EP4281605A1 - System and method for providing surface cleaning of steel wire on apparatus used for efficient cleaning before galvanized coating - Google Patents
System and method for providing surface cleaning of steel wire on apparatus used for efficient cleaning before galvanized coatingInfo
- Publication number
- EP4281605A1 EP4281605A1 EP21921532.4A EP21921532A EP4281605A1 EP 4281605 A1 EP4281605 A1 EP 4281605A1 EP 21921532 A EP21921532 A EP 21921532A EP 4281605 A1 EP4281605 A1 EP 4281605A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning
- wire
- anode
- chemical
- dirt
- 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
- 238000004140 cleaning Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000000576 coating method Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 13
- 239000010959 steel Substances 0.000 title claims abstract description 13
- 239000011248 coating agent Substances 0.000 title claims description 11
- 239000003513 alkali Substances 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims description 24
- 239000000314 lubricant Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 238000005246 galvanizing Methods 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 5
- 230000032297 kinesis Effects 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 3
- 229910001414 potassium ion Inorganic materials 0.000 claims description 2
- 229910001415 sodium ion Inorganic materials 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 2
- 229910052802 copper Inorganic materials 0.000 claims 2
- 239000010949 copper Substances 0.000 claims 2
- 230000001419 dependent effect Effects 0.000 claims 2
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 238000000746 purification Methods 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- 239000010410 layer Substances 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- 229910052725 zinc Inorganic materials 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0607—Wires
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/16—Metals
Definitions
- the efficient cleaning system and tank design made by using electrolytic method in parts where surface cleaning is made before galvanize, has a structure which can be applied to the galvanized steel sector.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Electroplating Methods And Accessories (AREA)
- Coating With Molten Metal (AREA)
Abstract
The present invention relates to a system and method for obtaining surface cleaning of steels with the help of alkali electrolytes and electrolytic cleaning method which provides an efficient and perfect surface cleaning system which eliminates the disadvantages of the surface cleaning system used in traditional galvanize coating process.
Description
SYSTEM AND METHOD FOR PROVIDING SURFACE CLEANING OF STEEL WIRE ON APPARATUS USED FOR EFFICIENT CLEANING BEFORE GALVANIZED COATING
TECHNICAL FIELD
The present invention relates to a cleaning system and design which provides wire surface cleaning by using electrolytic method by means of pulsed and non-pulsed electrical current for steel wire; in order to eliminate all surface dirt during pre-cleaning step before galvanized coating of steel wires after cold shaping of wires which are hot rolled and which are heat treated and in order to increase wire surface quality.
PRIOR ART
Hot rolled wires and heat treated wires are frequently produced for cold forming. These wires have to show a perfect performance until they are reduced to the desired wire diameter in order to be passed through pluralities of dies together with lubricants used in the cold shaping process.
In order to provide galvanized coating of the wires, in order to purify from lubricant and surface dirt plastered onto the wire surface and in order to clean the oxide layers formed after heat treatment after reduction to the desired wire diameter, they are dipped into hydrochloric acid, sulfuric acid and phosphoric acid baths.
In this traditional method, because of the production speed of the hot dip galvanizing line, the performance of the cleaning baths is drawn upwardly in a rapid manner for providing formation of galvanized film layer. Thus, in order to be able to form a very rapid galvanizing layer, the amounts of chemicals in the pool must be increased. On the other hand, as a result of the increase of the amount of these chemicals used, a serious dirtiness occurs in the pool. This makes difficult obtaining a successful galvanizing layer and makes difficult the disposal processes of the occurring environmental wastes.
OBJECT OF THE INVENTION
As described above, even though the chemicals in the pool are increased and the bath performances are increased, a continuous and successful galvanized coating process has
not been provided. The present invention eliminates the disadvantages of the traditional cleaning system in the galvanized coating processes, and relates to cleaning system and design which will completely eliminate the dirt on the steel wire surface, in order to eliminate all disadvantages in the process and to bring some additional advantages.
In accordance with a perspective of the present invention; as a result of the studies made, it is considered that the galvanized coating layer quality is very densely correlated with the surface cleaning quality.
The wires are dipped into a strong acid bath before realizing galvanized coating. By means of this method, the lubricants on the wire, the burnt soap residues and the other dirt are tried to be removed from the wire surface. However, by means of this method, as a result of increase of saturation of iron with acid in short time, as the cleaning effect is weakened, the lubricants on the cold shaped wires cannot be cleaned sufficiently within acid.
If the lubricants, the oxide layers and the other dirt cannot be cleaned, insufficient galvanized coating layer occurs. These lubricants prevent adhering of galvanize onto the steel wire surface, and this leads to disqualified end product.
The main object of the present invention is to provide galvanize coating quality with the desired quality by using a new method and new tools.
