EP0987350A2 - Verfahren und Vorrichtung zum Aufbringen eines Phosphatüberzuges auf Werkstücke - Google Patents
Verfahren und Vorrichtung zum Aufbringen eines Phosphatüberzuges auf Werkstücke Download PDFInfo
- Publication number
- EP0987350A2 EP0987350A2 EP99890263A EP99890263A EP0987350A2 EP 0987350 A2 EP0987350 A2 EP 0987350A2 EP 99890263 A EP99890263 A EP 99890263A EP 99890263 A EP99890263 A EP 99890263A EP 0987350 A2 EP0987350 A2 EP 0987350A2
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- EP
- European Patent Office
- Prior art keywords
- workpiece
- phosphating
- bath
- unit
- pickling
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- 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.)
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/36—Phosphatising
Definitions
- the invention relates to a method for applying a Phosphate coating on workpieces with a large longitudinal extension Iron-based alloys, especially on low-alloy or unalloyed steels in Form of wires or rods using electrical current.
- the invention further comprises a device for applying a Phosphate coating on workpieces of large longitudinal extent Iron based alloys, especially on low alloyed or unalloyed steels in Form of wires or rods, consisting of at least the components: electrolytically operable phosphating unit, drying device, Provisioning, feeding and discharge devices for the workpiece.
- Optimal stratification conditions can be achieved through precise coordination of the Phosphate concentration, accelerating the type and amount of added active agents as well as the temperature and pH in the bath.
- the phosphate layers formed usually consist of two layers, the the former adheres firmly to the workpiece and the upper layer part has little adhesion. In a practical application of phosphating are therefore Process conditions to choose in which the loose layer part is formed as low as possible. Furthermore, by the procedural conditions the structure of the phosphate layer determines which structure the Adhesion of a lubricant to the surface is affected.
- a non-cutting deformation for example drawing steel wires with high Deformation degrees and low tool wear, for example the It is to achieve drawing dies with savings from intermediate annealing treatments important that the surface of the workpiece both over its circumference and along its length a high adhesive strength, uniform trained, required thickness and a fine crystalline surface structure of the Has phosphate layer.
- the correct phosphate layer thickness is special Importance because too thick layers of friction, especially at the first Process step or when harvesting train, if necessary, increase significantly.
- too thin or uneven across the circumference of the workpiece Phosphating to tear open the layer during the train, making worse Surface quality of the production result and less durability of the drawing dies of the last moves can be caused.
- EP 288 853 describes a method for preparing workpieces known from titanium or titanium alloys, in which the workpieces in one aqueous, acidic zinc phosphate-containing phosphating solution appears and creates a zinc phosphate coating on the surface by cathodic electrolysis. Titanium and titanium alloys are chemically more resistant than steel, so that it is difficult to apply suitable lubricant carrier layers.
- the invention has for its object the shortcomings of the previously known Eliminate phosphating treatments and an economical process specify with which a firmly adhering, fine crystalline phosphate coating with a constant and selectable thickness in cross-section and with length constant basis weight on workpieces made of iron-based alloys, in particular on low-alloy steel wires.
- a firmly adhering, fine crystalline phosphate coating with a constant and selectable thickness in cross-section and with length constant basis weight on workpieces made of iron-based alloys, in particular on low-alloy steel wires One should Consistency of the coating even with different treatment times and different ion concentrations can be reached in the treatment bath.
- the object is achieved in a generic method in that the Workpiece moved in the longitudinal direction relative to the device while doing so consecutively at least its near-surface area to an elevated one Brought to temperature, passed through at least one treatment bath and during the passage through a phosphating unit with a passage time between 1.5 and 19 seconds, preferably between 4 and 9 seconds, the surface of which when exposed to electrical current, preferably cathodic, and an adjustment of the electrical values depending on the Treatment parameters phosphated and the applied layer after drying the workpiece from the bath or left to dry becomes.
- a relatively thick phosphate layer of 5 to 15 g / m 2 is required for further processing, for example for cold heading wires, it can be done in a simple manner these can be achieved by increasing the electrical cathode current.
- it is important that at least the area near the surface is brought to an elevated temperature before the workpiece or the wire is introduced into the phosphating bath in order to form a fine-crystalline layer structure immediately after the introduction.
