US1952762A - Process and apparatus for producing sheet metal electrolytically - Google Patents

Process and apparatus for producing sheet metal electrolytically Download PDF

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US1952762A
US1952762A US507126A US50712631A US1952762A US 1952762 A US1952762 A US 1952762A US 507126 A US507126 A US 507126A US 50712631 A US50712631 A US 50712631A US 1952762 A US1952762 A US 1952762A
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foil
tank
anodes
sheet
plating
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US507126A
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Levy Solomon
Charles E Yates
William M Shakespeare
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Anaconda Copper Mining Co
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Anaconda Copper Mining Co
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Priority to BE385463D priority Critical patent/BE385463A/xx
Application filed by Anaconda Copper Mining Co filed Critical Anaconda Copper Mining Co
Priority to US507126A priority patent/US1952762A/en
Priority to FR729299D priority patent/FR729299A/fr
Priority to DEA64661D priority patent/DE642373C/de
Priority to GB534/32A priority patent/GB395002A/en
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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
    • C25D1/00—Electroforming
    • C25D1/04—Wires; Strips; Foils

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  • This invention relates to the production of thin sheetcopper has been electrolytically prometal in the form of thin sheets by a process of conspicient in substantial quantities up to the present, electrodeposition and is concerned more particueither for sale as such or for subsequent rolling. larly with a process and apparatus by which a The reasons for the failure of prior 'methods novel sheet metal product maybe produced elecand apparatus for producing sheet copper by trolytically at low cost.
  • the new product is an deposition, at least for commercial purposes, are electrolytic sheet of metal of uniform thickness, manifold. According to these methods, it has free of oxygen, and of uniform quality.
  • a thin foil profoils often exceeds the cost of the metal used, swiped in any desired manner is built up to final which accounts for the high cost of such foils. thickness by electrodeposition of metal on one Electrolytic production of thin sheets would face thereof.
  • a plating tank appear to offer a method of producing foil at a. is used in which there are mounted a plurality 105 great reduction in cost and many attempts have of anodes in. face to face relation and disposed been made to produce thin sheet copper of coma distance apart to provide spaces between them.
  • the foil are subjected to average current density throughout their travel through the tank, thus insuring uniformity in the weight of the final product. and since the foil does not pass beneath any anode, it is not roughened by the sludge which results from the anode going into solution.
  • the anodes are so arranged that the foil successively opposes each face of each anode in'the series except the first and last, but if desired, the foil may be so guided as to oppose successively each face of each anode in the series including the first and last.
  • a thin film or foil of metal is plated on an endless cathode surface, stripped therefrom and then led throu h a plating tank along a tortuous path.
  • the foil may be guided by suitable elements which are not affected by the plating solution and may, *if desired, serve as contact means by which the plating current may be withdrawn from the foil.
  • suitable elements may be so arrangedthat in one construction, the current leaving the solution passes through the foil only substantialln at right angles to the plane thereof, while in another, the current does not travel in the plane of the foil for any substantial distance. In both cases, the current flow through the foil is below the solution level and that arrangement of using this arrangement, sheets are produced,
  • the thickness is of a high degree of uniformity because the plating isnot afiected by stratification in the solution and differences in temperature at different places, nor by variations in spacing between the foil and the anodes.
  • All the anodes are in parallel and similarly all the negative contact elements engaging the foil are in parallel and variations in plating resulting from variable contacts between the anodes or the contact elementsand the bus bars or from a variable space relation between the foil and the various anodes do not affect the final thickness because any reduction in plating which arises from a poor contact at one anode or at one contact element or, from a wider spacing of the foil from one anode than from another is compensated for by increased plating elsewhere.
  • the plating is confined to one face only of the sheet, the sheet guided in a loop path between pairs of anodes, thus avoiding the effects of Stratification of electrolyte, and the anodes and cathodes are connected in parallel to ,the bus bars, every point on, the sheet is subjected to average current density during the electro-deposition, provided the end anodes are par allel. This results in uniformity in deposition and in thickness of the final product.
  • the anodes and the strip being built up have such a relationto one another throughout the equipment that there is a free path unobstructed by the foil from each anode to the bottom of the tank, and, as a consequence, crude metal anodes may be used because the sludge which results from the passage of the crude metal into the solution drops down freely to the bottom of the tank whence it can be removed as in ordinary electrolytic refining and does not come in contact with the surface in which the deposition occurs.
