CN1987441A - Method for detecting regenerated copper wire material - Google Patents
Method for detecting regenerated copper wire material Download PDFInfo
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- CN1987441A CN1987441A CN 200610155183 CN200610155183A CN1987441A CN 1987441 A CN1987441 A CN 1987441A CN 200610155183 CN200610155183 CN 200610155183 CN 200610155183 A CN200610155183 A CN 200610155183A CN 1987441 A CN1987441 A CN 1987441A
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- copper wire
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- electric bridge
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The method prepares linear type sliding rheostat as reference resistance from selected pure copper wire in given diameter and length. Copper wire to be measure in same length is selected as resistance to be measured. A conducting bridge is constituted from the resistance to be measured, the reference resistance, and other two fixed resistances with same value of resistance. The conducting bridge is connected to AC power supply. Primary coil of step up transformer is connected to two middle points; and secondary coil of step up transformer is connected to AC voltmeter. Adjusting connection length of the reference resistance to compensate resistance difference caused by different diameter of wire. AC voltmeter determines whether bridge is balanced or not. Since resistivity of copper material of containing impurity is different from pure copper, determining resistance value of regenerative copper wire can check quality of regenerative copper wire.
Description
Technical field
The present invention relates to metal material material detection method, particularly to the improvement of regenerated copper wire material detection method.
Background technology
It mainly is by spectral analysis that metal material detects, be METAL HEATING PROCESS to be arrived vapor state, the emission spectrum of metal to be measured analyzed, because the emission spectrum wavelength difference of different metal by spectroanalysis instrument with electric arc, by spectrum line and power thereof, detect metal components.Secondary metal is because the raw material complexity easily is mingled with impurity, and the homogeneity of product of each batch is difficult for grasping aborning, and product quality is wayward.Regenerated copper wire is used to produce enameled wire, electric wire, cable, and material is required height, uses the spectrographic method troublesome poeration, is difficult for promoting.
Summary of the invention
The object of the invention is to provide a kind of and differentiates the detection method of copper material quality by detecting copper material resistivity, produces with convenient.
The solution of the present invention is: a kind of method that detects regenerated copper wire material, it is the pure copper wires of choosing special diameter and length, make the linear pattern slide rheostat, as reference resistance, copper wires to be detected is chosen equal length, as testing resistance, form electric bridge with the fixed resistance of reference resistance and other two similar resistance, electric bridge is connected on the AC power, insert the primary coil of step-up transformer at two intermediate points of electric bridge, connect A.C. voltmeter on the secondary coil of step-up transformer, the resistance difference that the diameter difference of the access length compensation wire rod of adjusting reference resistance causes, judge whether balance of electric bridge by A.C. voltmeter, judge the resistance sizes of regenerated copper wire, to detect the material of regenerated copper wire.
On described linear pattern slide rheostat, be provided with scale, be marked with the substitutional resistance scale after converting by diameter proportion with testing resistance on the scale.
Advantage of the present invention is: because it is different with fine copper to contain the copper material resistivity of impurity, itself and satisfactory pure copper wires are carried out the resistance value comparison, judge whether it contains impurity and impure amount what.This method has accurate, the easy advantage of detection, uses in being suitable for producing.
Description of drawings
The invention will be further described with embodiment with reference to the accompanying drawings below.
Fig. 1 is an electrical schematic diagram of the present invention.
Fig. 2 is the structural representation of linear pattern slide rheostat.
Mark among Fig. 1: R1 testing resistance, R2 reference resistance, R3, R4 fixed resistance, B step-up transformer, U A.C. voltmeter.
Mark among Fig. 2: 1 connector, 2 pure copper wires, 3 movable contacts, 4 leads, 5 scales.
Embodiment
Referring to Fig. 2, the reference resistance R2 of embodiment chooses the pure copper wires that diameter is Φ 1mm, and length is 1m, makes the linear pattern slide rheostat, as reference resistance.Described linear pattern slide rheostat is made up of pure copper wires 2, connector 1, movable contact 3, silver-colored lead 4, the pure copper wires 2 other scales 5 that are provided with, be marked with the substitutional resistance scale after converting by diameter proportion with testing resistance on the scale 5, as when testing resistance R1 diameter is Φ 2mm, the standard resistance is 1/4 of a Φ 1mm copper material under the equal length, at this moment, movable contact 3 is moved to Φ 2mm place on the scale 5, i.e. 1/4 place of total length.
