DE2365058A1 - Basic low manganese welding powder - is resistant to moisture uptake and prepared by melting and granulating - Google Patents
Basic low manganese welding powder - is resistant to moisture uptake and prepared by melting and granulatingInfo
- Publication number
- DE2365058A1 DE2365058A1 DE2365058A DE2365058A DE2365058A1 DE 2365058 A1 DE2365058 A1 DE 2365058A1 DE 2365058 A DE2365058 A DE 2365058A DE 2365058 A DE2365058 A DE 2365058A DE 2365058 A1 DE2365058 A1 DE 2365058A1
- Authority
- DE
- Germany
- Prior art keywords
- weight
- welding
- bao
- cao
- sio
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 43
- 239000000843 powder Substances 0.000 title claims abstract description 34
- 229910052748 manganese Inorganic materials 0.000 title claims description 4
- 239000011572 manganese Substances 0.000 title claims description 4
- 238000002844 melting Methods 0.000 title description 2
- 230000008018 melting Effects 0.000 title description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title 1
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 3
- 101100496858 Mus musculus Colec12 gene Proteins 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- 229910001514 alkali metal chloride Inorganic materials 0.000 claims 1
- 229910001617 alkaline earth metal chloride Inorganic materials 0.000 claims 1
- XOYLJNJLGBYDTH-UHFFFAOYSA-M chlorogallium Chemical compound [Ga]Cl XOYLJNJLGBYDTH-UHFFFAOYSA-M 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000008187 granular material Substances 0.000 claims 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 6
- 239000011780 sodium chloride Substances 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 4
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 abstract 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910001626 barium chloride Inorganic materials 0.000 abstract 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 abstract 1
- 239000001110 calcium chloride Substances 0.000 abstract 1
- 229910001628 calcium chloride Inorganic materials 0.000 abstract 1
- 235000011148 calcium chloride Nutrition 0.000 abstract 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract 1
- 229910001634 calcium fluoride Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 239000000945 filler Substances 0.000 abstract 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 229910001629 magnesium chloride Inorganic materials 0.000 abstract 1
- 229910001631 strontium chloride Inorganic materials 0.000 abstract 1
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 150000001805 chlorine compounds Chemical class 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- -1 CaCl 2 Chemical class 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
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
- B23K35/3602—Carbonates, basic oxides or hydroxides
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
Description
Basische Schweißpulver für das Unterpulverschweißen ermöglichen bessere mechanische Gütewerte als sauere Schweißpulver, weshalb sie immer stärker zum Einsatz kommen. Mit steigender Basizität nimmt der Anteil an Erdalkalien und Alkalien im Schweißpulver zu, was im allgemeinen zu einer immer größeren Hygroskopizität der Pulver führt.Basic welding fluxes for submerged arc welding allow better mechanical quality values than acidic ones Welding powder, which is why they are used more and more. The proportion increases with increasing basicity Alkaline earths and alkalis in the welding powder increase, which in general leads to greater and greater hygroscopicity the powder leads.
Agglomerierte Pulver, welche durch Zusammenmischen und !Trocknen oder Glühen der feingemahlenen Rohstoffkomponenten erzeugt, werden, neigen besonders stark zur !Feuchtigkeitsaufnähme. Das ist zum einen auf ihren Gehalt an Wasserglas als Bindemittel und zum anderen auf ihre große innere Oberfläche zurückzuführen.Agglomerated powders, which are produced by mixing together and! Drying or glowing the finely ground raw material components are generated, have a particularly strong tendency to absorb moisture. For one thing, that's on theirs Content of water glass as a binding agent and, on the other hand, due to its large inner surface.
Auch gesinterte Pulver haben eine große innere Oberfläche und sind bei entsprechender Basizität hygroskopisch. Sintered powders also have a large internal surface and are hygroscopic if they are appropriately basic.