  • the sheets produced by thenew method and apparatus are superior in many respects to sheets produced by electrodepbsition in accordance with ordinary prior methods.
  • the new method and apparatus make it possible to obtain sheets of the desired character more cheaply than by ordinary rolling, and for this purpose, sheets may be produced electrolytically by the new process and apparatus which are of greater thickness than is ultimately desired and then rolled to final thickness.
  • Such a rolling operation would change the physical characteristics of the metal, improving its tensile strength and elongation and making'it suitable for special fabrication operations.
  • Fig. 1 is a view in longitudinal section through apparatus for practicing the processof the invention
  • Fig. 2 is a top plan view of the apparatus illustrated in Fig. 1;
  • Fig. 3 is a vertical sectional view on the line 3-3 of Fig.1;
  • Fig. 4 is a sectional view on the line 4-4 of Fig. 1;
  • Fig. 5 is an enlarged end view of a portion of the apparatus shown in Fig. 1;
  • Fig. 6 is a view in side elevation showing the mounting of a drive roll
  • Fig. 7 is an end view of the parts shown in Fig. 6;
  • Fig. 8 is an end view on an enlarged scale illustrating details of the mechanism
  • Fig. 9 is a fragmentary plan view of parts shown in Fig. 8.
  • Fig. 10 is a sectional view on through a guide element
  • Fig. 11 is a sectional view of a portion of amodified form of guide element
  • Fig. 12 is a view similar to Fig. 1 showing a modified form of apparatus
  • Fig. 13 and 14 are views in front elevation of standard anodes employed in the apparatus
  • Fig. 15 is a side view of one of the anodes
  • Fig. 16 is a front elevation of a guide and contact element
  • Figs. 17 and 19 are vertical sectional views through parts of modified forms of the apparatus.
  • Fig. 18 is a perspective view of one formof guide element.
  • Fig. 19 is a vertical sectional view through another modified form of the apparatus.
  • FIG.1 one form of apparatus for practicing the new process is illustrated in Fig.1 1.
  • This apparatus comprises a standard electrolytic tank 20 into which plating solution is introduced through a pipe 21 and an enlarged scale from which the solution overflows through a drain 22. Extending along the side walls of the tank -at the top thereof on opposite sides are' are connected in the circuit to an elingerrical generator of the type commonly used for refining or plating purposes.
  • a plating drum generally designated 25.
  • This drum is made up of end discs 26 connected by a cylindrical portion 2'7, the latter being provided with a facing 28 of a metal which permits easy stripping. ,In connection with the deposition of copper, this facing may be of lead, chromium, stainless steel, or the like.
  • the drum 25 is mounted on a shaft 29 supported in bearings 30, 30 mounted on the tank walls and held in .place by bolts 30a.
  • the shaft carries a contact disc 31 which dips into a pool of mercury in the trough 32 electrically connected to the negative bus bar 24.
  • the bearing 30 is insulated from the positive bus bar 23 by a layer of insulation 33.
  • the shaft 29 has a ventilating opening 34 formed in it.
  • the drum is provided for the purposeof producing a thin foil which is later to be built up in succeeding operations and substantially the entire lower half of the drum extends down into the tank and lies beneath the solution level therein. .iDisposed beneath. the submerged portion of the drum and closely adjacent thereto is an anode assembly.
  • This assembly may be made up of two anodes 35, 36 of the type commonly used in refineries and similar in shape to those illustrated in Figs. 13 and 14. By using such anodes, the formation of special anodes by casting is not necessary.
  • the anodes 35, 36 to be used beneath the drum are given a curvature so that they conform in shape fairly closely to the outer curvature of the drum and the anodes rest on a support 37 covered with a conducting material such as lead, and disposed within the tank and maintaining the anodes at a close spacing with reference to the drum periphery.-
  • the anodes when placed in the support make contact with the positive bus bar by means oftheir lugs 38, while the lugs 39 which overlie the negative bus bar 424 are insulated therefrom by a strip 40.
  • a pair of anodes 35, 36 are not of suiiicient size to extend around the entire submerged portion of the drum and, in this case, we employ a pair of additional anode plates 38' cut from ordinary refinery anodes and resting on the support to lie between the lower edges of anodes 35, 36.
