布したものではいずれもスパッタ発生
量の目標値０．３５ｇ／分以下を満足するが、さらに＃
５００以下のブラシによる研磨を行ったものでは連続焼
鈍のような短時間の熱処理でも十分低いスパッタが得ら
れている。The target value of the spatter generation amount was set to 0.70 g / min or less. Then, in particular, 0.50 g / min or less was evaluated as good (◯), 0.50 g / min or more and 0.70 g / min or less was acceptable (Δ), and 0.70 g / min or more was not acceptable (x).
The results are also shown in Table 6. As you can see from Table 6,
All the products coated with potassium citrate satisfy the target value of spatter generation of 0.35 g / min or less.
In the case of polishing with a brush of 500 or less, sufficiently low spatter can be obtained even by a short time heat treatment such as continuous annealing.
【００３６】（実施例５）表１における No.６の組成の
線径５．５ｍｍの熱延鋼線をステアリン酸ナトリウムを
主体とする伸線潤滑剤を用いて冷間伸線によって線径
２．０ｍｍとした鋼線を素材として用いた。ワイヤへの
前処理としては表７に示す酸洗条件で表面を粗面化した
ものと、伸線ままのものとを準備した。(Example 5) A hot rolled steel wire having a composition of No. 6 in Table 1 and a wire diameter of 5.5 mm was drawn by cold drawing using a wire drawing lubricant mainly containing sodium stearate. A steel wire of 0.0 mm was used as a material. As the pretreatment of the wire, a wire whose surface was roughened under the pickling conditions shown in Table 7 and a wire which was as-drawn were prepared.
【００３７】次いで、これらワイヤをクエン酸カリ１０
％水溶液中に浸漬乾燥した後、８００℃×１０分間Ｎ2
雰囲気中で焼鈍し、酸化を起こさせるために露点０℃に
調整したＮ2 ガスを毎分６０ｌ送給した。Then, these wires are put in potassium citrate 10
% Aqueous solution, then N 2
60 liters of N 2 gas, which was annealed in the atmosphere and adjusted to have a dew point of 0 ° C. to cause oxidation, was fed per minute.
【００３８】[0038]
【表７】 [Table 7]
【００３９】熱処理後、塩酸１０％の４０℃水溶液中に
２分間浸漬して酸洗したものに厚さ１μm のＣｕメッキ
を施し、仕上げ線径１．２ｍｍへ伸線してスパッタ発生
量の評価試験に供した。溶接条件は、１００％ＣＯ2 を
毎分２０ｌシールドガスとして流し、電流：２７０Ａ、
電圧：２８Ｖ、溶接速度：３０ｃｍ／分、溶接時間は２
分とした。スパッタは全数補集してスパッタ量を計測し
た。After the heat treatment, the product was immersed in an aqueous solution of 10% hydrochloric acid at 40 ° C. for 2 minutes and pickled, and then plated with Cu having a thickness of 1 μm, and drawn to a finished wire diameter of 1.2 mm to evaluate the amount of spatter generation. It was submitted to the test. The welding conditions were as follows: 100% CO 2 was passed as a 20 l shield gas per minute, current: 270 A,
Voltage: 28 V, welding speed: 30 cm / min, welding time is 2
Minutes All spatters were collected and the amount of spatters was measured.
【００４０】スパッタ発生量の目標値は０．７０ｇ／分
以下に設定した。そして特に０．５０ｇ／分以下を良
（○）、０．５０ｇ／分越え０．７０ｇ／分以下を可
（△）、０．７０ｇ／分越えを不可（×）と評価した。
表７にその結果を併せて示す。表７からわかるように、
酸洗条件で表面を粗面化したものはいずれも短時間の熱
処理でもアルカリ金属含有量１ｐｐｍ以上を確保でき、
スパッタ発生量の目標値０．７０ｇ／分以下を満足す
る。The target value of the spatter generation amount was set to 0.70 g / min or less. Then, in particular, 0.50 g / min or less was evaluated as good (◯), 0.50 g / min or more and 0.70 g / min or less was acceptable (Δ), and 0.70 g / min or more was not acceptable (x).
The results are also shown in Table 7. As you can see from Table 7,
Any of those whose surface is roughened under pickling conditions can secure an alkali metal content of 1 ppm or more even with a short time heat treatment,
The target value of the spatter generation amount of 0.70 g / min or less is satisfied.
【００４１】この熱処理条件は連続化が可能であり、大
きなコスト削減の可能性を持つものである。以上述べた
表１におけるNo.６の組成の実施例について、アルカリ
金属含有量とスパッタ発生量の関係を示したものが図１
である。いずれの方法においてもアルカリ金属含有量を
１ｐｐｍ以上とすることにより、スパッタ発生量を０．
７０ｇ／ｍｉｎ以下に抑えることができる。This heat treatment condition can be continuous and has a great possibility of cost reduction. FIG. 1 shows the relationship between the alkali metal content and the amount of spatter generated in the example of the composition of No. 6 in Table 1 described above.
Is. In any of the methods, the amount of spatter generated is set to 0.1 by setting the alkali metal content to 1 ppm or more.
It can be suppressed to 70 g / min or less.
【００４２】[0042]
【発明の効果】本発明により、メッキ密着性、メッキ表
面錆などのおそれのない、しかもスパッタ発生量の著し
く少ない炭酸ガスシールドアーク溶接用ワイヤが得られ
るようになった。According to the present invention, it is possible to obtain a carbon dioxide shielded arc welding wire which is free from the risk of plating adhesion, rust on the plating surface, and the amount of spatter generated is extremely small.
