TWI548479B - Self - shielded flux - cored wire for high toughness electrical welding - Google Patents
Self - shielded flux - cored wire for high toughness electrical welding Download PDFInfo
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Description
本發明是關於一種藥芯焊絲，特別是一種高韌性電氣焊用自保護藥芯焊絲。The invention relates to a flux cored wire, in particular to a self-shielded flux cored wire for high toughness electrical welding.
在進行厚板重型接頭之快速焊接作業時，如：鋼結構、箱型柱、重型結構、補強板等，通常是採用垂直立向單道焊接技術，主要是因為其具有熔填效率高、母材組裝簡便、設備操作容易，且不需要長時間的焊工養成訓練等優點。In the rapid welding of thick plate heavy joints, such as steel structure, box column, heavy structure, reinforcing plate, etc., vertical vertical single-pass welding technology is usually adopted, mainly because it has high melting efficiency and mother. The material is easy to assemble, easy to operate, and does not require long-term welder training.
然而，配套使用的焊材為低合金鋼自保護藥芯焊絲，在入熱量高的焊接條件下，焊接工藝性能以及焊縫金屬衝擊韌性等往往較差，不能滿足實際需要。However, the matching welding consumables are low-alloy steel self-shielded flux-cored welding wires. Under the welding conditions with high heat input, the welding process performance and the weld metal impact toughness are often poor, which cannot meet the actual needs.
本發明之目的是在提供一種所形成焊縫機械強度優異，適用於厚板重型接頭快速焊接作業的高韌性電氣焊用自保護藥芯焊絲。The object of the present invention is to provide a self-shielded flux-cored wire for high-toughness electrical welding which is excellent in mechanical strength of the formed weld and suitable for rapid welding of thick plate heavy joints.
本發明之高韌性電氣焊用自保護藥芯焊絲，是包含一鋼帶，以及一包裹在該鋼帶內的焊藥。該焊藥佔該高韌性電氣焊用自保護藥芯焊絲之總重量的20～30%，以該高韌性電氣焊用自保護藥芯焊絲的總重量為100wt%計，該焊藥包含以下組分：氟化物：2.0～6.0wt%；氧化物：1.0～4.0wt%；碳酸鹽：0.2～1.0wt%；錳：1.0～4.0wt%；矽：0.2～1.2wt%；鎳：0.4～2.0wt%；鉬：0.1～1.0wt%；鉻：0.05～0.2wt%；釩：0.05～0.2wt%；以及鐵：餘量。The self-shielded flux cored wire for high toughness electrical welding of the present invention comprises a steel strip and a flux wrapped in the steel strip. The flux accounts for 20-30% of the total weight of the self-shielded flux-cored wire for the high-toughness electrical welding, and the total weight of the self-shielded flux-cored wire for the high-toughness electrical welding is 100% by weight, and the flux comprises the following group Points: fluoride: 2.0 to 6.0 wt%; oxide: 1.0 to 4.0 wt%; carbonate: 0.2 to 1.0 wt%; manganese: 1.0 to 4.0 wt%; rhodium: 0.2 to 1.2 wt%; nickel: 0.4 to 2.0 Wt%; molybdenum: 0.1 to 1.0 wt%; chromium: 0.05 to 0.2 wt%; vanadium: 0.05 to 0.2 wt%; and iron: balance.
本發明之功效在於，通過上述的配方組成，在焊接時，電弧連續穩定、熔渣流動性好、焊道成型美觀、脫渣容易，且飛濺少，特別是，所形成焊縫的機械性能優異，適用於厚板重型接頭的快速焊接作業。The invention has the advantages that the arc composition is stable, the slag fluidity is good, the bead is beautifully formed, the slag is easy to be slag, and the spatter is less, and the mechanical properties of the formed weld are excellent. It is suitable for fast welding of heavy plate heavy joints.
本發明之高韌性電氣焊用自保護藥芯焊絲，包含一鋼帶，以及一包裹在該鋼帶內的焊藥。The self-shielded flux cored wire for high toughness electrical welding of the present invention comprises a steel strip and a flux wrapped in the steel strip.
