DE2008606A1 - Apparatus for the continuous treatment of electrolytically influencing the metal wire and process for the continuous treatment of electrolytically influencing metal wires - Google Patents

Description

2QQ8606

Dipl.-Ing. Heinx L «« s «r, Pat« r, tonwalt D -8 Munich 81, Cosi'mostrafce 81 · Telephone: (0811) 48 38 20 The Furukawa Electric Company Limited L 8977

8, 2-chome, Maronouchi, Chiyoda-ku, L / ach

Tokyo, Japan

Apparatus for the continuous treatment of electrolytically influenced metal wire and process for continuous treatment of electrolytically influenced metal wires

The invention relates to an apparatus and to a Process for the continuous treatment of metal wires to be influenced electrolytically, namely electrolytically polished and / or electrolytically plated metal wires.

Wires to be electrolytically treated are known in the Apparatus in a straight line or in a zigzag line an electrolytic cell, which has the consequence that a relatively long electrolytic cell is required for long-term treatment. If besides If a large number of wires are to be treated at the same time, the cell must also have a relatively large width. Another disadvantage of the known apparatus is in that they are because of the large amount of electrolyte required are not exactly economical, their maintenance is difficult and the efficiency is proportionate low iat.

109038/1443

Dipl.-Inq. H «nz UiMt, fat« ntanwoit D -8 MünOien 81. Cosiimntrafc · 81 · Telephone: (0811) 48 3820

The invention is based on the object of eliminating the defects mentioned and of making an apparatus available provide, which can achieve a good level of efficiency despite continuous treatment.

An apparatus that can perform this task is characterized by at least one contact for the pair of guide rollers, which form an electrode, for the wire to be treated and one arranged between the guide rollers, at least one electrode plate that can be used as an anode or cathode in receiving electrolyte container, which by sdt distance Walls arranged from its original sides and running parallel to these are divided into several rooms, and thereby, that both the narrow sides as well as the walls have Durohertrussoleltze and the outer rooms to one internal space are connected via a known circulation system in such a way that the level of the electrolyte fluid in the internal space can be kept at a constant level. An apparatus designed in this way can can be used for both electrolytic polishing and electroplating of metal wires. Apart from the fact that the disadvantages mentioned at the outset are eliminated, such an apparatus is particularly useful when metal wires that are to be flattened are made several times must be pulled through an electrolyte in order to be able to apply a large number of plating soles. The various plating layers adhere very well to the wire and to each other when the wire is first passed through one Container through and then through one or more times the container is pulled through, the surface then being kept moist by spraying liquid or splashing water will «when the wire is outside of the electrolyte container is located.

2Ü08606

Dipl.-Ing. Η · ίηΐ Umw. Pcilentanwoit D— 8 Munich 81, Cosimasha & · 81 · T «Mon: (OBIl) 48 3820

It is useful to see to it that every leadership role on the circumference old a multitude of grooves provided 1st. The guide rollers or pairs of guide rollers can be horizontal or be arranged vertically, although it is particularly two-dimensional to arrange the axes of rotation of the guide rollers perpendicular. It is still useful to ensure that the is the plane of symmetry of two electrolyte containers determined by the axes of rotation of the guide rollers. Independent of Means that keep a wire moist while it is moved outside of one or more electrolyte containers, Care should be taken to ensure that the electrolyte tank (s) are assigned pre-treatment and post-treatment tanks. Is through the axes of rotation of the guide rollers defined level syametry level of two electrolyte containers, then the pre-treatment and the post-treatment containers are arranged practically in the same vertical plane, so that too thereby in a factory hall or the like. the available space can be used very effectively.

The invention is based on an exemplary embodiment Illustrative apparatus designed according to the invention Drawings explained. It shows:

Fig. 1 is a plan view of the apparatus, Fig. 2 is a side view of the apparatus,

Pig * 3 is a perspective view of the guide rollers ■ it a metal wire, and

FIG. 4 is a perspective illustration of two adjacent electrolyte containers with one only schematically indicated metal wire.

