KR101203697B1 - Multi-layer contact material and manufacturing method therefor - Google Patents

Abstract

The present invention relates to a multi-layered contact material and a method for manufacturing the same, which can easily perform a welding operation without omitting the inefficient work of applying the filler metal on the surface of the base metal.
In order to realize this, the present invention, the first layer consisting of Ag 4.0 ~ 15.5wt%, P 3.0 ~ 8.0wt% and Cu 76.5 ~ 93.0wt%; A second layer made of 100 wt% Ag; And a third layer made of an alloy of any one of an Ag—CdO alloy, an Ag—SnO—InO alloy, or an Ag—Ni alloy.
In the case of the multilayer contact material according to the present invention, it is possible to increase the efficiency by continuously supplying the contact material using a roll.

Description

Multi-layer contact material and its manufacturing method {MULTI-LAYER CONTACT MATERIAL AND MANUFACTURING METHOD THEREFOR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multilayer contact material for manufacturing contact parts that mechanically opens or closes an electrical circuit in electrical devices such as a circuit breaker or a switch, and more particularly omits the inefficient work of applying the filler metal on the surface of the base metal. In addition, the present invention relates to a multi-layered contact material capable of easily performing a welding operation and a method of manufacturing the same.

In general, in order to manufacture a switch, a relay, an electronic switch, a circuit breaker, and the like, a process of bonding the base metal and the electrical contact metal constituting the body of the electrical contact component to each other is required.

In general, a technique using a filler metal is widely used as the interconnection between the base metal and the electrical contact metal.

On the other hand, when looking at the most recent technology for the interconnection of the base metal and the electrical contact metal, as shown in Figure 1, the filler metal 20 having a lower melting point and superior bonding strength than the base metal 10, the base metal ( A brazing joining method is used in which the base metal 10 and the electrical contact metal 30 are firmly bonded to each other by applying heat to the space between the electrical contact metal 30 and the heat treatment.

However, in the conventional bonding technique including the brazing method shown in FIG. 1, since the inefficient operation of applying the filler metal 20 to the space between the base metal 10 and the electrical contact 30 is performed, the base metal ( There is a problem that the process time is delayed in the bonding process between the 10) and the electrical contact (30). In particular, this process time delay under the mass production system has a problem that causes the rise in the cost of manufacturing parts.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and provides a multi-layered contact material and a method of manufacturing the same, which can directly connect an electrical contact to a base material without performing an inefficient operation of applying a filler metal to the base metal. The purpose.

In order to achieve the above object, the first aspect of the present invention is a first layer consisting of Ag 4.0 ~ 15.5wt%, P 3.0 ~ 8.0wt% and Cu 76.5 ~ 93.0wt%, and a second layer consisting of Ag 100wt% And a third layer made of an alloy of any one of an Ag—CdO alloy, an Ag—SnO—InO alloy, and an Ag—Ni alloy.

In addition, in order to achieve the above object, the second aspect of the present invention, the first layer consisting of Ag 4.0 ~ 15.5wt%, P 3.0 ~ 8.0wt% and Cu 76.5 ~ 93.0wt% and Cu 100wt% A second layer and a third layer made of an alloy of any one of an Ag—CdO alloy, an Ag—SnO—InO alloy, and an Ag—Ni alloy are provided.

In addition, in order to achieve the above object, the third aspect of the present invention, the first layer consisting of Ag 4.0 ~ 15.5wt%, P 3.0 ~ 8.0wt% and Cu 76.5 ~ 93.0wt%, Ag 5 ~ 95 wt% And a second layer made of Cu 5 to 95 wt% and a third layer made of an alloy of any one of Ag-CdO alloy, Ag-SnO-InO alloy and Ag-Ni alloy. Provide the material.

According to a preferred embodiment, the Ag-CdO alloy of the third layer of the first to third forms described above is Cd 5 to 20wt%, Sn 0.5 to 3wt%, Ni 0.05 to 0.5wt% and Ag 76.5 to 94.45wt It may be made of %%.

According to a preferred embodiment, the Ag-SnO-InO alloy of the third layer of the first to third forms described above is Sn 2-15 wt%, In 1-10 wt%, Ni 0.05-0.5 wt% and Te 0.05- It may be made of 0.5wt% and Ag 74.5 ~ 99.6wt%.

According to a preferred embodiment, the Ag-Ni alloy of the third layer of the first to third forms described above may be made of 5 to 20wt% Ni and 80 to 95wt% Ag.

