CN106825903A - A kind of aluminium alloy conducting rod manufacture method - Google Patents
A kind of aluminium alloy conducting rod manufacture method Download PDFInfo
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- CN106825903A CN106825903A CN201510885934.2A CN201510885934A CN106825903A CN 106825903 A CN106825903 A CN 106825903A CN 201510885934 A CN201510885934 A CN 201510885934A CN 106825903 A CN106825903 A CN 106825903A
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- welding
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- conducting rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-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
- B23K20/122—Non-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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-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
- B23K20/122—Non-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
- B23K20/1245—Non-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 characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/38—Conductors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The present invention proposes a kind of manufacture method of aluminium alloy conducting rod, first it is the manufacture of conductor, extrusion forming, reaming-forming and mechanical turnery processing including guide rod, next to that the manufacture of top guide, the mainly machining of top guide, finally again using top guide is connected shaping with guide rod by agitating friction welding technology " without keyhole ".The present invention solves the problems, such as big thickness minor diameter girth welding quality, has compared with background technology obvious advanced.Guide rod manufacture method, guide rod and top guide joint trim designs and " without keyhole " agitating friction welding technology are provided using the present invention, the qualification rate of aluminium alloy conducting rod manufacture is substantially increased, production efficiency is improve, production cost is reduced.Experiment proves that meet design requirement using conducting rod manufacture dimensional accuracy after the present invention, seam organization is continuously fine and close, pore-free, be mingled with, the defect such as keyhole, production process realizes Automated condtrol；Solder yield is by 40% original raising to 95%.
Description
Technical field
Patent of the present invention belongs to aluminium alloy conducting rod manufacturing technology, specially conducting rod top guide manufacturing technology and guide rod manufacturing technology, is related to the agitating friction welding technology of top guide and guide rod circumferential weld.
Background technology
Aluminium alloy conducting rod is widely used in the equipment such as transformer station, automatically controlled unit, and its use environment is harsh, it is desirable to which resistance to high life, height use secure safety.Aluminium alloy conducting rod is typically made up of top guide and guide rod, top guide is machined into using aluminum alloy materials, guide rod uses hollow aluminium-alloy pipe section bar, existing method typically uses argon arc welding, in this way not only weld defect especially the weld defect such as stomata, crackle is difficult to avoid that, and its production process is more, labor strength big, power consumption is big, cause that its production qualification rate is low, service life is poor, replacement cost is high.In addition " weldering leakage " is easily produced at the internal combustion of guide rod and top guide using argon arc welding, has a strong impact on the stability and security of power transmission.
The content of the invention
Top guide and guide rod welding quality in " ratio long/thin " larger aluminium alloy conducting rod to solve the problems, such as, now using " without keyhole " agitating friction welding technology, realize minor-diameter and large-depth circumferential weld without thinning welding.
To realize above-mentioned technical proposal, a kind of manufacture method of minor diameter aluminium alloy conducting rod of the invention, the conducting rod manufacture method, it is characterised in that conducting rod is made up of three parts：Two top guides and a guide rod, guide rod form aluminium alloy cylinder section by aluminium alloy extruded shaping；Top guide is molded by aluminum alloy machinery turnery processing.Top guide carries out welding manufacture with guide rod using agitating friction welding technology.Aluminium alloy conducting rod manufacture method, using following steps：
Step 1：The manufacture of conducting rod top guide；Top guide carries out mechanical turning according to the dimensions requirement that drawing specifies using 6 line aluminium alloy materials, and top guide surface roughness should meet the requirement of subsequent treatment；
Step 2：The manufacture of conducting rod guide rod；
Step 2.1：The extrusion forming of conducting rod guide rod：Conducting rod is minor diameter hollow structure, and the blank of guide rod is manufactured using profile extrusion method, and the length of guide rod can carry out cutting section according to the actually used length of conducting rod；
Step 2.2：The joint manufacture of conducting rod guide rod interface：Using horizontal staving press, the two ends to guide rod carry out heat/machine joint reaming, and the depth of reaming and the outer diameter D2 of reaming are relevant with depth of weld H.
Step 2.3：The manufacture of conducting rod guide rod：After the completion of reaming-forming, mechanical turning interface is carried out according to size.
Step 3：The assembling of conducting rod top guide and guide rod；Top guide is " bottom self-locked " joint with the joint geometry of guide rod；Top guide should belong to elastic conjunction with the assembling of guide rod, and the magnitude of interference is generally 0.01mm ~ 0.02mm；The fit-up gap of " bottom self-locked " joint is not more than 0.05mm.There is welding boss at top guide and rod coupling, boss height is H1.
Step 4：The welding of conducting rod top guide and conductor；Top guide is with conductor using " without keyhole ", agitating friction welding technology is attached shaping.
