FR1464775A - Surface treatment process for steel wires which can be used in particular in welding - Google Patents
Surface treatment process for steel wires which can be used in particular in welding Download PDFInfo
- Publication number
- FR1464775A FR1464775A FR39342A FR39342A FR1464775A FR 1464775 A FR1464775 A FR 1464775A FR 39342 A FR39342 A FR 39342A FR 39342 A FR39342 A FR 39342A FR 1464775 A FR1464775 A FR 1464775A
- Authority
- FR
- France
- Prior art keywords
- zinc
- wire
- welding
- surface treatment
- steel wires
- 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.)
- Expired
Links
- 238000003466 welding Methods 0.000 title claims description 9
- 229910000831 Steel Inorganic materials 0.000 title claims description 8
- 239000010959 steel Substances 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 7
- 238000004381 surface treatment Methods 0.000 title description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 24
- 229910052725 zinc Inorganic materials 0.000 claims description 24
- 239000011701 zinc Substances 0.000 claims description 24
- 238000007654 immersion Methods 0.000 claims description 6
- 238000000151 deposition Methods 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 241001180982 Lappula squarrosa Species 0.000 claims 1
- 238000005491 wire drawing Methods 0.000 description 4
- 238000005246 galvanizing Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000000137 annealing Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
- Ropes Or Cables (AREA)
- Metal Extraction Processes (AREA)
- Coating With Molten Metal (AREA)
Description
Procédé de traitement de surface de fils en acier utilisables notamment en soudage.
Le brevet français n[deg] 1.342.173 est relatif à un procédé de traitement de surface de fils en acier utilisables en particulier pour le soudage automatique ou semi-automatique, ainsi qu'aux fils obtenus par ce procédé et à leur application au soudage de l'acier. Il est caractérisé par une opération de dépôt de zinc sur l'acier par voie électrolytique.
La présente invention est également relative à un procédé pour la fabrication de fil zingué pour soudage; elle est caractérisée par le fait que le dépôt de zinc est effectué par immersion dans du zinc fondu, avant la dernière passe de tréfilage.
Dans le brevet cité, il est mentionné que le zingage par immersion dans du zinc fondu ne conviendrait pas pour le soudage, car la forte proportion de zinc rendrait les soudures fragiles et produirait des fumées qui incommoderaient le soudeur. Il a été trouvé qu'en faisant suivre le zingage par immersion d'un tréfilage, ou de plusieurs, on pouvait éviter ces inconvénients tout en profitant du bas prix de revient du zingage par immersion. On peut, en effet, en zinguant du fil suffisamment gros, obtenir après tréfilage un fil revêtu d'une couche suffisamment mince de zinc.
Le dépôt de zinc réalisé avant un certain nombre de tréfilages sert de lubrifiant, ou de couche d'accrochage pour le lubrifiant, ou les deux, lors des passes subséquentes de tréfilage. Il permet d'utiliser des vitesses de tréfilage au moins égales à celles utilisées avec du fil cuivré.
Le dépôt de zinc peut être effectué à n'importe quel stade du tréfilage et même sur du fil machine n'ayant subi aucun tréfilage; avant de déposer le zinc, il faut mettre le métal à nu pour éliminer les oxydes et les souillures.
L'immersion dans un bain de zinc fondu donne une épaisseur de zinc supérieure à celle qu'il est désirable d'avoir sur les fils pour soudage; les tréfilages subséquents réduisent cette épaisseur parce qu'ils entraînent une certaine perte de zinc et en raison de l'accroissement de la surface d'un poids déterminé de fil résultant du tréfilage.
La quantité de zinc à déposer initialement est facilement trouvée par comparaison avec des opérations antérieures similaires et par quelques essais si c'est nécessaire.
L'épaisseur finale de la couche de zinc doit être comprise entre 0,1 et 5 microns; les épaisseurs préférées, pour les diamètres usuels (0,6 à 4 mm) de fil pour soudage, sont comprises entre 0,15 et 3 microns. Le poids de la couche de zinc du fil terminé doit être compris entre 0,04 % et 0,4 % du poids de l'acier, de préférence entre 0,05 % et 0,12 %. Par exemple, on réalise une couche de zinc épaisse de 0,5 à 1 micron pour du fil de 1,2 mm de diamètre.
A titre d'exemple, on peut faire passer par tréfi. lage le diamètre d'un fil d'acier de 2,2 mm à 1,2 mm en passant par les diamètres suivants en mm : 1,98, 1,82, 1,66, 1,52, 1,39, 1,27, les lubri fiants étant ceux couramment employés pour le tréfilage du fil cuivré; dans ces conditions, le tréfilage a fait passer la teneur globale en zinc de 0,11 % à 0,055 %.
