CN114178675B - Production method of conducting rod - Google Patents

Production method of conducting rod Download PDF

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Publication number
CN114178675B
CN114178675B CN202111610409.1A CN202111610409A CN114178675B CN 114178675 B CN114178675 B CN 114178675B CN 202111610409 A CN202111610409 A CN 202111610409A CN 114178675 B CN114178675 B CN 114178675B
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welding
rod
antioxidant
antioxidation
parts
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CN202111610409.1A
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CN114178675A (en
Inventor
沈飞
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Jiangsu Feilong Electric Co ltd
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Jiangsu Feilong Electric Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/24Preliminary treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/22Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
    • B23K20/233Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

The invention relates to the technical field of electric power fitting production, in particular to a production method of a conducting rod, which comprises the following steps: raw material preparation: the conductive rod comprises a rod body in the middle and connecting plates at two ends; the connecting plate is pressed by a coarse copper bar, and the head of the copper bar is upset by a stamping die; and (3) welding: connecting the connecting rod with the two ends of the middle rod body by adopting friction welding, wherein the welding speed of the friction welding is 250-300epm, the friction pressure is 2.0-2.5Mpa, the feeding speed of a workpiece is 0.8-1.5mm/s, the friction butt joint time of the workpieces at the two ends is 15-20s, the welding is stopped after the welding is finished, and the welding is naturally cooled to room temperature; surface coating: the plating layer comprises a pretreatment step; preparing an antioxidant; discharging the electric conduction into an antioxidant for antioxidation treatment, heating to 30-45 ℃, and simultaneously pressurizing for 4-6 minutes to complete the antioxidation step; and cleaning the conducting bars subjected to the antioxidation treatment and boxing. The device has the advantages of high production efficiency of the conducting rod and good oxidation resistance.