Flg. 1 and 2 show an electrolyte container 1, electrically conductive guide rollers 2, shafts 3 of the guide rollers 2,

2Ü86Ü6

Dipl.-Ing. Heinx Lewer, Pctentanwolt D - 8 Munich 81, CoiitTiaittafc « 81 · Telephone: (0B11) 48 38 20

Grooves 4 on the circumference of the guide roller !! 2, one to be treated, in the case of normal electro-plating as Cathode and wire used as an anode in electrolytic polishing Electrode plates 6, which in the case of electroplating as anodes and in the case of electrolytic polishing as cathodes used are »electrically connected to the guide rollers 2 and rotatable by these electrical contacts 7» one electrical line 8, an electrical power source 9 for the electrolysis, a decoiler 10, pretreatment devices 11 and 12, post-treatment devices 13 and 14 and a take-up reel 15.

r Fig. 3 shows the guide rollers 2a and 2b during loading

] 'action process, the extent of which has a multitude of grooves

4 have so that the wire to be treated 5 when Umwik-

] there is none in these grooves and, while the guide

Turn rollers 2a and 2b, moving in the direction of the arrows.

'Fig. 4 is a perspective view of an electrical

j lyt container 1, through which the wire to be treated in Rieh-

• the direction of the arrows is moved.

; The apparatus shown as an exemplary embodiment contains ; two parallel next to each other and in the directions of movement ; of the wire 5 arranged electrolyte container la and Ib, whose end faces or narrow sides are assigned to the guide rollers 2a and 2b mounted vertically and rotatably. These guide rollers 2a and 2b are connected to the electrodes of the electrical power source 9 via contacts 7, «Stirring the electrolyte containers la and Ib likewise with the Power source 9 are connected via the electrode plates 6. Between the wire entry and exit points Each container is provided with two partition walls 16, which with

10T838 / UA3

2Ü08B06

Dipt.-Ing. Heini less «, Pal« fiton * s ^: t D -8 Miindia 3 \, Cosimast'üfe «81 - Te! Efon: (08Π) 18 38 20

relatively small distance from the narrow sides 17 are arranged. Each partition 16 and each narrow side 17 is provided with narrow slots 18 and 19 for the wire to pass through. The wire goes through the slots like this 18 and 19 out and moved that it touches neither the partitions 16 nor the narrow sides 17 of the container. Of the in the middle one, delimited by the partitions 16! Part of each container 1 located electrolyte penetrates through a Slot 18 in a space 20, but by means of a circulation system known per se, not shown in the drawings, for the purpose of re-use in the central part of the electrolyte container. By twofold Choice of seat dimensions and the means of circulation system can the loss of the electrolyte can be avoided.

The amount deducted from the uncoiler 10 and supplied wire 5 (Pig.1 and 2) passes first through the pre-treatment baths 11 and 12 and is then guided to the bottom of the groove 4a FührungsroIlen 2a, slides through the ^fi lektrolytbehälter la to the bottom groove of the guide roller 4b 2b, in order to then reach the second lowest groove 4c of the guide roller 2a on the way back through the electrolyte container Ib.

The metal wire 5 then slides off the guide roller again 2a through the electrolyte container la, via the guide roller 2b into the electrolyte container Ib etc. up to the topmost groove 4z of the guide roller 2b, then through the aftertreatment baths 15 and 14 and is then rolled up onto the take-up reel 15.

In the above arrangement of the invention, the electrolyte containers, slots and guide rollers are described as being arranged one behind the other. The same principle can be applied to elements arranged parallel to one another (electrolyte

109838/144 3

Dipl.-Ing. Hvini U * t «r, PoUntonwalt 0 - 8 Munich 81, Cosimastrafc · 81 · T» t «fon: (OBII) 48 38 20

holders, slots and guide rollers) can be used. on in this way the wire 5 will through during its oiling the electrolyte container la and Ib subjected to an electrolytic treatment.

According to the fire, a very effective and perfect treatment can be achieved, as from the following Examples can be seen 1st.

Example I t

Am 2 ram strong Meesing wire rolled up on a decoiler (Cu 65 £ * Zn 35 $) was unwound, for several Immersed in NaOH solution for seconds, washed with water and then subjected to nickel plating in the plating apparatus according to the invention.

