CS228354B1 - Welding powder for welding under flux into narrow bevel - Google Patents

Welding powder for welding under flux into narrow bevel Download PDF

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Publication number
CS228354B1
CS228354B1 CS120782A CS120782A CS228354B1 CS 228354 B1 CS228354 B1 CS 228354B1 CS 120782 A CS120782 A CS 120782A CS 120782 A CS120782 A CS 120782A CS 228354 B1 CS228354 B1 CS 228354B1
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CS
Czechoslovakia
Prior art keywords
weight
welding
powder
molten mixture
manganese
Prior art date
Application number
CS120782A
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Czech (cs)
Slovak (sk)
Inventor
Eduard Ing Csc Pikna
Original Assignee
Pikna Eduard
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 Pikna Eduard filed Critical Pikna Eduard
Priority to CS120782A priority Critical patent/CS228354B1/en
Priority to CH77383A priority patent/CH659206A5/en
Priority to DE19833305949 priority patent/DE3305949A1/en
Priority to AT0058783A priority patent/AT378494B/en
Publication of CS228354B1 publication Critical patent/CS228354B1/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
    • B23K35/362—Selection of compositions of fluxes
    • 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
    • B23K35/361—Alumina or aluminates

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

Abstract

The invention relates to a welding powder for submerged-arc narrow-gap welding which can be prepared by remelting a dry mixture composed of 2.5 to 8% by weight of coarse sand, 24 to 34% by weight of aluminium oxide, 5 to 12% by weight of zirconium concentrate, 9 to 17% by weight of calcium carbonate, 25 to 34% by weight of fluoride, 2 to 4% by weight of potash, 3 to 8% by weight of manganese ore or ferro manganese together, 6 to 11% by weight of kaolin, adding 1 to 2% by weight of aluminium powder to the molten mixture shortly before decanting, pouring the molten mixture into water, in which process it becomes granular, drying and grinding to the required particle size. The novel welding powder is particularly suitable for welding pressure vessels and apparatuses used in the chemical industry and in power stations.

Description

Vynález sa týká strojárenskej technologie. Vynález rieši chemické zloženie zváracieho prášku, ktorý má vhodné technologické a formovacie vlastnosti.The invention relates to engineering technology. The invention solves the chemical composition of the welding powder having suitable technological and forming properties.

Podstata vynálezu spočívá v chemickom zložení zváracieho prášku, ktorý je pripravitelný přetavením suchej zmesi, obsahujúcej podlá hmotnosti 2,5 až 8 % křemičitého piesku, 24 až 34 % kysličníka hlinitého, 5 až 12 % zirkónového koncentrátu, 9 až 19 % uhličitanu -vápenatého, 25 až 34 % kazivca, 2 až 4 % potaše, 3 až 8 % mangánovej rudy alebo feromangánu spolu, 6 až 11 % kaolínu a 1 až 2 % hliníkového prášku, ktorý sa přidává do roztavenej zmesi tesne před odlievaním. Roztavená zmes sa odlieva do vody, pričom sa granuluje a potom suší, osieva a melie na požadované zrnenie.SUMMARY OF THE INVENTION The present invention is based on the chemical composition of a welding powder which is obtainable by remelting a dry mixture containing by weight 2.5 to 8% silica sand, 24 to 34% alumina, 5 to 12% zirconium concentrate, 9 to 19% calcium carbonate, 25 to 34% fluorspar, 2 to 4% potash, 3 to 8% manganese ore or ferro-manganese together, 6 to 11% kaolin and 1 to 2% aluminum powder to be added to the molten mixture just prior to casting. The molten mixture is poured into water, granulated and then dried, sieved and ground to the desired grain size.

Zvárací prášok podlá vynálezu je vhodný najma na zváranie tlakových nádob, zariadení chemického a energetického priemyslu.The welding powder according to the invention is particularly suitable for welding pressure vessels, chemical and power industry equipment.

228334228334

Vynález sa týká zváracieho prášku pře automatické zváranie pod tavivom ocelí váčších hrúbok do úzkého a hlbokého úkosu.The invention relates to welding powder for automatic welding under fusion steels of larger thicknesses into narrow and deep bevels.

