SU935236A1 - Flux for electro-slag welding - Google Patents

Flux for electro-slag welding Download PDF

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Publication number
SU935236A1
SU935236A1 SU782642547A SU2642547A SU935236A1 SU 935236 A1 SU935236 A1 SU 935236A1 SU 782642547 A SU782642547 A SU 782642547A SU 2642547 A SU2642547 A SU 2642547A SU 935236 A1 SU935236 A1 SU 935236A1
Authority
SU
USSR - Soviet Union
Prior art keywords
welding
flux
fluoride
external magnetic
magnetic field
Prior art date
Application number
SU782642547A
Other languages
Russian (ru)
Inventor
Анатолий Николаевич Сафонников
Анатолий Владимирович Антонов
Original Assignee
Ордена Ленина И Ордена Трудового Красного Знамени Институт Электросварки Им.Е.О.Патона
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ордена Ленина И Ордена Трудового Красного Знамени Институт Электросварки Им.Е.О.Патона filed Critical Ордена Ленина И Ордена Трудового Красного Знамени Институт Электросварки Им.Е.О.Патона
Priority to SU782642547D priority Critical patent/SU1055616A1/en
Priority to SU782642547A priority patent/SU935236A1/en
Priority claimed from SU782643248A external-priority patent/SU935234A1/en
Priority to IT24333/79A priority patent/IT1122166B/en
Priority to FR7918110A priority patent/FR2430815A1/en
Priority to CA000331736A priority patent/CA1143800A/en
Application granted granted Critical
Publication of SU935236A1 publication Critical patent/SU935236A1/en
Priority to CA000408441A priority patent/CA1154365A/en

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Classifications

    • 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
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
    • B23K35/3603—Halide salts
    • B23K35/3605—Fluorides
    • 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
    • B23K25/00—Slag welding, i.e. using a heated layer or mass of powder, slag, or the like in contact with the material to be joined
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Arc Welding In General (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Arc Welding Control (AREA)

Abstract

The invention relates to welding, and more particularly to electroslag welding by plate-type electrodes under the harmful influence of external magnetic fields of high magnetic induction. Parts to be welded are brought together to provide a gap between their edges. The relationship between the surface area "B" of the gap, in the area "A" of the horizontal cross section of the welding electrode, and the area "C" of the projection of welding pools surface, is expressed by the ratio: A:B:C = 1 : (1.2 to 1.5) : (2.5 to 4.5). For the given ratios of the areas, the open part of the welding pool surface has such dimensions that the magnetic field of the plate-type electrode neutralizes the action of the strong external magnetic fields and prevents molten metal from splashing.

Description

II

Изобретение относитс  к сварочному производству, в частности к флюcafji дл  электрошлаковой сварки, преимущественно легких металлов в сильных внешних магнитных пол х, используемых в.различных отрасл х промышленности , например, в цветной металлургии дл  электрошлаковой сварки алюминиевых шинопроводов электролизеров ..The invention relates to welding production, in particular, fluxesfes for electroslag welding, mainly light metals in strong external magnetic fields used in various industries, for example, in non-ferrous metallurgy for electroslag welding of aluminum busbars of electrolyzers.

Известен сварочный флюс |.lj, содержащий , вес.%:Known welding flux | .lj, containing, wt.%:

Фтористый литий 20-22 фтористый натрий 28-30 Хлористый калий 15-20 Хлористый натрий 30-35 Наиболее близким по составл ющим ингредиентам к предлагаемому  вл етс  флюс дл  электрошлаковой сварки 2 Lithium fluoride 20-22 sodium fluoride 28-30 Potassium chloride 15-20 Sodium chloride 30-35 The closest in constituent ingredients to the proposed is flux for electroslag welding 2

содержащий вес. containing weight.

20-50 Фтористый литий 30-60 Фтористый натрий lO-itO Фтористый кальций20-50 Lithium fluoride 30-60 Sodium fluoride lO-itO Calcium fluoride

Недостатком известных флюсов  вл етс  их мала  температура кипени , что ведет к образованию в шлаковой ванне сильных турбулентных потоков при сварке во внешнем магнитном поле. Это, в свою очередь, значительно снижает стабильность процесса сварки за счет выплесков шлаковой ванны из зазора, а также предопредел ет по вление шлаковых включений в сварных швах. Кроме того, низка  температура кипени  вход щих в их состав компонентов не позвол ет доводить температуру шлаковой ванны до величины, необходимой дл  полногоA disadvantage of the known fluxes is their low boiling point, which leads to the formation of strong turbulent flows in the slag bath during welding in an external magnetic field. This, in turn, significantly reduces the stability of the welding process due to splashes of the slag bath out of the gap, and also predetermines the appearance of slag inclusions in the welds. In addition, the low boiling point of its constituent components does not allow the temperature of the slag bath to be brought up to the value required for complete

проплавлени  свариваемых кромок.Повышение же теплоемкости шлаковой ванны за счет увеличени  ее объема недопустимо при сварке во внешнем магнитном поле, так как это приводит к увеличению взаимодействи  внешнего магнитного пол  с магнитным полем, создаваемым сварочным током, к нарушению стабильности процесса. penetration of welded edges. Increasing the heat capacity of the slag bath by increasing its volume is unacceptable when welding in an external magnetic field, since this leads to an increase in the interaction of the external magnetic field with the magnetic field created by the welding current, to a violation of process stability.