Description

Production method of conducting rod
Technical Field
The invention relates to the technical field of electric power fitting production, in particular to a production method of a conducting rod.
Background
At present, the transformer is widely applied to various industries, and because the transformer is commonly used in the power transmission industry, sometimes the transformer needs to be installed in the field, so that the safety performance of the transformer is important, and the safety performance of a conducting rod installed at the top of the transformer and used for connecting a coil outgoing line of the transformer with an external line needs to be further improved.
The conducting rod in the prior art has the problems of poor production efficiency and easy oxidation of the surface of the conducting rod.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a novel production method of a conducting rod, which can solve the technical problems in the background art.
The invention is realized by adopting the following technical scheme: a production method of a conductive rod comprises the following steps:
raw material preparation: the conducting rod comprises a middle rod body and connecting plates at two ends, the two ends of the connecting plates are provided with connecting rods, the middle rod body is an aluminum solid rod body, metal flaw detection is carried out on the middle rod body during forming, meanwhile, the surface of the aluminum rod is detected, and defects such as cracks on the surface of the aluminum rod are welded;
the method comprises the steps of (1) pressing a connecting plate by adopting a blister copper bar, upsetting the head of the copper bar by adopting a stamping die, upsetting the head of the copper bar into a rectangular shape, cutting the copper bar, and punching the rectangular plate;
cleaning the middle rod body and the connecting rod on the connecting plate, cleaning the two ends of the middle rod body and the connecting rod on the connecting plate by using isopropanol solution, and preparing for welding;
and (3) welding: connecting the connecting rod with the two ends of the middle rod body by adopting friction welding, wherein the welding rotating speed of the friction welding is 250-300rpm, the friction pressure is 2.0-2.5Mpa, the feeding speed of a workpiece is 0.8-1.5mm/s, the friction butt joint time of the workpieces at the two ends is 15-20s, the welding is stopped suddenly after the welding is finished, and the welding is naturally cooled to room temperature;
machining the welding surface, namely machining the welding position by adopting a turning mode, and machining the welding surface to be smooth;
surface coating: the plating layer comprises a pretreatment step, wherein the surface of a workpiece is polished, washed by water and pickled, the pickling step adopts pickling solution for cleaning, the conductive bar is soaked into the pickling solution for 1h and the pickling solution is heated, the heating temperature is 31-35 ℃, and the pickled conductive bar is cleaned by clean water and dried;
preparing an antioxidant, wherein the antioxidant comprises the following raw materials in parts by mass: 1 part of sulfosalicylic acid, 1.5 parts of phosphoric acid solution, 2 parts of tetraethoxysilane, 1.5 parts of methyltrimethoxysilane, 20 parts of organic solvent and 10 parts of antioxidant, wherein the antioxidant comprises one of mono-tert-butyl-p-cresol, catechol or resorcinol or is prepared by compounding the same proportion;
discharging the electric conduction into an antioxidant for antioxidation treatment, pouring the antioxidant into a container, sealing after discharging the electric conduction, heating to 30-45 ℃, and simultaneously pressurizing for 4-6 minutes to complete the antioxidation step;
and cleaning the conducting bars subjected to the antioxidation treatment and boxing.
The preferred embodiment of the present invention is that the organic solvent comprises any one of formamide, acetonitrile, propanol and ethylene glycol.
The preferred embodiment of the invention is that the antioxidation process is carried out twice, namely primary antioxidation and secondary antioxidation respectively;
placing an antioxidant in a container, placing a conductive rod in the antioxidant, heating to 30-35 ℃, and preserving heat for 2min;
placing the conductive rod in antioxidant, heating to 40-45deg.C, and maintaining for 5min.
The preferred embodiment of the invention is that the antioxidant further comprises a stabilizer, wherein the stabilizer is aluminum formate, and the aluminum formate is 3-3.5 parts by mass.
Compared with the prior art, the invention improves the production process, the conductive rod is divided into two halves, the center is a core rod made of aluminum, the two ends are connected ends made of brass, the two ends are connected by friction welding, and meanwhile, antioxidant liquid is prepared, so that a passivation film can be formed on the surface of the conductive rod to prevent corrosion of the surface of the conductive rod.
Detailed Description
The present invention will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
The invention relates to a conductive rod molding method, which comprises two steps, namely a conductive rod rough process and a conductive rod refining process, wherein the conductive rod rough process is to connect an aluminum rod with a copper connecting plate, and the conductive rod refining process is to attach an antioxidation layer on the conductive rod to protect the surface of the conductive rod.
The method comprises the following specific steps:
raw material preparation: the conducting rod comprises a middle rod body and connecting plates at two ends, the two ends of the connecting plates are provided with connecting rods, the middle rod body is an aluminum solid rod body, metal flaw detection is carried out on the middle rod body during forming, meanwhile, the surface of the aluminum rod is detected, and defects such as cracks on the surface of the aluminum rod are welded; here the slit is welded and then a grinding and polishing step is required,
the method comprises the steps of (1) pressing a connecting plate by adopting a blister copper bar, upsetting the head of the copper bar by adopting a stamping die, upsetting the head of the copper bar into a rectangular shape, cutting the copper bar, and punching the rectangular plate;
cleaning the middle rod body and the connecting rod on the connecting plate, cleaning the two ends of the middle rod body and the connecting rod on the connecting plate by using isopropanol solution, and preparing for welding;
and (3) welding: connecting the connecting rod with the two ends of the middle rod body by adopting friction welding, wherein the welding rotating speed of the friction welding is 250-300rpm, the friction pressure is 2.0-2.5Mpa, the feeding speed of a workpiece is 0.8-1.5mm/s, the friction butt joint time of the workpieces at the two ends is 15-20s, the welding is stopped suddenly after the welding is finished, and the welding is naturally cooled to room temperature;
machining the welding surface, namely machining the welding position by adopting a turning mode, and machining the welding surface to be smooth;
in the rough step of the conducting rod, a friction welding mode is adopted to connect the central aluminum core body of the conducting rod with the connecting plates at the two ends, so that the damage to the central core body in the step of upsetting the connecting plates is avoided, the loss of raw materials is reduced, and the elongation efficiency is high.
Surface coating: the plating layer comprises a pretreatment step, wherein the surface of a workpiece is polished, washed by water and pickled, the pickling step adopts pickling solution for cleaning, the conductive bar is soaked into the pickling solution for 1h and the pickling solution is heated, the heating temperature is 31-35 ℃, and the pickled conductive bar is cleaned by clean water and dried;
preparing an antioxidant, wherein the antioxidant comprises the following raw materials in parts by mass: 1 part of sulfosalicylic acid, 1.5 parts of phosphoric acid solution, 2 parts of tetraethoxysilane, 1.5 parts of methyltrimethoxysilane, 20 parts of organic solvent and 10 parts of antioxidant, wherein the antioxidant comprises one of mono-tert-butyl-p-cresol, catechol or resorcinol or is prepared by compounding the same proportion;
discharging the electric conduction into an antioxidant for antioxidation treatment, pouring the antioxidant into a container, sealing after discharging the electric conduction, heating to 30-45 ℃, and simultaneously pressurizing for 4-6 minutes to complete the antioxidation step;
and cleaning the conducting bars subjected to the antioxidation treatment and boxing.
Further, the organic solvent comprises any one of formamide, acetonitrile, propanol and ethylene glycol.
Further, the antioxidation process is carried out twice, namely primary antioxidation and secondary antioxidation respectively;
placing an antioxidant in a container, placing a conductive rod in the antioxidant, heating to 30-35 ℃, and preserving heat for 2min;
placing the conductive rod in antioxidant, heating to 40-45deg.C, and maintaining for 5min.
Further, the antioxidant also comprises a stabilizer, wherein the stabilizer is aluminum formate, and the aluminum formate is 3-3.5 parts by mass.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.