以該鋼帶的總重量為100wt%計，該鋼帶所包含組分(wt%)如[表1]所示。The component (wt%) contained in the steel strip is as shown in [Table 1], based on 100% by weight of the total weight of the steel strip.
該焊藥佔該高韌性電氣焊用自保護藥芯焊絲之總重量的20%～30%，基於該高韌性電氣焊用自保護藥芯焊絲之總重量為100wt%計，該焊藥所包含組分(wt%)如[表2]所示：The flux accounts for 20% to 30% of the total weight of the self-shielded flux-cored wire for the high-toughness electrical welding, and the total weight of the self-shielded flux-cored wire for the high-toughness electrical welding is 100% by weight, and the flux includes The components (wt%) are as shown in [Table 2]:
具體分析本發明之各組分在焊接作業中各自發揮的作用如下：所述氟化物，是選自於二氟化鈣(CaF2)、二氟化鋰(LiF2)、氟矽酸鉀(K2SiF6)，或此等之一組合，氟化物的主要作用為造渣和稀渣，同時也有冶金去氫的能力。氟化物在高溫下容易汽化，在焊接時形成蒸汽囊，對熔池產生保護作用，因為LiF2與K2SiF6分解出來的K、Li等電離勢能較小，有利於提高電弧的穩定性，同時大量的氟化物參與造渣，能使得熔渣流動性增加，讓熔渣可以順利從排渣口流出，確保電弧的連續性；但是，由於F為消電離元素，若氟化物加入過多，電弧穩定性下降，飛濺增加，同時熔渣流動性太好，無法對熔池發揮保護的作用。所以，將氟化物的含量是控制在介於2.0～6.0wt%之間。Specifically, the respective components of the present invention play a role in the welding operation as follows: the fluoride is selected from the group consisting of calcium difluoride (CaF 2 ), lithium difluoride (LiF 2 ), and potassium fluoroantimonate ( K 2 SiF 6 ), or a combination of these, the main role of fluoride is slagging and slag, as well as metallurgical dehydrogenation. Fluoride easily gasified at high temperature, vapor pockets are formed during the welding, the protective effect of the molten pool, because LiF 2 K 2 SiF 6 and the decomposition of the K, Li and other small ionization potential, increases the stability of the arc, At the same time, a large amount of fluoride participates in the slag formation, which can increase the fluidity of the slag, allowing the slag to flow smoothly from the slag discharge port and ensure the continuity of the arc; however, since F is an ionization element, if the fluoride is added too much, the arc The stability is lowered, the splash is increased, and the slag fluidity is too good to protect the molten pool. Therefore, the content of the fluoride is controlled to be between 2.0 and 6.0% by weight.
所述碳酸鹽，能選自於碳酸鎂(MgCO3)、碳酸鈣(CaCO3)、碳酸鉀(K2CO3)、碳酸鋇(BaCO3)，或此等之一組合，碳酸鹽的主要作用為造氣和造渣作用，若碳酸鹽的含量過少，造氣能力不足，對焊縫的保護作用降低，造成焊縫的力學性能下降，若碳酸鹽的含量過高，造氣量過大，電弧穩定性下降，飛濺增大。所以，本發明之碳酸鹽的含量是介於0.2～1.0wt%之間。The carbonate may be selected from magnesium carbonate (MgCO 3 ), calcium carbonate (CaCO 3 ), potassium carbonate (K 2 CO 3 ), barium carbonate (BaCO 3 ), or a combination thereof, the main component of the carbonate The function is gas-making and slagging. If the content of carbonate is too small, the gas-making ability is insufficient, the protection effect on the weld is reduced, and the mechanical properties of the weld are degraded. If the content of carbonate is too high, the gas production is too large, the arc The stability is reduced and the splash is increased. Therefore, the content of the carbonate of the present invention is between 0.2 and 1.0% by weight.
