CN1876863A - Cable shielding copper alloy belt and manufacturing method thereof - Google Patents
Cable shielding copper alloy belt and manufacturing method thereof Download PDFInfo
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- CN1876863A CN1876863A CN 200510010842 CN200510010842A CN1876863A CN 1876863 A CN1876863 A CN 1876863A CN 200510010842 CN200510010842 CN 200510010842 CN 200510010842 A CN200510010842 A CN 200510010842A CN 1876863 A CN1876863 A CN 1876863A
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Abstract
The invention relates to a cable shielding copper alloy belt and its manufacturing process, in which the component is prepared by adding micro chromium, titanium and lanthanum alloying in copper base. The product is gained by several processing steps including manufacturing intermediate alloy and cast ingot, removing surface oxide, homogenization, cold reducing and annealing.
Description
A kind of cable shielding copper alloy belt and manufacture method.The invention belongs to the electric industry Industrial materials.
Cable is the important materials of power industry, in high middle voltage cable is produced, and a large amount of shielding copper strips that use, it must keep the excellent properties of high conductivity and thermal conductivity, has the ductility that high intensity is become reconciled again.Make the shielding copper strips that uses now, in winding process, because the insufficient strength height, broken belt often appears in winding process, and degree of taking up is low, also has owing to easily oxidation, and behind the certain hour, the surface can oxidation stain influence problems such as electric conductivity.
Purpose of the present invention is exactly to find a kind of suitable copper alloy compositions, and the copper alloy belt that produces should keep high conductivity, thermal conductivity, high flexural strength and anti-tarnishing ability are well arranged again, and broken belt does not appear in winding process, degree of taking up height, behind the certain hour, surperficial nondiscoloration.
Technical scheme of the present invention is by selecting trace element, add in the copper, make its alloying, improves that its performance realizes.Its technical characterictic is: a kind of cable shielding copper alloy belt, and its component is weight percentage: Cr 0.10～0.30%, and Ti 0.05～0.20%, and La 0.01～0.10%, and surplus is a copper, each component sum is 100%.The manufacture method step of cable shielding copper alloy belt is: the metal of 1, selecting purity 〉=99.9%, in a vacuum in the frequency induction furnace, make the middle copper alloy of various weight percents: Cr 9.5% Si28.0% Cu62.5% respectively, Ti 10.5% Si28.0% Cu 61.5%, La 10% Si28.0% Cu 62.0%, melting condition is vacuum tightness～0.1333Pa, 1100～1200 ℃ of temperature, melting 0.5 hour.2, according to the requirement of cable shielding copper alloy belt component, after the copper batching with middle copper alloy and purity 〉=99.9, in pack into plumbago crucible or the action at a distance of clay graphite earthenware, cover with borax or charcoal, melting in medium-frequency induction furnace or main frequency furnace, temperature 1100-1200 ℃, 20 minutes time.3, melted alloy pours in the steel die of preheating or the graphite mo(u)ld and casts.4, remove oxide compound or other slag things on alloy cast ingot surface, wound is fallen the about 1-2mm thickness of epidermis; 5, wound is fallen the alloy cast ingot of epidermis 900 ℃ of temperature, homogenizing was handled 1 hour, be cooled to room temperature then continuously, be cold-rolled to about the about 0.8mm of thickness, rolling reduction 5070%, temperature 450-500 ℃ of annealing 1 hour, the back of coming out of the stove was to soak 30-30 minute in the dilution heat of sulfuric acid of 20-30% in weight percent concentration, removes surface scale.6, the copper alloy belt of scale removal when rolling reduction is 50%-70%, is measured corresponding Vickers' hardness and tensile strength.7, with rolling reduction be the copper alloy belt of 50%-70%,, annealed 30 minutes at temperature 400%-500 ℃.
Embodiment
Embodiment 1, cable shielding copper alloy belt weight percentages of components are Cr0.25% Ti0.08% La0.04%Cu99.63%
Embodiment 2 cable shielding copper alloy belt weight percentages of components are Cr.2% Ti0.1% La0.05％Cu99.，65％
Embodiment 3 cable shielding copper alloy belt weight percentages of components are Cr0.15% Ti0.12% La0.08％Cu99.64％
Example 1, example 2, example 3 cable shielding copper alloy belt manufacture method: through 1, in a vacuum frequently in the induction furnace, at vacuum tightness 0.1333Pa, the middle copper alloy Cr9 of various weight percents is made in temperature 1100-1200 ℃ of melting 0.5 hour respectively.5% Si28.0% Cu62.5, Ti10.5% Si28.0% Cu62.5%, La10% Si28% Cu62%; 2, according to example 1, example 2, example 3 cable shielding copper alloy belt component requirements, in pack into after the copper of middle copper alloy and purity 99.9% batching graphite or clay-graphite crucible, cover with borax or charcoal, refining in medium-frequency induction furnace or main frequency furnace, temperature 1100-1200 ℃ of 20 minutes time, 3, alloy that refining is good, pour in the steel die of preheating or the graphite mo(u)ld and be cast into alloy pig, 4, remove oxide compound or other slag things on alloy cast ingot surface, dig the about 1-2mm thickness of epidermis; 5, the alloy cast ingot that digs epidermis was handled 1 hour in 900 ℃ of homogenizing of temperature, be cooled to room temperature then continuously, be cold-rolled to about the about 0.8mm of thickness, rolling reduction is 50-70%, and temperature 450-500 ℃ of annealing 1 hour, the back of coming out of the stove was to soak 20-30 minute in the dilution heat of sulfuric acid of 2-3% in weight percent concentration, scale removal, 6, the copper alloy belt of scale removal about temperature 400-500 ℃, was annealed 30 minutes.