- the advantageous phosphate layer formation on the workpiece can be supported when brought to a temperature between 45 ° C and 120 ° C and that Treatment bath on one between 45 ° C and the boiling point thereof is held, preferably with the proviso that the bath temperature is equal to or is set lower than the workpiece surface temperature.
- the anode in the phosphating bath is advantageous is formed that their current density to a value of 0.1 to 0.6, in particular about 0.3 times the current density on the workpiece surface Electrolysis parameters can be controlled particularly effectively can be achieved.
- the workpiece is moved through the treatment bath at a speed of 5 to 500 m / min, preferably from 30 to 100 m / min, and in the process has a phosphate coating on its surface 1 to 50 g / m 2 , preferably from 5 to 15 g / m 2 is applied.
- a phosphate coating on its surface 1 to 50 g / m 2 , preferably from 5 to 15 g / m 2 is applied.
- Higher deposition rates could bring further economic process advantages, but bring about a coarse structure of the phosphate layer, which can thereby have an adverse influence on the soaping and in particular on the first pull of the cold deformation of the wire.
- Both the quality and the uniformity of the phosphating can be increased if the electrical values during cathodic electrolysis in Dependence on the cation concentration in and on the respective Processing time of the workpiece through the phosphating bath with the stipulation be regulated that the coating thickness over the workpiece length in is kept substantially constant and that if the Continuous movement lifted the workpiece out of the treatment bath or whose bath level is lowered below the workpiece level. So that's it too possible, in the event of system malfunctions, a negative impact on the To largely eliminate product quality.
- a particular advantage with regard to continuous, highly economical phosphating can be achieved if the workpiece is pickled in the direction of its passage before being supported by the action of electrical current, in particular cathodic phosphating. It has proven to be useful if anodic pickling is carried out in one pass with a current density on the workpiece between 20 and 100 A / dm 2 , preferably between 40 and 80 A / dm 2 , and the pickling bath at a temperature between 45 ° C and 95 ° C is maintained.
- the electrical power supply to the device can be simplified and its Regulations can be obtained effectively if the electrolytic pickling as well the same phosphating bath electrically connected in series and with regulated DC voltage can be supplied.
- the material flow can be improved and the quality assurance of the coating can be increased if the workpiece with a cross-sectional area of 0.003 to 700 mm 2 is descaled and / or straightened linearly after removal from the stock.
- the further aim of the invention is in a device of the type mentioned Art achieved in that the individual components of the device each one have such embodiment and arrangement that the workpiece in Longitudinal direction is movable through this and editable in this and that the phosphating unit at least one heating device for a is arranged upstream moving workpiece, the one with electric current supplyable unit, in particular an electrolysis unit for phosphating at least one, essentially tubular, surrounding the workpiece Has electrode and a feed and an inlet and outlet side Has overflow device for the phosphate bath.
- the phosphating unit which can be supplied with electrical current in the Phosphating bath area and / or in the feed or discharge area Device for quickly lowering the bath level below the level of the Has workpiece.
- the electrolytically operable phosphating unit has at least one, preferably essentially identical pickling unit, preferably is a particularly economical and safe one Phosphating with high product quality achievable.
- the course of the coating can with regard to the structure and design of the Phosphate support on the workpiece are conveyed when the phosphating unit and the pickling unit and / or the preparation means for the liquid phosphating and Pickling media have adjustable heating devices for them.
- the tube electrode of the pickling unit and Tubular electrode of the phosphating unit with the minus and plus pole of an adjustable one DC voltage source can be connected and that the workpiece is connectionless can be formed as an anode and a cathode.
- Both for easy insertion of the workpiece and for improved Service conditions can be provided that are essentially concentric tubular electrode of the phosphating and / or arranged around the workpiece the pickling unit, viewed in the axial direction by at least two each Shell segments are formed and at least some of the shell segments can be lifted off or swung out.
- Electrolysis bath Particularly effective in preventing short circuits in the Electrolysis bath has been found to be at least the bottom of the tubular electrode or a shell segment arranged in this way Provided holes or is designed in grid form.
- the heating device as induction or as conductive acting system is formed and at least after the heating device, preferably in each case before and / or after the pickling unit of the phosphating unit and optionally the drying device, a temperature measuring device is arranged to determine and / or regulate the workpiece temperature, and if all measuring devices of the device with a central measuring and / or A control and / or documentation unit can be connected fully automatic operation of the device for applying a Phosphate coating and the highest quality of the coating can be achieved.