The composition of the nickel plating bath was Nlokel sulfate 250 g / l Boric acid 30 g / l Chlorniokel 120 g / l

The 25 cm diameter stainless steel rollers were rotated at a speed of 15 rpm to obtain the rotation speed of 11.8 a / mln. The length of the nickel-plated baths in each of the two containers was 5 m and the wire was guided back and forth for 30 m, so that the entire bed of the immersed wire was 300 m (30 steps 2 containers χ 5 m). The current intensity supplied was 5 A / dm ² with a 100% capacity, so that the thickness of the sticky coating adhering to the metal wire was 25 microns.

109898/14 43

.-Ing, Heinz dear. Pctsrtanwall D. -8th Munich 81 Cosimastfafs 81 • Telephone: 2U08606 Dipl - 7th - (0611) 483820

In order to use a for the manufacture of Niekel-plated Brass wire known plating method to achieve the same production percentage as above would be at least the extraordinary length of the plating tank of 300 m is necessary, otherwise the percentage would be the same Floor area dimensions as in the example shown are approximately 1/60 of what has been achieved above.

Example 2 :

A 20 mm thick steel wire rolled up on a decoiler 10 was immersed in an orthosodium silicate solution for several seconds immersed, washed with water and then for one minute of effect for the purpose of copper-electroplating of a 20 g / l copper cyanide and 43 g / l aurikalium cyanide containing electrolyte and again with water washed, then subjected to adhesive tin plating, washed with water, dried and rolled onto the take-up reel 15. The tin-plating mentioned was carried out as explained below:

The plating bath contained only 120 g / l aurotassium stannate. The guide rollers 2 had a diameter of 25 cm, were made of titanium and were made at a speed rotated by 15 rpm, so that the passage speed of the copper-clad steel wire also Was 11.8 m / min. The bath length in each treatment tank was also 5 m and the wire was 30 stepwise Turns so that the entire length of the immersed Wire was also 300 m (30 steps χ 2 containers χ 5m). The applied current was 283 A / dm with an 85 # igen performance, so that the strength of the tin plate tion on the copper clad wire was 10.5 microns.

1 09838 / U43

2Ü8B06

Oipl.-lng. Ηβίηι Lett · «, Patenten volt D - 8 Munich 31, Cosiniavliofie 81 Telephone: (06) 1) 48 38 20

To achieve the same production percentage using a known plating method used for tin-plated steel wire, at least the extraordinary one would be Length of 300 m for the plating tank, as well as a considerably larger width of the tank necessary, especially then, when a variety of electroplating is performed. However, with the same container dimensions productivity is only about 1/50 of the above.

Example 3 t

j For this example, the same electroplating ! apparatus and the same passage speed of the wire, j as listed in Example 2 for a cadmium plating

used. A brass wire of 1.5 mm diameter was j pretreated in a similar manner as in Example 1, plated with \ copper and in a 30 g / l of cadmium oxide and 120 g / l sodium cyanide bath containing a strong Kadmiumpiattie-: tion subjected, the current 565 A / dm! around a 35 micron thick even cadmium plating!

. of the wire under the same plating conditions as in Example 1.

Who by example? obtained tin-plated steel wire and the cadmium-plated brass wire obtained by Example 3 are found to be free from surface cracks and have unevenness and high adhesion.

From the above description it is evident that for this Invention no such complex equipment with a fairly large floor surface as necessary for known methods • ind, and that through this invention great economic and technical advantages can be obtained by the

A3

2Ü8606

Dipl.-Ing. Heinz Lesser, PöUmtanvrolt D -8 Munich 81, Cosimastralje 81 · Telephone: (0811) 48 3820

The quality of the clad wire is better and the work efficiency is significantly higher.

