CN109504865A - It is applicable in the high-strength CTB alloy shaped silk and preparation method of electrically conductive elastic component - Google Patents

It is applicable in the high-strength CTB alloy shaped silk and preparation method of electrically conductive elastic component Download PDF

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Publication number
CN109504865A
CN109504865A CN201811428396.4A CN201811428396A CN109504865A CN 109504865 A CN109504865 A CN 109504865A CN 201811428396 A CN201811428396 A CN 201811428396A CN 109504865 A CN109504865 A CN 109504865A
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shaped silk
cold
alloy
silk
rolling
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CN109504865B (en
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魏然
王超
郭文东
李崇巍
刘海稳
章清泉
吴会云
文新理
李国超
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BEIJING BEIYE FUNCTIONAL MATERIALS Corp
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BEIJING BEIYE FUNCTIONAL MATERIALS Corp
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C9/00Alloys based on copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/026Alloys based on copper

Abstract

A kind of high-strength CTB alloy shaped silk being applicable in electrically conductive elastic component and preparation method, belong to CTB alloy technical field.Chemical component mass percent are as follows: C 0~0.01%, Ti 2.6~3.4%, Ce 0.001~0.2%, W+Ta+Fe+Hf≤0.3%, surplus are Cu and inevitable impurity.Preparation process includes: vacuum metling, forging, hot rolling, solid solution, cold-drawn circle silk, solid solution, cold rolling shaped silk, aligning, timeliness, polishing.Final products performance are as follows: tensile strength is 1130~1230MPa, yield strength is 1028~1110MPa, thermal coefficient is 92~125W/ (m DEG C), conductivity is 19~27%IACS, crystallite dimension is 5.6~44.9 μm, hardness is 320~370HV, perpendicular to rolling to 90-degree bent flawless.The advantage is that the matching of alloy shaped silk high intensity, high heat conductance and high conductivity meets requirement of the electrically conductive elastic component to intensity, heat dissipation performance.