In order to achieve the above object, the fourth aspect of the present invention is (a-1) buffing the surface on the first layer consisting of Ag 4.0 ~ 15.5wt%, P 3.0 ~ 8.0wt% and Cu 76.5 ~ 93.0wt% buffing, (a-2) superposing and rolling a second layer of 100 wt% Ag on the surface of the buffed first layer, and then clad bonding (b-1) the Ag-CdO alloy; Buffing the surface on the third layer made of an alloy of any one of Ag, SnO-InO alloy and Ag-Ni alloy, and (b-2) 100 wt% Ag on the surface on the buffed third layer. Overlapping and rolling the second 2b layer, and (c-1) the cladding of the first and second aa layers formed by the steps (a-1) to (a-1), and the The cladding of the third layer and the second b layer formed by the steps (b-1) to (b-2) is overlapped and rolled so that the second a layer and the second b layer are in contact with each other. It provides a multi-layer contact material manufacturing method comprising the step of bonding.

In addition, in order to achieve the above object, the fifth aspect of the present invention is (a-1) the surface on the first layer consisting of Ag 4.0 ~ 15.5wt%, P 3.0 ~ 8.0wt% and Cu 76.5 ~ 93.0wt% (A-2) superposing and rolling a second layer made of 100 wt% Cu on the surface of the buffed first layer and rolling the clad joint; and (b-1) Ag-CdO alloy; Buffing the surface on the third layer made of an alloy of any one of Ag, SnO-InO alloy and Ag-Ni alloy, and (b-2) 100 wt% Ag on the surface on the buffed third layer. Overlapping and rolling the formed second layer 2b, and (c-1) the cladding of the first and second layers formed by the steps (a-1) to (a-2) and the The cladding of the third layer and the second b layer formed by the steps (b-1) to (b-2) is overlapped and rolled so that the second a layer and the second b layer are in contact with each other. It provides a method for producing a multi-layer contact material comprising the step of de-bonding.

In addition, in order to achieve the above object, the sixth aspect of the present invention is (a-1) the surface on the first layer consisting of Ag 4.0 ~ 15.5wt%, P 3.0 ~ 8.0wt% and Cu 76.5 ~ 93.0wt% (A-2) superposing and rolling a second layer of a layer consisting of 5 to 95 wt% of Ag and 5 to 95 wt% of Cu on the surface of the buffed first layer, and laminating the clad bonding; (b-1) buffing a surface on a third layer made of an alloy of any one of an Ag—CdO alloy, an Ag—SnO—InO alloy, and an Ag—Ni alloy; and (b-2) the buffed third Superposing a second layer of 100 wt% Ag on the surface of the layer, rolling and clad bonding the second layer, and (c-1) the first formed by the steps (a-1) to (a-2). The cladding of the layer and the second layer and the cladding of the third layer and the second layer formed by the steps (b-1) to (b-2) are brought into contact with each other. Nesting and rolling Provided is a method of making a multilayer contact material comprising the step of softly clad bonding.

According to a preferred embodiment, in the above-mentioned step (a-2) of the fourth to sixth forms, the cladding can be achieved by holding and hot rolling for 5 to 15 minutes under the conditions of 500 ℃ to 600 ℃. have.

According to a preferred embodiment, in the above-mentioned step (b-2) of the fourth to sixth forms, the cladding may be made by holding and hot rolling for 5 to 15 minutes under the conditions of 700 ℃ to 800 ℃. .

According to a preferred embodiment, in the above-mentioned step (c-1) of the fourth to sixth forms, the clad bonding may be made by holding and hot rolling for 5 to 15 minutes under the conditions of 500 ℃ to 600 ℃. .

1 is a view showing a bonding method of a conventional base metal and the electrical contact metal.
2 is a cross-sectional view showing the internal structure of a multilayer contact material according to the present invention.
3a to 3h are process drawings showing the manufacturing process of the multilayer contact material according to the present invention.
4 is a diagram schematically showing an application example of a multilayer contact material according to the present invention;

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

[Multilayer Contact Material]

2 is a cross-sectional view showing the internal structure of a multilayer contact material according to the present invention.

