CN108690921A - A kind of high-performance phosphorus bronze band and preparation method thereof - Google Patents
A kind of high-performance phosphorus bronze band and preparation method thereof Download PDFInfo
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- CN108690921A CN108690921A CN201810689150.6A CN201810689150A CN108690921A CN 108690921 A CN108690921 A CN 108690921A CN 201810689150 A CN201810689150 A CN 201810689150A CN 108690921 A CN108690921 A CN 108690921A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/004—Copper alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
- B22D11/143—Plants for continuous casting for horizontal casting
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/02—Alloys based on copper with tin as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Abstract
The present invention relates to a kind of high-performance phosphorus bronze bands, it contains the chemical composition of following weight percent:Sn10.0~13.0%, Zn 0.1~0.65%, Ni 0.05~0.5%, Fe 0.1~0.5%, P 0.01~0.5%, RE 0.001-0.02%, B 0.005~0.05%, remaining is Cu.A kind of process being used to prepare high-performance phosphorus bronze band, includes following steps:A. it carries out dispensing according to mass percent, feed intake, melting and casting, the pre- breaking down of b., c. homogenizing annealings, the milling faces d., e. roughing, f. intermediate annealing, g. pickling are rolled in h., i. continuous annealings, j. finish rolling, k. pickling, m. stretch-bending straightenings, n. process annealings, o. sub-cuts, p. packaging and storages.
Description
Technical field
The present invention relates to technical field of nonferrous metal processing, more particularly to one kind in high-end elastic element and electronics member device
The widely used high tin-phosphor bronze band in part field and short flow process.
Background technology
Tin-phosphor bronze has high elasticity, wearability, diamagnetism, good cold and hot working performance, welding and soldering property, especially
It has good corrosion resistance in air and fresh water, can be used for making spring contact plate, wear part and magneto-resistive element
Equal parts, are widely applied and the fields such as radio, electronics, automobile, communication industry.
Electronics, communication and automobile industry are in the high speed development stage, increase severely to the demand of tin-phosphor bronze band, same with this
When elasticity component develop towards micro-, thin, high-elastic, complicated bending and molding, wear-resistant, corrosion-resistant and proof stress relaxation direction,
Especially tensile strength is more than 1000MPa;Require material that there is certain electric conductivity and stress relaxation resistance simultaneously.Cause
This, the development trend of copper based elastic material is the alloy of high strength and high flexibility low stress relaxation property.And existing phosphor bronze alloy is general
Store-through is relatively low in conductivity, only 12-16%IACS, and intensity is about 600-800MPa, it is difficult to meet intelligent vehicle, household etc.
The use demand of material, and when intensity is improved to 1000MPa or more, plasticity and toughness are poor, cannot be satisfied punch forming performance,
To influence the function of elastic material.Traditional phosphor bronze alloy has excellent elastic and good stress relaxation-resistant special
Property, and in occupation of the half of the country of elastic material, therefore, how to be carried out at alloying component modification on the basis of phosphor bronze alloy
Reason obtains tensile strength and is more than 1000MPa, and the high Sn-P-Cu alloy material of high-performance of excellent combination property meets elasticity member
The use demand of device material and its industrialization production of realization, have great importance.
Invention content
In view of the deficienciess of the prior art, the present invention is directed to make up existing phosphor bronze alloy intensity deficiency, bending and molding
The disadvantages such as poor performance add the trace elements such as a small amount of iron, nickel, zinc, to microscopic structure on the basis of traditional phosphor bronze alloy
Structure is improved, and optimizes the preparation process and method of phosphor bronze, is significantly improved the degree of segregation of tin element, is improved alloy
Comprehensive performance, be desirably to obtain a kind of high strength and high flexibility, bending and molding performance and stress relaxation-resistant excellent complicated Cu-Sn-Fe-
Ni-Zn-P alloys.
To achieve the above object, the present invention provides the following technical solutions:
A kind of high-performance phosphorus bronze band, it contains the chemical composition of following weight percent:Sn10.0~13.0%, Zn 0.1~
0.65%, Ni 0.05~0.5%, Fe 0.1~0.5%, P 0.01~0.5%, RE 0.001-0.02%, B 0.005~0.05%,
Remaining is Cu.
