CN1159486A - Copper alloy for contact net wire - Google Patents
Copper alloy for contact net wire Download PDFInfo
- Publication number
- CN1159486A CN1159486A CN 96120446 CN96120446A CN1159486A CN 1159486 A CN1159486 A CN 1159486A CN 96120446 CN96120446 CN 96120446 CN 96120446 A CN96120446 A CN 96120446A CN 1159486 A CN1159486 A CN 1159486A
- Authority
- CN
- China
- Prior art keywords
- alloy
- copper alloy
- copper
- wire
- rare earth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Conductive Materials (AREA)
Abstract
The present invention discloses a copper base alloy. Its chemical composition is composed of (mass%) Mg 0.20-0.45 and RE (La+Ce) 0.05-0.25, and the rest is composed of Cu and inevitable impurity, in which RE is rare earth mixture whose total content is 98.5%. Said invented alloy can be made into blank whose diameter is 20mm by using continuous casting process under the condition of isolating air, then rolled and made into contact network wire with required specification. The strength of said alloy wire is 500MPa, conductivity is less than or equal to 0.0254 ohm sq.mm/m (68%1-ACS), and its softening temp. is 385 deg.C.
Description
The present invention relates to the copper alloy that a kind of high-speed electric railway contact line conducting wire is used.
Improving train speed is one of basic measures that improve railway transporting amount to shorten working time.Bullet train adopts electric traction more, and contact line conducting wire is a kind of lead that the electric locomotive collector bow slides in its underpart, and its intensity, electroconductibility, high thermal resistance, material source and price directly have influence on the reliability that stream is got in electric locomotive, work-ing life and economical effectiveness.For this reason, various countries are all at the development good combination property, and example was subjected to that electricity requires, the bow net abrasion are low and contact line conducting wire that price is cheap when the copper alloy of sufficient material source, reasonable price can satisfy the bullet train operation in order to making.
The high strength cadmium copper alloy lead over-all properties that American-European main several industrial countries adopt is better, but contains first kind toxic pollutant cadmium, has now begun to stop using.Now using more is the Ag-Sn-Cu alloyed contact line, and its intensity, wear resistance and fine copper lead difference are little, only can improve recrystallization temperature.And adopt valuable rare Ag, owing to price, material source problem, be difficult to large-scale popularization and adopt.The 500MPa level that present state-of-the-art copper alloy wire is used when the number Re330 of stock company of Deutsche Bahn (DBAG) contact system contains the copper-magnesium alloy of magnesium 0.6% (mass percent).
The lead that adopts this German Re330 copper-magnesium alloy to make: the permission service stress is that 280MPa (500MPa level), initial softening temperature are 385 ℃, so current carrying quality is good, can reach 2,000,000 shelves life, reaches the advanced standard of international approval.But this alloy magnesium content is up to 0.6%, and the flowability that adds molten copper water in man-hour is poor, and slag content is higher, so the difficult control of quality when the continuous casting blank, the product qualified rate susceptible to causes cost higher, is difficult to promote the use of in China.
The objective of the invention is to design a kind of intensity is the 500MPa level, and electric conductivity reaches 68%, and IACS, initial softening temperature are 385 ℃, and processibility is good, the copper alloy that quality product is easy to control, cost is used far below the contact line conducting wire of Re330.
The technical solution used in the present invention is: design the low magnesium alloy of a kind of rare earth, in this copper base alloy, copper guarantees that it has good conductivity, Mg, Ni, Sn micro alloying element, wherein Mg plays main solution strengthening effect, but the excessive electroconductibility to copper alloy of its add-on, processing performance all have disadvantageous effect.The introducing of rare earth removes the manufacturability improve this alloy, is beneficial to refining, and degasification and microalloying effect are outer to be significantly improved to electroconductibility intensity.The consumption of Mg of the present invention is reduced to 0.2-0.45 from 0.6, the flowability of molten copper increases, manufacturability improves, add the lead good toughness of the complex effect making of Mg-RE, electric conductivity is stable, particularly because the rare earth sufficient material source, adopt and reduce the magnesium consumption and introduce rare earth inexpensive, sufficient material source, has improved forming technology, quality product is easy to control, the qualification rate height, cost also is reduced.The concrete chemical ingredients that magnesium-rare earth of the present invention comprises is following mass percent: Mg0.20-0.45%, and RE0.05-0.25, RE refer to that La, Ce total content are 98.5% mixture, and the present invention can also contain Ni0-0.30%, Sn0-0.30%.