- a pickled wire rod 11 is axially directed from a drum or a bundle 1, for example by a bending straightening system, and is introduced into a controllable heating device 3.
- a regulation of the heating system which in particular acts inductively or conductively on the wire, can be carried out by a downstream temperature measuring device T 1 .
- a phosphating unit 5 arranged downstream in the direction Z of passage of the wire 11 has a container for a phosphating medium 50 and has at least one feed 52 for this. On the inlet and outlet sides, the container has an overflow device 53, 54, through which the wire 11 can be brought through the phosphating bath largely without friction. In the event of faults or for insertion of the wire 11, the phosphating bath level can be lowered by means of a device 55.
- a tubular electrode 51 in the container which can be designed in segment form, can be positioned essentially concentrically around the wire 11 and has a connection to the PLUS pole of a controllable direct current source 8, the MINUS pole of which is connected to a contact roller 51 '.
- a heating device (not shown) for the phosphating medium 50 can be arranged in the container or in a preparation vessel.
- the surface temperatures of the wire and those of the bath can be determined by means of temperature detection means T 3 T 4 T 5 , the measured values of which are preferably supplied to the control device.
- the phosphating unit 5 are rinsing agents for the wire, not shown in FIG 11 downstream, which wire in the sequence a drying device 6 and optionally passes through a soaping device and in a drawing bench 7 is deformed.
- FIG. 2 shows a device 5 for applying a Phosphate coating is shown schematically with an upstream pickling unit 4.
- the pickling unit 4 in Fig.2 has in principle the same structure as that Phosphating unit 5, but can be constructed differently. Important here is that because pickling takes place in the same line as applying one Phosphating coating, the pickling parameters with concentration of the pickling liquid, Temperature of the pickling medium and the wire, electrolysis conditions as well Pickling time and the like are matched to the wire speed. It is particularly advantageous to conduct current via the tubular electrode 51 in the Phosphating medium 50 over the wire 11 and over the tube electrode 41 in the Pickling liquid 40 when the electrodes are connected to a controllable one DC power source 8.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Metal Extraction Processes (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Description
Claims (20)
- Verfahren zum Aufbringen eines Phosphatüberzuges auf Werkstücke mit großer Längserstreckung aus Eisenbasislegierungen, insbesondere auf niedriglegierte oder unlegierte Stähle in Form von Drähten oder Stäben mit Anwendung von elektrischem Strom, dadurch gekennzeichnet, daß das Werkstück in Längsrichtung relativ zur Vorrichtung bewegt und dabei hintereinander folgend zumindest dessen oberflächennaher Bereich auf eine erhöhte Temperatur gebracht, durch mindestens ein Behandlungsbad geführt und während des Durchlaufens durch eine Phophatier- Einheit mit einer Durchlaufzeit zwischen 1,5 und 19 Sekunden, vorzugweise einer solchen zwischen 4 und 9 Sekunden dessen Oberfläche bei einem Einwirken von elektrischem Strom, vorzugsweise kathodisch, und einer Einstellung der elektrischen Werte in Abhängigkeit von den Behandlungsparametern phosphatiert und die dabei aufgebrachte Schicht nach dem Ausbringen des Werkstückes aus dem Bad getrocknet oder trocknen gelassen wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Werkstück auf eine Temperatur zwischen 45°C und 120°C gebracht und das Behandlungsbad auf eine solche zwischen 45°c und dem Siedepunkt desselben gehalten wird, vorzugsweise mit der Maßgabe, daß die Badtemperatur gleich oder niedriger als die Werkstückoberflächen- Temperatur eingestellt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß beim Phosphatieren das Werkstück elektrisch als Kathode geschaltet und senkrecht zu dessen Längserstreckung umfänglich ein gleicher Potentialverlauf im Behandlungsbad erstellt wird, vorzugweise ein Durchlauf durch eine im wesentlichen rohrförmig um das Werkstück angeordnete Anode erfolgt, wobei die elektrischen Parameter derart eingeregelt werden, daß eine Stromdichte am Werkstück von 0,5 bis 20 A/dm2 , vorzugweise von 5 bis 10 A/dm2 erreicht wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Anode im Phosphatierbad derart ausgebildet wird, daß deren Stromdichte auf einen Wert von 0,1 bis 0,6, insbesondere aufetwa 0,3 mal der Stromdichte an der Werkstückoberfläche gehalten wird.