As an improvement of the present invention, it contains the chemical composition of following weight percent, Sn10.5~11.5%, Zn 0.1
~0.35%, Ni 0.1~0.2%, Fe 0.1~0.2%, P 0.01~0.05%, RE 0.005-0.01%, B 0.015~
0.03%, remaining is Cu.
Added alloys producing:
Nickel:Corronil is infinitely dissolved, and nickel element has the double effects of crystal grain thinning and solution strengthening, is conducive to improve alloy
Mechanical property.The hot mastication point of phosphor bronze alloy is improved simultaneously.
Tin:Since tin atom differs larger with copper atom radius, tin element is added in copper alloy, can cause larger crystalline substance
Lattice distort, and the effective movement for hindering dislocation improves the intensity and elastic property of alloy.In addition, the addition of tin element can be significantly
Improve the corrosion resistance of alloy.
Phosphorus:Micro P elements can not only play phlogistication, can also form phosphate copper compound with copper, improve alloy
Anti-softening temperature and stress relaxation resistance, but since P elements can deteriorate the conductive characteristic of alloy, need to strictly control
The content of P elements in alloy;
Zinc:High-strength elastic component is to increase its service life and welding performance, and surface is often needed to carry out tin plating processing, and micro
Zn-ef ficiency addition, be remarkably improved moistened surface angle and the affinity of alloy, dramatically increase the reliability of coating and steady afterwards
It is qualitative.
Iron:Ferro element can effectively adjust alloy grain tissue size, improve the uniformity of tissue, improve the resistance to of alloy and answer
It is added while power corrosion susceptibility, especially iron, nickel alloy element, the temperature range of solidus line can be reduced significantly, improve tin
The segregation situation of element obtains the good strand of metallurgical quality, and the crystal grain of notable refining alloy, passes through crystal grain thinning and improvement
Tin is segregated, and can get the excellent phosphor bronze alloy of conductivity.
Boron:During alloy melting, adding suitable boron has degasification and deoxidation, improves melting billet quality.
Meanwhile boron can promote Sn elements to keep half coherence crystal face with matrix as forming core particle, hinder dislocation extension.But
Solubility of the boron in copper is extremely low, and excessive boron is easy to assemble in crystal boundary, generates processing brittleness.
RE:Rare earth alloy element is main to play purification melt in Sn-P-Cu alloy, improves the consistency and stream of melt
Dynamic property is conducive to the open texture defect for eliminating casting, improves the quality of melt.
Iron, nickel and rare earth element:The addition of three kinds of elements can primarily serve crystal grain thinning size, reduce tin and be segregated journey
The effect of degree.When three kinds of elements are jointly added in alloy, since there are interation between nutrients between three kinds of elements, energy is obviously
Crystal grain thinning and improvement tin segregation, effect are better than two kinds of alloying elements of addition, can get the excellent high tin phosphorus of comprehensive quality
Bell metal.
A kind of process being used to prepare high-performance phosphorus bronze band, includes following steps:A. according to mass percent
It carries out dispensing, feed intake, melting and casting, the pre- breaking down of b., c. homogenizing annealings, the milling faces d., e. roughing, f. intermediate annealings, g. acid
It washes, is rolled in h., i. continuous annealings, j. finish rolling, k. pickling, m. stretch-bending straightenings, n. process annealings, o. sub-cuts, p. packaging and storages.
As an improvement of the present invention, copper is first added(Cu), nickel(Ni), iron(Fe), tin is added after fusing at low temperature again
(Sn), zinc ingot metal(Zn), wait for that all melting low temperature is added copper phosphorus(Cu-P), rare earth(RE)Alloy and ni-b alloy(NiB)(In melting
Intermediate alloy is added after Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and realize the stable homogeneous of ingredient), at differentiation
After testing qualification and clearing up clinker, covered using the charcoal after baking;It is melted under non-vacuum environment using power frequency induction furnace
The temperature of casting, the casting is controlled at 1190~1210 DEG C, chemically examines qualification using horizontal casting mode cast component and to clinker
After cleaning, covered using the charcoal after baking;Founding, the temperature of the casting are carried out under non-vacuum environment using power frequency induction furnace
Degree control is cast at 1190~1210 DEG C using horizontal casting mode.
