JP3517232B1 - Method for producing double metal thin tube - Google Patents

Abstract

An object of the present invention is to provide a double metal thin tube in which a first layer is made of a metal such as Au, Ag, and Cu, and a second layer is made of a metal different from the above metal, and a method of manufacturing the double metal thin tube. As a method for manufacturing a double metal thin tube, an electroformed layer 2 made of one of Au, Ag, and Cu is formed around at least one mirror-finished metal core wire by electroforming. Further, on the electroformed layer 2, an electroformed layer 3 made of a metal different from the metal is formed by electroforming to form a rod-shaped electroformed body, and the metal core wire is drawn or extruded from the electroformed body. It is characterized in that the double metal thin tube 1 is manufactured.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a double metal tube. [0002] In general, metal plating is used for film processing, and is used for accessories of metal products and rust prevention. In recent years, using such an electroforming technique, an electroformed layer is formed on a wire, and the wire is extracted from the electroformed layer to manufacture a metal electroformed tube. [0003] In Japanese Patent No. 3308266, a rod-shaped electroformed body is formed by depositing a metal around one wire by electroforming, and the wire is drawn out of the electroformed body without melting or the like. Alternatively, a method is disclosed in which the wire is removed from the electroformed body by extrusion to produce a ferrule. Further, Japanese Patent No. 3461177 discloses an electroforming apparatus for manufacturing a thin tube capable of efficiently and efficiently manufacturing a thin metal tube such as a ferrule. [Patent Document 1] Japanese Patent No. 3308266 [Patent Document 2] Japanese Patent No. 3461177 DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As described above, a metal pipe such as a ferrule is formed by electroforming. As a manufacturing method, the above-mentioned Patent 3308
As disclosed in Japanese Patent No. 266, there is known a method of forming a metal tube by forming an electroformed layer of copper or nickel on a core wire of stainless steel or the like and extracting the core wire from the electroformed layer. . However, an electroformed layer of copper, nickel or the like is formed on the core wire, an electroformed layer of another metal is formed on the electroformed layer, and an electroformed layer of the double formed electroformed layer is formed. There is no known method of manufacturing a double metal tube by extracting a core wire from a body. Furthermore, an electroformed layer made of a metal such as Au, Ag, or Cu is formed on a core wire such as stainless steel by electroforming, and further, an electroformed layer made of a metal different from the metal is formed on the electroformed layer by electroforming. There is no known method for producing a double metal tube by forming a layer and extracting a core wire from an electroformed body comprising the double electroformed layer. This is because, in order to obtain a double metal tube, when a core wire is to be pulled out from an electroformed body made of a double formed electroformed layer, a first electroformed layer made of a metal such as Au, Ag, or Cu is formed. Breakage or separation of the first electroformed layer and the second electroformed layer results in a metal tube consisting of only the second electroformed layer, resulting in a double metal tube. There were inconveniences such as not being provided. An object of the present invention, in view of the above problems, on the stainless wire to form a A u or Ranaru first layer electroformed layer, further, the first layer of the electroformed layer forming a second layer of electroformed layer made of different that Ni and the first layer of metal on top, double metal capillary to obtain a double metal pipe by pulling the stainless core wire consisting electroforming body from the double electroformed layer It is to provide a manufacturing method of. [0007] The present invention has been made in order to solve the above problems.
The following measures were adopted. The first means is a double metal
As a method of manufacturing a thin tube, at least one mirror-finished
Around the stainless steel core wire
5 to 1 mm, 0.05 to thickness to form a A u or we made electroformed layer of 5 [mu] m, N by further to the electroformed layer on the electroforming
i to form a rod-shaped electroformed body,
By pulling out the stainless steel core wire from the electroformed body
It is characterized in that a double metal thin tube is prepared. According to the first aspect of the present invention, at least
Around the mirror-finished stainless steel core wire.
