Production device of layered silver-based metal oxide contact material

Abstract

The utility model discloses a production device of a layered silver-based metal oxide contact material, which comprises a discharging mechanism, an atmosphere protection resistance furnace, a rolling mill, an atmosphere protection cooling device, a limiting device and a winding machine, and the atmosphere protection resistance furnace is divided into a resistance furnace middle section, a resistance furnace front section and a resistance furnace rear section. The resistance furnace middle section is connected with an external non-reducing and non-combustible gas conveying device, the resistance furnace front section and the resistance furnace rear section are both connected with the external non-reducing and non-combustible gas conveying device, and the atmosphere protection cooling device is divided into a cooling device middle section, a cooling device front section and a cooling device rear section. The cooling device middle section is connected with an external non-reducing combustible gas conveying device, and the cooling device front section and the cooling device rear section are both connected with the external non-reducing combustible gas conveying device. The layered silver-based metal oxide contact material which is firm in composite interface bonding, low in cost and stable and reliable in quality can be prepared.

Description

Technical Field

[0001] The utility model relates to the technical field of electric contact materials, in particular to a production device for layered silver-based metal oxide contact materials. Background Art

[0002] Silver-based metal oxide contact materials have metal oxide particles and additive element particles dispersed in the silver matrix. They have excellent electrical and thermal conductivity, resistance to fusion welding, arc erosion resistance, wear resistance and electrical life, and are widely used in low-voltage electrical appliances such as relays, contactors, and circuit breakers. In the application of silver-based metal oxide contact materials, in order to ensure the welding effect of the contact material, one side of the sheet contact material needs to be coated with a layer of pure silver, or a pure silver layer and a solder layer, and this side is used as a welding layer to weld with the contact piece. However, the cost of this type of contact material is very high, and the precious metal silver resource consumption is large.

[0003] Under the condition of meeting the performance of low-voltage electrical appliances, reducing costs and saving precious metal silver resources have become important development directions of contact materials. For this reason, silver-saving double-layer or multi-layer silver-based metal oxide contact materials have also emerged, and silver-saving materials such as copper, iron, copper-nickel, copper-nickel-iron, and zinc-white copper are usually used as composite materials. Since the easily oxidizable composite materials are easily oxidized during the hot rolling composite process, the bonding strength of the composite interface and the welding effect of the contact material are affected. If a reducing atmosphere is used for protection during the hot rolling composite process, the surface of the silver-based metal oxide contact material is easily reduced to a silver metal alloy material at high temperature, and the silver metal alloy material has a low melting point, high resistivity, poor resistance to fusion welding, and poor electrical wear resistance, which seriously affects the performance of the silver-based metal oxide contact material. Therefore, in order to solve the existing problems and meet the standardized production and automated welding requirements of layered silver-based metal oxide contact materials, a production device for layered silver-based metal oxide contact materials with low cost and stable quality is developed, which has a very broad market application prospect and important practical use value. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a production device for a layered silver-based metal oxide contact material with good gas protection effect during heating and cooling, firm material composite interface bonding, low cost and stable and reliable quality.

[0005] The utility model solves the technical problem by adopting a technical solution that is a production device for layered silver-based metal oxide contact materials, comprising a discharge mechanism, an atmosphere protection resistance furnace, a rolling mill, an atmosphere protection cooling device, a limit device and a coiler, characterized in that: the atmosphere protection resistance furnace is divided into a resistance furnace middle section, a resistance furnace front section and a resistance furnace rear section, the resistance furnace middle section is connected to an external non-reducing non-flammable gas conveying device, the resistance furnace front section and the resistance furnace rear section are both connected to an external non-reducing combustible gas conveying device, the atmosphere protection cooling device is divided into a cooling device middle section, a cooling device front section and a cooling device rear section, the cooling device middle section is connected to an external non-reducing non-flammable gas conveying device, the cooling device front section and the cooling device rear section are both connected to an external non-reducing combustible gas conveying device.

[0006] Preferably, the joints of the front section, the rear section and the middle section of the resistance furnace are internally provided with a V-shaped partition structure with through holes, and the joints of the front section, the rear section and the middle section of the cooling device are internally provided with a V-shaped partition structure with through holes.