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Werkstück mit einer Geschwindigkeit von 5 bis 500 m/min, vorzugweise von 30 bis 100 m/min durch das Behandlungsbad bewegt und dabei auf dessen Oberfläche eine Phosphat-Beschichtung von 1 bis 50 g/m2, vorzugsweise von 5 bis 15 g/m2 aufgebracht wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die elektrischen Werte bei der kathodischen Elektrolyse in Abhängigkeit von der Kationenkonzentration im und der jeweiligen Durchlaufzeit des Werkstückes durch das Phosphatierungsbad mit der Maßgabe geregelt werden, daß die Beschichtungsdicke über die Werkstücklänge im wesentlichen konstant gehalten wird und daß bei einer Unterbrechung der Durchlaufbewegung das Werkstück aus dem Behandlungsbad ausgehoben oder dessen Badspiegel unter das Werkstückniveau gesenkt wird.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Werkstück in dessen Durchlaufrichtung vor einem durch Einwirkung von elektrischem Strom unterstützten, insbesondere einem kathodischen Phosphatieren, gebeizt wird.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Werkstück mit einer Querschnittsfläche von 0,03 bis 700 mm2 unmitttelbar nach der Entnahme aus dem Vorrat entzundert und/oder linear gerichtet wird.
- Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Beizen durch die Einwirkung von elektrischem Strom unterstützt, insbesondere ein anodisches Beizen im Durchlauf mit einer Stromdichte am Werkstück zwischen 20 und 100 A/dm2, vorzugweise zwischen 40 und 80 A/dm2 durchgeführt und das Beizbad auf bei einer Temperatur zwischen 45°C und 95°C gehalten wird.
- Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das elektrolytische Beiz- sowie das dergleichen Phosphatierbad elektrisch in Serie geschaltet und mit geregelter Gleichspannung versorgt werden.
- Vorrichtung zum Aufbringen eines Phosphatüberzuges auf Werkstücke mit großer Längserstreckung aus Eisenbasislegierungen, insbesondere auf niedrig legierte oder unlegierte Stähle in form von Drähten und Stäben, bestehend aus mindestens den Komponenten: elektrolytisch betreibbaren Phosphatier-Einheit, Trocknungseinrichtung, Bereitsstellungs-, Zuführ- sowie Austragsvorrichtungen für das Werkstück, dadurch gekennzeichnet, daß die Einzelkomponenten der Vorrichtung jeweils eine derartige Ausführungsform und Anordnung aufweisen, daß das Werkstück (11) in Längsrichtung (Z) durch diese durchbewegbar und in diesen bearbeitbar ist und daß der Phosphatier-Einheit (5) mindestens eine, Erwärmungs-Einrichtung (3) für ein durchbewegtes Werkstück (11) vorgeordnet ist, wobei die mit elektrischem Strom versorgbare Einheit, insbesondere eine Elektrolyse-Einheit (5), für ein Phosphatieren mindestens eine, im wesentlichen rohrförmige, das Werkstück (11) umgebende Elektrode (51) aufweist und eine Zuführung (52) und ein- sowie auslaufseitig eine Überlaufeinrichtung (53,54) für das Phosphatierbad (50) besitzt.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die mit elektrischem Strom versorgbare Phophatier-Einheit (5) im Phosphatierbadbereich (50) und/oder in dessen Zu- oder Ableitungsbereich eine Vorrichtung (55) zum schnellen Absenken des Badniveaus (56) unter die Höhe des Werkatückes (11) aufweist.
- Vorrichtung nach einem der Ansprüche 11 oder 12, dadurch gekennzeichnet, daß der Erwärmungseinrichtung (3) eine vorzugsweise mechanische Entzunderungs- und/oder eine Richtanlage (2) für das Werkstück (11) vorgeordnet ist.
- Vorrichtung nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, daß der elektrolytisch betreibbaren Phosphatier-Einheit (5) mindestens eine, vorzugsweise im wesentlichen gleich aufgebaute Beiz-Einheit (4) vorzugsweise unmittelbar vorgeordnet ist.