  • the plates are of such size that they may be slightly spaced apart from each other and from the anodes so that there is a free circulation of the solution between the two plates and between the plates and anodes. Also, this spacing permits the sludge resulting from the anodes going into solution, when soluble anodes are used, to pass down to the bottom of the tank.
  • the plates are in electrical connection with the bus bar through the leadcovered support and the anodes.
  • a roll 42 mounted on suitable framework 41 close tothe periphery of the drum and above the top of the tank is a roll 42 and in the operation of the apparatus/the foilor thin sheet 43 deposited on the drum is stripped from the drum surface and led off over the roll 42.
  • the surface of the drum, from which the metal has been stripped, is cleaned by means such as a driven wire brush 42', which is placed close to the point where the moving surface enters the electrolyte, this brush serving to clean the surface of any foreign matter which adheres thereto and also removing any oxide which may have formed on the surface during its travel beyond the point of stripping.
  • the foil produced on the drum may be stripped -and wound into a roll instead of being passed directly to the subsequent plating tank. and when that procedure is followed, it is preferable to place the stripping roll 42 at apoint close to the brush. Byusing that arrangement. the drum surface is protected from dirt and oxidation by the presence of the foil thereon throughout practically the entire length of the surface which is'outside the electrolyte.
  • the tank wall support a hollow center or skeleton frame 44 of suitable metal construction at a distance from the drum 25, this frame being removable as a unit.
  • On the upper longitudinal members 45 of the frame are mounted a verse axis than elsewhere.
  • each roll has a shaft 46' which carries a sprocket wheel 4'7 on one end.
  • the roll shaft is mounted' ⁇ in bearings 48 which are provided with spaced portions 49 which straddle the upright legs 50 of the angle irons which form the longitudinal members of the frame.
  • the mounting for the bearings is such that the rolls can be adjusted lengthwise of the frame and secured in any desired position of adjustment.
  • One of the bearings 51 for each roll shaft is provided with adjustment screws 52 bearing against the top of the lug 50 of the frame member and by means of these screws the bearing can be raised or lowered so as to vary the inclination of the roll to the horizontal.
  • the sprocket wheels 47 of the several rolls of the series are driven by a chain 53 which passes over a sprocket wheel 54 on the shaft 55 of a roll 56 at the end of the series.
  • the shaft 55 also carries a drive pulley 57 driven by a chain 58 from any suitable source of power and the rotation of the shaft 55 results in rotation of all the rolls 46.
  • the rolls may draw the foil from the drum and cause rotation of the drum as the foil is stripped therefrom or thedrum may be positively driven by suitable means.
  • Each of the sprocket wheels 47 of the rolls 46 has such a number of teeth that the rolls rotate at a slightly higher rate of speed than the roll 56 and this insures that the foil or sheet will be kept taut and not subjected to driving strain concentrated at one point.
  • the rolls 46 serve as a means for controlling the tension of the sheet as it passes around the guide and contact elements and associated with the roll 56 is a roller 59 which contacts with roll 56 and provides a positive drive means for the sheet.
  • the tension in'the sheet as it passes around the contact elements may be varied as desired. While the positive drive for the sheet is illustrated as lying at the end of the group of contact elements, it may if desired be placed between the drum and the contact elements, in which event the sheet leaving the elements will be taken up on a take-up roll operated by a friction drive.
  • each of these elements is a skeleton frame made up of longitudinal members 60a and cross-bars 60b. "There are three cross-bars mounted on the longitudinal members oneach face of the frame, and the-middle cross-bars are .thicker than the outer ones, so that the frame has a greater overall thickness along its trans-
  • the longitudinal frame members are secured at their upper ends to a cross-bar 61, which rests on the lower longitudinal members 62 forming part of the frame 45 and along the outer faces of the two outer members 60a are wooden bars 63.
  • the foil being plated contacts at its edges with these wooden bars and they prevent plating on the inner edges of the foil.
  • the contact element may be used in the form of the skeleton frame shown in Fig. 18 in which case the moving foil receiving plating makes contact with the several cross-bars and the plating current is withdrawn from the foil through these cross-bars.
  • the plating current is withdrawn from the foil through extended areas thereof and current does not flow through the foil in its plane for substantial distances.