Another object of the present invention comprises cleaning of the lubricants which exist on the steel wire surface and forming the galvanized coating layer. For this reason, electrolytic cleaning method is used in the cleaning of lubricants on the wire after cold forming. In the electrolytic cleaning method, steel wires are used as cathode, and the other alkali solutions and additive substances are used as electrolyte.
Another object of the present invention comprises that the alkali solution, used as electrolyte in the surface cleaning process used before the galvanized coating layer formation process, comprises 5-30 g/L Na+ ion and 2-30 g/L K+ ion. Cleaning process is realized in the alkali solution where the temperature of the alkali solution temperature is lower than 85eC and where the current densities of steel wires are between 1 and 100 A/dm2 and where the cleaning duration in the solution is between 1 and 50 seconds.
Another object of the present invention is that the harmful effects will be minimized since the concentration used in the present invention is 40-50% lower than the concentration used in
traditional cleaning systems and the disadvantages will be eliminated formed by hydrochloric acid, sulfuric acid and phosphoric acid with high concentration used in traditional galvanizing coated method. Thus, the required cleaning cost for the galvanized coating is reduced by decreasing the amount of hydrochloric acid used when compared with the traditional cleaning system. Since the amount of the used acid decreases, the neutralization costs of the waste acid also decrease. Thus, the damage given to the environment, humans, machine and equipment by the high concentration acid used in the traditional method will be minimized.
Another object of the present invention is to provide protection of the critical values of the pre-process chemical after cleaning and before galvanizing since a more effective cleaning is realized on the wire surface and afterwards to reduce the zinc ash amount in the galvanize furnace which occurs due to residues on the surface.
Another object of the present invention is that the wire surface cleaning capability is more advantageous when compared with traditional cleaning method thanks to the electrolytic cleaning method used in the cleaning system. Thanks to this advantage, the steel wires are drawn at high speed in continuous galvanized lines and the galvanized coating production amount will also increase.
Another object of the present invention is to remove the heat treatment step, which is among the traditional galvanizing process steps depending on the mechanical characteristics of products, from the process operation.
In order to realize the abovementioned objects and the objects which are to be deducted from the detailed description below, the present invention is a cleaning system which provides cleaning of all dirt layers, which exist on the wire surface, in order to eliminate all surface dirt during pre-cleaning steps before galvanized coating of steel wires after cold shaping of wires which are hot rolled and which are heat treated, wherein the following parts are provided:
1 - A cleaning tank where alkali solutions are used as the cleaning chemical through which the wires pass and the dirt on the wire surface is softened,
2- A reserve tank for the continuity of the cleaning tank,
3- A vacuum pump for cleaning the reserve tank,
4- A brush holding apparatus for pre-cleaning before cleaning of the lubricant on the wire surface and a carbon fiber brush for preparation to the surface cleaning,
6- Rollers for guidance to the tank inlets and outlets in order for the wire, of which the surface will be cleaned, and the circular kinesis means not to be damaged,
7- Specific number of cathode tubes where the surface cleaning is essentially realized,
8- A cathode cover which comprises a channel which provides breaking of the contact of the cathode tube to the wire,
9- A magnet for magnetic field and which forms circular kinesis movement which may remove the moving ions inside the cathode cover,
10- An anode bed which is polygon adjustable for providing further contact of the anode to the wire surface,
11- Anode bed cover which preserves the anode bed,
12- The outer sheath which preserves the anode bed and the anode bed cover,
13- Anode in the form of regular polygonal prisms which will provide contact to the specially designed wire,
14- Air stripper used for not carrying liquid passage.
Said invention is cleaning tank which provides cleaning of dirt layers which exist on the surfaces of wires before the wires enter the zinc pool after cold shaping; wherein the following process steps are provided:
1 . Cleaning by means of alkali solutions,
2. Providing cleaning of the wire surfaces by electrolytic method by means of electrolytic method in the cleaning liquid.
The structural and characteristic properties and all advantages of the present invention will be understood in a more clear manner by means of the below mentioned figures and the detailed description written by making reference to these figures. Therefore, evaluation shall be made by taking into consideration these figures and the detailed description.
