CN101968976A - Unequal wall thickness hollow wire of rotor winding and processing technology thereof - Google Patents
Unequal wall thickness hollow wire of rotor winding and processing technology thereof Download PDFInfo
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- CN101968976A CN101968976A CN2009100172774A CN200910017277A CN101968976A CN 101968976 A CN101968976 A CN 101968976A CN 2009100172774 A CN2009100172774 A CN 2009100172774A CN 200910017277 A CN200910017277 A CN 200910017277A CN 101968976 A CN101968976 A CN 101968976A
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Abstract
The invention provides an unequal wall thickness hollow wire of a rotor winding and processing technology thereof, and belongs to the technical field of thermal power rotor windings. The unequal wall thickness hollow wire comprises a hollow conductor with a square cross section, wherein square holes are formed in the hollow conductor; two opposite sides of each square hole have the same thickness; and two adjacent sides of each square hole have different thicknesses. The hollow wire is made of 0.1 silver-bearing copper by performing processes in turn, namely vacuum melting, element proportioning, ingot casting, tube formation by extruding, and cold drawing by using a specially-shaped die, to obtain required hollow wire shape and size, wherein copper and silver accounts for more than or equal to 99.5 weight percent; and the silver accounts for more than or equal to 0.06 to 0.12 weight percent. Compared with the prior art, the unequal wall thickness hollow wire is mainly used for the rotor winding of a large-capacity thermal power generator, wherein the conductivity at the temperature of 20 DEG C is not less than 56m/omega.mm<2>; the tensile strength is more than 270; and the Brinell hardness is between 80 and 90. In the hollow wire of the invention, the gaps of the conventional product are eliminated, so that the heat emission efficiency is improved; simultaneously, the cold drawing technology is introduced into a production process to ensure that every item of dimension and form and position tolerance are efficiently controlled, the working rate is improved, the rejection rate is reduced, and the product cost is reduced.
Description
(1) technical field
The present invention relates to a kind of thermal power generation rotor winding, specifically a kind of rotor winding does not wait wall thickness tubular wire and processing technology thereof.
(2) background technology
Along with science and technology development, the performance of generator and the requirement of power are improved gradually.The rotating speed of generator is more and more higher, power is increasing, and is more and more higher to the requirement of generator lend wire.Generator lend wire not only will make the skin effect be reduced to minimum, also better radiating effect will be arranged simultaneously, is subjected to the restriction of prior art, the present hollow conductor that uses, because shape is special, dimensional requirement is strict, the form and position tolerance precision height of inside and outside wall is so difficulty of processing is big.But because the hollow conductor cross section is square, wall thickness requires uneven, the Geometrical Tolerance Principle strictness of inside and outside wall, and the processed finished products rate is low.
Prior art is to add man-hour hollow conductor to be cut away half, process respectively to guarantee size, the form and position tolerance of inside and outside wall, flatness to two-part contact-making surface requires height like this, and composition surface flatness height just can avoid in use causing because leak out the decline of radiating efficiency.This processing mode has not only increased workload, has increased difficulty of processing simultaneously, and production efficiency is reduced, and percent defective raises, and has increased production cost.
(3) summary of the invention
Technical assignment of the present invention is at the deficiencies in the prior art, provide a kind of manufacturing process simple, conduct electricity very well, rotor winding that production cost is relatively low do not wait wall thickness tubular wire and processing technology thereof.
The technical solution adopted for the present invention to solve the technical problems is:
The rotor winding does not wait the wall thickness tubular wire, comprises that the cross section is square hollow conductor, has square opening in the hollow conductor, and two relative edges' of square opening thickness is identical, the thickness difference of two adjacent edges.
Above-mentioned rotor winding does not wait the wall thickness tubular wire, and the quantity of its square opening is 1-4.
Above-mentioned rotor winding does not wait the wall thickness tubular wire, and the material of its hollow conductor is 0.1 silver-bearing copper, and its percentage by weight is Cu+Ag 〉=99.5%, Ag 〉=0.06～0.12%.