Step 5：After the completion of welding, " keyhole " plate is received in removal, and the boss at mechanical turning banjo fixing butt jointing need to be seamlessly transitted during turning with guide rod top guide.
Step 6：Conducting rod entirety polishing.
Further, a kind of aluminium alloy conducting rod manufacture method, it is characterised in that：Step 1 top guide should be matched with guide rod intubating length with the depth of guide rod reaming, the general 0.02mm ~ 0.05mm smaller than counterbore depth of its length；The outline processing roughness of top guide is 0.8.
Further, a kind of aluminium alloy conducting rod manufacture method, it is characterised in that：The interface at step 2.2 conducting rod guide rod two ends carries out reaming using horizontal staving press.Horizontal staving press is 100 tons of horizontal press, and the single electrical bar unilateral reaming retention time is 5min ~ 8min, and reaming temperature is 100 DEG C.
Further, a kind of aluminium alloy conducting rod manufacture method, it is characterised in that the agitating friction soldering equipment in step 4 is one-dimensional planer-type agitating friction soldering equipment, first tack welding during welding, then formal welding.Positioning welding technological parameter：It is 8mm, the stirring-head positioning welding of a length of 2mm of mixing needle to use the shaft shoulder, and main shaft angle is（2~3）°, main shaft rotary speed n=1400rpm, conducting rod rotary speed（That is speed of welding）It is v=1.5rpm, 0.2 ~ 0.3mm of welding intrusion；Formally welding condition is：The shaft shoulder is used formally to be welded for the stirring-head of 15mm, a length of 10.6mm of mixing needle, main shaft rotary speed n=1100rpm, conducting rod rotary speed is 0.8rpm, welding intrusion is 0.2 ~ 0.4mm.
Further, a kind of aluminium alloy conducting rod manufacture method, it is characterized in that, will by the way of " keyhole " plate is received, by welding procedure control during welding, on the position that the upper surface for receiving " keyhole " plate is advanced into conducting rod guide rod tangential direction and can be fitted with guide rod by welding ending segment, enable stirring-head to weld out along the tangential direction on guide rod circumference top, realize being welded " without keyhole ".
Further, a kind of conducting rod manufacture method, it is characterised in that removed after the completion of step 5 welding and receive " keyhole " plate, turning welding boss.The volume under pressure that agitating friction weldering is produced to welding position can be offset by the boss, the turning welding boss, be capable of achieving the smooth equal diameter transition of top guide and guide rod, realize welding of the commissure without Reducing thickness.
The present invention efficiently solves the problems, such as that existing aluminium alloy conducting rod welding quality is low, service life is poor, has obvious technical advance compared with background technology.The welding limited welding for realizing minor-diameter and large-depth circumferential weld of boss technology is increased using " without keyhole " agitating friction welding technology and guide rod reaming, realize high-quality, the conducting rod of the smooth continuous equal diameter transition of welding volume under pressure, substantially increase disposable qualification rate, the efficiency that comes into force is improve, production cost is reduced.Experiment is proved to realize complete penetraction and fusion in welding, seam organization densification using the circumferential weld after the present invention, pore-free, crackle, the defect such as is mingled with；Incision test shows that top guide leaks, collapses with guide rod inside solderless；Production process realizes automation, and a solder yield is by 60% original raising to 95%.
Brief description of the drawings
Fig. 1：Generalized section when conducting rod is assembled, wherein D1 represents top guide（And guide rod）Green diameter（Effective diameter）, D2 represents counter bore diameter, and L represents the effective overall length of conducting rod；
Fig. 2：Conducting rod guide rod generalized section, wherein L2 represents the length of guide rod；
Fig. 3：Conducting rod top guide structural representation, wherein L1 represents the length of top guide, and D3 represents the length inside top guide insertion guide rod；
Fig. 4：Conducting rod top guide and guide rod agitating friction weldering " bottom self-locked " joint schematic diagram, wherein H are the depth of weld, and H1 is welding boss height（H=(D2-D1)/2）
Fig. 5：Conducting rod top guide and guide rod " without keyhole " agitating friction weldering welding process schematic diagram, wherein, 3 represent conducting rod welding direction, 4 represent receipts " keyhole " plate direction of advance, 5 represent stirring tool direction of rotation, after the completion of 6 expression welding, the direction of advance of stirring tool when receiving " keyhole ".