DESCRIPTION OF THE FIGURES
Figure 1 : An isometric view of the subject matter system
Figure 2: An isometric view of the depot and vacuum system used in the subject matter electrolytic cleaning tank
Figure 3: An isometric view of the anode used in the subject matter electrolytic cleaning tank
Figure 4: An isometric view of the cathode tube used in the subject matter electrolytic cleaning system
Figure 5: An isometric view of the brush and the brush holding apparatus of the brushing process in the subject matter electrolytic cleaning system
REFERENCE NUMBERS
1 : Brush holding apparatus
2: Brush
3: Chemical depot tank
4: Chemical cleaning channel
5: Cathode tube
6: Cathode cover
7: Magnet
8: Anode bed
9: Anode bed cover
10: Outer sheath
11 : Anode
12: Vacuum pump
13: Air stripper
14: Wire
DESCRIPTION OF THE INVENTION
The wire (14) output from the wire drawing process is connected to the unwrapping unit in a wrapped manner to the rollers and is unwrapped here. The wire (14), unwrapped at the pay off unit, passes through the annealing furnace between temperatures of approximately 750- 800eC in order to reach the desired tensile strength. Again, the galvanized coating process is realized without the wire (14), output from the wire drawing process, is heat treated at the desired tensile strength. The wire (14) which exits the annealing furnace and the wire (14) which is not heat treated pass through the cooling water tank and advance towards the galvanizing process. Before the wire (14) arrives at the cooling water tank, before the cleaning process of the lubricant, the brush holding apparatus (1) is processed for precleaning and the carbon fiber brush (2) is processed for preparation for surface cleaning. The wire (14) processed with the carbon fiber brush (2) advances towards the chemical cleaning channel (4). It passes through the cathode tube (5) which exists in the chemical cleaning
channel (4), and afterwards, it arrives at the part where the dirt on the surface thereof will be cleaned. In this part, the cleaning liquid is poured into the cathode tube (5) from the chemical depot tank (3) with the help of a pump. The cleaning liquid flows from the cathode cover (6), comprising slits around the periphery and which provides breaking of the contact of the cathode tube (5) to the wire, and is poured to the chemical cleaning channel (4). In the cathode cover (6), in order to increase cleaning capability, there is a magnet (7) which will form a magnetic field which forms circular kinesis movement which will move away the moving ions. After the wire (14) removes from this part, it advances to the anode (11) which exists in the chemical cleaning channel (4), and passes through an adjustable anode bed (8) in a polygonal form for providing further contact to the wire surface. Here, there is the anode bed cover (9) which preserves the anode bed (8). There is the outer sheath (10) provided in the middle of the chemical cleaning channel (4) and which preserves the anode bed (8) and the anode bed cover (9). While the wire (14) passes through the center of the anode bed (8), in order to provide better contact of the wire to the anode (11), after the wire passes through the anode which is in regular polygonal prism form which is specially designed, the wire surface occurs in a dry form with the help of air strippers (13) whose center is adjusted, and advances towards the cooling tank which is the next step. A vacuum pump (12) is used for removing the dirt accumulated in the chemical cleaning depot tank (3) after the surface cleaning of the wires. By means of this vacuum pump, it is aimed to increase the performance of alkali chemicals. The wire (14), having a surface cleaned from lubricants, passes through hydrochloric acid with very low concentration, and oxide and other dirt are removed. The wire (14) which exits the hydrochloric acid tank removes the residue liquid droplets thereon thanks to the strippers and enters the flux tank which is the final step before zinc coating. Thus, a thin film occurs on the steel wire (14) and is prevented from being oxidized until it enters the zinc furnace. The wire (14) coated with flux enters into the zinc furnace and is packaged in a galvanized coated form in the wrapper part.
INDUSTRIAL APPLICABILITY OF THE INVENTION
The efficient cleaning system and tank design, made by using electrolytic method in parts where surface cleaning is made before galvanize, has a structure which can be applied to the galvanized steel sector.
Claims
CLAIMS A cleaning system and design which provides purification of dirt from the surface of the wire (14) before galvanized coating, wherein the following parts are provided:
• Pre-cleaning brush holding apparatus (1 ) and brush
(2) for cleaning the lubricant on the wire (14) surface, after the wire (14) exits cold shaping,
• A chemical cleaning channel (4) where the wire (14) passes through the alkali solution with low concentration and where the dirt which exists on the wire is softened,
• A chemical cleaning channel (4) where the dirt which exists on the wire (14) is softened; a cathode tube (5) where the cleaning liquid passes through the chemical depot tank (3), a cathode cover (6) which provides breaking of the contact to the wire and which includes slits on the periphery thereof, a magnet (7) which will form a magnetic field which forms the circular kinesis movement which may remove moving ions for increasing cleaning capability, anode (11) which is in the form of regular polygonal prism, preferably triangular prism specially designed for providing better contact of the wire to the anode, an anode bed (8) which can be adjusted in polygonal form for providing further contact to the wire surface, an anode bed cover (9) which preserves the anode bed (8), an outer sheath (10) which preserves the anode bed and the anode bed cover, a vacuum pump (12) elements for removing the dirt accumulated in the chemical cleaning depot tank
(3) after surface cleaning of the wires. The surface cleaning system and design according to claim 1 , wherein copper bar elements with flexible mesh are provided which are assembled to the inner part of the chemical cleaning channel (4) and a power supply is provided for forming direct current which operates these copper bar elements. The surface cleaning system and design according to claim 1 , wherein in the chemical cleaning channel (4), alkali cleaning liquid is provided which can function in the most efficient manner with cathode and anode. The surface cleaning system and design according to claim 1 , wherein the system comprises a vacuumed pump for preventing becoming dirty of the cleaning liquid used in the chemical cleaning channel
(4).