Claims (4)

1. The production method of the conducting rod is characterized by comprising the following steps of: the method comprises the following steps:
raw material preparation: the conducting rod comprises a middle rod body and connecting plates at two ends, connecting rods are arranged at two ends of the connecting plates, the middle rod body is an aluminum solid rod body, metal flaw detection is carried out on the middle rod body during forming, meanwhile, the surface of the aluminum rod is detected, and welding treatment is carried out on the surface crack defect of the aluminum rod;
the method comprises the steps of (1) pressing a connecting plate by adopting a blister copper bar, upsetting the head of the copper bar by adopting a stamping die, upsetting the head of the copper bar into a rectangular shape, cutting the copper bar, and punching the rectangular plate;
cleaning the middle rod body and the connecting rod on the connecting plate, cleaning the two ends of the middle rod body and the connecting rod on the connecting plate by using isopropanol solution, and preparing for welding;
and (3) welding: connecting the connecting rod with the two ends of the middle rod body by adopting friction welding, wherein the welding speed of the friction welding is 250-300Rpm, the friction pressure is 2.0-2.5Mpa, the feeding speed of a workpiece is 0.8-1.5mm/s, the friction butt joint time of the workpieces at the two ends is 15-20s, the welding is stopped after the welding is finished, and the welding is naturally cooled to room temperature;
machining the welding surface, namely machining the welding position by adopting a turning mode, and machining the welding surface to be smooth;
surface coating: the plating layer comprises a pretreatment step, wherein the surface of a workpiece is polished, washed by water and pickled, the pickling step adopts pickling solution for cleaning, the conductive bar is soaked into the pickling solution for 1h and the pickling solution is heated, the heating temperature is 31-35 ℃, and the pickled conductive bar is cleaned by clean water and dried;
preparing an antioxidant, wherein the antioxidant comprises the following raw materials in parts by mass: 1 part of sulfosalicylic acid, 1.5 parts of phosphoric acid solution, 2 parts of tetraethoxysilane, 1.5 parts of methyltrimethoxysilane, 20 parts of organic solvent and 10 parts of antioxidant, wherein the antioxidant comprises one of mono-tert-butyl-p-cresol, catechol or resorcinol or is prepared by compounding the same proportion;
discharging the electric conduction into an antioxidant for antioxidation treatment, pouring the antioxidant into a container, sealing after discharging the electric conduction, heating to 30-45 ℃, and simultaneously pressurizing for 4-6 minutes to complete the antioxidation step;
and cleaning the conducting bars subjected to the antioxidation treatment and boxing.
2. The method for producing a conductive rod according to claim 1, wherein: the organic solvent comprises any one of formamide, acetonitrile, propanol and ethylene glycol.
3. The method for producing a conductive rod according to claim 1, wherein: the antioxidation process is carried out twice, namely primary antioxidation and secondary antioxidation respectively;
placing an antioxidant in a container, placing a conductive rod in the antioxidant, heating to 30-35 ℃, and preserving heat for 2min;
placing the conductive rod in antioxidant, heating to 40-45deg.C, and maintaining for 5min.
4. The method for producing a conductive rod according to claim 1, wherein: the antioxidant also comprises a stabilizer, wherein the stabilizer is aluminum formate, and the aluminum formate is 3-3.5 parts by mass.
CN202111610409.1A 2021-12-27 2021-12-27 Production method of conducting rod Active CN114178675B (en)

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CN114178675B true CN114178675B (en) 2023-06-13

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Publication number Priority date Publication date Assignee Title
CN115351412A (en) * 2022-08-17 2022-11-18 西安建筑科技大学 Method for welding bar material and connecting rod for rotating electrode through axial friction

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1144731A (en) * 1996-08-02 1997-03-12 姚春 Copper-aluminium joint friction welding technique
CN100433221C (en) * 2006-03-03 2008-11-12 段沛林 Prepn. method copper-aluminum composite conductive pole
JP5689665B2 (en) * 2010-12-10 2015-03-25 富士フイルム株式会社 Method for preventing oxidation of metal film surface and antioxidant liquid
CN104842122A (en) * 2014-02-13 2015-08-19 苏州银涛精密锻造有限公司 Conducting rod forge forming process
CN106825903B (en) * 2015-12-07 2020-01-07 上海航天设备制造总厂 Manufacturing method of aluminum alloy conducting rod
CN110829141A (en) * 2018-08-09 2020-02-21 海安能达电气有限公司 Process method for manufacturing transformer copper bar
CN113199205A (en) * 2020-01-30 2021-08-03 阿发屋株式会社 Method for manufacturing thin plate

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