Description

It is applicable in the high-strength CTB alloy shaped silk and preparation method of electrically conductive elastic component
Technical field
The invention belongs to CTB alloy technical fields, more particularly to a kind of high strength titanium for being applicable in electrically conductive elastic component Copper alloy shaped silk and preparation method.
Background technique
The strong Cu alloy material of superelevation is China's strategy type new industry, and it is super that superelevation strong elasticity copper alloy refers mainly to tensile strength The electrically conductive elastic copper alloy of 1000MPa is crossed, they, which are mainly used in, prepares electrically conductive elastic component, such as machine instrumentation, mold, temperature Spend controller, relay, auto-parts etc..Beryllium-bronze is typical precipitation strength type alloy, because it is with high intensity, hard Degree, elastic limit, and there are the series of advantages such as anti-corrosion, wear-resisting, endurance, low temperature resistant, it is used widely, is known as " king of coloured elastic material ".However, the beryllium in beryllium-bronze has toxicity, the safety issue in beryllium-bronze production and use is not Hold and ignores.
Titan bronze is a kind of novel copper-based precipitation strength type elastic alloy occurred phase late 1950s, multiple countries Scholar research carried out to the alloying component of titan bronze, mechanical performance etc., and part replaces beryllium-bronze, for manufacturing essence Close instrument, the elastic element of instrument, interconnector and wear part etc..Currently, the CTB alloy trade mark mainly have HPTC, NKT322, YCuT-M,YCuT-F.It becomes increasingly complex with the development of science and technology with progress to adapt to increasingly harsher operating condition Design structure, the shape, intensity, heat dissipation performance etc. of electrically conductive elastic component are required it is higher and higher, thus to CTB alloy The matching of high-intensitive, high heat conductance and high conductivity proposes requirements at the higher level: tensile strength >=1100MPa, and yield strength >= 1000MPa, thermal coefficient >=90W/ (m DEG C), conductivity >=19%IACS, perpendicular to rolling to 90-degree bent flawless.
Summary of the invention
The purpose of the present invention is to provide a kind of high strength titanium copper alloy shaped silk for being applicable in electrically conductive elastic component and systems Preparation Method, tensile strength >=1100MPa, yield strength >=1000MPa, thermal coefficient >=90W/ (m DEG C), conductivity >= 19%IACS, perpendicular to rolling to 90-degree bent flawless.In order to achieve the above objectives, the technical solution adopted in the present invention is as follows:
A kind of chemical component mass percent of high strength titanium copper alloy shaped silk are as follows: C 0~0.01%, Ti 2.6~ 3.4%, Ce 0.001~0.2%, W+Ta+Fe+Hf≤0.3%, surplus are Cu and inevitable impurity.
The addition of C:C element, on the one hand generates TiC in conjunction with Ti, and Dispersed precipitate can significantly improve alloy in crystal boundary Intensity;On the other hand, the resistivity that oversaturated Ti advantageously reduces alloy is consumed.
The addition of Ce:Ce element is conducive to purify alloy crystal boundary, improves the processing performance of alloy.W, Ta, Hf and Fe: micro- The addition for measuring W, Ta, Hf can be used as crystallization nuclei refinement crystal grain, play solution strengthening effect, further increase the strong of alloy The addition of degree, Fe element improves alloy processing performance.
Alloy of the present invention uses following production technology: vacuum induction furnace smelting is used, sufficiently to reduce and remove in alloy Gas and inclusion content.Alloy after smelting is forged, hot rolling, solid solution, cold-drawn circle silk, solid solution, cold rolling shaped silk, rectifys Directly, the processes such as timeliness, polishing obtain finished product, and specific production technology is as follows:
(1) vacuum metling: crucible is packed into after relevant raw materials mixing.Alloy refining temperature is 1200~1250 DEG C, tapping Temperature is 1160~1200 DEG C;
(2) square billet of (30 × 30)~(110 × 110) mm forging, hot rolling: is forged at 700~920 DEG C;After forging Square billet carries out hot rolling at 700~920 DEG C, obtains wire rod, and hot rolling total deformation is 90~99%, 7~Φ of wire rod diameter Φ 10mm;Wire rod is dissolved at 700~850 DEG C, soaking time is 0.5~2h;
(3) wire rod cold-drawn, solid solution: is subjected to multiple cold-drawn, solid solution to appropriate size;Wherein the control of drawing deformation amount is 30 ~80%;Alloy wire between cold-drawn passage carries out solution treatment in protective atmosphere, and solid solubility temperature is 700~850 DEG C;Heat preservation Time is 0.5min~10min;
(4) cold rolling shaped silk: the solid solution state silk material that (3) are obtained passes through corresponding hole type roll, is replaced by solid solution, cold rolling It carries out being machined to trimmed size (cold rolling state) shaped silk;Shaped silk cold rolling reduction is 10~40%;Solid solubility temperature be 700~ 850℃;Soaking time is 0.5min~10min;
(5) align: the shaped silk obtained to step (4) is aligned;
(6) timeliness: timeliness is carried out to the shaped silk that step (5) obtains, aging temp is 350~500 DEG C, and aging time is 1h~for 24 hours;
(7) it polishes: shaped silk surface being processed by shot blasting as needed.