[0007] Preferably, the unloading mechanism includes a first unloading machine for conveying the first strip, a second unloading machine for conveying the second strip, a third unloading machine for conveying the third strip, a fourth unloading machine for conveying the fourth strip, and a riveting device for riveting and pulling the strip head.

[0008] Preferably, a channel for matching the composite strip is provided inside the limiting device, width adjustment rods are movably provided on the left and right sides of the channel, and a height adjustment rod is movably provided on the upper side of the channel.

[0009] Preferably, the non-reducing non-combustible gas is nitrogen or argon.

[0010] Preferably, the non-reducing combustible gas is any one of natural gas, methane, acetylene, propane or butane.

[0011] Preferably, the lengths of the front section of the resistance furnace, the rear section of the resistance furnace, the front section of the cooling device and the rear section of the cooling device are all controlled between 10 and 30 cm.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model adopts the technical solution of a segmented atmosphere protection resistance furnace. On the one hand, it can effectively prevent the surface of the silver-based metal oxide strip from being reduced to a silver alloy during the heating process, thereby ensuring the electrical properties of the silver-based metal oxide material. On the other hand, it can also effectively prevent the surface of the easily oxidizable composite material strip from being oxidized during the heating process, thereby ensuring the interface bonding strength of the layered silver-based metal oxide composite strip after hot rolling and compounding, thereby ensuring the performance of the contact material. The technical solution ensures that the surface of the welding layer will not be oxidized, effectively ensuring the welding performance and performance of the contact material.

[0014] 2. The utility model adopts the technical solution of a segmented atmosphere protection cooling device, which can effectively prevent the silver-based metal oxide surface of the layered silver-based metal oxide composite strip from being reduced to a silver alloy and the welding layer surface from being oxidized during the cooling process, thereby ensuring the electrical properties of the silver-based metal oxide material and the welding performance of the welding layer material.

[0015] 3. The segmented atmosphere protection resistance furnace and the segmented atmosphere protection cooling device of the utility model both adopt a technical solution of a V-shaped partition structure in which the middle section is connected to an external non-reducing non-combustible gas conveying device and the front and rear sections are connected to an external non-reducing combustible gas conveying device, and through holes are provided between adjacent internal sections. During use, the middle section of the resistance furnace and the cooling device is ventilated first, and after the atmosphere fills the middle section, the front and rear sections of the resistance furnace and the cooling device are ventilated and ignited, which can effectively isolate the atmosphere between adjacent sections, and the strip can be automatically guided to the through hole through the internal V-shaped slope, so it also has a good guiding effect, which can ensure the smooth transportation and passage of the strip.

[0016] 4. The height and width of the channel in the limiting device of the utility model can be changed by adjusting the width adjustment rod and the height adjustment rod, so as to adapt to composite strips of different thicknesses and widths, so that the winding machine can rewind the material more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of a V-shaped partition structure;

[0019] Figure 3 Schematic diagram of the internal structure of the limit device.

[0020] In the figure, 11-feeding mechanism, 111-first feeder, 112-second feeder, 113-third feeder, 114-fourth feeder, 115-riveting device, 12-atmosphere protection resistance furnace, 121-middle section of resistance furnace, 122-front section of resistance furnace, 123-rear section of resistance furnace, 13-rolling mill, 14-atmosphere protection cooling device, 141-middle section of cooling device, 142-front section of cooling device, 143-rear section of cooling device, 15-limiting device, 16-winding machine, 21-V-type separation structure, 22-through hole, 31-width adjustment rod, 32-height adjustment rod, 33-channel. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the technical solution of the utility model, the specific implementation of the utility model will be described below with reference to the accompanying drawings, but the utility model is not limited in any form. Obviously, the following is only an exemplary description of the utility model in combination with the accompanying drawings. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work. In addition, the orientation only represents the relative position relationship between the components, not the absolute position relationship.