Целью изобретени   вл етс  создание флюса,обеспечивающего повышение стабильности процесса сварки во внешнем магнитном поле и улучшение пррплавлени  свариваемых кромок .The aim of the invention is to create a flux, which ensures an increase in the stability of the welding process in an external magnetic field and an improvement in the welding of the edges being welded.

Поставленна  цель достигаетс  тем что флюс дополнительно содержит фтористый калий при следующем соотношеНИИ компонентов, весД:The goal is achieved by the fact that the flux additionally contains potassium fluoride at the following ratio of components, weight:

Фтористый литий 60,0-90,0 Фтористый натри  ,0Lithium fluoride 60,0-90,0 Sodium fluoride, 0

Фтористый кальций ..1,0-5,0 Фтористый калий 4,0-15.0 при отношении содержаний фтористого кальци  к фтористому натрию 1:5.Calcium fluoride ..1.0-5.0 Potassium fluoride 4.0-15.0 with a ratio of calcium fluoride to sodium fluoride 1: 5.

Температура кипени  предложенног флюса находитс  в пределах 16001700°С , а плотность - в пределах 2,3-2,5 г/см .The boiling point of the proposed flux is in the range of 16001700 ° C, and the density is in the range of 2.3-2.5 g / cm.

В качестве примеров выполнени  изобретени  можно представить следующие составы предложенного флюса (см. таблицу)As examples of the invention, the following compositions of the proposed flux can be presented (see table)

Claims (2)

Приведенные составы флюсов примен ют -при сварке алюминиевых шин сече нием 1 0x515 мм на следующих режимах сварки: , 3,. Ux« Ц ... 8,0 кА. Все три варианта флюсов позвол ют доводить температуру шлаковой ванны при сварке до необходимой величины, обеспечивающей гарантированное проплавление свариваемых кромок. Технологичность флюса определ етс  по максимально допустимой напр женности внешнего магнитного пол , при которой возможен стабильный процесс электрошлаковой сварки. Первый вариант флюса позвол ет выполн ть .стабильный процесс сварки при напр женности внешнего магнитного пол  до kS , второй - до 55 Ю тл третий - до 60 -10 тд. Учитыва , что напр женность внешнего магнитного пол  в электролизных цехах алюминиевых заводов в сварки не превышает 0 , пред лагаемый флюс позвол ет получать сварные электрические контакты алюми ниевых шинопроводов без дефектов. Применение предлагаемого флюса обеспечивает стабильное протекание электрошлакового процесса при сварке алюминиевых шинопроводов в монтажных услови х, а также гарантированный провар обеих свариваемых кромак. Внедрение предлагаемого флюса на одном алюминиевом заводе позвол ет получить не менее 70000 руб. экономии в год. Формула изобретени  Флюс дл  электрошлаковой сварки преимущественно легких металлов,содержащий фтористый литий, фтористый натрий, фтористый кальций, отличающийс  тем, что, с целью повышени  стабильности процесса при сварке во внешнем магнитном поле и улучшени  проплавлени  свариваемых кромок флюс дополнительно содержит фтористый калий при следующем сротно шении компонентов, вес.%: 60,0-90,0; Фтористый литий 5.0-20,0/ Фтористый натрий Фтористый кальций 1,0-3,0; k,,Q Фтористый калийThe flux compositions given are used for welding aluminum tires with a section of 10 × 515 mm in the following welding modes:, 3 ,. Ux "C ... 8.0 kA. All three flux variants allow the temperature of the slag bath during welding to be reached to the required value, ensuring guaranteed penetration of the edges being welded. The manufacturability of the flux is determined by the maximum allowable intensity of the external magnetic field, at which a stable process of electroslag welding is possible. The first version of the flux allows the stable welding process to be performed at an external magnetic field strength of up to kS, the second — up to 55 Yu t — the third — up to 60-10. Taking into account that the intensity of the external magnetic field in the electrolysis shops of aluminum smelters in welding does not exceed 0, the proposed flux allows to obtain welded electrical contacts of aluminum bus ducts without defects. The use of the proposed flux ensures a stable flow of the electroslag process during the welding of aluminum bus ducts under installation conditions, as well as guaranteed penetration of both welded edges. The introduction of the proposed flux in one aluminum plant allows for at least 70,000 rubles to be received. savings per year. Claims of the Invention Flux for electroslag welding of predominantly light metals containing lithium fluoride, sodium fluoride, calcium fluoride, characterized in that, in order to increase the stability of the process during welding in an external magnetic field and improve the penetration of the edges being welded, the flux additionally contains potassium fluoride at the next route components, wt.%: 60,0-90,0; Lithium fluoride 5.0-20.0 / Sodium fluoride Calcium fluoride 1.0-3.0; k ,, Q Potassium fluoride 5935236659352366 при отношении содержаний фтористого ; 1. Авторское свидетельство СССРwith respect to fluoride content; 1. USSR author's certificate кальци  к фтористому натрию 1:5- N 2793П, «л. В 23 К 35/362, 1369Источники информации,Calcium to sodium fluoride 1: 5- N 2793P, “l. B 23 K 35/362, 1369 Sources of information 2. Авторское свидетельство СССР2. USSR author's certificate прин тые во внимание при экспертизе № , кл. В 29 к 35/362, 19б7taken into account in the examination number, cl. At 29 to 35/362, 19b7
SU782642547A 1978-07-12 1978-07-12 Flux for electro-slag welding SU935236A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SU782642547D SU1055616A1 (en) 1978-07-12 1978-07-12 Flux for electroslag welding
SU782642547A SU935236A1 (en) 1978-07-12 1978-07-12 Flux for electro-slag welding
IT24333/79A IT1122166B (en) 1978-07-12 1979-07-12 PROCEDURE FOR ELECTRIC WELDING UNDER SLOTS WITH FOIL ELECTRODE AND DARKENING USED IN THE WELDING PROCEDURE
FR7918110A FR2430815A1 (en) 1978-07-12 1979-07-12 Submerged arc welding process - using electrodes with cross section thick compared with weld gap
CA000331736A CA1143800A (en) 1978-07-12 1979-07-12 Method of electroslag welding by plate-type electrodes and flux used in the welding process
CA000408441A CA1154365A (en) 1978-07-12 1982-07-29 Method of electroslag welding by plate-type electrodes and flux used in the welding process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SU782643248A SU935234A1 (en) 1978-07-12 1978-07-12 Method of electro-slag welding with plate electrode
SU782642547A SU935236A1 (en) 1978-07-12 1978-07-12 Flux for electro-slag welding