  • the cross-bars lie beneath the solution level and with this arrangement, danger of injury to the foil by reason of the passage of excessive plating currents through it is reduced, and the power cost is less by reason of the lower voltage required.
  • the cross-bar 61 is provided with an adjusting plate 611:. secured to the cross-bar by adjusting screws 61b- These screws pass through openings in the facing sheet and by turning them, the adjusting plate 610, lying with- .in the sheet may be moved away from the crossbar 61 to keep the sheet at the desired tension.
  • each element is drilled at one end for the reception of an adjusting screw 65 which bears against the frame member, and the frame member is drilled to provide openings for the reception of bolts 66, each of which holds in place an L-shaped clamp 67.
  • One leg of this clamp bears against the frame member and the other overlies the cross-bar 61 of an element.
  • the latter end of the clamp is slotted as indicated at 68 to straddle the adjusting screw 65.
  • a bracket 69 Secured to the end of the cross-bar 61 through which the adjusting screw 65 passes is a bracket 69 which extends along the frame member and is provided with an adjusting screw.70 bearing on the frame member.
  • the frame member is drilled with a number of closely spaced openings for the reception of the clamping bolts 66 so that the elements 60 may be secured in any desired position along the frame within reasonable limits.
  • the adjustment screw '70 carried by the bracket 69.
  • Turning the adjustment screw 65 serves to swing the element in ,a plane transverse to the long axis of the tank and the clamp 67 permits the element to be secured and .held rigidly in any desired position of adjustment.
  • One longitudinal member 62 of the frame is clamped to and in direct electrical contact with the negative bus bar 24, while the other frame member rests on a strip of insulation 71 which lies on top of the positive bus bar 23.
  • each element 60 is so positioned between a roll 46 and a roll 73, that the rolls are substantially tangent to planes through the opposite faces of-the element.
  • Each element has a rounded lower end 74 and midway between its upper and lower ends the element is thicker than elsewhere, the bulge being indicated at '75.
  • the foil makes contact therewith over an extended area and current is withdrawn from the foil beneath the solution level. Since the foil contacts with the element over areas which are fairly closely spaced, the current does not flow through the foil in the plane thereof for substantial distances and-those portions of the foilin which current is flowing in their plane lie beneath the solution so that danger of burning is reduced and a saving in power is effected.
  • the element carries a facing sheet, practically one entire surface of each depending loop of the foil extending around a contact element is in electrical contact with the conductive facing of the element below the solution level.
  • the framework of the contact element and also the facing sheet, where one is used, are electrically connected through the bus bar 61 of the element with the negative bus bar.
  • the plating current is withdrawn from portions of the foil or sheet which lie beneath the solution and where no-, facing sheetis used, current flowing through the foil in its plane does not travel for any substantial distance whilewhen a facing sheet is employed on the element, the current flows through the foil at right angles to the surface thereof.
  • the anodes employed offer a substantially rectangular exposure to the foil receiving the deposit and may conveniently be of crude metal and of the form used in refineries. These anodes 76 lie between the loops of the foil and have lugs 77 which rest' on the sides of the tank and support the anodes. The lug of each anode which overlies the negative bus bar is separated there- ⁇ , from by a strip 78 of insulation whfle the other lug rests directly" on the positive bus bar.
  • the anodes employed may be of a width slightly greater than the width of the sheet, the latter being indicated in broken lines 79 in Fig. 13, or the anodes may be of slightly less width than the sheet, as shown in Fig. 14. If all the anodes were wider than the sheet, the sheet would.
  • anodes of both kinds will be used in proper number to insure uniformity, in thickness of the sheet.
  • These anodes may be of the'two standard sizes normally available in any copper refinery, one size being that used for the production of starting sheets and the other, for regular cathodes.
  • the number of anodes is one greater than the number of elements in the group so that there is an anode adjacent the face of each portion of the sheet in each loop. Since metal is deposited on the sheet in the form of a loop which lies between a pair of anodes, it will be evident that if any element is slightly out of adjustment so that one side of the loop lies nearer an anode than the other side,
  • any tendency to produce a heavier plating on the near side will be compensated for by reduced plating on the far side.