7
5. The surface cleaning system and design according to claim 1 , wherein design is provided which will provide assembly and dismantling easiness of all parts, which will form the system, into the chemical cleaning channel (4).
6. The surface cleaning system and design according to claim 1 , wherein the current density, to be used in increasing wire surface quality and in eliminating all surface dirt prior to galvanizing realized with the use of alkali cleaning liquid by using electrolytic method with pulsed and non-pulsed electrical current of steel wire with the help of the tools mentioned in claims 2 and 3, is between 1 and 100 A/dm2 and the electrolysis duration is between 1 and 50 seconds.
7. The surface cleaning system and design according to claim 1 , wherein in the alkali cleaning liquid dependent on claim 3, 5-30 g/L Na+ ion and 1 -30 g/L K+ ion are provided.
8. The surface cleaning system and design according to claim 1 , wherein the process temperature of the alkali cleaning liquid dependent on claim 8 is 85eC or at a lower temperature.
8
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR2021/00753A TR202100753A2 (en) | 2021-01-19 | 2021-01-19 | SYSTEM AND METHOD OF PROVIDING STEEL WIRE SURFACE CLEANING ON APPARATUS USED FOR EFFECTIVE CLEANING BEFORE STEEL WIRES AND GALVANIZED COATING |
| PCT/TR2021/050560 WO2022159054A1 (en) | 2021-01-19 | 2021-06-09 | System and method for providing surface cleaning of steel wire on apparatus used for efficient cleaning before galvanized coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4281605A1 true EP4281605A1 (en) | 2023-11-29 |
| EP4281605A4 EP4281605A4 (en) | 2025-01-22 |
Family
ID=75576767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21921532.4A Pending EP4281605A4 (en) | 2021-01-19 | 2021-06-09 | SYSTEM AND METHOD FOR SURFACE CLEANING OF STEEL WIRE ON A DEVICE FOR EFFICIENT CLEANING BEFORE GALVANISATION |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4281605A4 (en) |
| TR (1) | TR202100753A2 (en) |
| WO (1) | WO2022159054A1 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2441776A (en) * | 1938-10-21 | 1948-05-18 | Freeport Sulphur Co | Process of metal coating metal articles |
| DE1496785A1 (en) * | 1966-12-10 | 1969-08-07 | Dynamit Nobel Ag | Process for removing metal powder and lower metal oxides from the surface of wire bundles pickled with sodium hydride |
| JPS55122899A (en) * | 1979-03-12 | 1980-09-20 | Fujikura Ltd | Degreasing method by high speed contactless electrolysis |
| JPS56130500A (en) * | 1980-03-19 | 1981-10-13 | Kokoku Kousensaku Kk | Continuous surface cleaning method for metallic wire material |
| DE3715454A1 (en) * | 1987-05-08 | 1988-11-17 | Slavjanskij Vni I Pk I Metall | Unit for electrochemically cleaning elongated materials, predominantly wire, used in welding |
| JPH07108235A (en) * | 1993-10-14 | 1995-04-25 | Dainippon Screen Mfg Co Ltd | Method and apparatus for washing thin metal panel |
| JP2001011697A (en) * | 1999-06-28 | 2001-01-16 | Daido Steel Co Ltd | Electrolytic descaling device for wire and manufacture of wire |
| RU2347010C2 (en) * | 2007-02-19 | 2009-02-20 | Елена Евгеньевна Никитина | Method for electroarc cleaning of metal product surfaces |
| CN210657156U (en) * | 2019-09-09 | 2020-06-02 | 江苏和丰制铁新材料科技有限公司 | Steel band degreasing device that no liquid is useless to be discharged |
-
2021
- 2021-01-19 TR TR2021/00753A patent/TR202100753A2/en unknown
- 2021-06-09 WO PCT/TR2021/050560 patent/WO2022159054A1/en unknown
- 2021-06-09 EP EP21921532.4A patent/EP4281605A4/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022159054A1 (en) | 2022-07-28 |
| EP4281605A4 (en) | 2025-01-22 |
| TR202100753A2 (en) | 2021-02-22 |
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Ipc: C25D 7/06 20060101ALI20241218BHEP Ipc: C25D 5/36 20060101ALI20241218BHEP Ipc: C25F 7/00 20060101ALI20241218BHEP Ipc: C25F 1/00 20060101AFI20241218BHEP |