KR101311794B1 - Covered electrode for nickel based high chromium alloy welding - Google Patents

Covered electrode for nickel based high chromium alloy welding Download PDF

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KR101311794B1
KR101311794B1 KR1020120013557A KR20120013557A KR101311794B1 KR 101311794 B1 KR101311794 B1 KR 101311794B1 KR 1020120013557 A KR1020120013557 A KR 1020120013557A KR 20120013557 A KR20120013557 A KR 20120013557A KR 101311794 B1 KR101311794 B1 KR 101311794B1
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nickel
welding
comparative example
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based high
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KR20130092071A (en
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정석진
신철훈
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현대종합금속 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0261—Rods, electrodes, wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0261—Rods, electrodes, wires
    • B23K35/0272—Rods, electrodes, wires with more than one layer of coating or sheathing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3033—Ni as the principal constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Nonmetallic Welding Materials (AREA)

Abstract

본 발명은 용접작업성이 우수하고, 용접결함이 없는 니켈기 고크롬 합금의 용접에 사용되는 피복 아크 용접봉에 관한 것으로,
93중량% 이상의 니켈로 이루어진 고순도 니켈 심선에 피복제를 도포하여 이루어지며, 상기 피복제가 중량%로, 금속탄산염 15~25%, 금속불화물 10~20%, 탈산제 1~4%, 슬래그 형성제 1~4%, 합금제 55~65%, 고착제 1~3%를 포함하고,
(금속탄산염+금속불화물+합금제)/(탈산제+고착제+슬래그형성제)의 값이 15~19인 것을 만족하는 니켈기 고크롬 합금용 피복 아크 용접봉을 제공한다.The present invention relates to a coated arc electrode used for welding a nickel-based high chromium alloy excellent in welding workability and free from welding defects.
It is made by applying a coating material to a high purity nickel core wire made of 93% by weight or more of nickel, wherein the coating material is in weight%, 15-25% metal carbonate, 10-20% metal fluoride, 1-4% deoxidizer, and slag forming agent 1 Including-4%, alloy 55-65%, fixing agent 1-3%,
Provided is a coated arc welding rod for nickel-based high chromium alloys which satisfies the value of (metal carbonate + metal fluoride + alloying agent) / (deoxidant + fixing agent + slag forming agent) of 15 to 19.

Description

니켈기 고크롬 합금용 피복 아크 용접봉{COVERED ELECTRODE FOR NICKEL BASED HIGH CHROMIUM ALLOY WELDING}Covered arc welding rod for nickel-based high chromium alloy {COVERED ELECTRODE FOR NICKEL BASED HIGH CHROMIUM ALLOY WELDING}

본 발명은 니켈기 고크롬 합금의 용접에 사용되는 니켈기 고크롬 합금용 피복 아크 용접봉에 관한 것이다.
The present invention relates to a coated arc electrode for nickel-based high chromium alloys used for welding nickel-based high chromium alloys.

니켈기 고크롬 합금은 니켈과 크롬이 복합적으로 작용하여 내산화성을 향상시키고, 스테인리스강보다 강도가 우수하며, 특히 650℃ 이상에서는 더욱 우수하여 주로 고강도와 내산화성, 내식성이 많이 요구되는 분야에 광범위하게 적용되고 있다. Nickel-based high chromium alloys have a combination of nickel and chromium to improve oxidation resistance, and are superior in strength to stainless steel, especially at temperatures above 650 ° C., and are widely used in areas requiring high strength, oxidation resistance, and corrosion resistance. Is being applied.

니켈기 고크롬 합금용 피복 아크 용접봉은 Ni-Cr-Fe 합금강(Inconel 600), Ni-Cr-Fe 합금 클래드강의 클래드면 용접 또는 인코넬과 저합금강 또는 스테인리스강과의 이재용접 등 다양한 분야에서 사용되고 있으며, 다양한 용접재료가 개발되고 있다.
The coated arc welding rod for nickel-based high chromium alloys is used in various fields such as clad face welding of Ni-Cr-Fe alloy steel (Inconel 600), Ni-Cr-Fe alloy clad steel, or dissimilar welding between Inconel and low alloy steel or stainless steel. Various welding materials are being developed.

그러나, 종래의 니켈기 고크롬 합금용 피복 아크 용접봉은 비드퍼짐성이 떨어지고 용입이 작으며, 용접 비드가 블록형으로 되기 쉬워 슬래그 혼입 및 균열 발생 등의 용접결함 발생빈도가 높은 문제가 있었다.
However, conventional nickel-based high chromium alloy coated arc welding rods have a problem of poor bead spreadability, small penetration, and easy welding beads to become block-type, such as high occurrence of welding defects such as slag mixing and cracking.