Pre zváranie ocelí velkých hrúbok je výhodná úprava zváracích hrán tak, aby sa vytvořil úzký úkos. Tento sposob zvárania je výhodný najma z hl'adiska ekonomického, pretože prináša velké úspory na přídavných materiáloch, najma však na zváracom čase. Tento sposob zvárania kladie velké nároky na zváracie tavivo po stránke technologických a formovacích vlastností. Do úzkého úkosu nie je možné použit běžné zváracie prášky, s ktorými sa nedosahujú požadované technologické a formovacie vlastnosti, najma 1’ahká odstránitelnosť trosky, ako i hladké formovanie húsenky. Sú známe však i špeciálne zváracie prášky, ktoré vykazujú priaznivé technologické a formovacie vlastnosti, avšak s týmito zváracími práškami sa zase nedosahujú požadované metalurgické, ako i mechanické vlastnosti zvarového kovu, menovite vrubová húževnatosť. Tieto vlastnosti sú nutné např. pri zváraní tlakových nádob, zariadení chemického a energetického priemyslu a podobné.For welding large-thickness steels, it is advantageous to modify the welding edges so as to form a narrow bevel. This method of welding is advantageous, in particular from an economic point of view, since it brings great savings on filler materials, but in particular on welding time. This welding process places great demands on the welding flux in terms of technological and forming properties. It is not possible to use conventional welding powders which do not achieve the required technological and forming properties, in particular the low slag removability as well as the smooth forming of the bead. However, special welding powders are also known which exhibit favorable technological and forming properties, but with these welding powders the desired metallurgical and mechanical properties of the weld metal, namely notch toughness, are not achieved. These properties are necessary e.g. welding of pressure vessels, chemical and energy industry equipment and the like.

Tieto nedostatky do značnej miery odstraňuje zvárací prášok podl'a vynálezu, ktorý je pripraviteTný přetavením suchej zmesi, obsahujúcej podlá hmotnosti 2,5 až 8 % křemičitého piesku, 24 až 34 % kysličníka hlinitého, 5 až 12 % zirkónového koncentrátu, 9 až 17 % uhličitanu vápenatého, 25 až 34 °/o kazivca, 2 až 4 % potaše, 3 až 8 % mangánovej rudy alebo feromangánu spolu, 6 až 11 percent kaolínu a 1 až 2 % hliníkového prášku, ktorý sa přidává do roztavenej zmesi tesne před odlievaním. Roztavená zmes sa odlieva do vody, pričom sa granuluje a potom ďa-lej suší, osieva a melie na požadované zrnenie.These drawbacks are largely eliminated by the welding powder according to the invention, which is obtainable by remelting a dry mixture containing by weight 2.5 to 8% silica sand, 24 to 34% alumina, 5 to 12% zirconium concentrate, 9 to 17% calcium carbonate, 25-34% fluorspar, 2-4% potash, 3-8% manganese ore or ferro-manganese together, 6-11% kaolin and 1-2% aluminum powder which is added to the molten mixture just prior to casting. The molten mixture is poured into water, granulated and then dried, sieved and ground to the desired grain size.

Zvárací prášok podlá vynálezu má priaznivé metalurgické pósobenie na zvarový kov a zabezpečuje dosiahnuť požadované mechanické vlastnosti zvarového kovu, menovite vrubovú húževnatosť, pričom vykazuje velmi dobré technologické a formovacie vlastnosti, to znamená kl'udné horenie oblúka a fahkú a samovofnú odstránitefnosť trosky a rovnoměrné a hladké formovanie húsenice. Zabezpečenie dobrých mechanických vlastnostní zvarového kovu, najma vrubovej húževnatosti, sa dosiahne vďaka priaznivému poměru bázických a kyslých zložiek v suchej zmesi zváracieho prášku.The welding powder according to the invention has a favorable metallurgical effect on the weld metal and provides the desired mechanical properties of the weld metal, namely notched toughness, and exhibits very good technological and forming properties, i.e. smooth arc burn and light and self-cleaning slag removability. molding caterpillar. Ensuring good mechanical properties of the weld metal, in particular notch toughness, is achieved due to the favorable ratio of basic and acidic components in the dry welding powder mixture.