所述氧化物，是選自於三氧化二鋁(Al2O3)、氧化鎂(MgO)、二氧化鈦(TiO2)，或此等之一組合，氧化物主要是可以改善熔渣的物化性能，調節熔渣的表面張力和熔點，使熔渣粘度適中，確保熔渣對焊道覆蓋均勻，約束焊道成型，若氧化物過量使用，則熔渣流動性變差，電弧連續性差，同時熔渣質地堅硬，脫渣困難。所以，本發明之氧化物的含量是介於1.0～4.0wt%之間。The oxide is selected from the group consisting of aluminum oxide (Al 2 O 3 ), magnesium oxide (MgO), titanium dioxide (TiO 2 ), or a combination thereof, and the oxide mainly improves the physical and chemical properties of the slag. Adjusting the surface tension and melting point of the slag to make the slag viscosity moderate, ensuring uniform coverage of the slag to the weld bead, and constraining the bead forming. If the oxide is used excessively, the slag fluidity is deteriorated, the arc continuity is poor, and the smelting is simultaneous The slag texture is hard and it is difficult to remove slag. Therefore, the content of the oxide of the present invention is between 1.0 and 4.0% by weight.
錳，用以提高熔敷金屬強度，同時也具有去氧和脫硫的作用，但若錳含量過高，熔敷金屬衝擊韌性會下降，所以，本發明之Mn的含量是介於1.0～4.0wt%之間。Manganese, used to increase the strength of deposited metal, but also has the function of deoxidation and desulfurization. However, if the manganese content is too high, the impact toughness of the deposited metal will decrease. Therefore, the content of Mn of the present invention is between 1.0 and 4.0. Between wt%.
矽，主用作用是通過矽錳聯合去氧，同時過渡合金元素，還可提高熔渣流動性，使得焊接波紋細膩。本發明之Si含量是介於0.2～1.2wt%之間。矽, the main role is to combine deoxidation with lanthanum manganese, while transitioning alloying elements, can also improve the slag fluidity, making the welding ripples fine. The Si content of the present invention is between 0.2 and 1.2% by weight.
鉬，也是提高熔敷金屬強度的元素，其特點是當Mo含量較低時，隨著Mo含量的增加，熔敷金屬的衝擊韌性下降幅度不大，當Mo含量增加到一定程度時，熔敷金屬的衝擊韌性會明顯下降，所以，本發明之Mo含量是介於0.10～1.0wt%之間。Molybdenum is also an element to improve the strength of deposited metal. It is characterized by the fact that when the Mo content is low, the impact toughness of the deposited metal decreases little with the increase of the Mo content. When the Mo content increases to a certain extent, the deposited gold The impact toughness of the genus is significantly reduced, so the Mo content of the present invention is between 0.10 and 1.0 wt%.
鎳，是提高熔敷金屬之韌性的主要元素，隨著Ni含量的增加，熔敷金屬之韌性逐漸上升，但其成本較高，本發明之Ni含量是介於0.4～2.0wt%之間。Nickel is a main element for improving the toughness of the deposited metal. As the Ni content increases, the toughness of the deposited metal gradually increases, but the cost thereof is high, and the Ni content of the present invention is between 0.4 and 2.0% by weight.
鉻，能夠有效地提高熔敷金屬的強度，但會同時降低熔敷金屬的衝擊韌性，本發明之Cr含量是介於0.05～0.20wt%之間。Chromium can effectively increase the strength of the deposited metal, but at the same time reduce the impact toughness of the deposited metal. The Cr content of the present invention is between 0.05 and 0.20% by weight.
釩，可以細化晶粒，提高熔敷金屬的強度和韌性，本發明之V含量是介於0.05～0.20wt%之間。Vanadium can refine grains and improve the strength and toughness of the deposited metal. The V content of the present invention is between 0.05 and 0.20% by weight.
藉以，本發明之高韌性電氣焊用自保護藥芯焊絲，通過上述各組分的配方組成，在焊接時，電弧連續穩定、熔渣流動性好、焊道成型美觀、脫渣容易，且飛濺少，特別是，所形成焊縫的機械性能優異，如強度大於500MPa、-30℃衝擊功大於50J，適用於厚板重型接頭的快速焊接作業。Therefore, the self-shielded flux-cored wire for high-toughness electric welding of the present invention is composed of the above-mentioned components, and the arc is continuously stabilized during welding, the slag fluidity is good, the bead is beautifully formed, the slag is easy to be detached, and the slag is splashed. Less, in particular, the welds formed have excellent mechanical properties, such as strengths greater than 500 MPa and -30 °C impact work greater than 50 J, which is suitable for rapid welding operations of heavy plate heavy joints.