이런 문제를 해결하기 위해서, 특허문헌 1에서는 니켈계 합금심선에 특정 성분범위를 갖는 피복제를 피복하여 용접작업성과 내균열저항성 및 고온인장강도를 확보하고자 하였다. 그러나, 상기 특허문헌 1에 의하더라도 현재 용접현장에서 요구하는 품질 수준에는 다소 미치지 못하는 문제가 있다.
In order to solve such a problem, Patent Document 1 was to cover the nickel-based alloy core wire with a coating material having a specific component range to ensure welding workability, crack resistance and high temperature tensile strength. However, even according to the patent document 1 there is a problem that is somewhat less than the quality level required by the current welding site.

한국 공개특허 2002-0078205호Korean Patent Publication No. 2002-0078205

본 발명의 일측면은 용접작업성이 우수하고, 용접결함이 없는 니켈기 고크롬 합금의 용접에 사용되는 피복 아크 용접봉을 제공하고자 하는 것이다.
One aspect of the present invention is to provide a coated arc electrode used for welding nickel-based high chromium alloy excellent in welding workability, no welding defects.

본 발명은 93중량% 이상의 니켈로 이루어진 고순도 니켈 심선에 피복제를 도포하여 이루어진 니켈기 고크롬 합금용 피복 아크 용접봉에 있어서,The present invention is a nickel-coated high-chromium alloy coated arc welding rod formed by applying a coating material to a high purity nickel core wire composed of 93% by weight or more of nickel,

상기 피복제는 중량%로, The coating agent in weight percent,

CaCO3, MgCO3, BaCO3 및 Li2CO3 로 이루어진 그룹에서 선택된 1종 이상인 금속탄산염 15~25%;15-25% of one or more metal carbonates selected from the group consisting of CaCO 3 , MgCO 3 , BaCO 3 and Li 2 CO 3 ;

CaF2, BaF2, MgF2 및 K2SiF6 로 이루어진 그룹에서 선택된 1종 이상인 금속불화물 10~20%;10-20% of at least one metal fluoride selected from the group consisting of CaF 2 , BaF 2 , MgF 2 and K 2 SiF 6 ;

Al, Mg 및 Ti 로 이루어진 그룹에서 선택된 1종 이상인 탈산제 1~4%;1% to 4% deoxidizer selected from the group consisting of Al, Mg and Ti;

Mn, Fe, Si, Cr 및 Nb 을 포함하는 합금제 55~65%;55 to 65% of an alloy containing Mn, Fe, Si, Cr, and Nb;

TiO2, ZrO2, SiO2 및 Al2O3 으로 이루어진 그룹에서 선택된 1종 이상인 슬래그 형성제 1~4%; 1 to 4% of a slag forming agent selected from the group consisting of TiO 2 , ZrO 2 , SiO 2 and Al 2 O 3 ;

고착제 1~3%; 및 나머지는 불가피한 불순물을 포함하고,1 to 3% binder; And the rest include unavoidable impurities,

(금속탄산염+금속불화물+합금제)/(탈산제+고착제+슬래그형성제)의 값이 15~19인 것을 만족하는 니켈기 고크롬 합금용 피복 아크 용접을 제공한다.
Provided is a coating arc welding for nickel-based high chromium alloy which satisfies the value of (metal carbonate + metal fluoride + alloying agent) / (deoxidant + fixing agent + slag forming agent) of 15 to 19.

본 발명 피복아크 용접봉을 이용하며, 니켈기 고크롬 합금의 아크 용접시에 아크안정성, 비드외관, 슬래그 유동성, 슬래그 박리성, 용융성, 용적이행 등과 같은 용접작업성이 향상되며, 용접부의 균열 발생을 억제할 수 있는 효과가 있다.
By using the coated arc welding rod of the present invention, welding workability such as arc stability, bead appearance, slag fluidity, slag peelability, meltability, and volume migration is improved during arc welding of a nickel-based high chromium alloy, and cracks are generated in the welded part. There is an effect that can be suppressed.

이하, 본 발명에 대해 상세히 설명한다.Hereinafter, the present invention will be described in detail.

본 발명의 니켈기 고크롬 합금용 피복 아크 용접봉은 니켈계 합금 심선이나, 고순도 니켈 심선에 피복제가 도포되어 있는 것이다.
In the coating arc welding rod for nickel-based high chromium alloy of the present invention, a coating agent is applied to a nickel-based alloy core wire or a high purity nickel core wire.

상기 니켈계 합금으로는 UNS NO625(60%Ni-22%Cr-9%Mo), UNS NO6082(72%Ni-20%Cr) 등이 있고, 상기 고순도 니켈 심선은 93중량%이상의 니켈로 이루어진 심선을 의미한다. 일반적으로 니켈기 고크롬 합금용 피복 아크 용접봉에는 고순도 니켈 심선을 사용하는 것이 바람직하다. 이는 고순도 니켈 심선이 니켈계 합금 심선에 비해 전기저항이 적고 내봉가열성이 우수하여 용접 효율성이 증가되는 장점이 있기 때문이다.
The nickel-based alloys include UNS NO625 (60% Ni-22% Cr-9% Mo), UNS NO6082 (72% Ni-20% Cr), and the high purity nickel core wire is made of 93 wt% or more nickel core wire. Means. In general, it is preferable to use a high purity nickel core wire for the coated arc welding rod for nickel-based high chromium alloy. This is because the high purity nickel core wire has less electric resistance and superior heat resistance than the nickel-based alloy core wire, thereby increasing the welding efficiency.