  • the loop and anode assembly is so arranged as to occupy little spacelengthwise of the tank and the area of the sheet in that portion of each loop which lies beneath the solution level is approximately the same as'the areas of the submerged portion of the drum so that by the use of the depending loop arrangement, deposition at a rapid rate can be accomplished in a relatively small tank occupying little floor space for the amount plated at a much lower current densityyand as a lower voltage is employed, the power cost is proportionately reduced.
  • the cost per pound of that part .of the final sheet which is made up of metal deposited in the building-up tank is considerably less than the cost per pound of the metal produced on the drum,,a n d in" the present process, thestarting foil is very thin and the great bulk of the final sheet is metal plated on the'starting foil after it leaves the drum.
  • the sheet passes down into the solutionfrom above so that no openings through the walls of the tank are necessary asin certain apparatus with'which we are familiar.
  • the sheet passes into thetank through a side wall, difllcultie's are encountered in making the opening tight against the solution.
  • the sheet pass verti- A further desirableresult obtained by movement of the foil in the manner described is the elimination of variations in plating due to stratification in the electrolyte.
  • the solution at the. top of the tank may contain less metal and more acid than that at the bottom and the temperature 'of the solution may be higher at the top.
  • drum cathode and the loop assembly are arranged in a single tank and the guide and contactcathods are connected electrically in parallel with the drum cathode. With such a unit, it is possible to supply the tank with plating currents of the order of 6,000 to 8,000 amperes and utilize relatively moderate current densities.
  • the cathode drum is in one tank 80, while the loop assembly is in the second tank 81. Also the foil produced on the drum is not led directly to the second tank but wound into a roll, and foil is delivered from such a roll to the second tank.
  • Either arrangement may be used as desired and we contemplate that in'some instances it may be desirable to install a number of tanks containing drum or other types of endless cathodes which will operate to produce thin foils. These foils may then be rolled up and supplied in roll form to the building-up tanks. With this arrangement, the rate of deposition in the buildingup tank is not limited by the speed at whichthe metal can be deposited on the drum.
  • a guide and contact element 82 of special form is used, and this element has a narrow opening through the center of it from top to bottom, the opening being of a size sufficient to permit the passage of a-pair of sheets 83 drawn from supply rolls 84.
  • the sheets 83 receive little or no plating while passing down through this opening.
  • the sheets are separated and led around 'and up the opposite faces of the element. Each of these faces is provided with a conducting Jacing 85 which is in electrical contact with the neg ative bus bar of the cell.
  • Anodes 86 lie one on each side of the element in close proximity to the opposite faces thereof.
  • the apparatus illustrated in Fig. 17 may be used with a slight modification. Where the foils in their upward travel are to be built up to a-relatively great thickness, it may not be'feasible to bend the resulting sheets in their upward travel and the sheets may be led directly upward from the tank to a place where they can be cut off in desired lengths.
  • the cost of the sheets produced by the method and apparatus of this invention is approximately proportional to the weight of metal involved, the cost varies directly with the thickness of the final product, whereas, in the case of rolled sheets, the cost increases out of all proportion to a decrease in thickness.
  • our method as the weight of the sheet increases, a limit is ultimately reached at which the cost is approximately the same as that of producing such sheets by rolling, but for the production of sheet copper of the foil type, our method and apparatus may be employed much more cheaply than the rolling process.
  • thecost of production' by rolling is so high that the use of thin rolled foils is comparatively limited and such foils have not gone into wide commercial use for many purposes for which they would be admirably adapted except for cost.
  • Our process accordingly, permits the economical production of sheet copper in weights which have never been in widecommercial use up to the present time.
  • the process and apparatus of the invention also make possible the production of foils in wide widths without an increase in cost out of proportion to 'the weight of metal present.
  • the cost of rolled foils of a given weight increases with the width, due to the increase in the amount of scrap produced.
  • Our process may be used for producing foils in any width' desired, although for practical purposes, foils will not be produced by our process in widths exceeding 3-1 inches which is the maximum possible instandard refining tanks.
  • the cost of foil per pound of metal is notsubstantially affected in our process either by gauge 'or width.
  • the sheets produced in our equipment may be usedin subsequent rolling operations.
  • our invention makes pos-- sible continuous refining, the final product being a roll of continuous refined sheet metal of indefinite length produced from crude metal, instead of a plurality -of separate cathode sheets requiring individual handling.