As a further improvement on the present invention, horizontal casting casting technique requires control as follows:Use be pulled length for
10.0 ~ 12.0mm, be between being pulled 0.6 ~ 0.9s, in stop 2.5 ~ 3.2s, return and push away length and be 1.0 ~ 2.0mm, return that push away the time be 0.2
~ 0.4s, casting speed are 120 ~ 170mm/min, 250 ~ 400 DEG C of made-up belt outlet temperature;Tin phosphorus bronze band rolls up base:Thickness 13.5 ~
15.5mm, wide 430 ~ 650mm, long 70-150m.Above-mentioned horizontal casting, crystallizer is using steel bushing, copper sheathing and graphite flake assembling
The crystallizer of interior logical cooling water.Certain thickness graphite paper is added in graphite flake and copper sheathing joint place, reduces the cold of crystallizer internal cavity
But intensity reduces solid-liquid phase line section when solidification, improves the segregation situation of tin afterwards.
As a preference of the present invention, in stepb, pre- breaking down, deflection 30- are carried out by the way of arc control
35%, in step c, the annealing temperature is 610-630 DEG C, and the soaking time is 8-10h.
As present invention further optimization, in step i, using ultra-fine grain control technology, the tensile strength
Control is 500-560MPa.When 90 degree of bendings, R/T zero, bending is not cracked.
As the specific technical solution of the present invention, in step j, the finish rolling working modulus is 30~50%.
As an improvement of the present invention, in step m, the stretch-bending straightening uses elongation control pattern, and given prolongs
It is 2.5-4.5% to stretch rate;In step n, the temperature of process annealing is 400 DEG C, speed 35-45m/min.It is strong+low using stretch bending
The method of both warm tension Annealings combinatorial regulation;On the one hand the residual stress of band is eliminated, is on the other hand the bullet for improving material
Property limiting value.
Compared with the prior art, the advantages of the present invention are as follows:Compared with traditional phosphor bronze alloy, Cu-Sn- of the invention
Fe- Ni-Zn-P alloys have high intensity, the characteristic that bending and molding performance is excellent, stress relaxation-resistant characteristic is excellent, and with good
Cold working characteristic.(1)Currently preferred alloying component be Sn10.5~11.5%, Zn 0.1~0.35%, Ni 0.1~
0.2%, Fe 0.1~0.2%, P 0.01~0.05%, RE 0.005-0.01%, B 0.015~0.03%, remaining is Cu, in alloy
Fe, Ni alloying element of micro addition can be reduced significantly the effect of the temperature range and combination crystal grain thinning tissue of solid-liquid phase line,
The segregation situation for significantly improving tin, improves the metallurgical quality of ingot casting;RE, B alloying element being separately added improve the flowing of melt
Characteristic and crystal grain thinning, reduce the segregation situation of tin;
(2)By the processing technology of microalloy treatment and optimum level continuous casting, pre- breaking down processing is directly carried out, made-up belt can be not necessarily to
Homogenization Treatments (made-up belt homogenizing annealing process temperature be 670 ~ 710 DEG C, generally want 16 ~ 20 hours soaking times, need to disappear
Consumption is a large amount of artificial, liquefied ammonia and liquid nitrogen), the microalloy of use and temperature gradient combination treatment technology in process of setting is reduced, suppression
The segregation and crystal grain thinning of tin element processed inhibit the forming core of eutectic brittle phase, can reduce manufacturing cost afterwards, realize short stream
It is prepared by journey.
(3)Using the control process technology of ultra-fine grain and cold plastic deformation, it is remarkably improved the comprehensive of band
Can, especially complicated bending and molding and elongation percentage obtain the high strength and high flexibility elastic material with comprehensive performance;
(4)+ combination the adjusting process of low temperature tension Annealing is rectified using stretch bending, plate shape on the one hand can be significantly improved and reduce remnants and answer
Power, on the other hand increases elastic limit value, and the raising of elastic limit value can meet the parts material with high elastic limit material
Expect use demand, significantly improves it afterwards and plug number and endurance service life;At the same time, it is moved back with traditional low temperature tension
The technology controlling and process of fire+stretch-bending straightening is remarkably improved its stress relaxation-resistant characteristic, improves its service life afterwards.
