JPS5873919A - Method of producing rivet type composite electric contact - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to the use of materials 9 that are difficult to process, such as Mug-We%A.
Manufacture of rivet-type composite electrical contacts that can be caulked using OII point material tubes made of materials such as g-Cd0, Mug-8aO, Mug-CdO-NiO, Mug-8nO-IaO, etc., which are prone to cracking due to header processing. Regarding the method.

As is well known, characteristics required for electrical contacts include resistance to wear, resistance to welding, and stability in II contact resistance. Normally, a hard material is required to improve mechanical and electrical consumption, and to improve welding, metal oxides are dispersed in materials such as Ag+Cu with good acoustic conductivity.

However, hard materials generally have poor plastic workability compared to soft materials, and materials in which metal oxides are dispersed at high concentrations have even worse workability; Dispersed materials were not generally used because they were more likely to crack during header processing.

By the way, these high-concentration oxide-dispersed materials can also be processed into raw materials or wire rods by hot processing. Also, when header processing is performed on composite materials, because the bonding interface is not flat, a thin portion of the KII point metal layer is created locally. For this reason, the thickness of the contact material must be determined in advance! ! It's so thick]
Since we are also pasting 20-30 inches thick,
It's not worth it.

The present invention has been made in consideration of the above circumstances, and consists of forming the head of a II point tube-covered bed made of all or a part of a workable material by heat-treating it in advance to approximately the same size; After that, the base material pipe of the rivet leg made of WJK material with good plastic workability is brazed to the bottom of this contact material.YtII! #
The present invention provides a method for manufacturing a rivet-type composite electrical contact using mold.

Embodiments of the method for manufacturing a rivet-type composite electrical contact according to the present invention will be described in detail below.

(No. 111111g@) Below as shown in Figure 1! 1 was filled with powder made by mixing Ag powder with 25 volumes of graphite powder, and then the top! l12
First, a disk-shaped contact material 311r with a diameter of 3 cm and a thickness of α7 cm as shown in FIG. 14 many, 11::.

After inserting and aligning the contact material 3 into the holes 5, press it as shown in Fig. 15!1ldK and adjust the shape of the contact material 3. Another graphite mold 4'
Immediately after inserting and sintering into the many holes 5 of the rivet and sintering it, the size is approximately the same as the rivet base! Ll■, a contact material 3' with a thickness of 61 mm is made, and then the first rj! As shown in Jf, the upper end [Ag
The diameter L 5 m of the steel to which the solder 7 is welded.

Insert the base material 8 of the rivet leg part with a height of 3 m, support it with the graphite plate 9 and put it in the furnace,
' and the base material 8 of the rivet leg are brazed with Ag solder γ to make the rivet lid composite electrical point 10 as shown in Figure 1lll1gK, and finally the contact surface 3' of the contact material 3' as shown in Figure at. a? Finish mold and rivet) IIl1 to complete the electrical writing point 1o.

[Second Embodiment] As shown in Fig. 2aK (back side IM 12t made of plate material 11KCu with 27 volumes of 8nOs dispersed in Ag,
The laminated composite plate 13 is hot-rolled to form a 1-thick composite strip 13' as shown in FIG. Diameter 3mm as shown
The disk-shaped composite contact material 141i □ is made 9, then the lever composite contact material 14t - shown in Figure 2 - is lined up and heated by one person in the black 8114 holes, and then heated. −
As shown, the shape of the first joint contact material 14 is adjusted by compressing it to a diameter of 11 cm and a thickness of 19 cm, which is approximately the same size as the rivet WRIl.
4■ Composite contact material 14' made), but! 1ll12 figure fK
As shown, in the thin hole 6 below the hole 5 of the graphite 514', a diameter 1 made of copper with Ag solder 7t-111 bonded to the upper end in advance.
．． 5 Insert the base material 8 of the rivet leg with a diameter of 2.5 mm, support it with the graphite plate 9, put it in the furnace, and repeat) 11 parts of the composite point material 14' and the base of the rivet leg. Braze the material with sthg wax 7 and make the stripes fv! Make a rivet type composite electrical contact 1- as shown in Jg, and connect the second
tlJhKAs shown, contact surface 14'aYt of contact material 14'
The final product is molded to complete the rivet type composite electrical contact 14'.

It should be noted that the contact material in the I11F combined electrical contact produced by the method of manufacturing a rivet-type composite electrical IlI point of the present invention is not the difficult-to-process material of the above embodiment, but is made of Ag.
Also, use the base material as the base material.

Sn, In, Mu, Mg, Ni, Zn, Cu.

Metal oxide of Bi, Fe or Mo, W
.

Refers to a metal pipe made of a difficult-to-process material containing at least 5 iss of Ti, Ni, B, Ca, Co or a sono compound in terms of pipe volume ratio.

As can be seen from the above explanation, the rivet type composite electric 1 of the present invention
The manufacturing method for the first generation is to preliminarily re-penetrate the contact material made of all or part of the difficult-to-process material, heat-treat it to approximately the same size as a millimeter, and then mold it into the 11-piece material. Since the base material tube of the rivet leg is brazed to the bottom surface of the material, which is made of a material with good plastic workability, there is no need to process the header as in the conventional method, and the contact material has a finish that smooths the final contact surface. Rivet-type composite electrical contacts made of difficult-to-process materials with good quality and no cracking because only molding is required.
You can get 1 point tube.

In the overlapping #4O* manufacturing method, 11 of the difficult-to-process materials are
Because the 4 materials are heat-treated and molded, the oxides in the 1 material are finely dispersed in the internal structure of the contact material, making the contact resistance of the HA material stable, causing significant wear, and reducing and uniformity. become.

Furthermore, in the manufacturing method of the present invention, even if the contact material is a composite material, it is preformed into a disk-shaped Kr1t shape with approximately the same size as the rivet lll5, and there is no need for header processing. The border is flat.

Therefore, it is not necessary to increase the thickness of the contact metal layer in order to compensate for variations in the thickness of the contact metal layer caused by header processing as in the prior art, and expensive precious metal tubes can be saved.

[Brief explanation of drawings]

1 to 1 are diagrams illustrating an embodiment of the method for manufacturing a rivet-type composite electrical contact of the present invention, and FIG. FIG. l...Lower mold! ----- Upper mold, 3, 3'
------Contact material, 31, -,, -contact surface, 4,
4'----Graphite type, 5...hole, 6・-
・-Thin hole, 7...Mug wax, 8------
Base material, S-----Graphite plate, 10-...I
J pet 111w electrical contact, 11-m-board material, 11-
...-back board, 13---composite board, 13'-------
1 Joint strip plate, 14, 14' ----- Composite contact material, 1
4' Heat*e* 6%・Contact surface, 15-...-Rivet seal composite electric fire point. Applicant Tanaka Kikinzoku Kogyo Kinsha] Figure 2 (9) (h)

Claims (1)

[Claims] Ag or Cul base material and this is KCd, 8n, InMn,
Contains Mg, Ni, Zn, Cu, Bi, re (Dish or metal oxides or Mo, W, Ti, Ni, B, ea, C or their compounds in a volume ratio of at least 15 or more. In the process of manufacturing a rivet-type composite electrical contact having a contact material, it is preliminarily formed into a size equivalent to the head of the one-point pipe rivet by hot field processing, and then one piece of this contact material is formed. Rivet leg part O paste material made of material with good surface Ellability workability is applied by filtering t6cm, 1 脣 1 and t h
IJ 7<・G type composite electrical connection