The material property measuring result of the cable shielding copper alloy belt of each embodiment is providing in the tabulation down.
The performance measurement of table 1 cable shielding copper alloy belt
| Label | Resistivity n Ω/m | Tensile strength (MPa) | Vickers' hardness (HV) | Unit elongation % |
| Example 1 | 20.2 | 548 | 158 | 33 |
| Example 2 | 20.5 | 550 | 160 | 35 |
| Example 3 | 20.6 | 552 | 159 | 34 |
Table 2 machining deformation amount is to the influence of copper alloy belt bamboo energy
Get the example 1 copper alloy experiment after the cleaning
| Deflection (%) | 50 | 60 | 70 |
| Resistivity (n Ω/m) | 19.5 | 20.5 | 22.8 |
| Tensile strength (MPa) | 512 | 550 | 570 |
| Vickers' hardness | 145 | 161 | 173 |
Table 3 annealing temperature is to Effect on Performance
| Annealing temperature ℃ | 400 | 450 | 500 |
| Resistivity n Ω/m | 19.1 | 18.0 | 17.5 |
| Tensile strength MPa | 510 | 455 | 420 |
| Vickers hardness hv | 150 | 145 | 120 |
| Unit elongation (%) | 15 | 35 | 40 |
Table 4 anti-discolouring power observations
Get purity and be 99.9 copper strips and example 1 copper alloy belt, put the what damp atmosphere, temperature is in the environment between 25-35 ℃, through 50 days, to adopt spectrophotometer and visual colorimetric determination surface measurements tonal variation.
| Material | The fine copper band | Copper alloy | ||||||
| Fate | 10 | 20 | 30 | 50 | 10 | 20 | 30 | 50 |
| Color | Do not have and become | Duskiness | Secretly | Duskiness is black | Do not have and become | Do not have and become | Do not have and become | Not obvious |
The performance measurement result of the cable shielding copper alloy belt that the good effect of invention is invented shows, cable shielding copper alloy belt has good electricity and mechanical property, kept higher electrical conductivity, copper strips tensile strength and Vickers hardness have been improved, it is low to have solved known cable shield copper strips intensity, the recurrent broken belt problem of winding process. Strengthened simultaneously the anti-tarnishing ability of copper strips, in dry environment nondiscolouring half a year. Improve efficient and yield rate that cable is produced, improved cable performance.
Claims (2)
1, a kind of cable shielding copper alloy belt, it is characterized in that its weight percentages of components is: Cr0.1～0.3%Ti0.05～0.2% La0.01～0.1% surplus is a copper, each component sum is 100%.
2, a kind of manufacture method of cable shielding copper alloy belt is characterized in that:
2.1 in a vacuum in the frequency induction furnace, in vacuum tightness is 0.1333Pa, 1100～1200 ℃ of conditions of temperature, melting 30 minutes, make the middle copper alloy of various components respectively, its weight percent is: Cr9.5% Si28.0%Cu62.5%, Ti10.5% Si28.0% Cu61.5%, La10% Si28.0%Cu62%;
2.2, be after 99.9% copper is prepared burden, in pack into graphite or the clay plumbago crucible with copper alloys in the middle of various and purity according to the requirement of cable shielding copper alloy belt component, with borax or charcoal covering surfaces, refining in medium-frequency induction furnace or main frequency furnace, 1100～1200 ℃ of temperature, 20 minutes time;
2.3 the alloy that refining is good pours in the steel die or clay-graphite crucible of preheating, waters and makes alloy pig;
2.4 remove oxide compound or other slag things of alloy casting ingot surface, dig the about 1～2mm thickness of epidermis;
2.5 the alloy cast ingot that digs epidermis is 900 ℃ of temperature, homogenizing was handled 1 hour, be cooled to room temperature then continuously, being cold-rolled to thickness is about 0.8mm, rolling reduction is 50～70%, 450～500 ℃ of temperature annealing 1 hour, the back of coming out of the stove was soaked scale removal 20～30 minutes in weight percent concentration is 2～3% dilution heat of sulfuric acid;
2.6 the copper alloy belt of scale removal 400～500 ℃ of temperature, was annealed 30 minutes, measured the electric property and the mechanical property parameters of material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510010842 CN1876863A (en) | 2005-06-08 | 2005-06-08 | Cable shielding copper alloy belt and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510010842 CN1876863A (en) | 2005-06-08 | 2005-06-08 | Cable shielding copper alloy belt and manufacturing method thereof |
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| CN1876863A true CN1876863A (en) | 2006-12-13 |
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| CN 200510010842 Pending CN1876863A (en) | 2005-06-08 | 2005-06-08 | Cable shielding copper alloy belt and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880846A (en) * | 2010-07-19 | 2010-11-10 | 吴江市巨龙金属带箔有限责任公司 | Production process of cladding copper strip for ultra-soft fiber-optic cable |
| CN104942293A (en) * | 2015-06-26 | 2015-09-30 | 中国船舶重工集团公司第七二五研究所 | Manufacturing method of aluminum oxide copper liner for pipeline welding internal jointing device |
-
2005
- 2005-06-08 CN CN 200510010842 patent/CN1876863A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880846A (en) * | 2010-07-19 | 2010-11-10 | 吴江市巨龙金属带箔有限责任公司 | Production process of cladding copper strip for ultra-soft fiber-optic cable |
| CN104942293A (en) * | 2015-06-26 | 2015-09-30 | 中国船舶重工集团公司第七二五研究所 | Manufacturing method of aluminum oxide copper liner for pipeline welding internal jointing device |
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