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] As shown in the attached figure of the instruction manual Figure 1-Figure 3 As shown, a production device for layered silver-based metal oxide contact materials includes a discharge mechanism 11, an atmosphere protection resistance furnace 12, a rolling mill 13, an atmosphere protection cooling device 14, a limit device 15, and a winding machine 16. The discharge mechanism 11 includes a first discharge machine 111, a second discharge machine 112, a third discharge machine 113, and a fourth discharge machine 114. The first discharge machine 111 is used to convey a first strip, the second discharge machine 112 is used to convey a second strip, the third discharge machine 113 is used to convey a third strip, and the fourth discharge machine 114 is used to convey a fourth strip. The atmosphere protection resistance furnace 12 is divided into a resistance furnace middle section 121, an electric The resistance furnace front section 122 and the resistance furnace rear section 123 have three sections in total, wherein the resistance furnace middle section 121 is connected to an external non-reducing non-combustible gas conveying device, the resistance furnace front section 122 and the resistance furnace rear section 123 are connected to an external non-reducing combustible gas conveying device, and the atmosphere protection cooling device 14 is divided into a cooling device middle section 141, a cooling device front section 142 and a cooling device rear section 143, a total of three sections, wherein the cooling device middle section 141 is connected to an external non-reducing non-combustible gas conveying device, the cooling device front section 142 and the cooling device rear section 143 are connected to an external non-reducing combustible gas conveying device.

[0024] In this embodiment, a V-shaped partition structure 21 with a through hole 22 is provided inside the joints of the front section 122, the rear section 123 and the middle section 121 of the resistance furnace, and a V-shaped partition structure 21 with a through hole 22 is also provided inside the joints of the front section 142, the rear section 143 and the middle section 141 of the cooling device, and the interior of the V-shaped partition structure 21 is a V-shaped slope.

[0025] In this embodiment, a riveting device 115 for riveting and pulling the head of the strip is further provided inside the unwinding mechanism 11 .

[0026] In this embodiment, a channel 33 for matching the composite strip is provided inside the limiting device 15 , width adjustment rods 31 are movably provided on the left and right sides of the channel 33 , and a height adjustment rod 32 is movably provided on the upper side of the channel 33 .

[0027] In this embodiment, the non-reducing and non-flammable gas is nitrogen or argon.

[0028] In this embodiment, the non-reducing combustible gas is any one of natural gas, methane, acetylene, propane or butane.

[0029] In this embodiment, the lengths of the resistance furnace front section 122, the resistance furnace rear section 123, the cooling device front section 142 and the cooling device rear section 143 are all controlled to be between 10 and 30 cm.

[0030] The following is a detailed embodiment, Embodiment 1:

[0031] The layered silver-based metal oxide contact material is a silver-based metal oxide / silver / copper contact material, and is specifically implemented as follows:

[0032] In this embodiment, the first strip is a silver-based metal oxide strip, the second strip is a silver strip, and the third strip is a copper strip. The silver-based metal oxide strip, the silver strip and the copper strip are placed on the first unloading machine 111, the second unloading machine 112 and the third unloading machine 113 respectively. The silver-based metal oxide strip, the silver strip and the copper strip are riveted at the head by the riveting device 115 and then pulled into the atmosphere protection resistance furnace 12 for heating, and then sent to the rolling mill 13 for hot rolling and compounding to obtain the silver-based metal oxide / silver / copper composite strip. The high-temperature silver-based metal oxide / silver / copper composite strip after hot rolling and compounding is pulled into the atmosphere protection cooling device 14 for cooling, and then passed through the limit device 15 and the coiler 16 for coiling.

[0033] Among them, the middle section 121 of the resistance furnace is connected to an external non-reducing non-combustible gas nitrogen conveying device, the front section 122 of the resistance furnace and the rear section 123 of the resistance furnace are connected to an external non-reducing combustible gas natural gas conveying device, the middle section 141 of the cooling device is connected to an external non-reducing non-combustible gas nitrogen conveying device, the front section 142 of the cooling device and the rear section 143 of the cooling device are connected to an external non-reducing combustible gas natural gas conveying device, and the lengths of the front section 122 of the resistance furnace, the rear section 123 of the resistance furnace, the front section 142 of the cooling device and the rear section 143 of the cooling device are all 10 cm.