In above-mentioned per-cent, adjust Mg, RE, Ni, Sn shared ratio in alloy, can obtain the copper alloy wire of varying strength and electric conductivity, to satisfy the different demands in actual the use.
With the copper alloy contact wire that above-mentioned chemical composition is made, intensity can reach 450-500MPa, resistivity≤0.0254 Ω mm
2/ m (electric conductivity is 68%IACS), 385 ℃ of initial softening temperatures can satisfy the service requirements of current high speed, heavy railway contact line conducting wire fully.And processibility is good, constant product quality, and cost is far below the Re330 of import.
The present invention is described in further detail below in conjunction with embodiment:
The embodiment numbering | Chemical ingredients (%) | Performance is not less than | Principal character | ||||||
?Mg | ?Ni | ??Sn | ??RE | ????Cu | ??α(MPa) | ??δ(%) | Electric conductivity (%) | ||
????1 | ?0.25 | - | ?- | ??0.25 | ????" | ????522 | ????3.2 | ????73.10 | Composition is simple, good combination property, meets the demands |
????2 | ?0.35 | - | ?- | ??0.18 | ????" | ????500 | ????5.0 | ????68.15 | Composition is simple, meet the demands |
??3 | ?0.45 | - | ?- | ??0.05 | ????" | ????561 | ????2.5 | ????67.90 | Intensity height, composition are simple |
????4 | ?0.20 | - | ?0.30 | ??0.08 | ????" | ????498 | ????4.5 | ????70.50 | Good combination property does not contain Ni |
??5 | ?0.20 | 0.20 | ?- | ??0.1 | ????" | ????604 | ????8.0 | ????67.80 | Intensity height, good toughness |
????6 | ?0.35 | 0.05 | ?0.10 | ??0.08 | ????" | ????635 | ????3.0 | ????68.15 | Good combination property, the intensity height |
??7 | ?0.20 | 0.30 | ?- | ??0.08 | ????" | ????501 | ????5.0 | ????67.90 | Good combination property, Ni cost height |
????8 | ?0.3 | 0.20 | ?- | ??0.10 | Surplus | ????505 | ????4.0 | ????68.00 | Good combination property, but Ni cost height |
Above performance is made Φ 8 leads for making Φ 16 blanks earlier, rerolling, and adopts GB3048.2, the GB4909.3 standard testing result.
After taking by weighing each composition weight respectively by above-mentioned routine 1-8: fusing electrolysis Cu adds infusibility more on request earlier and is difficult for the alloying constituent of oxidation such as pure Ni, Sn element, after treating is clear, add master alloy M again and carry out refining, being smelt the back adopts continuous metal cast process to make blank under the secluding air condition, be rolled into required section size and shape lead, its initial softening temperature all can reach 385 ℃.
In refer to alloy M: copper-magnesium master alloy Mg mass parts 10-15%; Copper-rare earth intermediate alloy contains RE10-15%; RE refers to that the La-Ce total content is 98.5% mixture.
The making of master alloy: after the copper fusing, make with the bell jar plunging.Mg is a main alloying element among the present invention, and it is to copper alloy electroconductibility, and toughness influences less solution strengthening agent, and material source is abundant.
RE is a main alloying element: degasification in the refining, make copper alloy toughness, and the agent of electroconductibility enhanced microalloying, its material source enrich.Because the complex effect of Mg, RE adopts low magnesium (≤0.45%) still to make good combination property, intensity reaches the copper alloy wire of 500MPa level again.1,2,3 embodiment show: alloying constituent of the present invention is simple, over-all properties satisfies service requirements.4,5,6,7,8 embodiment alloys, can obtain comprehensive good, toughness is high or intensity is high copper alloy respectively.
Prove that by embodiment the standard that copper alloy technical feature of the present invention reaches Re330 is that intensity is the 500MPa level, price is low because rare earth has been added in the low magnesium of employing≤0.45, and processibility is good again, quality product easy to control in the production is a kind of copper alloy for contact net wire that is easy to apply.