Example 4 ;

A pure, 3 mm thick copper wire rolled up on a decoiler 10 was degreased in ethyl trichloride vapor for 20 seconds, then in a polishing machine according to the invention. Polished ready, washed with water, dried and rolled up. Electrolytic polishing was carried out as follows;

Phosphoric acid (specific gravity 1 * 5 g / cnr), which was generated at 25 ° C and a voltage of 1.6V. The leading roles 2 of the Polishing apparatus according to the invention were made of titanium, had a diameter of 25 cm and were equipped with a Rotated speed of 5 * 1 rpm so that the passage speed of the wire was 4 m / min. There were two Treatment tank used, the length of the treatment bath within each tank being 1 m, and the wire 30 turns in steps, so that the entire length the one immersed in the electrolyte. Wire 60 m (30 steps χ 2 containers χ Im) reached.

The immersion time (polishing time) is calculated using the factors mentioned above: 60 m: 4 m / min »15 min. It can be seen from this that the apparatus of the present invention has an exceptionally high degree of efficiency, since it requires only 15 minutes of sonell electrolytic polishing in one Throughput speed of 4 m / min and a 1 meter long Container allowed. For this example, a copper wire with a large diameter and high electrical conductivity was used. Are wires with small electrical conductors

109838 / U43

Dipi.-Ing. Heini leuer. Pottmtotiwolt 0 - 8 Mur.dimi 81. Coiimastroft · 81 ■ Telephone; (0611) 48 38 20

ability and smaller diameter, e.g. made of steel, treated, there are other advantages as well, for a lengthy electrolytic polishing of steel wires In a known apparatus it is necessary to have contacts at various points for the power supply to the one used as an electrode To provide wire so that the cost of the equipment increases.

Thus, as mentioned above, this invention eliminates the disadvantage of the known apparatus, which is that they do a great job large apparatus with large floor space is required, and brings significant benefits by providing quality control electrolyte pool treatments is much easier, as well high efficiency and great savings can be achieved in the quality of the electrolytically treated wire is improved, and especially the anode (in the case of electro-plating) can be easily and continuously supplemented, and by making the intermediate contacts of the electrode, which are required for long-term treatments in a conventional apparatus the grooved guide rollers can be replaced.

The scope of the erindungsgemäßen apparatus is very large, the apparatus can be used for all kinds of electrolytic treatment and any treated electrolytically by appropriate choice of the electrolyte, the number of grooves on the Pührungsrollen, the Durohlaufgeachwindigkeit of the wire and the terminal of dl · current source each Create wire.

T09838 / U43

Claims (6)

Claims Ί. / Apparatus for the continuous treatment of metal wire to be influenced electrolytically, which consists of at least one electrolyte container to which guide means for the wire are attached, characterized by at least one contact for the pair of guide rollers (2j2a, 2b) for the wire (5 ) and one between the guide rollers, at least one electrode plate (6) which can be used as an anode or cathode and accommodating electrolyte container (1; la, Ib) in itself, which is separated from its narrow walls (17) by partition walls (17) which run parallel to them. 16) is divided into several rooms, and in that both the narrow sides (17) and the partition walls (16) each have at least one inner passage slot (18, 19), and the outer rooms to an inner room (20 ) are connected via a known circulation system in such a way that the level of the electrolyte liquid in the interior space (20) is at a constant level hey can be held. 2. Apparatus according to claim 1, characterized gekennzel chnet that each guide roller (2a,? B) is provided on the circumference with a plurality of grooves (h) . 3. Apparatus according to claim 1 or 2, characterized in that the axes of rotation (j5) of the Guide rollers (2j2a, 2b) are arranged vertically. 4. Apparatus according to one or more of Claims 1 to 5, characterized in that the axes of rotation (j5) of the guide rollers (2; 2a, 2b) including β 3ΤΓηΤΐΤ 2OU8606 Oifrf-In «. Heinz Ιμμτ. PoUntofiwolt D - 8 Mön * «n 81. Cotimastraft · 81 · Telephone: (0811) 48 38 20 - 12 - fixed plane plane of symmetry of two electrolyte containers (1) let. 5. Apparatus according to one or more of claims 1 to 4, characterized in that the electrolyte container or containers ^{are assigned pretreatment and aftertreatment containers (11, 12113, I 1} O). 6. Process for the continuous treatment of metal wires to be influenced electrolytically, d a d u r ο h characterized in that a wire to be treated is repeatedly passed through at least one electrolyte container is passed through and is constantly kept in a feuohtem condition. 109838 / U43 Blank page