Above-mentioned rotor winding does not wait the processing technology of wall thickness tubular wire, carries out according to following procedure of processing:
1), designs the profile of required hollow conductor according to the size and the dimensional requirement of generator capacity;
2) cathode copper is joined the Medium frequency induction vacuum melting furnace and carry out melting, and, regulate Ag, Cu content in weight percentage ranges separately, smelting temperature: 1180-1220 ℃ to wherein adding Ag, smelting time: 60-80min melts out the silver-bearing copper ingot of required composition;
3) heating silver-bearing copper ingot, the silver-bearing copper ingot after the heating squeezes out the silver-bearing copper pipe bigger slightly than the overall dimension of required hollow conductor on extruder; The described minimum profile size silver-bearing copper pipe of calculating that is meant slightly greatly by certain extensibility meter;
4) adopt special-shaped mould cold-drawn technology the silver-bearing copper pipe to be carried out cold drawing, control the overall dimension of product, control the size in the hole of product, finally obtain the overall dimension of needed tubular wire by core rod by drawing die by the chain machine drawing.
Rotor winding of the present invention does not wait wall thickness tubular wire and processing technology thereof compared with prior art, and the beneficial effect that is produced is:
1) tubular wire of the present invention is mainly used in big capacity thermal power generation machine rotor winding, and 20 ℃ conductivity is not less than 56m/ Ω mm
2, tensile strength is greater than 270, and Brinell hardness is between 80 to 95.
2) tubular wire of the present invention has been eliminated the slit of product existence in the past, and radiating efficiency is improved; Simultaneously the cold-drawn technology is referred in the production process, every size, behavior tolerance are effectively controlled, working modulus is improved, reduced percent defective, reduced product cost, thereby improved Enterprises'Competitiveness.
(4) description of drawings
Accompanying drawing 1 is the processing technology theory structure schematic diagram of first embodiment of the present invention;
Accompanying drawing 3 is the processing technology theory structure schematic diagram of first embodiment of the present invention;
Accompanying drawing 4 is that the B-B of Fig. 3 is to the sectional structure schematic diagram.
Among the figure, 1, drawing die, 2, tubular wire, 3, the stretching core rod.
(5) embodiment
Do not wait wall thickness tubular wire and processing technology thereof to explain below doing below in conjunction with accompanying drawing 1-4 to rotor winding of the present invention.
Embodiment 1:
Shown in accompanying drawing 1,2, rotor winding of the present invention does not wait the wall thickness tubular wire, and its structure comprises that the cross section is square hollow conductor 1, has square single hole 2 in the hollow conductor 1, and two relative edges' of square single hole 2 thickness is identical, the thickness difference of two adjacent edges.
The material of above-mentioned hollow conductor is 0.1 silver-bearing copper, and its percentage by weight is Cu+Ag 〉=99.5%, Ag 〉=0.06～0.12%.
Above-mentioned rotor winding does not wait the processing technology of wall thickness tubular wire, carries out according to following procedure of processing:
1), designs the profile of required hollow conductor according to the size and the dimensional requirement of generator capacity;
2) cathode copper is joined the Medium frequency induction vacuum melting furnace and carry out melting, and, regulate Ag, Cu content in weight percentage ranges separately, smelting temperature: 1180-1220 ℃ to wherein adding Ag, smelting time: 60-80min melts out the silver-bearing copper ingot of required composition;
3) heating silver-bearing copper ingot, the silver-bearing copper ingot after the heating squeezes out the silver-bearing copper pipe bigger slightly than the overall dimension of required hollow conductor on extruder; The described minimum profile size silver-bearing copper pipe of calculating that is meant slightly greatly by certain extensibility meter;
4) adopt special-shaped mould cold-drawn technology the silver-bearing copper pipe to be carried out cold drawing, control the overall dimension of product, control the size in the hole of product, finally obtain the overall dimension of needed tubular wire 2 by stretching core rod 3 by drawing die 1 by the chain machine drawing.