Cast by forming an inner diameter of 0.05 to 1 mm, A u or we made electroformed layer having a thickness of 0.05 to 5 [mu] m, further said conductive picolinimidate
On top, an electroformed layer made of Ni is formed by electroforming
Forming an electroformed body of
The stainless steel core wire can be easily pulled out, and a double metal thin tube that has not been obtained can be easily manufactured . An embodiment of the present invention will be described with reference to FIGS. FIG. 1A is a perspective view showing a configuration of a double metal thin tube of the present invention, and FIG.
It is a side view of a heavy metal thin tube. [0012] In these figures, double metal capillary made by 1 electroforming, 2 electroforming internal diameter 0.05 to 1mm formed by a thickness of 0.05 to 5μm of A u
Pressurized et consisting electroformed layer, 3 is N i or we made electroformed layer different from the second metal electroformed layer 2 on electroformed formed by electroforming layer, A is opened a portion of the double metal tubule 1 This is the part shown. FIG. 1B shows an example of the dimensions of each part of the double metal thin tube. FIG. 2 is a view showing an outline of a manufacturing process of the double metal thin tube 1 of the present invention. In the production of the double metal thin tube, first, as shown in FIG. 2A, a mirror-finished stainless steel core wire 4 having a diameter of 0.05 to 1 mm is prepared. Next, as shown in FIG. 2 (b), in order to electroforming around the stainless steel core wire 4, immersing the stainless core wire 4 to the electroforming bath of the known capillary manufacturing electroforming apparatus, not shown. In this tubule manufacturing electroforming apparatus, electroforming by forming a stainless <br/> core thickness 0.05 to 5μm around 4 A u or we made electroformed layer 2. Next, as shown in FIG.
Wherein the thin tube manufacturing electroforming apparatus using a capillary manufacturing electroforming apparatus shown in different Figures 3, around the electroformed layer 2, to form the N i or we made electroformed layer 3 by electroforming. Next, after the electroforming, as shown in FIG. 2 (d), the electroformed body in which the double electroformed layers 2 and 3 were formed on the stainless steel core wire 4 was taken out from the electroforming apparatus for manufacturing a thin tube. The stainless steel core wire 4 is pulled out from the electroformed body. As a result, as shown in FIG. 2E, a double metal thin tube in which the electroformed layer 3 made of Ni is formed on the electroformed layer 2 made of Au can be obtained. FIG. 3 is a view showing an example of an electroforming apparatus for manufacturing a thin tube used for forming the electroformed layer 3 on the electroformed layer 2 formed around the core wire 4 by electroforming. . In the electroforming apparatus for manufacturing a thin tube, 5 is formed in a donut shape (annular shape), and a cross section in a radial direction is formed in a substantially U shape.
The electroforming tank 7 filled with the electrolytic solution 6 is provided outside the electroforming tank 5 to filter the electrolytic solution 6 overflowing from the electroforming tank 5 and store the electrolytic solution 6 heated to a predetermined temperature. The overflow tank, 71 is a heater for heating the electrolyte 6 stored in the overflow tank 7 to a predetermined temperature, and 8 is rotated with the rotation of the turntable 9 to support the core holder 10 and to move the inside of the electroforming tank 5. Several tens (eg, 60) umbrella-shaped arms 9, which are arranged in a radial direction and rotate in the circumferential direction, are formed around the core wire 4 while making one round in the electroforming tank 5. The turntable 10 is rotated by the revolving motor 13 at a very low speed (for example, about 4 hours per revolution) so that the electroformed layer 3 having a predetermined thickness is formed on the surface of the electroformed layer 2.