509827/0451509827/0451
2 3660582 366058
Feuchtes Seliweißpulver bringt Wasserstoff in das Schweißgut,, was "besonders bei Stählen mit höherer Festigkeit zu Rissen führen kann. Gerade für höherfeste Stähle sind gute Kerbsclalagzähigkeiten, wie sie basische gesinterte oder agglomerierte Pulver ermöglichen, besonders τοη Vorteil. Dear Einsatz dieser Schweißpulver zum Schweißen wassers toffempfendlicher Stähle scheiterte bisher am Feuchtigkeitsgehalt· der Pulver oder sie mußten vor dem Schweißen umständlich geglüht werden.Moist seliweiß powder brings hydrogen into the weld metal "which" especially with steels with higher strength Can lead to cracks. For high-strength steels in particular, good notch clalag toughness like those of basic sintered ones or allow agglomerated powders, particularly τοη advantage. Dear use of this welding flux for welding So far, water-sensitive steels have failed due to the moisture content the powder or they had to be inconveniently annealed before welding.
Erschmolzene Schweißpulver haben,üblicherweise ein dichtes Korn. Ihre Oberfläche ist deshalb kleiner als die von agglomerierten oder gesinterten Pulvern. Aus diesem Grund ist die Feuchtigkeitsaufnahme von Schmelzpulvern niedriger als die von agglomerierten oder gesinterten Pulvern gleicher Zusammensetzung. Wenn jedoch die Schmelzpulver zu hohe Gehalte an Er&alkalien und/oder Alkalien und zu niedrige Gehalte an sameren bzw. feuchtigkeitsunempfindlichen Bestandteilen wie SiO9, TiO9 bzw, MnO enthalten, nehmen auch sie Feuchtigkeit aus der Luft auf.Melted welding fluxes have, usually a dense grain. Their surface is therefore smaller than that of agglomerated or sintered powders. For this reason, the moisture absorption of melt powders is lower than that of agglomerated or sintered powders of the same composition. However, if the melting powder contains too high levels of alkalis and / or alkalis and too low levels of solid or moisture-insensitive components such as SiO 9 , TiO 9 or MnO, they too absorb moisture from the air.
Ziel der Entwicklung war es deshalb, Zusammensetzungen von Schweißpulvern zu finden, die so basisch als möglich und trotzdem wesaig feuchtigkeitsempfindlich sind. Darüber hinaus müssen die Susammensetaungen auch gute Schweiß- und Nahtformungseigenschaften haben. Diese elementaren Forderungen sind bei basischen manganarmen Schmelzpulvern nur sehr schwer zu erfüllen. Das dürfte auch der Grund sein, weshalb auf diesem Gebiet bisher kaum Fortschritte erzielt worden sind.The aim of the development was therefore to find compositions of To find welding powders that are as basic as possible and yet wesaig sensitive to moisture. Furthermore the sutures must also have good welding and seam forming properties to have. These elementary requirements are only very high in the case of basic low-manganese melt powders difficult to meet. That is probably the reason why little progress has been made in this area so far are.
509827/0451509827/0451
Es wurden nun erschmolzene basische manganarme Schweißpulver gefunden, welche geringe Feuchtigkeitsempfindlichkeit und gute Schweißeigenschaften haben» Sie bestehen aus folgenden Bestandteilen:There were now melted basic low-manganese welding powders found what low moisture sensitivity and have good welding properties »They pass from the following components:
- 4 5 ü 382 7 /0451- 4 5 over 382 7/0451
Besonders bewährt haben sich folgende Zusammensetzungen:The following compositions have proven particularly useful:
Diese erfindungsgemäßen Zusammensetzungen haben zwar gute Kahtformungseigenschaften, jedoch sind die Schweißergebnisse nicht immer reproduzierbar. Es kommt vor, daß mit dem gleichen Pulver und mit den gleichen Schweißdaten auf der gleichen Maschine nach vielen guten Schweißungen plötzlich unbrauchbare Schweißnähte erhalten werden, überraschenderweise gelingt es durch Zusatz von einigen hundertstel Prozenten bis zu max. 1,5 $ an Chloriden die Schweißeigenschaften so zu stabilisieren, daß bei Wiederholungsschweißungen immer gute Schweißnähte entstehen.Although these compositions according to the invention have good seam forming properties, the welding results are not always reproducible. It happens that with the same powder and with the same welding data on the same machine, after many good welds, suddenly unusable welds are obtained; surprisingly, the welding properties are achieved by adding a few hundredths of a percent up to a maximum of 1.5 $ of chlorides to stabilize so that good weld seams are always produced with repeated welds.