So zváracím práškom, ktorý bol zhotovený podlá vynálezu přetavením suchej zmesi, ktorá sa skladala z 5 % kysličníka křemičitého, 32 % kysličníka hlinitého, 7 %. zirkónového koncentrátu, 12 °/o uhličitanu vápenatého a 26 % kazivca, 3 % potaše, 6 % mangánovej rudy a 1 % feromangánu, 7 % kaolínu a s prídavkom 1,5 % hliníkového prášku do roztavenej zmesi, po přetavení bolo zloženie následovně, 9,7 °/o hmot, kysličníka křemičitého, 41,5 percenta hmotnostného kysličníka hlinitého, 6,9 peircent hmotnostného kysličníka zirkoničitého, 19,8 percent hmot, kysličníka vápenatého, 16,8 % hmot, fluoridu vápenatého, 1,5 % kysličníka sodného a draselného spolu, 1,6 % hmot, kysličníka mangánatého, 2,2 % hmot, kysličníka horečnatého, sa dosiahli v kombinácii s nelegovaným mangánovým drótom (1,5 °/o Mn] následovně hodnoty vrúbovej húževnatosti zvarového kovu:With a welding powder made according to the invention by remelting a dry mixture consisting of 5% silica, 32% alumina, 7%. zirconium concentrate, 12% calcium carbonate and 26% fluorspar, 3% potash, 6% manganese ore and 1% ferro-manganese, 7% kaolin and with the addition of 1.5% aluminum powder to the molten mixture, after remelting the composition was 9, 7% by weight, silica, 41.5% by weight alumina, 6.9% by weight zirconium oxide, 19.8% by weight, calcium oxide, 16.8% by weight, calcium fluoride, 1.5% sodium oxide and Potassium total, 1.6 wt.%, manganese oxide, 2.2 wt.%, magnesium oxide, were achieved in combination with the unalloyed manganese wire (1.5 ° / o Mn) as follows:

130 Jcm“2 pri 20 °C a 50 Jcm2 pri 60 °C.130 Jcm 2 at 20 ° C and 50 Jcm 2 at 60 ° C.

So zváracím práškom, ktorý bol vyrobený přetavením suchej zmesi o zložení 6 % křemičitého piesku, 28 % kysličníka hlinitého, 11 % zirkónového koncentrátu, 15 °/o uhličitanu vápenatého, 27 % kazivca, 2 % potaše, 5,5 % mangánovej rudy a feromangánu, 6,5 % kaolínu a 1,8 % hliníkového prášku přidaného do roztavenej zmesi, po přetavení ktorej bolo zloženie následovně, 10,4 pere. hmot, kysličníka křemičitého, 37,7 % hmot, kysličníka hlinitého, 10,6 % hmot, kysličníka zirkoničitého, 21,1 % hmot, kysličníka vápenatého, 17,1 % hmot, fluoridu vápenatého, 1,2 % hmot, kysličníka sodného a draselného spolu, 1,1 % hmot, kysličníka mangánatého a 1,5 % hmot, kysličníka horečnatého, sa v kombinácii s nízkolegovaným drótom typu 1 % mangánu, 1 % niklu a 0,5 % molybdénu dosiahli následovně hodnoty vrubových húževnatosti:With welding powder produced by remelting dry mix of 6% silica sand, 28% alumina, 11% zirconium concentrate, 15% calcium carbonate, 27% fluorspar, 2% potash, 5.5% manganese ore and ferro-manganese , 6.5% kaolin and 1.8% aluminum powder added to the molten mixture, after remelting, the composition was as follows, 10.4 washes. % by weight, silica, 37.7% by weight, alumina, 10.6% by weight, zirconia, 21.1% by weight, calcium oxide, 17.1% by weight, calcium fluoride, 1.2% by weight, sodium oxide and Potassium total, 1.1 wt% manganese oxide and 1.5 wt% magnesium oxide, in combination with low alloyed 1% manganese wire, 1% nickel and 0.5% molybdenum, achieved the following notch toughness values:

140 Jcm2 pri 20 °C a 90 Jcm2 pri —60 °C.140 Jcm 2 at 20 ° C and 90 Jcm 2 at -60 ° C.

Claims (3)

PREDMETSUBJECT Zvárací prášok na zváranie pod tavivom do úzkého úkosu, pripravitefný přetavením suchej zmesi, obsahujúcej podlá hmotnostiWelding powder for fusion welding to a narrow bevel, prepared by remelting a dry mixture containing by weight 2,5 až 8 % křemičitého piesku, 24 až 34 % kysličníka hlinitého, 5 až 12 % zirkónového koncentrátu, 9 až 17 % uhličitanu vápenatého, 25 až 34 % kazivca, 2 až 4 % potaše,2.5 to 8% silica sand, 24 to 34% alumina, 5 to 12% zirconium concentrate, 9 to 17% calcium carbonate, 25 to 34% fluorspar, 2 to 4% potash, VYNALEZUWe claim: 3 až 8 % mangánovej rudy alebo feromangánu spolu, 6 až 11 °/o kaolínu a 1 až 2 % hliníkového prášku, přidávaného do roztavenej zmesi tesne před odlievaním, roztavená zmes sa odlieva do vody, pričom sa granuluje, potom suší a melie na požadované zrnenie.3 to 8% manganese ore or ferro-manganese together, 6 to 11% kaolin and 1 to 2% aluminum powder added to the molten mixture just prior to casting, the molten mixture is poured into water, granulated, then dried and milled to the desired grain.
CS120782A 1982-02-22 1982-02-22 Welding powder for welding under flux into narrow bevel CS228354B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CS120782A CS228354B1 (en) 1982-02-22 1982-02-22 Welding powder for welding under flux into narrow bevel
CH77383A CH659206A5 (en) 1982-02-22 1983-02-11 PROCESS FOR THE MANUFACTURE OF WELDING FLUX FOR UNDER ARC NARROW GAP WELDING.
DE19833305949 DE3305949A1 (en) 1982-02-22 1983-02-21 Welding powder for submerged-arc narrow-gap welding
AT0058783A AT378494B (en) 1982-02-22 1983-02-21 METHOD FOR PRODUCING A WELDING POWDER FOR SUB-POWDER NARROW GAP WELDING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS120782A CS228354B1 (en) 1982-02-22 1982-02-22 Welding powder for welding under flux into narrow bevel

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CS228354B1 true CS228354B1 (en) 1984-05-14

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AT (1) AT378494B (en)
CH (1) CH659206A5 (en)
CS (1) CS228354B1 (en)
DE (1) DE3305949A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105436744B (en) * 2016-01-04 2018-01-19 武汉铁锚焊接材料股份有限公司 A kind of high-strength bridge steel Q500qE welding welding rods

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT207195B (en) * 1957-04-03 1960-01-25 Union Carbide Corp Powdered magnetic welding agent
US3424626A (en) * 1965-01-05 1969-01-28 Union Carbide Corp Low silica welding composition
DE1925564A1 (en) * 1969-05-20 1970-12-03 Inst Elektroswarki Patona Ceramic flux for arc welding of low-carbon - and low-alloy steels
US3663313A (en) * 1970-06-15 1972-05-16 Union Carbide Corp Welding flux composition
IT1063084B (en) * 1975-07-30 1985-02-11 Soudure Autogene Elect AGGLOMERATED CASTING ELEMENTS FOR AUTOMATIC ARC WELDING OF COMMON OR SLIGHTLY ALLOY STEELS
DD139969A3 (en) * 1978-06-08 1980-02-06 Edgar Hoepstein MELT WELDING POWDER FOR UP WELDING

Also Published As

Publication number Publication date
DE3305949A1 (en) 1983-09-01
CH659206A5 (en) 1987-01-15
AT378494B (en) 1985-08-12
ATA58783A (en) 1985-01-15

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