Referring to FIG. 2, a multilayer contact material 1 according to the present invention is a second layer for clad bonding between a first layer 100 functioning as a welding material and a first layer 100 and a third layer 300. The layer 200 and the third layer 300 serving as the contact material are sequentially stacked to form an integral structure. Specifically, the multilayer contact material 1 is composed of Ag 4.0-15.5 wt%, P 3.8-8.0 wt%, and Cu 76.5-93.0 wt%, and the first layer 100 serving as a welding material and Ag 100 wt%. Made of an alloy of any one of Ag-CdO alloy, Ag-SnO-InO alloy, and Ag-Ni alloy, the second layer 200 serving as a bonding material between the first layer 100 and the third layer 300. And is constituted by a third layer 300 which functions as a contact material. According to a preferred embodiment, the second layer may be constituted by an alloy of 100 wt% Cu or Ag 5 to 95 wt% and Cu 5 to 95 wt% instead of 100 wt% Ag.

The first layer 100 functions as a welding material for joining with the base metal (for example, metal of copper, silver, tungsten material) constituting the body of the electrical opening and closing component. The Ag component included in the first layer 100 is added to impart toughness to the junction between the base metal and the multilayer contact material and to improve the plastic working of the first layer 100. In addition, the P component included in the first layer 100 is added to perform a self flux action of removing oxides on the base metal surface to enable welding with the base metal without using a flux. .

The second layer 200 is a bonding material for bonding the first layer 100 and the third layer 300 to each other. In addition, the second layer 200 penetrates into the first layer 100 during clad bonding by heat treatment between the base metal and the first layer 100 to improve the weldability of the first layer 100. In addition, the second layer 200 also serves to improve electrical conductivity and thermal conductivity between the first layer 100 and the third layer 300.

The third layer 300 serves to open and close the current path.

According to a preferred embodiment, the third layer 300 may be made of an alloy of any one of an Ag—CdO alloy, an Ag—SnO—InO alloy, and an Ag—Ni alloy.

According to a preferred embodiment, the Ag-CdO alloy of the third layer 300 may be composed of cd 5 ~ 20wt%, Sn 0.5 ~ 3wt%, Ni 0.05 ~ 0.5wt% and Ag 76.5 ~ 94.45wt%.

According to a preferred embodiment, the Ag-SnO-InO alloy of the third layer 300 is Sn 2 ~ 15wt% and In 1 ~ 10wt%, Ni 0.05 ~ 0.5wt%, Te 0.05 ~ 0.5wt% and Ag 74.5 ~ 96.9 It may be made of wt%.

According to a preferred embodiment, the Ag-Ni alloy of the third layer 300 may be made of 5 ~ 20wt% Ni and 80 ~ 95wt% Ag.

[Manufacturing Method of Multi-layer Contact Material]

2 and 3A to 3I are views for explaining an example of the manufacturing process of the multilayer contact material 1 according to the present invention.

First, referring to FIG. 3A, after the first layer metal 100a including Ag 4.0 to 15.5 wt%, P 3.0 to 8.0 wt%, and Cu 76.5 to 93.0 wt% is formed, for example, to a buffing brush # 600 size. A buffed surface 100b is formed on one surface of the first layer metal 100a by wiping off the surface foreign matter.

Next, referring to FIGS. 3B and 3C, the second layer metal 200a made of 100 wt% Ag is superimposed on the buffing surface 100 b of the first layer metal 100 a and hot-rolled to bond the clad. According to a preferred embodiment, the hot rolling for cladding is suitably carried out at 500 ° C. to 600 ° C. for 5 to 15 minutes.

The first layer metal 100a and the second layer metal 200a clad bonded by a warm rolling method using a rolling roller may be partially compressed in thickness at the same time that the surface is fused. As for the thickness of the 1st layer metal 100a, 800 micrometers-1000 micrometers are the most suitable. When the compressed first layer metal 100a is formed to have a thickness of less than 800 μm, the bonding ability between the multilayer contact material and the base metal may be sharply lowered. In this manner, the first layer 100 to which the second layer metal 200a is bonded is formed.

Next, referring to FIG. 3D, after preparing the third layer metal 300a made of any one alloy of Ag-CdO alloy, Ag-SnO-InO alloy, and Ag-Ni alloy, for example, buffing brush # 600 size The buffing surface 300b is formed on one surface of the third layer metal 300a by a method such as wiping off the foreign matter on the surface of the furnace.