이하, 본 발명의 니켈기 고크롬 합금용 피복아크 용접봉의 피복제 조성에 대해 상세히 설명한다. 하기 함량은 피복제 전체의 중량%를 나타낸다.
Hereinafter, the coating composition of the coating arc electrode for nickel-based high chromium alloy of this invention is demonstrated in detail. The following content represents the weight percent of the total coating.

금속탄산염: 15~25%Metal Carbonate: 15 ~ 25%

상기 금속탄산염은 CaCO3, MgCO3, BaCO3, Li2CO3 등이 사용될 수 있다. 상기 금속탄산염은 용접 중 분해되어 CO2 가스를 발생시킴으로서, 아크분위기를 대기로부터 차폐하여 용융금속의 산화 및 질화를 방지하고, 용접부에 N2, O2 침입을 막아 건전한 용접금속을 유지할 수 있도록 도와주는 역할을 한다. As the metal carbonate, CaCO 3 , MgCO 3 , BaCO 3 , Li 2 CO 3, or the like may be used. The metal carbonate decomposes during welding to generate CO 2 gas, thereby shielding the arc atmosphere from the atmosphere to prevent oxidation and nitriding of the molten metal and to prevent N 2 and O 2 intrusion into the welding part to help maintain a healthy weld metal. Play a role.

상기 금속탄산염의 함량이 15% 미만에서는 상기 차폐 효과가 부족하여 기공이 발생하기 쉽고, 균열 등이 발생할 우려가 있으며, 25%를 초과하는 경우에는 슬래그의 유동성이 감소되어 용접 작업성이 저하되고 동시에 용접비드의 형상이 불량해지기 때문에, 그 함량은 15~25%인 것이 바람직하다.
When the content of the metal carbonate is less than 15%, the shielding effect is insufficient, so that pores are likely to occur, and cracks may occur, and when it exceeds 25%, the flowability of the slag is reduced, thereby reducing the welding workability. Since the shape of a weld bead becomes poor, it is preferable that the content is 15 to 25%.

금속불화물: 10~20%Metal Fluoride: 10 ~ 20%

상기 금속불화물은 CaF2, BaF2, MgF2, K2SiF6 등이 사용될 수 있다. 상기 금속불화물은 아크안정성을 향상시켜 스패터 발생량을 저감하고, 용접금속 중의 수소량을 저감시키는 역할을 한다. As the metal fluoride, CaF 2 , BaF 2 , MgF 2 , K 2 SiF 6, or the like may be used. The metal fluoride improves arc stability to reduce the amount of spatter generated and to reduce the amount of hydrogen in the weld metal.

상기 금속불화물의 함량이 10% 미만이면 비드외관이 저하됨과 동시에 입향자세에서의 용접이 곤란하게 되며, 20%를 초과하는 경우에는 스패터 및 흄 발생량이 증가하고 용접작업성이 저하되는 문제가 있기 때문에, 그 함량은 10~20%인 것이 바람직하다.
When the content of the metal fluoride is less than 10%, the appearance of the bead decreases and welding in the orientation posture becomes difficult. When the content of the metal fluoride exceeds 20%, the amount of spatter and fume increases and the workability of welding decreases. Therefore, the content is preferably 10 to 20%.

탈산제: 1~4%Deoxidizer: 1-4%

상기 탈산제는 Al, Mg, Ti 등이 사용될 수 있다. 상기 탈산제는 용접금속 내결함성을 확보하고 용접금속의 기계적 성능(인장강도와 인성 등)을 향상시키는 역할을 한다.The deoxidizer may be Al, Mg, Ti and the like. The deoxidizer serves to secure weld metal defect resistance and to improve mechanical performance (tensile strength and toughness) of the weld metal.

상기 탈산제가 1% 미만으로 첨가된 경우에는 상기 역할을 기대하기 어렵고, 균열 등이 발생할 가능성이 높아지며, 4%를 초과하는 경우에는 과탈산 현상에 의해 기공 및 스패터 등의 발생이 과다해질 우려가 있다. 따라서, 상기 탈산제의 함량은 1~4%인 것이 바람직하다.
If the deoxidizer is added less than 1%, it is difficult to expect the role, and the likelihood of cracking is increased, and if it exceeds 4%, there is a concern that excessive pore and spatter, etc. may occur due to peroxidation. have. Therefore, the content of the deoxidizer is preferably 1 to 4%.