  • This product may e produced in a refinery at the same output rate fas' that at which refined cathodes are produced under similar conditions and in the same tanks.
  • electrolytic refining as now carried on, the product is a cathode of limited size and is not a final product but an intermediate, which is not useful for any purpose except by being converted into other forms by such operations as casting and rolling.
  • crude metal may be transformed into afinal commercial product per content because ,the soluble anodes not only go into solution at a rate proportionate to the rate of deposition but they are also attacked and dissolved by the chemical actionof the free acid i in the electrolyte. Accordingly, a certain number .of'liber'ator tanks'arenecessary in the tank house to keep the copper contentin the electrolytetrom increasing.
  • the product produced by our process is a final commercial product of sufi'icient uniformity so that it-may be converted directly into rolled copper without the necessity of an intermediate casting operation and many rolling operations.
  • the economic advantages of the new process and apparatus will, therefore, be apparent.
  • a process of producing sheet metal comprises moving a pair of foils in face contact relation downward into a plating cell, separating the foils-and advancingthern upward in spaced relation, and depositing metal on the 'upwardl moving porton only of each foil.
  • Apparatus for electrodeposition which comprises aplating tank, an anode therein, a plateone face of the element and in contact therewith and upwardly along and in contact with the other face of'the element, the upwardly traveling portion of the foil lying adjacent the anode, and said element having an electrocon'ductive surface with which said foil contacts.
  • Apparatus for electrodeposition wh-chcomprises a plating tank, an anode therein, a stationary plate-like guide and contact element in the tank, .said' element having an electroconductive surface,nieans for moving a foil 'in contact with the element down and in contact with one face of the element, around the lower end thereof, and upwardly along and in'contact with the other face thereof, and means for withdrawing plating current through the foil in contact with said surface of the element.
  • Apparatus for electrodeposition which comprises a plating tank, a pair of plate-lke anodes disposed in face to face relation therein, a guide and contact element of generally rectangular form between the anodes, this element having electroconductive areas, means for moving a foil contact with the element down and in contact w thone face thereof, around the lower end, and up and in contact with the other face, and means for withdrawing plating current from said foil through said areas.
  • a plating tank having a positive and a negative bus bar on opposite sdes thereof, a frame supported above the tank and having a portion of conductive mabus bar, a plurality of negative contact elements supported on said frame and electrically connected to said portion of the frame, a plurality of .terial in electrical connection with the negative with said elements, said foil having the form of loops lying between said anodes.
  • a plating tank a guide element supported above the tank walls tb hang, down into the solution in the tank, and means for adjusting the position of the element about a plurality of axes.
  • a plating tank a guide element supported above the tank walls to hang down into the solution in the tank, means for adjusting the position of the element about an axis and also along the tank, and means for securing the element in adjusted position.
  • a process for producing sheet metal which comprises mounting a plurality of anodes in spaced relation in an electrolytic tank, said anodes lying in a series along the tankwith each anode having an effective area of generally rectangular shape beneath the solution level in the tank and with the faces of said anodes lying across the tank and advancing a cathode sheet of indefinite length past said anodes successively, said sheet moving edgewise and continuously opposing each face of each anode without pass'ng beneath any anode. 4
  • Apparatus for electrodeposition which comprises an electrolytic tank, a pair of anodes in said tank in spaced face-to-face relation, said anodes lying across the tank and having effective areas of generally rectangular shape lying beneath the solution levelin said tank, means for advancing a foil through said tank, means for guiding the foil in opposition to both faces of each anode without said foil passing between said anodes and the bottom of the tank, and 'means ,for
  • An apparatusfor electrodeposition which comprises an electrolytic tank, a pair of anodes in said tank in spaced face-to-face relation, said anodes lying across the tank and having an effective area of generally rectangular shape beneath the solution level in the tank, means for I advancing a foil through said tank, meansfor guiding the metallic foil along a tortuous path in which the foil passes successively in opposition and substantially parallel to each face of eachanode without passing between an anode and the bottom of the tank, and means for withdrawing plating current from said foil.
  • a plating tank a plurality of plate anodes mounted vertically across said tank in a spaced series extending lengthwise of said tank, means for moving a foil of indefinite length through said tank, means for guiding the moving foil to give it the form of depending loops entering said tank and lying between adjacent anodes, saidfoil in its movement opposing successively each face of each anode without passing beneath any anode, and'receiving a deposit'on one face only in its movement, means for supplying current to said anodes, and means for withdrawing plating current from said foil at a plurality of points along said tank.