本發明將就以下實施例作進一步說明，但應瞭解的是，該實施例僅為例示說明之用，而不應被解釋為本發明實施之限制。The invention is further illustrated by the following examples, but it should be understood that this embodiment is intended to be illustrative only and not to be construed as limiting.
＜實施例＞<Example>
實施例1至7，是採用焊絲生產行業內通用的製造工藝製得，各實施例之焊藥的組分比例(wt%)如[表3]所示，各實施例之鋼帶的組分比例(wt%)如[表4]所示。Examples 1 to 7 were prepared by a common manufacturing process in the wire production industry, and the composition ratio (wt%) of the flux of each example was as shown in [Table 3], and the components of the steel strip of each example. The ratio (wt%) is shown in [Table 4].
在相同操作條件下，以各實施例進行焊接後，各實施例所形成焊縫之熔敷金屬的成分(wt%)分析結果與力學性能測定結果，分別如[表5]、[表6]所示。Under the same operating conditions, after welding in each of the examples, the composition (wt%) analysis results and the mechanical properties of the deposited metal formed by the welds of the respective examples are as shown in [Table 5] and [Table 6], respectively. Shown.
如[表6]所示結果可知，使用本發明之高韌性電氣焊用自保護藥芯焊絲進行焊接作業，所形成焊縫的強度大於500MPa，-30℃衝擊功大於50J，能適用厚板重型接頭的快速焊接。As shown in [Table 6], it can be seen that the self-shielded flux-cored wire for high-toughness electric welding of the present invention is used for welding work, and the strength of the formed weld is greater than 500 MPa, and the impact energy of -30 ° C is greater than 50 J, which can be applied to heavy plate heavy duty. Quick soldering of the joint.
惟以上所述者，僅為本發明之較佳實施例而已，當不能以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及發明說明內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.
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| TW100146477A TWI548479B (en) | 2011-12-15 | 2011-12-15 | Self - shielded flux - cored wire for high toughness electrical welding |
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| TW100146477A TWI548479B (en) | 2011-12-15 | 2011-12-15 | Self - shielded flux - cored wire for high toughness electrical welding |
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| TWI548479B true TWI548479B (en) | 2016-09-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131123C (en) * | 2001-10-12 | 2003-12-17 | 安泰科技股份有限公司 | Flux-cored welding wire for downward vertically |
| CN101073863A (en) * | 2007-06-22 | 2007-11-21 | 安泰科技股份有限公司 | Self-protective and high-toughness flux-cord welding wire |
| CN101323057A (en) * | 2007-06-13 | 2008-12-17 | 中国船舶重工集团公司第七二五研究所 | High intensity metallic core type seamless flux-cored wire |
| TWI306044B (en) * | 2005-04-11 | 2009-02-11 | Lincoln Global Inc | High strength flux cored electrode and method of arc welding high strength steel |
| JP2009119497A (en) * | 2007-11-15 | 2009-06-04 | Nippon Steel & Sumikin Welding Co Ltd | Flux-cored wire for self-shielded arc welding for fire resistant steel |
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2011
- 2011-12-15 TW TW100146477A patent/TWI548479B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131123C (en) * | 2001-10-12 | 2003-12-17 | 安泰科技股份有限公司 | Flux-cored welding wire for downward vertically |
| TWI306044B (en) * | 2005-04-11 | 2009-02-11 | Lincoln Global Inc | High strength flux cored electrode and method of arc welding high strength steel |
| CN101323057A (en) * | 2007-06-13 | 2008-12-17 | 中国船舶重工集团公司第七二五研究所 | High intensity metallic core type seamless flux-cored wire |
| CN101073863A (en) * | 2007-06-22 | 2007-11-21 | 安泰科技股份有限公司 | Self-protective and high-toughness flux-cord welding wire |
| JP2009119497A (en) * | 2007-11-15 | 2009-06-04 | Nippon Steel & Sumikin Welding Co Ltd | Flux-cored wire for self-shielded arc welding for fire resistant steel |
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