합금제: 55~65%Alloy: 55-65%

상기 합금제는 의도하는 용접금속의 화학성분을 맞추기 위해 필수불가결하게 요구되는 성분으로, Mn, Fe, Si, Cr 및 Nb을 포함하며, 그 조성은 합금제 전중량에 대해, Mn: 20~35%, Fe: 10~25%, Si: 1~5%, Cr: 40~55%, Nb: 5~10%의 범위로 구성되는 것이 바람직하다. 상기 합금제는 55~65%의 범위로 첨가되는 것이 바람직하다. 상기 함량이 55% 미만이면, 합금화 능력이 부족하여 의도하는 용접금속 화학성분을 만족시키기 어렵고, 65%를 초과하면 용접작업성이 저하되는 문제가 있다.
The alloying agent is indispensably required to match the chemical composition of the intended welding metal, and includes Mn, Fe, Si, Cr, and Nb, the composition of which is based on the total weight of the alloy, Mn: 20 ~ 35 It is preferable to be comprised in the range of%, Fe: 10-25%, Si: 1-5%, Cr: 40-55%, and Nb: 5-10%. It is preferable that the said alloying agent is added in 55 to 65% of range. If the content is less than 55%, there is a problem that the alloying ability is insufficient to satisfy the intended weld metal chemical composition, and if the content exceeds 65%, the weldability is reduced.

슬래그형성제: 1~4%Slag Forming Agent: 1 ~ 4%

상기 슬래그형성제는 슬래그 형성을 도와주어 양호한 비드형상을 만드는 역할을 하는 성분으로서, 슬래그의 유동성을 개선시키고 아크안정성 및 슬래그 포피성을 확보하기 위해 첨가된다. 상기 슬래그형성제는 TiO2, ZrO2, SiO2, Al2O3 등이 사용될 수 있다. 상기 슬래그 형성제의 함량이 1% 미만이면 슬래그 유동성 및 포피성이 열악해지며, 4%를 초과하게 되면 염기도 지수(Basic Index)를 증가시켜 내균열성이 악화되는 문제가 있으므로, 그 함량을 1~4%로 하는 것이 바람직하다.
The slag forming agent is a component that helps to form the slag to create a good bead shape, it is added to improve the flowability of the slag and secure the arc stability and slag foreskinability. The slag forming agent may be used TiO 2 , ZrO 2 , SiO 2 , Al 2 O 3 and the like. When the content of the slag forming agent is less than 1%, the slag fluidity and foreskinability are poor, and when the content of the slag forming agent is more than 4%, there is a problem that the crack resistance is deteriorated by increasing the basic index, so that the content is 1 It is preferable to set it as -4%.

고착제: 1~3%Fixing agent: 1-3%

상기 고착제는 피복제를 심선에 잘 붙게 하기 위해서 사용되며, 규산소다, 규산카리, 규산리튬 등의 물유리를 사용하는 것이 바람직하다. 상기 고착제의 첨가량이 1% 미만이면 첨가에 따른 효과를 얻기 어려우며, 3%를 초과하는 경우에는 피복제가 심선에 균일하게 도포되기 어려운 문제가 있으므로, 그 함량은 1~3%로 하는 것이 바람직하다.
The fixing agent is used to adhere the coating agent to the core wire, and it is preferable to use water glass such as sodium silicate, carry silicate or lithium silicate. If the addition amount of the fixing agent is less than 1%, it is difficult to obtain the effect of the addition, if it exceeds 3%, there is a problem that the coating agent is difficult to be uniformly applied to the core wire, the content is preferably 1 to 3%.

본 발명의 피복제 전체 조성 중, (탈산제+고착제+슬래그형성제)의 양이 증가하고, 상대적으로 (금속탄산염+금속불화물+합금제)의 양이 감소하는 경우, 용접시 슬래그 박리성 및 유동성이 열악해질 수 있고, 그 반대의 경우에는 아크성 및 용융성이 저하되는 문제가 있다. 이를 위해서, (금속탄산염+금속불화물+합금제)/(탈산제+고착제+슬래그형성제)의 값을 적정범위로 제어하는 것이 필요하다. In the overall composition of the coating agent of the present invention, when the amount of (deoxidant + fixing agent + slag forming agent) is increased, and the amount of (metal carbonate + metal fluoride + alloying agent) is relatively decreased, slag peelability and fluidity during welding This may be inferior, and in the opposite case, there is a problem in that arc and meltability are lowered. For this purpose, it is necessary to control the value of (metal carbonate + metal fluoride + alloying agent) / (deoxidizer + fixing agent + slag forming agent) to an appropriate range.

본 발명의 피복제는 (금속탄산염+금속불화물+합금제)/(탈산제+고착제+슬래그형성제)의 값이 15~19을 만족하는 것이 바람직하다. 상기 관계식의 값이 15미만이거나, 19를 초과하는 경우에는 상기 문제가 나타나게 되나, 15~19의 범위에서는 양호한 용접작업성을 확보할 수 있다.
It is preferable that the coating agent of this invention satisfy | fills the value of (metal carbonate + metal fluoride + alloying agent) / (deoxidizer + fixing agent + slag forming agent) 15-19. When the value of the relational expression is less than 15 or exceeds 19, the problem appears, but in the range of 15 to 19, good welding workability can be ensured.