- Vorrichtung nach einem der Ansprüche 11 bis 14, dadurch gekennzeichnet, daß die Phosphatier-Einheit (5) und die Beiz-Einheit (4) und/oder die Bereitstellungsmittel für die flüssigen Phosphatier- und Beizmedien regelbare Wärmeeinrichtungen für diese aufweisen.
- Vorrichtung nach einem der Ansprüche 11 bis 15, dadurch gekennzeichnet, daß die Rohrelektrode (41) der Beiz-Einheit (4) und die Rohrelektrode (51) der Phosphatier-Einheit (5), mit dem Minus- und Pluspol einer regelbaren Gleichspannungsquelle (8) verbindbar sind und daß das Werkstück anschlußfrei jeweils als Anode und Kathode ausbildbar ist.
- Vorrichtung nach einem der Ansprüche 11 bis 16, dadurch gekennzeichnet, daß die im wesentlichen konzentrisch um das Werkstück angeordnete rohrförmige Elektrode der Phosphatier- (5) und/oder der Beizeinheit (4), gesehen in Axrichtung, durch jeweils mindestens zwei Schalensegmente gebildet und zumindest ein Teil der Schalensegmente abhebbar oder ausschwenkbar ausgeführt ist.
- Vorrichtung nach einem der Ansprüche 11 bis 17, dadurch gekennzeichnet, daß zumindest die Unterseite der rohrförmigen Elektrode bzw. ein derartig angeordnetes Schalensegmente mit Bohrungen versehen oder in Gitterform ausgeführt ist.
- Vorrichtung nach einem der Ansprüche 11 bis 18, dadurch gekennzeichnet, daß die Erwärmungseinrichtung (3) als Induktions- oder als konduktiv wirkende Anlage ausgebildet ist.
- Vorrichtung nach einem der Ansprüche 11 bis 19, dadurch gekennzeichnet, daß zumindest nach der Erwärmungseinrichtung (3), vorzugweise jeweils vor und/oder nach der Beiz-Einheit (4) der Phophatiereinheit (5) sowie gegebenenfalls der Trochnungseinrichtung (6) eine Temperaturmeßeinrichtung (T1) (T2T3T5T0) zur Feststellung und/oder Regelung der Werkstücktemperatur angeordnet ist und daß sämtliche Meßeinrichtungen der Vorrichtung mit einer zentralen Meß- und/oder Regel- und/oder Dokumentationseinheit verbunden sind.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT99890263T ATE331825T1 (de) | 1998-08-06 | 1999-08-05 | Verfahren und vorrichtung zum aufbringen eines phosphatüberzuges auf werkstücke |
SI9930917T SI0987350T1 (sl) | 1998-08-06 | 1999-08-05 | Postopek in naprava za nanasanje fosfatne prevleke na obdelovance |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT136398 | 1998-08-06 | ||
AT0136398A AT405947B (de) | 1998-08-06 | 1998-08-06 | Verfahren und vorrichtung zum aufbringen eines phosphatüberzuges auf werkstücke |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0987350A2 true EP0987350A2 (de) | 2000-03-22 |
EP0987350A3 EP0987350A3 (de) | 2004-03-24 |
EP0987350B1 EP0987350B1 (de) | 2006-06-28 |
Family
ID=3512272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99890263A Expired - Lifetime EP0987350B1 (de) | 1998-08-06 | 1999-08-05 | Verfahren und Vorrichtung zum Aufbringen eines Phosphatüberzuges auf Werkstücke |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0987350B1 (de) |
AT (1) | AT405947B (de) |
CZ (1) | CZ295733B6 (de) |
DE (1) | DE59913624D1 (de) |
ES (1) | ES2268846T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103741195A (zh) * | 2013-12-23 | 2014-04-23 | 南通恒新金属工艺科技有限公司 | 钢丝电解磷化处理装置 |
CN112226755A (zh) * | 2020-09-23 | 2021-01-15 | 山东大业股份有限公司 | 一种金属线材表面处理用磷化方法及装置 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010028385A1 (de) * | 2010-04-29 | 2011-11-03 | Endress + Hauser Gmbh + Co. Kg | Verfahren und Vorrichtung zur Durchführung mindestens eines oberflächenmodifizierenden Prozesses an metallischen Werkstücken |