Le recuit du fil avant tréfilage peut être effectué par son immersion dans le zinc fondu, en particulier si un simple adoucissement suffit.Process for the surface treatment of steel wires which can be used in particular in welding.
French patent n [deg] 1,342,173 relates to a process for the surface treatment of steel wires which can be used in particular for automatic or semi-automatic welding, as well as to the wires obtained by this process and to their application to welding. steel. It is characterized by an operation of depositing zinc on the steel by electrolytic means.
The present invention also relates to a process for the manufacture of galvanized wire for welding; it is characterized by the fact that the zinc deposit is carried out by immersion in molten zinc, before the last drawing pass.
In the cited patent, it is mentioned that galvanizing by immersion in molten zinc would not be suitable for welding, because the high proportion of zinc would make the welds fragile and would produce fumes which would inconvenience the welder. It has been found that by following the dip galvanizing with a wire drawing, or several, these drawbacks could be avoided while taking advantage of the low cost price of immersion zinc plating. It is in fact possible, by galvanizing sufficiently large wire, to obtain after drawing a wire coated with a sufficiently thin layer of zinc.
The zinc deposition made before a certain number of wire draws serves as a lubricant, or a tack coat for the lubricant, or both, during subsequent wire drawing passes. It makes it possible to use drawing speeds at least equal to those used with copper-plated wire.
The zinc deposition can be carried out at any stage of the drawing and even on wire rod which has not undergone any drawing; Before depositing the zinc, the metal must be exposed to remove oxides and dirt.
Immersion in a bath of molten zinc gives a thickness of zinc greater than that which is desirable on the welding wires; subsequent wire drawing reduces this thickness because they cause a certain loss of zinc and because of the increase in the surface area of a determined weight of wire resulting from the drawing.
The amount of zinc to be deposited initially is easily found by comparison with similar previous operations and by some testing if necessary.
The final thickness of the zinc layer should be between 0.1 and 5 microns; the preferred thicknesses, for the usual diameters (0.6 to 4 mm) of wire for welding, are between 0.15 and 3 microns. The weight of the zinc layer of the finished wire should be between 0.04% and 0.4% of the weight of the steel, preferably between 0.05% and 0.12%. For example, a zinc layer 0.5 to 1 micron thick is produced for wire of 1.2 mm in diameter.
For example, we can pass through trefi. lage the diameter of a steel wire from 2.2 mm to 1.2 mm passing through the following diameters in mm: 1.98, 1.82, 1.66, 1.52, 1.39, 1 , 27, the lubricants being those commonly used for drawing copper-plated wire; under these conditions, the wire drawing increased the overall zinc content from 0.11% to 0.055%.
The annealing of the wire before drawing can be carried out by its immersion in the molten zinc, in particular if a simple softening is sufficient.
Claims (2)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR39342A FR1464775A (en) | 1965-11-23 | 1965-11-23 | Surface treatment process for steel wires which can be used in particular in welding |
ES0333601A ES333601A1 (en) | 1965-11-23 | 1966-11-21 | Procedure for the manufacture of cincado wire for welding. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR39342A FR1464775A (en) | 1965-11-23 | 1965-11-23 | Surface treatment process for steel wires which can be used in particular in welding |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1464775A true FR1464775A (en) | 1967-01-06 |
Family
ID=1582626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR39342A Expired FR1464775A (en) | 1965-11-23 | 1965-11-23 | Surface treatment process for steel wires which can be used in particular in welding |
Country Status (2)
Country | Link |
---|---|
ES (1) | ES333601A1 (en) |
FR (1) | FR1464775A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986007552A1 (en) * | 1985-06-21 | 1986-12-31 | Daiichi, Denko | Method for fabricating a filiform electrode for electro-erosion machining |
FR2689909A1 (en) * | 1992-04-08 | 1993-10-15 | Delot Process Sa | Prodn. of finished galvanised metal products - in an integrated galvanising and drawing installation |
-
1965
- 1965-11-23 FR FR39342A patent/FR1464775A/en not_active Expired
-
1966
- 1966-11-21 ES ES0333601A patent/ES333601A1/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986007552A1 (en) * | 1985-06-21 | 1986-12-31 | Daiichi, Denko | Method for fabricating a filiform electrode for electro-erosion machining |
FR2689909A1 (en) * | 1992-04-08 | 1993-10-15 | Delot Process Sa | Prodn. of finished galvanised metal products - in an integrated galvanising and drawing installation |
Also Published As
Publication number | Publication date |
---|---|
ES333601A1 (en) | 1967-10-01 |
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