Embodiment 2:
Shown in accompanying drawing 3,4, rotor winding of the present invention does not wait the wall thickness tubular wire, and its structure comprises that the cross section is square hollow conductor, has square diplopore in the hollow conductor, and two relative edges' of square diplopore thickness is identical, the thickness difference of two adjacent edges.
The material of above-mentioned hollow conductor is 0.1 silver-bearing copper, and its percentage by weight is Cu+Ag 〉=99.5%, Ag 〉=0.06～0.12%.
Above-mentioned rotor winding does not wait the processing technology of wall thickness tubular wire, carries out according to following procedure of processing:
1), designs the profile of required hollow conductor according to the size and the dimensional requirement of generator capacity;
2) cathode copper is joined the Medium frequency induction vacuum melting furnace and carry out melting, and, regulate Ag, Cu content in weight percentage ranges separately, smelting temperature: 1180-1220 ℃ to wherein adding Ag, smelting time: 60-80min melts out the silver-bearing copper ingot of required composition;
3) heating silver-bearing copper ingot, the silver-bearing copper ingot after the heating squeezes out the silver-bearing copper pipe bigger slightly than the overall dimension of required hollow conductor on extruder; The described minimum profile size silver-bearing copper pipe of calculating that is meant slightly greatly by certain extensibility meter;
4) adopt special-shaped mould cold-drawn technology the silver-bearing copper pipe to be carried out cold drawing, control the overall dimension of product, control the size in the hole of product, finally obtain the overall dimension of needed tubular wire 2 by stretching core rod 3 by drawing die 1 by the chain machine drawing.
The present invention also has the possibility in three holes and four holes except the embodiment of above-mentioned single hole, diplopore, its architecture and processing technology are same as embodiment 1,2, do not give unnecessary details one by one at this.
Claims (4)
1. the rotor winding does not wait the wall thickness tubular wire, comprises that the cross section is square hollow conductor, it is characterized in that, have square opening in the hollow conductor, two relative edges' of square opening thickness is identical, the thickness difference of two adjacent edges.
2. rotor winding according to claim 1 does not wait the wall thickness tubular wire, it is characterized in that, the quantity of square opening is 1-4.
3. rotor winding according to claim 1 does not wait the wall thickness tubular wire, it is characterized in that, the material of its hollow conductor is 0.1 silver-bearing copper, and its percentage by weight is Cu+Ag 〉=99.5%, Ag 〉=0.06～0.12%.
4. a rotor winding as claimed in claim 1 does not wait the processing technology of wall thickness tubular wire, it is characterized in that, carries out according to following procedure of processing:
1), designs the profile of required hollow conductor according to the size and the dimensional requirement of generator capacity;
2) cathode copper is joined the Medium frequency induction vacuum melting furnace and carry out melting, and, regulate Ag, Cu content in weight percentage ranges separately, smelting temperature: 1180-1220 ℃ to wherein adding Ag, smelting time: 60-80min melts out the silver-bearing copper ingot of required composition;
3) heating silver-bearing copper ingot, the silver-bearing copper ingot after the heating squeezes out the silver-bearing copper pipe bigger slightly than the overall dimension of required hollow conductor on extruder; The described minimum profile size silver-bearing copper pipe of calculating that is meant slightly greatly by certain extensibility meter;