[0034] Example 2

[0035] The layered silver-based metal oxide contact material is a silver-based metal oxide / silver / copper-nickel contact material, and is specifically implemented as follows:

[0036] In this embodiment, the first strip is a silver-based metal oxide strip, the second strip is a silver strip, and the third strip is a copper-nickel strip. The silver-based metal oxide strip, the silver strip and the copper-nickel strip are placed on the first unloading machine 111, the second unloading machine 112 and the third unloading machine 113 respectively. The silver-based metal oxide strip, the silver strip and the copper-nickel strip are riveted at the head of the strip riveting device 115 and then pulled into the atmosphere protection resistance furnace 12 for heating, and then sent to the rolling mill 13 for hot rolling composite to obtain the silver-based metal oxide / silver / copper-nickel composite strip. The high-temperature silver-based metal oxide / silver / copper-nickel composite strip after hot rolling composite is pulled into the atmosphere protection cooling device 14 for cooling The furnace is cooled at room temperature and then wound through a limiting device 15 and a winder 16, wherein the middle section 121 of the resistance furnace is connected to an external non-reducing non-combustible gas argon conveying device, the front section 122 of the resistance furnace and the rear section 123 of the resistance furnace are connected to an external non-reducing combustible gas methane conveying device, the middle section 141 of the cooling device is connected to an external non-reducing non-combustible gas argon conveying device, the front section 142 of the cooling device and the rear section 143 of the cooling device are connected to an external non-reducing combustible gas methane conveying device, and the lengths of the front section 122 of the resistance furnace, the rear section 123 of the resistance furnace, the front section 142 of the cooling device and the rear section 143 of the cooling device are all 20 cm.

[0037] Example 3

[0038] The layered silver-based metal oxide contact material is a silver-based metal oxide / silver / copper / zinc-nickel copper contact material, and is specifically implemented as follows:

[0039] In this embodiment, the first strip is a silver-based metal oxide strip, the second strip is a silver strip, the third strip is a copper-nickel strip, and the fourth strip is a zinc-white copper strip. The silver-based metal oxide strip, the silver strip, the copper strip and the zinc-white copper strip are placed on the first unloading machine 111, the second unloading machine 112, the third unloading machine 113 and the fourth unloading machine 114 respectively. The silver-based metal oxide strip, the silver strip, the copper strip and the zinc-white copper strip are riveted at the head of the riveting device 115 and then pulled into the atmosphere protection resistance furnace 12 for heating, and then sent to the rolling mill 13 for hot rolling compounding to obtain the silver-based metal oxide / silver / copper / zinc-white copper composite strip. The high-temperature silver-based metal oxide / silver / copper / zinc-white copper composite strip after hot rolling compounding is pulled into the atmosphere protection cooling The furnace is cooled in the device 14 and then wound through the limiting device 15 and the winder 16, wherein the middle section 121 of the resistance furnace is connected to an external non-reducing non-combustible gas argon conveying device, the front section 122 of the resistance furnace and the rear section 123 of the resistance furnace are connected to an external non-reducing combustible gas butane conveying device, the middle section 141 of the cooling device is connected to an external non-reducing non-combustible gas argon conveying device, the front section 142 of the cooling device and the rear section 143 of the cooling device are connected to an external non-reducing combustible gas butane conveying device, and the lengths of the middle section 121 of the resistance furnace, the front section 122 of the resistance furnace, the rear section 123 of the resistance furnace, the middle section 141 of the cooling device, the front section 142 of the cooling device and the rear section 143 of the cooling device are all 30 cm.

[0040] Compared with the prior art, the utility model has the following beneficial effects:

[0041] 1. The utility model adopts the technical solution of a segmented atmosphere protection resistance furnace. On the one hand, it can effectively prevent the surface of the silver-based metal oxide strip from being reduced to a silver alloy during the heating process, thereby ensuring the electrical properties of the silver-based metal oxide material. On the other hand, it can also effectively prevent the surface of the easily oxidizable composite material strip from being oxidized during the heating process, thereby ensuring the interface bonding strength of the layered silver-based metal oxide composite strip after hot rolling and compounding, thereby ensuring the performance of the contact material. This technical solution ensures that the surface of the welding layer will not be oxidized, effectively ensuring the welding performance and performance of the contact material.