Next, referring to FIGS. 3E and 3F, a second b layer metal 200 b made of 100 wt% Ag is superposed and hot rolled on the upper portion of the buffing surface 300 b of the third layer metal 300 a to be clad bonded thereto. According to a preferred embodiment, the hot rolling for cladding is suitably carried out at 700 ° C. to 800 ° C. for 5 to 15 minutes in a holding state.

By a method such as warm rolling using a rolling roller, the clad bonded third layer metal 300a and the second layer 2b metal 200b may be partially compressed in thickness while the surface is fused. According to a preferred embodiment, the thickness of the compressed third layer metal 100a is most appropriate between 5.8 mm and 6.0 mm. In this manner, the third layer 300 to which the second b layer metal 200a is coupled is formed.

Next, referring to FIGS. 3G and 3H, the cladding of the first layer 100 and the second layer metal 200a formed by the process of FIGS. 3A to 3C, and the first formed by the process of FIGS. 3D to 3F. The cladding of the third layer 300 and the second b-layer metal 200b is clad bonded by, for example, a hot rolling method. At this time, the cladding is made by overlapping the second layer metal 200a and the second layer metal 200b so as to be in contact with each other and then hot rolling. According to a preferred embodiment, hot rolling for cladding is most appropriately maintained and carried out at 500 ° C.-600 ° C. for 5-15 minutes.

As such, when the second a-layer metal 200a and the second a-metal 200b are in contact with each other and hot rolled, as shown in FIG. 2, the boundary between the second a-layer metal 200a and the second a-metal 200b is substantially It disappears and forms the second layer 200 which is one metal layer.

It is preferable that the contact material including the first layer 100, the second layer 200, and the third layer 300 formed in this manner has a thickness of 1.2 mm to 1.4 mm.

[Of the multilayer contact material 1 Application example ]

4 is a diagram schematically showing an application example of the multilayer contact material 1 according to the present invention.

The multilayer contact material 1 can be wound on a roll R and automatically supplied for welding. That is, the multilayer contact material 1 is continuously supplied by the roll R and can be cut and used by the cutter C by the required length.

On the other hand, the multilayer contact material 1 cut to an appropriate size can be welded to the base metal 2 by, for example, a spot welder W or the like. Thus, by forming the multi-layered contact material 1 composed of the first layer 100, the second layer 200 and the third layer 300, it is possible to continuously supply by the roll (R) and workability It can be greatly improved and is easy to use by cutting to the required length.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: multilayer contact material 100, 100a: first layer metal
100b: buffed surface 200, 200a, 200b: second layer metal
300, 300a: third layer metal 300b: buffing surface

Claims (12)