  • Apparatus for electrodeposition which comprises a plating tank, a I plurality of anodes mounted vertically in said tank in a spaced series extending lengthwise of said tank, means for moving a foil of indefinite length through said tank, means for guiding the moving foil to give it the form of depending loops entering said tank and lying between adjacent anodes, said foil in its movement opposing successively each face of each anode except the first and last in the series without passing beneath any anode, and receiving a deposit on one face only in its movement, means for supplying current to said anodes, and means series extending lengthwise of said tank, driven.
  • said foil in its movement successively opposing each face of each anode without passing beneath any anode, and receiving a deposit on one face onlyin its movement, a roll at the top of each loop adapted to be driven to assist in the advance of the foil, means for supplying current to said anodes, and meansfor withdrawing current from said foil.
  • the 21 A-methodof el'ectrodeposition which com- 3 prises advancing a foil through a plating cell containing a plurality of anodes mounted vertically across the tank in a spaced series, guiding the moving foil to produce downwardly extending loops with the foil successively opposing each face of each anode, without passing beneath any anode, supplying current to the anodes, and withdrawing current from the foil at aplurality of spaced points along its length.
  • Apparatus for electrodepos'ition which comprises a plating tank, a plurality of anodes mounted in said tank in a series, said anodes lying face to face with spacesbetween, means for advancing a foil through the tank, means for guiding the moving foil to give it the form of a plurality of loops lying in the spaces between'the anodes with the foil passing underneath no anode in the series and opposing each faceof each anode in its movement, means for supplying current to said anodes, and means for withdrawing plating current, from the foil.
  • a plating tank provided with a positive bus bar and a negative bus bar, a frame supported above the tank and having a portion of conductive material in electrical connection with the negative bus bar, a plurality of guide elements on said frame, a plurality of anodes mounted in the tank and in electrical connection with the positive bus bar, said anodes alternating with said elements, means for withdrawing plating current from said foil, said means being in electrical connection with said negative bus bar, and means for moving a foil through said tank and in contact with said elements, said foil beingguided'by said elements to form loops with each face of each loop opposed by one face of an anode.
  • a plating tank provided with a positive bus bar and a negative bus bar
  • a frame supported above the tank and'having a portion of conductive material in electrical connection with the negative bus bar, a plurality of negative contact elements mounted ,on said frame in electrical connection with said portion thereof, a plurality of anodes mounted in the tank and in electrical connection with the positive bus bar, and means for moving a foil through said tank and in contact with said elements, said foil having the form of loops lying between said anodes with each face of each anode opposed by one side of a loop.

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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)
  • Electrolytic Production Of Metals (AREA)
  • Electroplating Methods And Accessories (AREA)
US507126A 1931-01-07 1931-01-07 Process and apparatus for producing sheet metal electrolytically Expired - Lifetime US1952762A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE385463D BE385463A (de) 1931-01-07
US507126A US1952762A (en) 1931-01-07 1931-01-07 Process and apparatus for producing sheet metal electrolytically
FR729299D FR729299A (fr) 1931-01-07 1932-01-06 Procédé et appareil pour obtenir électrolytiquement du métal en feuille
DEA64661D DE642373C (de) 1931-01-07 1932-01-07 Verfahren und Vorrichtung zur elektrolytischen Verstaerkung von Metallblechen
GB534/32A GB395002A (en) 1931-01-07 1932-01-07 Process and apparatus for producing sheet metal electrolytically