이하, 본 발명의 실시예에 대해 상세히 설명한다. 하기 실시예는 본 발명의 이해를 위한 것일 뿐, 본 발명을 한정하는 것은 아니다.Hereinafter, embodiments of the present invention will be described in detail. The following examples are only for the understanding of the present invention, but not for limiting the present invention.

(실시예)(Example)

하기 표 1의 조성성분을 갖는 고순도 니켈 심선에, 하기 표 2 및 3의 조성으로 이루어진 피복제를 피복하여 니켈기 고크롬 합금용 피복 아크 용접봉을 마련하였다. To a high purity nickel core wire having a composition component of Table 1 below, a coating agent having a composition of Tables 2 and 3 was coated to prepare a coated arc welding rod for nickel-based high chromium alloy.

상기 피복 아크 용접봉을 이용하여 용접을 실시하고, 용접작업성 및 내균열성을 평가하여 그 결과를 하기 표 4에 나타내었다.
Welding was performed using the coated arc welding rod, and the welding workability and crack resistance were evaluated, and the results are shown in Table 4 below.

용접작업성은 교류 및 직류 전원에서 용접을 행하였으며, 용접전류는 용접자세에 따라 120~200A를 사용하였다. 용접자세(하향, 입향상진, 횡향, 수평 필렛)별로 용접을 실시하여, 용접사 관능평가를 통해 항목별로 1~5점을 부여하여, 그 총점이 30점 만점에 26점 이상인 경우를 양호한 것으로 판정하여 표 4에 그 결과를 나타내었다.
Welding workability was performed by AC and DC power supply, and welding current was 120 ~ 200A depending on welding posture. Perform welding by welding posture (downward, upright, lateral and horizontal fillet), and give 1 ~ 5 points to each item through welder sensory evaluation, and judge that the total score is 26 or more out of 30 points. Table 4 shows the results.

내균열성 평가는 아래의 용접조건으로 용접을 실시하여, 크레이터부를 제외한 용접비드에서의 균열발생 유무를 통해 평가하여, 그 결과를 표 4에 나타내었다.Cracking resistance evaluation was performed by welding under the following welding conditions, and evaluated through the presence of cracks in the weld bead except the crater portion, the results are shown in Table 4.

내균열성 평가 용접조건Cracking Resistance Evaluation Welding Condition

- 모재: SS400 Cr 도금 열처리 환봉-Base material: SS400 Cr-plated heat-treated round bar

- 용접전류: ACWelding current: AC

- 용접봉 선경: 3.2㎜-Welding rod diameter: 3.2mm

- 용접조건: 120~160A / 20~23V-Welding condition: 120 ~ 160A / 20 ~ 23V

- 용접자세: 하향
-Welding posture: downward

CC SiSi MnMn PP SS NiNi CrCr MoMo CuCu ≤0.1≤0.1 ≤0.1≤0.1 ≤0.01? 0.01 ≤0.02≤0.02 ≤0.02≤0.02 ≥98.0≥98.0 ≤0.01? 0.01 ≤0.01? 0.01 ≤0.01? 0.01

구분division 성분 함량Ingredient content 수식 값***Formula Value *** 금속탄산염Metal carbonate 금속불화물Metal fluoride 슬래그형성제Slag forming agent 탈산제Deoxidizer 합금제*Alloy * 고착제**Fixing agent ** 발명예1Inventory 1 1616 18.518.5 22 1.51.5 6060 22 17.217.2 발명예2Inventive Example 2 2424 14.514.5 1.51.5 22 5656 22 17.217.2 발명예3Inventory 3 1717 1212 2.52.5 2.52.5 6565 1One 15.715.7 발명예4Honorable 4 1515 1919 2.52.5 2.52.5 6060 1One 15.715.7 발명예5Inventory 5 1515 2020 1One 33 6060 1One 19.019.0 발명예6Inventory 6 1919 1818 33 1.51.5 5757 1.51.5 15.715.7 발명예7Honorable 7 1515 1818 44 1One 6161 1One 15.715.7 발명예8Inventive Example 8 1515 1818 33 1One 6262 1One 19.019.0 발명예9Proposition 9 1616 1818 1One 33 6060 22 15.715.7 발명예10Inventory 10 1616 1818 1One 44 6060 1One 15.715.7 발명예11Exhibit 11 2020 1818 22 33 5656 1One 15.715.7 발명예12Inventory 12 1818 1313 1One 33 6464 1One 19.019.0 발명예13Inventory 13 2020 1616 22 22 5858 22 15.715.7 발명예14Inventory 14 1919 1515 22 22 6060 22 15.715.7 비교예1Comparative Example 1 2828 10.510.5 1.51.5 22 56.556.5 1.51.5 19.019.0 비교예2Comparative Example 2 1212 1717 1.51.5 22 6565 2.52.5 15.715.7 비교예3Comparative Example 3 2424 88 33 33 6060 22 11.511.5 비교예4Comparative Example 4 1515 2222 33 33 5555 22 11.511.5 비교예5Comparative Example 5 1919 1818 0.50.5 22 58.558.5 22 21.221.2 비교예6Comparative Example 6 1515 1818 66 1One 5959 1One 11.511.5 비교예7Comparative Example 7 2222 1818 1One 0.50.5 57.557.5 1One 39.039.0 비교예8Comparative Example 8 1616 1616 1One 66 6060 1One 11.511.5 비교예9Comparative Example 9 1515 1010 22 33 6868 22 13.313.3 비교예10Comparative Example 10 1818 12.512.5 1.51.5 33 6363 22 14.414.4 비교예11Comparative Example 11 17.517.5 1818 2.82.8 2.12.1 58.158.1 1.51.5 14.614.6 비교예12Comparative Example 12 1818 1616 2.82.8 1One 61.261.2 1One 19.819.8 비교예13Comparative Example 13 17.517.5 1818 1.51.5 1.51.5 6060 1.51.5 21.221.2 비교예14Comparative Example 14 2222 1919 22 1One 5555 1One 24.024.0 비교예15Comparative Example 15 1717 10.510.5 44 55 6161 2.52.5 7.77.7 비교예16Comparative Example 16 15.515.5 1313 44 2.52.5 6363 22 10.810.8