A first layer consisting of Ag 4.0 ~ 15.5wt%, P 3.0 ~ 8.0wt% and Cu 76.5 ~ 93.0wt%;
A second layer made of 100 wt% Ag; And
It is composed of a third layer made of an alloy of any one of Ag-CdO alloy, Ag-SnO-InO alloy and Ag-Ni alloy,
The Ag-CdO alloy is made of Cd 5 ~ 20wt%, Sn 0.5 ~ 3wt%, Ni 0.05 ~ 0.5wt% and Ag 76.5 ~ 94.45wt%,
The Ag-SnO-InO alloy is composed of Sn 2 ~ 15wt%, In 1 ~ 10wt%, Ni 0.05 ~ 0.5wt%, Te 0.05 ~ 0.5wt% and Ag 74.5 ~ 99.6wt%,
The Ag-Ni alloy is a multilayer contact material, characterized in that consisting of Ni 5 ~ 20wt% and Ag 80 ~ 95wt% . A first layer consisting of Ag 4.0 ~ 15.5wt%, P 3.0 ~ 8.0wt% and Cu 76.5 ~ 93.0wt%;
A second layer consisting of 100 wt% Cu; And
It is composed of a third layer made of an alloy of any one of Ag-CdO alloy, Ag-SnO-InO alloy and Ag-Ni alloy,
The Ag-CdO alloy is made of Cd 5 ~ 20wt%, Sn 0.5 ~ 3wt%, Ni 0.05 ~ 0.5wt% and Ag 76.5 ~ 94.45wt%,
The Ag-SnO-InO alloy is composed of Sn 2 ~ 15wt%, In 1 ~ 10wt%, Ni 0.05 ~ 0.5wt%, Te 0.05 ~ 0.5wt% and Ag 74.5 ~ 99.6wt%,
The Ag-Ni alloy is a multilayer contact material, characterized in that consisting of Ni 5 ~ 20wt% and Ag 80 ~ 95wt% . A first layer consisting of Ag 4.0 ~ 15.5wt%, P 3.0 ~ 8.0wt% and Cu 76.5 ~ 93.0wt%;
A second layer consisting of 5 to 95 wt% Ag and 5 to 95 wt% Cu; And
It is composed of a third layer made of an alloy of any one of Ag-CdO alloy, Ag-SnO-InO alloy and Ag-Ni alloy,
The Ag-CdO alloy is made of Cd 5 ~ 20wt%, Sn 0.5 ~ 3wt%, Ni 0.05 ~ 0.5wt% and Ag 76.5 ~ 94.45wt%,
The Ag-SnO-InO alloy is composed of Sn 2 ~ 15wt%, In 1 ~ 10wt%, Ni 0.05 ~ 0.5wt%, Te 0.05 ~ 0.5wt% and Ag 74.5 ~ 99.6wt%,
The Ag-Ni alloy is a multilayer contact material, characterized in that consisting of Ni 5 ~ 20wt% and Ag 80 ~ 95wt% .
delete delete delete (a-1) buffing the surface on the first layer made of Ag 4.0-15.5 wt%, P 3.0-8.0 wt%, and Cu 76.5-93.0 wt%;
(a-2) superposing and rolling a second aa layer made of 100 wt% Ag on the surface of the buffed first layer to form a clad bond;
(b-1) buffing the surface on the third layer made of an alloy of any one of an Ag—CdO alloy, an Ag—SnO—InO alloy, and an Ag—Ni alloy;
(b-2) superposing a second layer of 100 wt% Ag on the surface of the buffed third layer and rolling the second layer to clad; And
(c-1) the cladding of the first layer and the second layer formed by the steps (a-1) to (a-1) and the steps (b-1) to (b-2) Stacking the clad of the third layer and the second b layer formed by the second a layer and the second b layer so as to be in contact with each other, and rolling the clad bonding. (a-1) buffing the surface over the first layer consisting of Ag 4.0-15.5 wt%, P 3.0-8.0 wt%, and Cu 76.5-93.0 wt%;
(a-2) superposing and rolling a second aa layer of 100 wt% Cu on the surface of the buffed first layer to clad bond;
(b-1) buffing the surface on the third layer made of an alloy of any one of an Ag—CdO alloy, an Ag—SnO—InO alloy, and an Ag—Ni alloy;
(b-2) superposing a second layer of 100 wt% Ag on the surface of the buffed third layer and rolling the second layer to clad;
(c-1) the cladding of the first layer and the second layer formed by the steps (a-1) to (a-2) and the steps (b-1) to (b-2) Stacking the clad of the third layer and the second b layer formed by the second a layer and the second b layer so as to be in contact with each other, and rolling the clad bonding. (a-1) buffing the surface over the first layer consisting of Ag 4.0-15.5 wt%, P 3.0-8.0 wt%, and Cu 76.5-93.0 wt%;
(a-2) superposing and rolling a second layer of 2a layer consisting of 5 to 95 wt% of Ag and 5 to 95 wt% of Cu on the surface of the buffed first layer and clad bonding;
(b-1) buffing the surface on the third layer made of an alloy of any one of an Ag—CdO alloy, an Ag—SnO—InO alloy, and an Ag—Ni alloy;
(b-2) superposing a second layer of 100 wt% Ag on the surface of the buffed third layer and rolling the second layer to clad;
(c-1) the cladding of the first layer and the second layer formed by the steps (a-1) to (a-2) and the steps (b-1) to (b-2) Stacking the clads of the third layer and the second b layer formed by the second a layer and the second b layer so as to be in contact with each other, and rolling the clad bonding. 10. The method according to any one of claims 7 to 9,
The clad bonding of the step (a-2) is a method of manufacturing a multi-layer contact material, characterized in that by holding for 5 to 15 minutes under the conditions of 500 ℃ to 600 ℃ hot rolling. The method according to any one of claims 7 to 9.
The clad bonding of the step (b-2) is a method of manufacturing a multilayer contact material, characterized in that the holding by hot rolling for 5 to 15 minutes under the conditions of 700 ℃ ~ 800 ℃. The method according to any one of claims 7 to 9.
The clad bonding of the step (c-1) is a method for producing a multi-layer contact material, characterized in that by holding for 5 to 15 minutes under the conditions of 500 ℃ to 600 ℃ hot rolling.

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