CN102277612A (zh) * | 2011-08-02 | 2011-12-14 | 威海银兴预应力线材有限公司 | 钢绞线拉丝在线磷化、皂化装置 |
CN102586839B (zh) * | 2012-03-26 | 2014-12-10 | 南通高罕金属设备科技有限公司 | 折叠式开坯在线磷化处理装置 |
DE102015121349A1 (de) * | 2015-12-08 | 2017-06-08 | Staku Anlagenbau Gmbh | Vorrichtung zur Oberflächenbehandlung eines Endlosmaterials sowie deren Verwendung |
CN108360042A (zh) * | 2018-04-02 | 2018-08-03 | 江阴海瑞德机电科技有限公司 | 单丝过电轮装置 |
CN110863229A (zh) * | 2019-12-09 | 2020-03-06 | 嘉兴东恒机械设备有限公司 | 新型金属材料无酸电解磷化工艺 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2812296A (en) * | 1953-06-16 | 1957-11-05 | United States Steel Corp | Electrochemical method for coating steel surfaces and the product thereof |
GB1165014A (en) * | 1966-08-22 | 1969-09-24 | Herbert Kenmore | Apparatus for Treating Wire and Rods. |
US4437947A (en) * | 1980-02-21 | 1984-03-20 | Nippon Steel Corporation | Cold rolled steel strip having an excellent phosphatizing property and process for producing the same |
US4566954A (en) * | 1981-12-09 | 1986-01-28 | Hitachi, Ltd. | Method of and apparatus for split rolling of steel sheet |
WO1991019836A1 (en) * | 1990-06-01 | 1991-12-26 | Henkel Corporation | Method for treating the surface of steel |
US5087342A (en) * | 1988-04-07 | 1992-02-11 | Seneca Wire And Manufacturing Company | Continuous steel strand electrolytic processing |
-
1998
- 1998-08-06 AT AT0136398A patent/AT405947B/de not_active IP Right Cessation
-
1999
- 1999-07-30 CZ CZ19992710A patent/CZ295733B6/cs not_active IP Right Cessation
- 1999-08-05 DE DE59913624T patent/DE59913624D1/de not_active Expired - Fee Related
- 1999-08-05 ES ES99890263T patent/ES2268846T3/es not_active Expired - Lifetime
- 1999-08-05 EP EP99890263A patent/EP0987350B1/de not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2812296A (en) * | 1953-06-16 | 1957-11-05 | United States Steel Corp | Electrochemical method for coating steel surfaces and the product thereof |
GB1165014A (en) * | 1966-08-22 | 1969-09-24 | Herbert Kenmore | Apparatus for Treating Wire and Rods. |
US4437947A (en) * | 1980-02-21 | 1984-03-20 | Nippon Steel Corporation | Cold rolled steel strip having an excellent phosphatizing property and process for producing the same |
US4566954A (en) * | 1981-12-09 | 1986-01-28 | Hitachi, Ltd. | Method of and apparatus for split rolling of steel sheet |
US5087342A (en) * | 1988-04-07 | 1992-02-11 | Seneca Wire And Manufacturing Company | Continuous steel strand electrolytic processing |
WO1991019836A1 (en) * | 1990-06-01 | 1991-12-26 | Henkel Corporation | Method for treating the surface of steel |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103741195A (zh) * | 2013-12-23 | 2014-04-23 | 南通恒新金属工艺科技有限公司 | 钢丝电解磷化处理装置 |
CN103741195B (zh) * | 2013-12-23 | 2016-06-15 | 南通恒新金属工艺科技有限公司 | 钢丝电解磷化处理装置 |
CN112226755A (zh) * | 2020-09-23 | 2021-01-15 | 山东大业股份有限公司 | 一种金属线材表面处理用磷化方法及装置 |
CN112226755B (zh) * | 2020-09-23 | 2023-06-23 | 山东大业股份有限公司 | 一种金属线材表面处理用磷化方法及装置 |
Also Published As
Publication number | Publication date |
---|---|
EP0987350A3 (de) | 2004-03-24 |
CZ271099A3 (cs) | 2000-03-15 |
AT405947B (de) | 1999-12-27 |
EP0987350B1 (de) | 2006-06-28 |
ES2268846T3 (es) | 2007-03-16 |
CZ295733B6 (cs) | 2005-10-12 |
ATA136398A (de) | 1999-05-15 |
DE59913624D1 (de) | 2006-08-10 |
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