* 상기 표 2에서 합금제는 합금제 전중량에 대해 Mn: 20~35%, Fe: 10~25%, Si: 1~5%, Cr: 40~55%, Nb: 5~10%를 포함함* The alloying agent in Table 2 includes Mn: 20 to 35%, Fe: 10 to 25%, Si: 1 to 5%, Cr: 40 to 55%, and Nb: 5 to 10% based on the total weight of the alloy. box

** 상기 표 2에서 고착제외에 불가피한 불순물을 포함함** Table 2 contains inevitable impurities in addition to the fixing agent

*** 상기 수식 값은 (금속탄산염+금속불화물+합금제)/(탈산제+고착제+슬래그형성제)의 값임
*** The above formula is a value of (metal carbonate + metal fluoride + alloying agent) / (deoxidizer + fixing agent + slag forming agent)

한편, 상기 표 2에서, 금속탄산염, 금속불화물, 슬래그형성제 및 탈산제의 함량을 하기 표 3에 상세히 나타내었다.
On the other hand, in Table 2, the contents of the metal carbonate, metal fluoride, slag forming agent and deoxidizer are shown in Table 3 in detail.

구분division 금속탄산염Metal carbonate 금속불화물Metal fluoride 슬래그형성제Slag forming agent 탈산제Deoxidizer CaCO3 CaCO 3 MgCO2 MgCO 2 BaCO3 BaCO 3 Li2CO3 Li 2 CO 3 CaF2 CaF 2 BaF2 BaF 2 MgF2 MgF 2 K2SiF6 K 2 SiF 6 TiO2 TiO 2 SiO2 SiO 2 Al2O3 Al 2 O 3 ZrO2 ZrO 2 AlAl MgMg TiTi 발명예1Inventory 1 88 88 -- -- 66 66 33 3.53.5 22 -- -- -- 1.51.5 -- -- 발명예2Inventive Example 2 1212 -- 1212 -- 33 66 5.55.5 -- -- 0.50.5 1One -- -- 22 -- 발명예3Inventory 3 55 1212 -- -- 22 44 22 44 -- -- -- 2.52.5 -- -- 2.52.5 발명예4Honorable 4 -- -- 1515 -- 66 77 66 -- 1One -- 1.51.5 -- 1.51.5 1One -- 발명예5Inventory 5 -- 1515 -- -- 1313 -- -- 77 -- -- 1One -- -- 1.51.5 1.51.5 발명예6Inventory 6 1919 -- -- -- 66 -- 66 66 1One 22 -- -- -- 1.51.5 -- 발명예7Honorable 7 -- -- -- 1515 66 66 -- 66 1One -- -- 33 1One -- -- 발명예8Inventive Example 8 55 -- 1010 -- 1818 -- -- -- -- 1.51.5 -- 1.51.5 -- 1One -- 발명예9Proposition 9 -- 88 -- 88 1818 -- -- -- 1One -- -- -- -- 1.51.5 1.51.5 발명예10Inventory 10 -- 88 88 -- -- 1818 -- -- -- 1One -- -- -- 22 22 발명예11Exhibit 11 1010 -- 1010 -- -- 66 66 66 -- -- 1One 1One 1.51.5 1.51.5 -- 발명예12Inventory 12 -- 99 -- 99 -- -- -- 1313 -- 1One -- -- 1One -- 22 발명예13Inventory 13 -- 1010 -- 1010 -- -- 1616 -- 1One -- 1One -- -- -- 22 발명예14Inventory 14 55 55 99 -- 55 55 55 -- -- 1One 1One -- 22 -- -- 비교예1Comparative Example 1 1212 -- -- 1616 -- 5.55.5 -- 55 -- -- -- 1.51.5 -- 1One 1One 비교예2Comparative Example 2 66 -- -- 66 1010 -- 77 -- 1One 0.50.5 -- -- -- -- 22 비교예3Comparative Example 3 -- 1212 -- 1212 -- 44 -- 44 1.51.5 1.51.5 -- -- 1.51.5 -- 1.51.5 비교예4Comparative Example 4 -- -- 1515 -- 1616 66 -- -- -- 1One 0.50.5 1.51.5 -- 33 -- 비교예5Comparative Example 5 -- -- -- 1919 -- 1818 -- -- -- -- 0.50.5 -- -- 1One 1One 비교예6Comparative Example 6 1515 -- -- -- 1818 -- -- -- 22 22 1One 1One -- 1One -- 비교예7Comparative Example 7 -- 2222 -- -- 1818 -- -- -- -- 1One -- -- 0.50.5 -- -- 비교예8Comparative Example 8 -- -- 1616 -- 1616 -- -- -- -- 0.50.5 -- 0.50.5 33 -- 33 비교예9Comparative Example 9 -- -- -- 1515 -- -- 1010 -- 22 -- -- -- 1.51.5 1.51.5 -- 비교예10Comparative Example 10 -- 66 66 66 -- -- -- 12.512.5 -- 1.51.5 -- -- 1One 1One 1One 비교예11Comparative Example 11 1212 -- 5.55.5 -- -- -- 1818 -- -- 1.51.5 1.31.3 -- 0.60.6 1.51.5 -- 비교예12Comparative Example 12 66 66 66 -- -- 1616 -- -- -- 0.50.5 0.80.8 1.51.5 -- 1One -- 비교예13Comparative Example 13 1212 -- -- 5.55.5 99 -- 99 -- 1One -- -- 0.50.5 -- 1.51.5 -- 비교예14Comparative Example 14 2020 -- 22 -- 1010 -- 99 -- 1One 1One -- -- -- -- -- 비교예15Comparative Example 15 44 44 44 55 10.510.5 -- -- -- -- 22 22 -- -- 22 33 비교예16Comparative Example 16 5.55.5 55 55 -- -- 33 1010 -- -- 1One 1.51.5 1.51.5 1One 1One 0.50.5