509827/04 51 "5"509827/04 51 " 5 "
Bas Chlorid wird vorzugsweise in !"prm der Alkalichloride NaCl und/oder KCl oder in Porm von Erdalkalichloriden, wie CaCl2J BaCl2, SrCl2 und MgCl2, zugesetzt. Bewährt haben sich erfindungsgemäße Schweißpulver, welche 0,04- - 0,6 Gew.^ NaCl und/oder KCl bzw. 0,04 -1,5 Gew.$ CaCl2 und/oder BaCl2 und/oder SrCl2 und/oder MgCl2 enthalten. Auch Schweißpulver, welche Mischungen der genannten Alkali- und Erdalkaliehloride in Gehaltenybis zu 1,5 Gew.jS aufweisen, zeigen die konstant guten Schweißeigenschaften. The chloride is preferably added in the form of the alkali chlorides NaCl and / or KCl or in the form of alkaline earth chlorides such as CaCl 2, BaCl 2 , SrCl 2 and MgCl 2. Welding powders according to the invention which contain 0.04-0, 6% by weight NaCl and / or KCl or 0.04-1.5% by weight CaCl 2 and / or BaCl 2 and / or SrCl 2 and / or MgCl 2 Alkaline earth chloride in contents of up to 1.5% by weight show the consistently good welding properties.
Ein weiterer unerwarteter Effekt wird durch Eingießen der Schweißpulverschmelzen der erfindungsgemäßen Zusammensetzungen in ¥asser erzielt, üblicherweise wird bei der Herstellung feuchtigkeitsempfindlicher Schweißpulver während des ganzen Erzeugungsprozesses die Berührung mit Wasser überhaupt vermieden, indem die Schmelzen auf eiserne Wannen gegossen und der abgekühlte Schmelzkuchen auf die gewünschte Körnung zerkleinert wird. !Drotz dieser Maßnahme nehmen Schweißpulver der erfindungsgemäßen Zusammensetzungen nach längerer Lagerung an luft bis zu 0,02 Gew. # H2O (bestimmt bei 650° C) auf.Another unexpected effect is achieved by pouring the welding powder melts of the compositions according to the invention into water, usually in the production of moisture-sensitive welding powder, contact with water is avoided at all during the entire production process by pouring the melt onto iron tubs and the cooled melt cake onto the desired grain size is crushed. Despite this measure, welding powders of the compositions according to the invention absorb up to 0.02% by weight of H 2 O (determined at 650 ° C.) after prolonged storage in air.
Völlig überraschend und entgegen der allgemeinen Erfahrung zeigte sich jedoch,-daß durch Zerkleinern der erfindungsgemäßen Schweißpulverschmelzen mit einem Wasserstrahl und anschließendem Trocknen des Produktes ein Schweißpulver erhalten wird, das nach längerem Lagern an Luft nur etwa halb so viel Feuchtigkeit aufnimmt als die auf der eisernen Wanne abgekühlte und anschließend zerkleinerte Ware.Completely surprisingly and contrary to general experience, however, it was found that by comminuting the welding powder melts according to the invention with a water jet and then subsequently Drying the product a welding powder is obtained, which after prolonged storage in air is only about half absorbs as much moisture as the goods cooled on the iron tub and then chopped up.