Specific embodiment
The present invention is described with reference to instantiation, as shown in Fig. 1~5, the manufacture of this example is a diameter of 90mm, and length is the conducting rod of 1000mm, and conducting rod shown in Fig. 1 is made up of three parts：Two top guides 1 and a guide rod 2, guide rod 2 form aluminium alloy cylinder section by aluminium alloy extruded shaping；Top guide is molded by aluminum alloy machinery turnery processing.Top guide 1 carries out welding manufacture, Fig. 2 with guide rod 2 using agitating friction welding technology（a）It is schematic diagram before reaming, Fig. 2（b）It is schematic diagram after reaming, specifically using following steps：
Step 1：The manufacture of conducting rod top guide；Top guide carries out mechanical turning according to the dimensions requirement that drawing specifies using 6 line aluminium alloy materials, and top guide surface roughness is 0.8, should meet the requirement of subsequent treatment；
Step 2：The manufacture of conducting rod guide rod；
Step 2.1：The extrusion forming of conducting rod guide rod：Conducting rod is minor diameter hollow structure, and the blank of guide rod is manufactured using profile extrusion method, and the blank Cutting Length of guide rod is 650mm, is finally 636mm according to drawing requirement processing length；Guide rod, the axiality of guide rod is within 0.2mm.
Step 2.2：The joint manufacture of conducting rod guide rod interface：According to " bottom self-locked " joint at drawing processing guide rod interface, with reference to Fig. 3,4；Using horizontal staving press, the two ends to guide rod carry out heat/machine joint reaming.The depth of reaming is 18mm, and diameter D2 in joint is 91mm ~ 92mm after reaming.Step 2.3：The manufacture of conducting rod guide rod：After the completion of reaming-forming, mechanical turning interface is carried out according to size.
Step 3：The assembling of conducting rod top guide and guide rod；Top guide is " bottom self-locked " joint with the joint geometry of guide rod；Top guide should belong to elastic conjunction with the assembling of guide rod, and the magnitude of interference is generally 0.01mm ~ 0.02mm；Top guide should be noted that the surface that can not scratch top guide and guide rod when being assembled with guide rod, and top guide is hammered using rubber hammer, and top guide is not more than 0.05mm with " bottom self-locked " the joint fit-up gap of guide rod.There is welding boss at top guide and rod coupling, boss height is that H1 is 1mm ~ 2mm.
Step 4：The welding of conducting rod top guide and conductor；Top guide is with conductor using " without keyhole ", agitating friction welding technology is attached shaping.Conducting rod direction of rotation, main shaft direction of rotation and direction of advance, receipts " keyhole " plate forward motion etc. are as shown in figure 5, wherein during welding：The a diameter of D1 of top guide, a diameter of D1 of guide rod, a diameter of D2 of circumferential weld " bottom self-locked " banjo fixing butt jointing（D2>D1+（1~2）mm）, the depth of weld is H.Before formal welding, receive " keyhole " plate and keep certain gap, laminating gap to be about 2mm with conducting rod.By welding procedure control during welding, positioning welding is first carried out, positioning welding technological parameter is as follows：It is 8mm, the stirring-head positioning welding of a length of 2mm of mixing needle to use the shaft shoulder, and main shaft angle is（2~3）°, main shaft rotary speed n=1400rpm, conducting rod rotary speed（That is speed of welding）It is v=1.5rpm, 0.2 ~ 0.3mm of welding intrusion.After the completion of positioning welding, then formally welded, welding condition is as follows：Formally welding condition is：The shaft shoulder is used formally to be welded for the stirring-head of 15mm, a length of 10.6mm of mixing needle, main shaft rotary speed n=1100rpm, conducting rod rotary speed is 0.8rpm, welding intrusion is 0.2 ~ 0.4mm.After conducting rod rotates 400 °, by programme-control, conducting rod stops the rotation, on the position that now upper surface for receiving " keyhole " plate is advanced into conducting rod guide rod tangential direction and can be fitted with guide rod, perform welding procedure, enable stirring-head to weld out along the tangential direction on guide rod circumference top, realize the extraction of welding " keyhole ".
Step 5：After the completion of welding, " keyhole " plate is received in removal, and the boss height at mechanical turning banjo fixing butt jointing need to be seamlessly transitted during turning with guide rod top guide.Note controlling the lathe tool amount of feeding during turning, the single step amount of feeding is 0.02mm, and boss avoids obvious lapping defect with guide rod intersection.
Step 6：Conducting rod entirety polishing.Roughness of polished is 0.8.