구분division 용접작업성Welding workability 내균열성Crack resistance 아크성Arc castle 비드외관Bead Appearance 슬래그유동성Slag fluidity 슬래그박리성Slag peeling 용융성Melting ability 용적이행Volumetric 종합Synthesis 발명예1Inventory 1 55 55 55 55 55 44 2929 -- 발명예2Inventive Example 2 55 55 44 55 55 44 2828 -- 발명예3Inventory 3 44 55 55 55 33 55 2727 -- 발명예4Honorable 4 55 44 44 44 44 44 2525 -- 발명예5Inventory 5 55 44 44 55 33 55 2626 -- 발명예6Inventory 6 44 44 55 55 44 55 2727 -- 발명예7Honorable 7 55 44 55 55 44 55 2828 -- 발명예8Inventive Example 8 55 55 44 44 33 55 2626 -- 발명예9Proposition 9 55 33 33 55 55 55 2626 -- 발명예10Inventory 10 55 33 55 55 55 55 2828 -- 발명예11Exhibit 11 44 44 44 44 55 55 2626 -- 발명예12Inventory 12 55 33 55 55 55 55 2828 -- 발명예13Inventory 13 44 55 55 44 44 44 2626 -- 발명예14Inventory 14 55 33 33 55 55 55 2626 -- 비교예1Comparative Example 1 22 33 1One 44 22 22 1414 -- 비교예2Comparative Example 2 44 33 44 44 55 44 2424 균열발생Cracking 비교예3Comparative Example 3 22 1One 1One 22 44 55 1515 -- 비교예4Comparative Example 4 22 22 22 1One 33 33 1313 -- 비교예5Comparative Example 5 22 22 1One 1One 22 44 1212 -- 비교예6Comparative Example 6 33 33 1One 22 55 55 1919 균열발생Cracking 비교예7Comparative Example 7 1One 33 33 33 1One 33 1414 균열발생Cracking 비교예8Comparative Example 8 22 33 22 22 33 44 1616 -- 비교예9Comparative Example 9 33 33 22 22 33 33 1616 -- 비교예10Comparative Example 10 55 22 22 22 55 55 2121 -- 비교예11Comparative Example 11 33 33 1One 1One 33 33 1414 -- 비교예12Comparative Example 12 44 44 22 22 44 44 2020 -- 비교예13Comparative Example 13 22 44 33 44 1One 55 1919 -- 비교예14Comparative Example 14 1One 44 33 33 22 44 1717 -- 비교예15Comparative Example 15 55 33 22 1One 33 33 1717 -- 비교예16Comparative Example 16 33 33 22 22 44 44 1818 --

상기 표 2 내지 4로부터 알 수 있듯이, 본 발명의 범위를 만족하는 발명예는 모두 우수한 용접작업성과 내균열성을 확보하는 것을 알 수 있다.As can be seen from Tables 2 to 4, it can be seen that all the invention examples satisfying the scope of the present invention ensure excellent welding workability and crack resistance.