Referring to Fig. 1, during use, copper wires to be detected is chosen equal length 1m, as testing resistance R1, form electric bridge with fixed resistance R3, the R4 of reference resistance R2 and other two similar resistance, electric bridge is connected on the AC power, insert the primary coil of step-up transformer B at two intermediate points of electric bridge, connect A.C. voltmeter U on the secondary coil of step-up transformer B, the resistance difference that the diameter difference of the access length compensation wire rod of adjusting reference resistance R2 causes, by A.C. voltmeter U whether reading is arranged, judge whether balance of electric bridge.
When copper wires material to be detected meets the requirements, R1=R2, step-up transformer B does not have potential difference (PD) in two ends, and B is output as 0, and U does not have indication, and it is qualified that copper wires material to be detected is worked as in expression.
When copper wires to be detected contains impurity, poorly conductive, resistivity is big, R1＞R2, there is potential difference (PD) at step-up transformer B two ends, amplify output through B, on U, indicate, expression when copper wires material to be detected defective, and U to go up indicated value big more, illustrate that impurity content is many more.
By comparison resistance, detect the material of copper wires easily, use in being fit to produce.
Claims (2)
1. method that detects regenerated copper wire material, it is characterized in that: the pure copper wires of choosing special diameter and length, make the linear pattern slide rheostat, as reference resistance (R2), copper wires to be detected is chosen equal length, as testing resistance (R1), fixed resistance (R3 with reference resistance (R2) and other two similar resistance, R4) form electric bridge, electric bridge is connected on the AC power, insert the primary coil (B) of step-up transformer at two intermediate points of electric bridge, connect A.C. voltmeter (U) on the secondary coil of step-up transformer (B), the resistance difference that the diameter difference of the access length compensation wire rod of adjusting reference resistance (R2) causes, judge whether balance of electric bridge by A.C. voltmeter (U), judge the resistance sizes of regenerated copper wire, to detect the material of regenerated copper wire.
2. the method for detection regenerated copper wire material as claimed in claim 1 is characterized in that: be provided with scale (5) on described linear pattern slide rheostat, be marked with the substitutional resistance scale after converting by diameter proportion with testing resistance on the scale (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610155183 CN1987441A (en) | 2006-12-13 | 2006-12-13 | Method for detecting regenerated copper wire material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610155183 CN1987441A (en) | 2006-12-13 | 2006-12-13 | Method for detecting regenerated copper wire material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1987441A true CN1987441A (en) | 2007-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610155183 Pending CN1987441A (en) | 2006-12-13 | 2006-12-13 | Method for detecting regenerated copper wire material |
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| CN (1) | CN1987441A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101878079B (en) * | 2007-11-30 | 2012-12-19 | 古河电气工业株式会社 | Method of regulating composition of molten metal during continuous casting and apparatus therefor |
| CN103604837A (en) * | 2013-11-28 | 2014-02-26 | 国家电网公司 | Distribution transformer coil material identification method |
| CN104020354A (en) * | 2014-06-19 | 2014-09-03 | 上海市纺织科学研究院 | Method for detecting specific resistance of short fibers of chemical fibers |
| CN104677927A (en) * | 2015-03-10 | 2015-06-03 | 国网四川省电力公司电力科学研究院 | Distribution transformer winding material detection system and method |
| CN106404844A (en) * | 2016-08-26 | 2017-02-15 | 国网山东省电力公司高唐县供电公司 | Transformer winding material identification method |
-
2006
- 2006-12-13 CN CN 200610155183 patent/CN1987441A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101878079B (en) * | 2007-11-30 | 2012-12-19 | 古河电气工业株式会社 | Method of regulating composition of molten metal during continuous casting and apparatus therefor |
| CN103604837A (en) * | 2013-11-28 | 2014-02-26 | 国家电网公司 | Distribution transformer coil material identification method |
| CN103604837B (en) * | 2013-11-28 | 2015-12-02 | 国家电网公司 | The recognition methods of distribution transformer coil material |
| CN104020354A (en) * | 2014-06-19 | 2014-09-03 | 上海市纺织科学研究院 | Method for detecting specific resistance of short fibers of chemical fibers |
| CN104677927A (en) * | 2015-03-10 | 2015-06-03 | 国网四川省电力公司电力科学研究院 | Distribution transformer winding material detection system and method |
| CN104677927B (en) * | 2015-03-10 | 2017-12-01 | 国网四川省电力公司电力科学研究院 | Distribution transformer winding wood properly test system and method |
| CN106404844A (en) * | 2016-08-26 | 2017-02-15 | 国网山东省电力公司高唐县供电公司 | Transformer winding material identification method |
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