JPS5831398B2 - Manufacturing method of corrugated waveguide - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a corrugated waveguide.
Alternatively, it is performed using a nickel electroforming method.

Conventionally, corrugated waveguides were manufactured using brazing,
Previously, copper of different diameters and copper alloy plates were joined using soldering and welding, but this method required a long processing process.
Moreover, there is a drawback that cracks are likely to occur in the finished product at the joint between the two joining members due to vibration, heat, impact, or the like.

The present invention aims to improve the problems in the conventional manufacturing method, and attempts to manufacture a corrugated waveguide using copper or nickel electroforming.

The present invention will be explained below with reference to the drawings.

Figure 1 shows the core metal 1 before copper or nickel electroforming, 2a and 2b are flanges formed from copper or copper alloy plates, and 3-1, 3-2... have a hole in the center. The aluminum or aluminum alloy plate shown in Fig. 1 is 3-1, . The diameter increases in the order of 3-2...

4-1.4-2... are copper or copper alloy plates, and like the above aluminum or aluminum alloy, the diameters increase in the order of 4-1.4-2... .

This mandrel 1 is made of aluminum or aluminum alloy plate and copper or copper alloy plate and is attached to flanges 2a, 2.
The nuts 6a and 6b for fastening are stacked alternately between the holes 6a and 6b, and the core frame 5 made of aluminum alloy is passed through the hole.
It is integrated.

The mandrel is processed through the plating steps I to E shown in FIG.

In the middle of this process, copper or nickel plating is applied to the core metal 1 to a required thickness (for example, 0.5 to 3 inches), and then in step E, the tightening nut 6a used in FIG.
6b is removed, and the core metal frame 5 made of aluminum or aluminum alloy and the plates 3-1, 3-2, . . . are dissolved in an alkaline solution to complete the waveguide 7.

FIG. 3 shows a corrugated waveguide 7 manufactured according to the present invention, in which most of the aluminum or aluminum alloys 3-1, 3-2, etc. are melted, and the copper or copper alloy 4- 1, 4-2... are the remaining aluminum or aluminum alloy 3- as shown in the figure.
A copper or nickel plating layer 8 remains in the remainder of 1.3-2.

This plating layer 8 is integrally connected to the flanges 2a and 2b, resulting in one corrugated waveguide 7.

With this invention as described above, the copper or nickel plating layer is connected to the flange, and the copper or copper alloy remains inside in the form of comb teeth, thereby completing the corrugated waveguide.

Therefore, there is no work such as brazing, soldering, or welding as in the past, and the flange and the plating layer are combined by plating, and the plating layer and the comb-like copper,
Alternatively, since the copper alloy portion is also bonded by plating, a waveguide with strong strength can be obtained.

In addition, in the embodiment, a case was shown in which plates with different diameters were stacked alternately, but plates with the same diameter may be stacked.

Furthermore, the shape of the plate is not limited to a circle, but may be rectangular.

[Brief explanation of the drawing]

Figure 1 is a diagram for explaining the mandrel that is a feature of this invention, Figure 2 is a diagram showing the manufacturing process of this invention, and Figure 3 is a diagram showing a corrugated waveguide manufactured by this invention. 1 is a metal core, 2a and 2b are flanges, 3 is an aluminum or aluminum alloy plate, 4 is a copper or copper alloy plate, 7 is a corrugated waveguide, and 8 is a copper or nickel plating layer. Note that the same or equivalent parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1. Alternately stack aluminum or aluminum alloy plates with holes in the center and copper or copper alloy plates with holes in the center, and then make holes in the center on both sides of the stack. After passing the aluminum or alloy mandrel frame through the hole in the center and tightening it with the nuts provided on both sides, the integrated mandrel is plated with copper or nickel to the required thickness. A method for manufacturing a corrugated waveguide, in which the flange and the copper or nickel plating layer are joined by melting aluminum or aluminum alloy, and the steel or copper alloy plate is left in the shape of a comb.