Are supported by the arm 8, are supported in a radial direction of the electroforming tank 5 in a radial direction of the electroforming tank 5 while supporting the core wire 4, and are arranged radially around the electrolytic solution 6 in the electroforming tank 5. A core wire holder 11 provided so as to move, an anode case 11 containing an electroformed material (for example, nickel balls having a diameter of 5 mm to 6 mm), and 12 an electroformed layer 3 formed uniformly on the surface of the electroformed layer 2 In order to make the core wire 4 rotate (for example, 20 to
A rotation motor for rotating the turntable 9, a lifting motor for lifting and lowering the lifting arm 15, and an arm 15 for attaching or detaching the core holder 10 to or from the arm 8. A lifting / lowering arm for raising / lowering 8 from the electroforming tank 5, a filter 16 for filtering the electrolyte 6 stored in the overflow tank 7 to remove impurities and circulating the electrolyte 6 to the electroforming tank 5, and 17 for the inside of the electroforming tank 5. A reflux pump 18 for convection of the electrolyte 6 to make the electrolyte 6 uniform, and a fixed side 18 wired from a current controller 19 and a movable side wired from a core holder 10 rotating in the electroforming tank 5. Slip ring for electrical connection with the
9 is controlled by a computer 21 and arranged in the donut-shaped (annular) electroforming tank 5, several tens of sets (for example,
A current control device 20 for controlling the current for each core wire 4 supported by the core wire holders 10 of the 60 sets, and 20 is a power supply device (for example,
DC8V, 100A rating), 21 is the current controller 19
For each core wire 4 according to a predetermined current pattern characteristic.
This is a computer provided for instructing the value of the current flowing through each core wire, and instructing to interrupt the current flowing through each core wire 4 when a predetermined current integrated value is reached. In the electroforming apparatus for manufacturing a thin tube, the arm 8 having the electroformed layer 3 formed on the surface of the electroformed layer 2 is used as the core wire holder. When the attachment / detachment point is reached, the lifting / lowering motor 13 rotates, and the lifting / lowering arm 15 rises accordingly, and is lifted above the surface of the electrolytic solution 6 in the electroforming tank 5. When the arm 8 is raised, the core holder 1 supporting the core 4 on which the electroformed layer 3 is formed from the arm 8.
0 can be removed. When the core wire holder 10 is removed from the arm 8 and the core wire holder 10 with the core wire 4 attached thereto for a new electroforming is attached to the arm 8, the elevating motor 15 rotates again, and the elevating arm 15 descends. The arm 8 is immersed in the electrolytic solution 6 in the electroforming tank 5 to start electroforming. During the electroforming process, each core wire 4 is rotated by a rotating motor 12.
During rotation (revolution) in the donut-shaped electroforming tank 5 in the circumferential direction, the electroforming layer having high roundness and high coaxiality is formed on the surface of the electroforming layer 2. 3 can be formed. Each core wire 4 is electrically connected from the negative side of the power supply device 20 via a current control device 19, a slip ring 18, an arm 8, and a core wire holder 10, while the anode case 11 is It is electrically connected to the plus side. As a result, while each core wire 4 is rotated in the donut-shaped electroforming tank 5 and makes one revolution (revolution) in the electroforming tank 5, the core wires 4, 4
The current flowing between the electroformed layer 2 and the anode case 11 is controlled, so that the electroformed layer 3 having a predetermined thickness can be formed on the surface of the electroformed layer 2.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view and a side view showing a configuration of a double metal thin tube of the present invention. FIG. 2 is a diagram showing an outline of a manufacturing process of a double metal thin tube of the present invention. FIG. 3 is a view showing an example of an electroforming apparatus for manufacturing a thin tube used for forming an electroformed layer 3 by electroforming on an electroformed layer 2 formed around a core wire 4; DESCRIPTION OF SYMBOLS 1 Double metal thin tube 2 First electroformed layer 3 Second electroformed layer 4 Core wire 5 Electroformed tank 6 Electrolyte solution 7 Overflow tank 71 Heater 8 Arm 9 Turntable 10 Core wire holder DESCRIPTION OF SYMBOLS 11 Anode case 12 Rotating motor 13 Revolution motor 14 Elevating motor 15 Elevating arm 16 Filter 17 Reflux pump 18 Slip ring 19 Current control device 20 Power supply device 21 Computer

Claims (1)

(57) [Claim 1] At least one mirror-finished step
Around inner core wire by electroforming 0.05 to 1 inner diameter
mm, A u or we made electroformed layer of 0.05 to 5μm thickness of
Formed on the electroformed layer by electroforming.
Forming a rod-shaped electroformed body by forming an electroformed layer,
Double metal by pulling out the stainless steel core wire from
A method for producing a double metal thin tube, characterized by producing a thin tube.
Law.