[0042] 2. The utility model adopts the technical solution of a segmented atmosphere protection cooling device, which can effectively prevent the silver-based metal oxide surface of the layered silver-based metal oxide composite strip from being reduced to a silver alloy and the welding layer surface from being oxidized during the cooling process, thereby ensuring the electrical properties of the silver-based metal oxide material and the welding performance of the welding layer material.

[0043] 3. The segmented atmosphere protection resistance furnace and the segmented atmosphere protection cooling device of the utility model both adopt a technical solution of a V-shaped partition structure in which the middle section is connected to an external non-reducing non-combustible gas conveying device and the front and rear sections are connected to an external non-reducing combustible gas conveying device, and through holes are provided between adjacent internal sections. During use, the middle section of the resistance furnace and the cooling device is ventilated first, and after the atmosphere fills the middle section, the front and rear sections of the resistance furnace and the cooling device are ventilated and ignited, which can effectively isolate the atmosphere between adjacent sections, and the strip can be automatically guided to the through hole through the internal V-shaped slope, so it also has a good guiding effect, which can ensure the smooth transportation and passage of the strip.

[0044] 4. The height and width of the channel in the limiting device of the utility model can be changed by adjusting the width adjustment rod and the height adjustment rod, so as to adapt to composite strips of different thicknesses and widths, so that the winding machine can rewind the material more accurately.

[0045] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A production device for a layered silver-based metal oxide contact material, comprising a discharge mechanism (11), an atmosphere protection resistance furnace (12), a rolling mill (13), an atmosphere protection cooling device (14), a limit device (15) and a winding machine (16), characterized in that: The atmosphere protection resistance furnace (12) is divided into a resistance furnace middle section (121), a resistance furnace front section (122) and a resistance furnace rear section (123); the resistance furnace middle section (121) is connected to an external non-reducing non-combustible gas conveying device, and the resistance furnace front section (122) and the resistance furnace rear section (123) are both connected to an external non-reducing combustible gas conveying device; the atmosphere protection cooling device (14) is divided into a cooling device middle section (141), a cooling device front section (142) and a cooling device rear section (143); the cooling device middle section (141) is connected to an external non-reducing non-combustible gas conveying device, and the cooling device front section (142) and the cooling device rear section (143) are both connected to an external non-reducing combustible gas conveying device.

2. The production device of a layered silver-based metal oxide contact material according to claim 1, characterized in that: A V-shaped partition structure (21) with a through hole (22) is provided inside the joints of the resistance furnace front section (122), the resistance furnace rear section (123) and the resistance furnace middle section (121); a V-shaped partition structure (21) with a through hole (22) is also provided inside the joints of the cooling device front section (142), the cooling device rear section (143) and the cooling device middle section (141).

3. The production device of a layered silver-based metal oxide contact material according to claim 1, characterized in that: The unloading mechanism (11) comprises a first unloading machine (111) for conveying a first strip, a second unloading machine (112) for conveying a second strip, a third unloading machine (113) for conveying a third strip, a fourth unloading machine (114) for conveying a fourth strip, and a riveting device (115) for riveting and pulling the strip heads.

4. The production device of a layered silver-based metal oxide contact material according to claim 1, characterized in that: The limiting device (15) is provided with a channel (33) for matching the composite strip inside, and width adjustment rods (31) are movably provided on the left and right sides of the channel (33), and a height adjustment rod (32) is also movably provided on the upper side of the channel (33).

5. The production device of a layered silver-based metal oxide contact material according to claim 1, characterized in that: The non-reducing and non-flammable gas is nitrogen or argon.

6. The production device of a layered silver-based metal oxide contact material according to claim 1, characterized in that: The non-reducing combustible gas is selected from any one of natural gas, methane, acetylene, propane or butane.

7. The production device of a layered silver-based metal oxide contact material according to claim 1, characterized in that: The lengths of the resistance furnace front section (122), the resistance furnace rear section (123), the cooling device front section (142) and the cooling device rear section (143) are all controlled to be between 10 and 30 cm.

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