.509827/0451.509827 / 0451
Ähnliche Verminderungen der Feuchtigkeitsaufnahme erfindungsgemäßer Schweißpulver beim Lagern an Luft wird durch. Zerstäuben der Schweißpulverschmelzen mittels LuJft und/oder Preßluft oder mittels eines rotierenden Tellers erzielt.Similar reductions in the moisture absorption of welding powder according to the invention when stored in air is through. Sputtering the weld flux achieved by means of air and / or compressed air or by means of a rotating plate.
Die erfindungsgemäßen, in der beschriebenen Art hergestellten basischen Schweißpulver haben wegen ihrer geringen Feuchtigkeitsempfindlichkeit und ihren guten Schweißeigenschaften auch Vorteile auf anderen Gebieten der Schweißtechnik außerhalb des Unterpulverschweißens.The basic welding powders according to the invention, produced in the manner described, have because of their low Moisture sensitivity and their good welding properties also have advantages in other areas welding technology outside of submerged arc welding.
Die Schweißpulver können mit Vorteil bei der Herstellung von Hülleniaassen für Elektroden oder für !Füllmassen von Röhrchendraht verwendet werden. Der Prozentgehalt ihres Einsatzes in den Hüllenmassen von Elektroden oder für Füllmassen von Röhrchendraht hängt von der angestrebten Durchschnitts-Zusammensetzung der Hüllenmassen von Elektroden, bzw. der Füllmassen von Röhrchendraht ab.The welding fluxes can be used with advantage in the production of casing materials for electrodes or for filling materials from Tubular wire can be used. The percentage of their use in the shell masses of electrodes or for Fillings of tubular wire depends on the desired Average composition of the covering masses of electrodes or the filling masses of tubular wire.
509827/0 4 51509827/0 4 51
Claims (1)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2365058A DE2365058A1 (en) | 1973-12-28 | 1973-12-28 | Basic low manganese welding powder - is resistant to moisture uptake and prepared by melting and granulating |
| NL7416795A NL7416795A (en) | 1973-12-28 | 1974-12-23 | PROCEDURE FOR THE PREPARATION OF MELTED ANARME, BASIC WELDING POWDERS WITH LOW SENSITIVITY. |
| US05/535,381 US3959031A (en) | 1973-12-28 | 1974-12-23 | Molten basic welding fluxes low in manganese and with low moisture sensitivity |
| IT54726/74A IT1026137B (en) | 1973-12-28 | 1974-12-23 | SUBMERSIBLE ARC WELDING MIXERS AND PROCEDURE FOR PRODUCING THEM |
| CA216,768A CA1032067A (en) | 1973-12-28 | 1974-12-24 | Molten welding fluxes |
| BE151963A BE823898A (en) | 1973-12-28 | 1974-12-27 | BASIC WELDING POWDERS LOW SENSITIVE TO HUMIDITY |
| FR7443036A FR2255992B1 (en) | 1973-12-28 | 1974-12-27 | |
| GB5599374A GB1472889A (en) | 1973-12-28 | 1974-12-30 | Welding fluxes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2365058A DE2365058A1 (en) | 1973-12-28 | 1973-12-28 | Basic low manganese welding powder - is resistant to moisture uptake and prepared by melting and granulating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2365058A1 true DE2365058A1 (en) | 1975-07-03 |
Family
ID=5902188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2365058A Pending DE2365058A1 (en) | 1973-12-28 | 1973-12-28 | Basic low manganese welding powder - is resistant to moisture uptake and prepared by melting and granulating |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE823898A (en) |
| DE (1) | DE2365058A1 (en) |
-
1973
- 1973-12-28 DE DE2365058A patent/DE2365058A1/en active Pending
-
1974
- 1974-12-27 BE BE151963A patent/BE823898A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BE823898A (en) | 1975-06-27 |
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