4) adopt special-shaped mould cold-drawn technology the silver-bearing copper pipe to be carried out cold drawing, control the overall dimension of product, control the size in the hole of product, finally obtain the overall dimension of needed tubular wire by the stretching core rod by drawing die by drawing die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100172774A CN101968976A (en) | 2009-07-28 | 2009-07-28 | Unequal wall thickness hollow wire of rotor winding and processing technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100172774A CN101968976A (en) | 2009-07-28 | 2009-07-28 | Unequal wall thickness hollow wire of rotor winding and processing technology thereof |
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| Publication Number | Publication Date |
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| CN101968976A true CN101968976A (en) | 2011-02-09 |
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| CN2009100172774A Pending CN101968976A (en) | 2009-07-28 | 2009-07-28 | Unequal wall thickness hollow wire of rotor winding and processing technology thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290124A (en) * | 2011-06-09 | 2011-12-21 | 济南宝世达实业发展有限公司 | Special-shaped copper bars for hydroelectric generator as well as machining process and application thereof |
| CN102682873A (en) * | 2012-04-11 | 2012-09-19 | 济南宝世达实业发展有限公司 | Novel hollow conductor and manufacturing method thereof |
| CN102810348A (en) * | 2012-07-31 | 2012-12-05 | 泰兴市圣达铜业有限公司 | Hollow wire with special-shaped hole and used for turbogenerator |
| CN103559959A (en) * | 2013-11-20 | 2014-02-05 | 济南宝世达实业发展有限公司 | Two-hole hollow conductor and manufacturing method thereof |
| CN106077130A (en) * | 2016-06-28 | 2016-11-09 | 上海飞轮有色新材料股份有限公司 | Rectangle does not wait the production technology of wall thickness hollow copper conductor coil pipe |
| CN106130226A (en) * | 2016-06-28 | 2016-11-16 | 上海飞轮有色新材料股份有限公司 | Rectangle does not wait wall thickness hollow copper conductor coil pipe |
| CN106623488A (en) * | 2016-08-04 | 2017-05-10 | 河北欧通有色金属制品有限公司 | Rectangular double-hole silver-copper pipe processing method |
| CN110449476A (en) * | 2019-07-26 | 2019-11-15 | 安徽鑫旭新材料有限公司 | It is a kind of hollow from cooling big load transmission of electricity copper bar processing technology |
-
2009
- 2009-07-28 CN CN2009100172774A patent/CN101968976A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290124A (en) * | 2011-06-09 | 2011-12-21 | 济南宝世达实业发展有限公司 | Special-shaped copper bars for hydroelectric generator as well as machining process and application thereof |
| CN102682873A (en) * | 2012-04-11 | 2012-09-19 | 济南宝世达实业发展有限公司 | Novel hollow conductor and manufacturing method thereof |
| CN102682873B (en) * | 2012-04-11 | 2013-06-12 | 济南宝世达实业发展有限公司 | Hollow conductor and manufacturing method thereof |
| CN102810348A (en) * | 2012-07-31 | 2012-12-05 | 泰兴市圣达铜业有限公司 | Hollow wire with special-shaped hole and used for turbogenerator |
| CN103559959A (en) * | 2013-11-20 | 2014-02-05 | 济南宝世达实业发展有限公司 | Two-hole hollow conductor and manufacturing method thereof |
| CN103559959B (en) * | 2013-11-20 | 2017-01-04 | 济南宝世达实业发展有限公司 | Two-hole hollow conductor and preparation method thereof |
| CN106077130A (en) * | 2016-06-28 | 2016-11-09 | 上海飞轮有色新材料股份有限公司 | Rectangle does not wait the production technology of wall thickness hollow copper conductor coil pipe |
| CN106130226A (en) * | 2016-06-28 | 2016-11-16 | 上海飞轮有色新材料股份有限公司 | Rectangle does not wait wall thickness hollow copper conductor coil pipe |
| CN106623488A (en) * | 2016-08-04 | 2017-05-10 | 河北欧通有色金属制品有限公司 | Rectangular double-hole silver-copper pipe processing method |
| CN106623488B (en) * | 2016-08-04 | 2018-07-31 | 河北欧通有色金属制品有限公司 | A kind of processing method of rectangle diplopore silver-bearing copper pipe |
| CN110449476A (en) * | 2019-07-26 | 2019-11-15 | 安徽鑫旭新材料有限公司 | It is a kind of hollow from cooling big load transmission of electricity copper bar processing technology |
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Application publication date: 20110209 |