Claims (2)
1, the copper alloy used of a kind of contact line conducting wire is characterized in that chemical ingredients contains (quality %): Mg0.2-0.45, RE (La+Ce) 0.05-0.25, and surplus is Cu and unavoidable impurities, wherein RE refers to that the LaCe total content is 98.5% mishmetal.
2, copper alloy according to claim 1 is characterized in that, also contains Ni0-0.30, Sn0-0.30.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN96120446A CN1043252C (en) | 1996-11-01 | 1996-11-01 | Copper alloy for contact net wire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN96120446A CN1043252C (en) | 1996-11-01 | 1996-11-01 | Copper alloy for contact net wire |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1159486A true CN1159486A (en) | 1997-09-17 |
CN1043252C CN1043252C (en) | 1999-05-05 |
Family
ID=5126337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96120446A Expired - Fee Related CN1043252C (en) | 1996-11-01 | 1996-11-01 | Copper alloy for contact net wire |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1043252C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1929037B (en) * | 2006-08-25 | 2012-11-07 | 邢台鑫晖铜业特种线材有限公司 | Copper alloy with excellent combination property for manufacturing elements of contacting net |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6086231A (en) * | 1983-10-14 | 1985-05-15 | Nippon Mining Co Ltd | High-strength conductive copper alloy |
JP2868221B2 (en) * | 1989-03-01 | 1999-03-10 | 田中貴金属工業株式会社 | Sliding contact material |
CN1032824C (en) * | 1993-09-06 | 1996-09-18 | 铁道部科学研究院机车车辆研究所 | Copper alloy contact wire |
-
1996
- 1996-11-01 CN CN96120446A patent/CN1043252C/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1929037B (en) * | 2006-08-25 | 2012-11-07 | 邢台鑫晖铜业特种线材有限公司 | Copper alloy with excellent combination property for manufacturing elements of contacting net |
Also Published As
Publication number | Publication date |
---|---|
CN1043252C (en) | 1999-05-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110284018B (en) | Environment-friendly high-missile-resistance corrosion-resistant copper alloy and production method of plate and strip thereof | |
CN104946936B (en) | A kind of aerial condutor high conductivity rare earth duralumin monofilament material | |
CN102703754B (en) | Cu-Ni-Si-based alloy and preparation method thereof | |
CN101265536A (en) | High-strength high-conductivity copper alloy and preparation method thereof | |
CN104164589B (en) | A kind of high-strength wearable copper alloy and preparation method thereof | |
CN1940104A (en) | Copper alloy for lead-wire frame and its production | |
CN113073268B (en) | Wire rod for copper-clad steel wire | |
CN102560190A (en) | High-zinc leadless brass alloy and preparation method thereof | |
CN107604202A (en) | A kind of high-performance phosphorus bronze band and preparation method thereof | |
CN108754221A (en) | Bullet train motor frictional disk material and preparation method thereof | |
CN101492780A (en) | Trace lead brass alloy and producing method | |
CN113073229B (en) | Tin brass alloy and preparation method thereof | |
CN1043252C (en) | Copper alloy for contact net wire | |
CN1177069C (en) | Copper alloy material for contact net wire | |
CN101255507A (en) | Rear-earth-containing polybasic white gold alloy and preparation method thereof | |
CN101250644A (en) | Copper-base alloy capable of being used for lead frame material and manufacture method thereof | |
CN108929968A (en) | A kind of production technology of high conductivity copper alloy wire | |
CN114231849B (en) | Steel for offshore wind power turntable bearing and smelting method thereof | |
CN111411258B (en) | Cu-Sn alloy superfine wire with high strength and high conductivity and preparation method thereof | |
CN102041407B (en) | High-strength high-conductivity micro-boron copper alloy material and preparation method thereof | |
CN113005326B (en) | Copper alloy strip and preparation method thereof | |
CN108754214A (en) | A kind of combarloy silver tin evanohm Strip and its prepare processing method | |
CN1160771A (en) | Separating-hardened copper alloy | |
CN106567022A (en) | Rare earth copper alloy material and preparation method thereof | |
CN1084577A (en) | Copper alloy contact wire |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1022000 Country of ref document: HK |