Publications (1)

Publication Number Publication Date
SU935236A1 true SU935236A1 (en) 1982-06-15

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SU782642547A SU935236A1 (en) 1978-07-12 1978-07-12 Flux for electro-slag welding
SU782642547D SU1055616A1 (en) 1978-07-12 1978-07-12 Flux for electroslag welding

Family Applications After (1)

Application Number Title Priority Date Filing Date
SU782642547D SU1055616A1 (en) 1978-07-12 1978-07-12 Flux for electroslag welding

Country Status (4)

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CA (1) CA1143800A (en)
FR (1) FR2430815A1 (en)
IT (1) IT1122166B (en)
SU (2) SU935236A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT375857B (en) * 1980-06-26 1984-09-25 Inst Elektroswarki Patona METHOD FOR ELECTROSHELL WELDING, WELDING POWDER AND DEVICE FOR CARRYING OUT THE METHOD
FR2495981A1 (en) * 1980-12-17 1982-06-18 Inst Elektroswarki Patona Electroslag welding of metals - includes maintaining weld metal in molten state after welding current is switched off

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR895043A (en) * 1942-01-07 1945-01-12 Ig Farbenindustrie Ag Welding process of light metals and light metal alloys
DE1203893B (en) * 1962-10-12 1965-10-28 Hans Von Hofe Dr Ing Electro-slag welding process and application of this process
US3467808A (en) * 1967-01-26 1969-09-16 United States Steel Corp Electroslag welding method for fabricating heavy forgings
FR2048329A5 (en) * 1969-12-29 1971-03-19 Krasnog Lithium-sodium-calcium fluoride flux for - aluminium welding
GB1356761A (en) * 1972-04-13 1974-06-12 Bristol Aerojet Ltd Welding
US3869592A (en) * 1973-06-20 1975-03-04 Paton Boris E Method of electroslag welding or hardfacing

Also Published As

Publication number Publication date
SU1055616A1 (en) 1983-11-23
CA1143800A (en) 1983-03-29
FR2430815A1 (en) 1980-02-08
IT1122166B (en) 1986-04-23
IT7924333A0 (en) 1979-07-12
FR2430815B1 (en) 1984-03-02

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