Using the above method produce alloy strip steel rolled stock, tensile strength be 1130~1230MPa, yield strength be 1028~ 1100MPa, thermal coefficient are 92~125W/ (m DEG C), and conductivity is 19~27%IACS, and crystallite dimension is 5.6~44.9 μ M, hardness is 320~370HV, perpendicular to rolling to 90-degree bent flawless.Alloy high strength, high heat conductance and high conductance of the present invention The matching of rate meets the intensity of electrically conductive elastic component, the requirement of heat dissipation performance.
Detailed description of the invention
Fig. 1 is shaped silk schematic cross-section prepared by embodiment 1.
Fig. 2 is shaped silk schematic cross-section prepared by embodiment 2.
Fig. 3 is shaped silk schematic cross-section prepared by embodiment 3.
Specific implementation method
Technical solution of the present invention is illustrated below by embodiment.
Embodiment 1:
Alloy specific chemical composition mass percent are as follows: C:0.005%, Ti:2.7%, Ce:0.05%, W:0.03%, Fe:0.16%, remaining Cu and inevitable impurity.
Titanium sponge that cathode copper that purity is 99.9%, purity are 99.9%, C, Fe, W and Ce are packed into after mixing in proportion Crucible.It is smelted in vaccum sensitive stove, alloy refining temperature is 1250 DEG C, and tapping temperature is 1200 DEG C, is cast into steel ingot. Steel ingot is swaged into 40 × 40mm square billet in 850 DEG C of heat preservations, is Φ 8mm wire rod in 900 DEG C of heat preservation hot rollings, hot rolling deformation amount is 97%. Solution treatment is carried out to wire rod after hot rolling, solid solubility temperature is 850 DEG C, soaking time 2h.Then solid solution state silk material is carried out cold It pulls out, is cold drawing to Φ 6mm, drawing deformation amount is 43.75%;Through 850 DEG C, after heat preservation 2min solid solution, to solid solution state silk material through hole Type roller is rolled, and breaking down deflection is 30.4%, then carries out 850 DEG C, is kept the temperature 1min solution treatment, is continued finished product and roll System, finished product cold rolling reduction are 15%, finally obtain shaped silk as shown in Figure 1.Then shaped silk is aligned, then into 400 DEG C of row, 8h ageing treatment.The alloy shaped silk material produced using the above method, tensile strength 1140MPa, yield strength For 1050MPa, thermal coefficient is 95W/ (m DEG C), and conductivity 21%IACS, crystallite dimension is 15 μm, hardness 330HV, Perpendicular to rolling to 90-degree bent flawless.
Embodiment 2:
Alloy specific chemical composition mass percent are as follows: C:0.003%, Ti:3.0%, Ce:0.05%, Ta:0.04%, Hf:0.06%, Fe:0.1%, remaining Cu and inevitable impurity.
After titanium sponge that cathode copper that purity is 99.9%, purity are 99.9%, C, Ta, Fe, Hf and Ce are mixed in proportion It is packed into crucible.It is smelted in vaccum sensitive stove, alloy refining temperature is 1240 DEG C, and tapping temperature is 1180 DEG C, is cast into Steel ingot.Steel ingot is swaged into 35 × 35mm square billet in 840 DEG C of heat preservations, in 900 DEG C of heat preservation hot rollings, wire rod diameter Φ 7mm, hot rolling deformation amount It is 97%.Wire rod is dissolved after hot rolling, and 850 DEG C of solid solubility temperature, soaking time 2h carries out cold-drawn after solid solution, is cold drawing to Φ 4.0mm, drawing deformation amount are 67%, are then dissolved at 850 DEG C, soaking time 2min.State silk material through hole will be dissolved Type roller is rolled, and shaped silk as shown in Figure 2, cold rolling reduction 31% are obtained.Shaped silk is aligned, is then carried out 450 DEG C, 6h ageing treatment.The alloy shaped silk material produced using the above method, tensile strength 1220MPa, yield strength are 1105MPa, thermal coefficient are 120W/ (m DEG C), and conductivity 25%IACS, crystallite dimension is 5.6 μm, hardness 360HV, Perpendicular to rolling to 90-degree bent flawless.
Embodiment 3:
Alloy specific chemical composition mass percent are as follows: alloy specific chemical composition (wt%) are as follows: C:0.008%, Ti: 3.2%, W:0.02%, Ta:0.03%, Fe:0.18%, remaining Cu and inevitable impurity.
Titanium sponge that cathode copper that purity is 99.9%, purity are 99.9%, C, Ta, Fe, W and Ce are filled after mixing in proportion Enter crucible.It is smelted in vaccum sensitive stove, alloy refining temperature is 1250 DEG C, and tapping temperature is 1200 DEG C, is cast into steel Ingot.Steel ingot is swaged into 50 × 50mm thickness square billet in 840 DEG C of heat preservations, in 900 DEG C of heat preservation hot rollings, is cold rolled to Φ 10mm wire rod, hot rolling becomes Shape amount is 97%.Wire rod is dissolved after hot rolling, and 850 DEG C of solid solubility temperature, soaking time 1.5h carries out cold-drawn, cold-drawn after solid solution To Φ 8mm, drawing deformation amount is 36%, is then dissolved at 850 DEG C, soaking time 3min.It is carried out again after annealing cold It pulls out, is cold drawing to Φ 5.66mm, deflection 50% is then dissolved at 850 DEG C, then soaking time 2min is cold drawing to Φ 40mm, deflection 50% are then dissolved at 850 DEG C, soaking time 2min.State circle silk will be dissolved through pass rolling It is made as the rectangle silk of 2.3mm × 4.6mm, cold rolling reduction 16%, after 850 DEG C of heat preservation 2min, through hole type roll rolling for such as Shaped silk shown in Fig. 3, cold rolling reduction 28%.Shaped silk is aligned, then carries out 480 DEG C, 5h ageing treatment.It adopts The alloy shaped silk material produced in aforementioned manners, tensile strength 1180MPa, yield strength 1075MPa, thermal coefficient are 110W/ (m DEG C), conductivity 23%IACS, crystallite dimension be 20 μm, hardness 340HV, perpendicular to roll to 90-degree bent without Crackle.