그러나, 금속탄산염의 함량이 본 발명를 초과하는 비교예 1은 용접작업성이 열악한 것을 알 수 있으며, 본 발명 범위에 미치지 못하는 비교예 2의 경우에는 균열이 발생하는 것을 확인할 수 있다.However, in Comparative Example 1 in which the content of the metal carbonate exceeds the present invention, it can be seen that the weldability is poor, and in Comparative Example 2, which does not fall within the scope of the present invention, it can be confirmed that cracking occurs.

한편, 금속불화물의 함량이 본 발명의 범위를 벗어나고, 수식의 값이 본 발명에 미치지 못하는 비교예 3 및 4는 용접작업성이 열악한 것을 알 수 있다. 또한, 슬래그 형성제 또는 탈산제 함량 및 수식의 값이 본 발명의 범위를 벗어난 비교예 5 내지 8의 경우에는 본 발명에서 요구하는 용접작업성을 만족하지 못하고, 균열이 발생하는 경우도 발생하는 것을 확인할 수 있다. 또한, 합금제의 함량이 본 발명의 범위를 벗어난 비교예 9의 경우에도 본 발명에서 요구한 용접작업성을 확보하지 못함을 알 수 있다.
On the other hand, the content of the metal fluoride is out of the scope of the present invention, Comparative Examples 3 and 4 in which the value of the formula does not reach the present invention can be seen that the poor workability. In addition, in the case of Comparative Examples 5 to 8 in which the slag forming agent or the deoxidizer content and the value of the formula are out of the range of the present invention, the welding workability required by the present invention is not satisfied, and it is confirmed that a crack occurs. Can be. In addition, it can be seen that even in the case of Comparative Example 9 in which the content of the alloy agent is outside the scope of the present invention, welding workability required by the present invention cannot be secured.

한편, 조성의 성분 함량은 본 발명의 범위를 만족하지만, (금속탄산염+금속불화물+합금제)/(탈산제+고착제+슬래그형성제)의 값이 본 발명의 범위를 벗어난 비교예 10 내지 16의 경우에서는 본 발명에서 요구되는 용접작업성을 얻기 어려운 점이 있음을 확인할 수 있다.On the other hand, although the component content of the composition satisfies the scope of the present invention, the values of (metal carbonate + metal fluoride + alloying agent) / (deoxidant + fixing agent + slag forming agent) is outside the scope of the present invention Comparative Examples 10 to 16 In this case, it can be confirmed that there is a difficulty in obtaining weldability required in the present invention.

Claims (1)

93중량% 이상의 니켈로 이루어진 고순도 니켈 심선에 피복제를 도포하여 이루어진 니켈기 고크롬 합금용 피복 아크 용접봉에 있어서,
상기 피복제는 중량%로,
CaCO3, MgCO3, BaCO3 및 Li2CO3 로 이루어진 그룹에서 선택된 1종 이상인 금속탄산염 15~25%;
CaF2, BaF2, MgF2 및 K2SiF6 로 이루어진 그룹에서 선택된 1종 이상인 금속불화물 10~20%;
Al, Mg 및 Ti 로 이루어진 그룹에서 선택된 1종 이상인 탈산제 1~4%;
Mn, Fe, Si, Cr 및 Nb 을 포함하는 합금제 55~65%;
TiO2, ZrO2, SiO2 및 Al2O3으로 이루어진 그룹에서 선택된 1종 이상인 슬래그 형성제 1~4%;
고착제 1~3%; 및 나머지는 불가피한 불순물을 포함하고,
(금속탄산염+금속불화물+합금제)/(탈산제+고착제+슬래그형성제)의 값이 15~19인 것을 만족하는 니켈기 고크롬 합금용 피복 아크 용접봉.In the coating arc welding rod for nickel-based high chromium alloy formed by applying a coating material to a high purity nickel core wire composed of 93 wt% or more nickel,
The coating agent in weight percent,
15-25% of one or more metal carbonates selected from the group consisting of CaCO 3 , MgCO 3 , BaCO 3 and Li 2 CO 3 ;
10-20% of at least one metal fluoride selected from the group consisting of CaF 2 , BaF 2 , MgF 2 and K 2 SiF 6 ;
1% to 4% deoxidizer selected from the group consisting of Al, Mg and Ti;
55 to 65% of an alloy containing Mn, Fe, Si, Cr, and Nb;
1 to 4% of a slag forming agent selected from the group consisting of TiO 2 , ZrO 2 , SiO 2 and Al 2 O 3 ;
1 to 3% binder; And the rest include unavoidable impurities,
A coated arc welding rod for nickel-based high chromium alloys which satisfies the value of (metal carbonate + metal fluoride + alloy) / (deoxidant + fixing agent + slag forming agent) of 15 to 19.
KR1020120013557A 2012-02-10 2012-02-10 Covered electrode for nickel based high chromium alloy welding KR101311794B1 (en)

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