【図１】アルカリ金属含有量とスパッタ発生量との関係
を示す図面である。FIG. 1 is a diagram showing a relationship between an alkali metal content and a spatter generation amount.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中野 善文 千葉県千葉市中央区川崎町１番地 川崎製 鉄株式会社技術研究本部内 (72)発明者 田畑 綽久 岡山県倉敷市水島川崎通１丁目（番地な し） 川崎製鉄株式会社水島製鉄所内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshifumi Nakano 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Prefecture Technical Research Division, Kawasaki Steel Co., Ltd. (No house number) Kawashima Steel Works Mizushima Works
Claims (6)
つワイヤ全体に対して１ｐｐｍ以上のアルカリ金属を該
内部酸化物中に含有することを特徴とする炭酸ガスシー
ルドアーク溶接用低スパッタワイヤ。1. A low spatter for carbon dioxide shielded arc welding, which has an internal oxide in the surface layer of a steel wire and contains 1 ppm or more of an alkali metal in the internal oxide with respect to the entire wire. Wire.
シュウ酸塩、クエン酸塩、ハロゲン化合物、燐酸塩のう
ち１種以上を塗布してから窒素ガス雰囲気中で焼鈍し、
銅メッキ、伸線加工を施すことを特徴とする炭酸ガスシ
ールドアーク溶接用低スパッタワイヤの製造方法。2. A surface of a steel wire is coated with at least one of an oxalate, a citrate, a halogen compound and a phosphate made of an alkali metal, and then annealed in a nitrogen gas atmosphere,
A method for producing a low-spatter wire for carbon dioxide shielded arc welding, which comprises performing copper plating and wire drawing.
した後に、アルカリ金属よりなるシュウ酸塩、クエン酸
塩、ハロゲン化合物、燐酸塩のうち１種以上を塗布して
から窒素ガス雰囲気中で焼鈍し、銅メッキ、伸線加工を
施すことを特徴とする炭酸ガスシールドアーク溶接用低
スパッタワイヤの製造方法。3. After removing the lubricant remaining on the surface of the steel wire, at least one of an oxalate, a citrate, a halogen compound and a phosphate of an alkali metal is applied and then in a nitrogen gas atmosphere. A method for producing a low-spatter wire for carbon dioxide shielded arc welding, which comprises annealing with a copper plate, followed by copper plating and wire drawing.
冷間伸線した後の鋼ワイヤの表面に、又は冷間伸線した
後ショットブラスト処理した鋼ワイヤの表面にアルカリ
金属よりなるシュウ酸塩、クエン酸塩、ハロゲン化合
物、燐酸塩のうち１種以上を塗布してから窒素ガス雰囲
気中で焼鈍し、銅メッキ、伸線加工を施すことを特徴と
する炭酸ガスシールドアーク溶接用低スパッタワイヤの
製造方法。4. Oxalic acid made of an alkali metal on the surface of a steel wire after hot wire drawing and shot blasting and cold drawing, or on the surface of cold wire drawing and shot blasting steel wire. Low spatter for carbon dioxide shielded arc welding, characterized by applying at least one of salt, citrate, halogen compound, and phosphate, annealing in nitrogen gas atmosphere, copper plating, and wire drawing. Wire manufacturing method.
鋼ワイヤの表面にアルカリ金属よりなるシュウ酸塩、ク
エン酸塩、ハロゲン化合物、燐酸塩のうち１種以上を塗
布してから窒素ガス雰囲気中で焼鈍し、銅メッキ、伸線
加工を施すことを特徴とする炭酸ガスシールドアーク溶
接用低スパッタワイヤの製造方法。5. A nitrogen gas is obtained by applying one or more kinds of oxalates, citrates, halogen compounds and phosphates made of an alkali metal to the surface of a steel wire which has been cold-drawn and then brush-polished. A method for producing a low sputter wire for carbon dioxide shielded arc welding, which comprises annealing in an atmosphere, copper plating, and wire drawing.
表面にアルカリ金属よりなるシュウ酸塩、クエン酸塩、
ハロゲン化合物、燐酸塩のうち１種以上を塗布してから
窒素ガス雰囲気中で焼鈍し、銅メッキ、伸線加工を施す
ことを特徴とする炭酸ガスシールドアーク溶接用低スパ
ッタワイヤの製造方法。6. An oxalate or citrate made of an alkali metal on the surface of a steel wire which has been cold-drawn and then pickled.
A method for producing a low-sputtering wire for carbon dioxide shielded arc welding, which comprises applying at least one of a halogen compound and a phosphate, followed by annealing in a nitrogen gas atmosphere, copper plating and wire drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13069394A JP2901492B2 (en) | 1994-06-13 | 1994-06-13 | Low spatter wire for carbon dioxide shielded arc welding and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13069394A JP2901492B2 (en) | 1994-06-13 | 1994-06-13 | Low spatter wire for carbon dioxide shielded arc welding and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH081369A true JPH081369A (en) | 1996-01-09 |
| JP2901492B2 JP2901492B2 (en) | 1999-06-07 |
Family
ID=15040370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13069394A Expired - Lifetime JP2901492B2 (en) | 1994-06-13 | 1994-06-13 | Low spatter wire for carbon dioxide shielded arc welding and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2901492B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166693A (en) * | 2010-02-26 | 2011-08-31 | 宝山钢铁股份有限公司 | Antirust method for cold drawing production of high-strength alloy welding wire |
-
1994
- 1994-06-13 JP JP13069394A patent/JP2901492B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166693A (en) * | 2010-02-26 | 2011-08-31 | 宝山钢铁股份有限公司 | Antirust method for cold drawing production of high-strength alloy welding wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2901492B2 (en) | 1999-06-07 |
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