Claims (3)

1. a kind of high-strength CTB alloy shaped silk for being applicable in electrically conductive elastic component, which is characterized in that chemical component quality percentage Than are as follows: C 0~0.01%, Ti 2.6~3.4%, Ce 0.001~0.2%, W+Ta+Fe+Hf≤0.3%, surplus is for Cu and not Evitable impurity.
2. the CTB alloy shaped silk according to claim, which is characterized in that tensile strength is 1130~1230MPa, is bent Taking intensity is 1028~1100MPa, and thermal coefficient is 92~125W/ (m DEG C), and conductivity is 19~27%IACS, crystal grain ruler Very little is 5.6~44.9 μm, and hardness is 320~370HV, perpendicular to rolling to 90-degree bent flawless.
3. a kind of preparation method of CTB alloy shaped silk as claimed in claim 1 or 2, which is characterized in that processing step and control Technical parameter it is as follows:
(1) vacuum metling: crucible is packed into after relevant raw materials mixing;Alloy refining temperature is 1200~1250 DEG C, tapping temperature It is 1160~1200 DEG C;
(2) square billet of (30 × 30)~(110 × 110) mm forging, hot rolling: is forged at 700~920 DEG C;Square billet after forging Hot rolling is carried out at 700~920 DEG C, obtains wire rod, and hot rolling total deformation is 90~99%, wire rod diameter 7~Φ of Φ 10mm;It will Wire rod is dissolved at 700~850 DEG C, and soaking time is 0.5~2h;
(3) wire rod cold-drawn, solid solution: is subjected to multiple cold-drawn, solid solution to appropriate size;Wherein the control of drawing deformation amount 30~ 80%;Alloy wire between cold-drawn passage carries out solution treatment in protective atmosphere, and solid solubility temperature is 700~850 DEG C;When heat preservation Between be 0.5min~10min;
(4) cold rolling shaped silk: the solid solution state silk material that (3) are obtained passes through corresponding hole type roll, alternately by solid solution, cold rolling It is machined to trimmed size (cold rolling state) shaped silk;Shaped silk cold rolling reduction is 10~40%;Solid solubility temperature is 700~850 DEG C; Soaking time is 0.5min~10min;
(5) align: the shaped silk obtained to step (4) is aligned;
(6) timeliness: the shaped silk obtained to step (5) carries out timeliness, and aging temp is 350~500 DEG C, aging time be 1h~ 24h;
(7) it polishes: shaped silk surface is processed by shot blasting.
CN201811428396.4A 2018-11-27 2018-11-27 High-strength titanium-copper alloy special-shaped wire suitable for conductive elastic component and preparation method thereof Active CN109504865B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112877553A (en) * 2021-01-12 2021-06-01 宁波金田铜业(集团)股份有限公司 Preparation method of copper-titanium alloy bar wire
CN113278844A (en) * 2021-05-18 2021-08-20 国工恒昌新材料沧州有限公司 High-strength high-elasticity copper-titanium alloy and manufacturing method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0623686B1 (en) * 1993-05-04 1998-01-28 Wieland-Werke Ag Application of a copper-titanium-X alloy for spectacle frames
CN1384216A (en) * 2001-02-20 2002-12-11 日矿金属株式会社 High-strength TiCu alloy, its making process and connector with the alloy
CN101144128A (en) * 2007-10-12 2008-03-19 苏州有色金属研究院有限公司 Rare earth titanium-copper alloy and manufacture method thereof
CN102513399A (en) * 2011-12-31 2012-06-27 北京北冶功能材料有限公司 Method for processing special wires for linear bearings

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0623686B1 (en) * 1993-05-04 1998-01-28 Wieland-Werke Ag Application of a copper-titanium-X alloy for spectacle frames
CN1384216A (en) * 2001-02-20 2002-12-11 日矿金属株式会社 High-strength TiCu alloy, its making process and connector with the alloy
CN101144128A (en) * 2007-10-12 2008-03-19 苏州有色金属研究院有限公司 Rare earth titanium-copper alloy and manufacture method thereof
CN102513399A (en) * 2011-12-31 2012-06-27 北京北冶功能材料有限公司 Method for processing special wires for linear bearings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112877553A (en) * 2021-01-12 2021-06-01 宁波金田铜业(集团)股份有限公司 Preparation method of copper-titanium alloy bar wire
CN113278844A (en) * 2021-05-18 2021-08-20 国工恒昌新材料沧州有限公司 High-strength high-elasticity copper-titanium alloy and manufacturing method thereof

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