Claims (6)
1. a kind of aluminium alloy conducting rod manufacture method, the conducting rod is made up of three parts：Two top guides and a guide rod, guide rod form aluminium alloy cylinder section by aluminium alloy extruded shaping；Top guide is molded by aluminum alloy machinery turnery processing, and top guide carries out welding manufacture with guide rod using agitating friction welding technology；Characterized in that, the method is comprised the following steps：
Step 1：The manufacture of conducting rod top guide；Top guide carries out mechanical turning according to the dimensions requirement that drawing specifies using 6 line aluminium alloy materials, and top guide surface roughness should meet the requirement of subsequent treatment；
Step 2：The manufacture of conducting rod guide rod；
Step 2.1：The extrusion forming of conducting rod guide rod：Conducting rod is minor diameter hollow structure, and the blank of guide rod is manufactured using profile extrusion method, and the length of guide rod can carry out cutting section according to the actually used length of conducting rod；
Step 2.2：The joint manufacture of conducting rod guide rod interface：Using horizontal staving press, the two ends to guide rod carry out heat/machine joint reaming, and the depth of reaming and the outer diameter D2 of reaming are relevant with depth of weld H；
Step 2.3：The manufacture of conducting rod guide rod：After the completion of reaming-forming, mechanical turning interface is carried out according to size；
Step 3：The assembling of conducting rod top guide and guide rod；Top guide is " bottom self-locked " joint with the joint geometry of guide rod；Top guide should belong to elastic conjunction with the assembling of guide rod, and the magnitude of interference is 0.01mm ~ 0.02mm；The fit-up gap of " bottom self-locked " joint is less than or equal to 0.02mm；There is welding boss at top guide and rod coupling, boss height is H1；
Step 4：The welding of conducting rod top guide and conductor；Top guide is with conductor using " without keyhole ", agitating friction welding technology is attached shaping；
Step 5：After the completion of welding, " keyhole " plate is received in removal, and the boss at mechanical turning banjo fixing butt jointing need to be seamlessly transitted during turning with guide rod top guide；
Step 6：Conducting rod entirety polishing.
2. a kind of aluminium alloy conducting rod manufacture method as claimed in claim 1, it is characterised in that：Step 1 top guide should be matched with guide rod intubating length with the depth of guide rod reaming, the general 0.02mm ~ 0.05mm smaller than counterbore depth of its length；The outline processing roughness of top guide is 0.8.
3. a kind of aluminium alloy conducting rod manufacture method as claimed in claim 1, it is characterised in that：The interface at the step 2.2 conducting rod guide rod two ends carries out reaming using horizontal staving press, and horizontal staving press is 100 tons of horizontal press, and the single electrical bar unilateral reaming retention time is 5min ~ 8min, and reaming temperature is 100 DEG C.
4. a kind of aluminium alloy conducting rod manufacture method as claimed in claim 1, it is characterised in that：Agitating friction soldering equipment in the step 4 is one-dimensional planer-type agitating friction soldering equipment, first tack welding during welding, then formal welding；Positioning welding technological parameter：It is 8mm, the stirring-head positioning welding of a length of 2mm of mixing needle to use the shaft shoulder, and main shaft angle is 2 ~ 3 °, main shaft rotary speed n=1400rpm, and conducting rod rotary speed is that speed of welding is v=1.5rpm, 0.2 ~ 0.3mm of welding intrusion；Formally welding condition is：The shaft shoulder is used formally to be welded for the stirring-head of 12mm, a length of 10.6mm of mixing needle, main shaft rotary speed n=1100rpm, conducting rod rotary speed is 0.8rpm, welding intrusion is 0.2 ~ 0.4mm.
5. a kind of aluminium alloy conducting rod manufacture method as claimed in claim 1, it is characterised in that：The step 4 will receive the upper surface propulsion of " keyhole " plate with conducting rod guide rod tangential direction and the position that can fit with guide rod in welding ending segment, enable stirring-head to weld out along the tangential direction of guide rod, realization welding " without keyhole ".
6. a kind of aluminium alloy conducting rod manufacture method as claimed in claim 1, it is characterised in that：Removed after the completion of the step 5 welding and receive " keyhole " plate, turning welding boss, the volume under pressure that agitating friction weldering is produced to welding position can be offset by the boss, the turning welding boss is capable of achieving the smooth equal diameter transition of top guide and guide rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510885934.2A CN106825903B (en) | 2015-12-07 | 2015-12-07 | Manufacturing method of aluminum alloy conducting rod |
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| CN201510885934.2A CN106825903B (en) | 2015-12-07 | 2015-12-07 | Manufacturing method of aluminum alloy conducting rod |
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| CN106825903B CN106825903B (en) | 2020-01-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109454330A (en) * | 2018-11-30 | 2019-03-12 | 上海航天精密机械研究所 | Circumferential weld locks bottom connector and its manufacture welding method |
| CN111276921A (en) * | 2020-03-06 | 2020-06-12 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Suspension type self-locking device |
| CN114178675A (en) * | 2021-12-27 | 2022-03-15 | 江苏飞龙电气有限公司 | Production method of conducting rod |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020106415B4 (en) * | 2020-03-10 | 2021-09-30 | Lisa Dräxlmaier GmbH | FRICTION WELDING CONNECTOR AND METHOD FOR MANUFACTURING THEREOF |
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