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US507126A US1952762A (en) 1931-01-07 1931-01-07 Process and apparatus for producing sheet metal electrolytically

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US1952762A true US1952762A (en) 1934-03-27

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BE (1) BE385463A (de)
DE (1) DE642373C (de)
FR (1) FR729299A (de)
GB (1) GB395002A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439858A (en) * 1943-08-28 1948-04-20 Carnegie Illinois Steel Corp Conductor roll
US2554943A (en) * 1945-10-25 1951-05-29 Bethlehem Steel Corp Electroplating apparatus
US2587630A (en) * 1949-07-28 1952-03-04 Sulphide Ore Process Company I Method for electrodeposition of iron in the form of continuous strips
US2790756A (en) * 1952-07-29 1957-04-30 Charles C Cohn Method and apparatus for electrolytic treatment of slide fasteners
US2911346A (en) * 1952-07-29 1959-11-03 Samuel L Cohn Apparatus for electrolytic treatment of slide fasteners
US2975110A (en) * 1957-08-12 1961-03-14 Elmore S Metall Ag Process for the production of electric conductor material from copper having high conductivity
US3332128A (en) * 1964-04-18 1967-07-25 Mitsui Mining & Smelting Co Apparatus for peeling electro-deposited metals from cathode plates
US3674656A (en) * 1969-06-19 1972-07-04 Circuit Foil Corp Bonding treatment and products produced thereby
US4529486A (en) * 1984-01-06 1985-07-16 Olin Corporation Anode for continuous electroforming of metal foil
JPS624894A (ja) * 1985-07-01 1987-01-10 Fukuda Kinzoku Hakufun Kogyo Kk 電解銅箔の製造装置
US4647345A (en) * 1986-06-05 1987-03-03 Olin Corporation Metallurgical structure control of electrodeposits using ultrasonic agitation
US4652346A (en) * 1984-12-31 1987-03-24 Olin Corporation Apparatus and process for the continuous plating of wide delicate metal foil
US4778571A (en) * 1986-12-12 1988-10-18 Furukawa Circuit Foil Co., Ltd. Method of making electrolytic metal foil and apparatus used therefor
CN113005485A (zh) * 2021-02-22 2021-06-22 赣州逸豪新材料股份有限公司 一种铜粉防脱落的表面处理装置及其加工工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461046A (en) * 1966-05-06 1969-08-12 Anaconda Co Method and apparatus for producing copper foil by electrodeposition

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439858A (en) * 1943-08-28 1948-04-20 Carnegie Illinois Steel Corp Conductor roll
US2554943A (en) * 1945-10-25 1951-05-29 Bethlehem Steel Corp Electroplating apparatus
US2587630A (en) * 1949-07-28 1952-03-04 Sulphide Ore Process Company I Method for electrodeposition of iron in the form of continuous strips
US2790756A (en) * 1952-07-29 1957-04-30 Charles C Cohn Method and apparatus for electrolytic treatment of slide fasteners
US2911346A (en) * 1952-07-29 1959-11-03 Samuel L Cohn Apparatus for electrolytic treatment of slide fasteners
US2975110A (en) * 1957-08-12 1961-03-14 Elmore S Metall Ag Process for the production of electric conductor material from copper having high conductivity
US3332128A (en) * 1964-04-18 1967-07-25 Mitsui Mining & Smelting Co Apparatus for peeling electro-deposited metals from cathode plates
US3674656A (en) * 1969-06-19 1972-07-04 Circuit Foil Corp Bonding treatment and products produced thereby
US4529486A (en) * 1984-01-06 1985-07-16 Olin Corporation Anode for continuous electroforming of metal foil
US4652346A (en) * 1984-12-31 1987-03-24 Olin Corporation Apparatus and process for the continuous plating of wide delicate metal foil
JPS624894A (ja) * 1985-07-01 1987-01-10 Fukuda Kinzoku Hakufun Kogyo Kk 電解銅箔の製造装置
JPH0156153B2 (de) * 1985-07-01 1989-11-29 Fukuda Kinzoku Hakufun Kogyo Kk
US4647345A (en) * 1986-06-05 1987-03-03 Olin Corporation Metallurgical structure control of electrodeposits using ultrasonic agitation
US4778571A (en) * 1986-12-12 1988-10-18 Furukawa Circuit Foil Co., Ltd. Method of making electrolytic metal foil and apparatus used therefor
CN113005485A (zh) * 2021-02-22 2021-06-22 赣州逸豪新材料股份有限公司 一种铜粉防脱落的表面处理装置及其加工工艺
CN113005485B (zh) * 2021-02-22 2022-03-29 赣州逸豪新材料股份有限公司 一种铜粉防脱落的表面处理装置及其加工工艺

Also Published As

Publication number Publication date
FR729299A (fr) 1932-07-21
BE385463A (de)
GB395002A (en) 1933-07-07
DE642373C (de) 1937-03-05

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