Using alloy formula provided by the present invention and prepare processing method, obtained novel C u-Sn-Fe- Ni-Zn-P
Strength of alloy σ b may be up to 1050MPa, elongation after fracture >=3%, and minimum 90 degree of bending R/T ratios are 1.5(Ensure bending
It does not crack), elastic limit can reach 820MPa, and the stress relaxation-resistant rate 81-86% of 100h, can meet complexity and be bent at room temperature
The use demand of the elastic parts material of type.
Specific implementation mode
The preparation of heretofore described high-performance phosphorus bronze band and processing technology are:A. matched according to mass percent
Expect, feed intake, melting and casting, the pre- breaking down of b., c. homogenizing annealings, the milling faces d., e. roughing, f. intermediate annealings, g. pickling, in h.
It rolls, i. continuous annealings, j. finish rolling, k. pickling, m. stretch-bending straightenings, n. process annealings, o. sub-cuts, p packaging and storages.
The alloy of the present invention uses following raw material melting:Cathode copper, ingot piece, iron plate, pure tin, zinc ingot metal, copper-phosphorus alloy, rare earth
Elements RE, ni-b alloy.
Embodiment 1
The ingredient of alloy is shown in Table 1 embodiment 1.
In step a, the particular order to feed intake is:Copper is first added(Cu), nickel(Ni), iron(Fe), again low after fusing
Temperature is lower to be added tin(Sn), zinc ingot metal(Zn), wait for that all melting low temperature is added copper phosphorus(Cu-P), rare earth(RE)Alloy and ni-b alloy
(NiB)(It is added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and realize the stable homogeneous of ingredient), at
After differentiation is tested qualification and cleared up clinker, covered using the charcoal after baking;Using power frequency induction furnace under non-vacuum environment into
The temperature of row founding, the casting is controlled at 1195 DEG C, is cast using horizontal casting mode.
Wherein horizontal casting casting technique requires control as follows:Use the length that is pulled for 10.5mm, be pulled between be 0.8s,
In stop 2.5s, return and push away length and be 1.2mm, return that move back the time be 0.2s, casting speed 156.0mm/min, made-up belt outlet temperature 280
DEG C, the crystallization line on made-up belt surface answers straight, the visible casting flaw such as answer flawless, notch, pit, cold shut;Tin phosphorus bronze band is rolled up
Base:Thick 14.5mm, width 650mm, long 120m.
In step b, the high-tin bronze strand after volume base is subjected to pre- breaking down processing, is carried out by the way of arc control pre-
Breaking down, deflection 35%.
In step c, the volume base after pre- breaking down is subjected to homogenizing annealing, annealing temperature is 630 DEG C, soaking time 9h,
The surface layer for further improving tin is segregated situation.
In step d, the volume base after homogenizing annealing is subjected to milling surface treatment, online or offline milling face is gone per facing cut
0.6mm mainly removes surface scale and eliminates surface layer segregation layer;
In step i, continuous annealing treatment is carried out in air-cushion type annealing furnace, high Sn-P-Cu alloy controls skill using ultra-fine grain
Art, tensile strength are controlled in 530MPa, 90 degree of bendings, and R/T zero, bending is not cracked;
In step j, the band after continuous annealing treatment is subjected to finish rolling, deflection 40%;
In step m, the band of pickling processes is subjected to stretch-bending straightening, using elongation control pattern, given elongation percentage is
2.5%, it is on the one hand the plate shape for aligning band, on the other hand contributes to the elastic limit for promoting material;
In step n, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 400
DEG C, on the one hand speed 35m/min eliminates the residual stress of band, be on the other hand the comprehensive performance for improving material, especially
The elongation percentage performance of material;
By the above melting, pre- breaking down, homogenizing annealing, milling face, roughing, continuous annealing, finish rolling, stretch bending are rectified, low temperature tension moves back
After the working processes such as fire, performance is shown in Table the embodiment 1 in 2.
Embodiment 2
The ingredient of alloy is shown in Table 1 embodiment 2.
In step a, the particular order to feed intake is:Copper is first added(Cu), nickel(Ni), iron(Fe), again low after fusing
Temperature is lower to be added tin(Sn), zinc ingot metal(Zn), wait for that all melting low temperature is added copper phosphorus(Cu-P), rare earth(RE)Alloy and ni-b alloy
(NiB)(It is added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and realize the stable homogeneous of ingredient), at
After differentiation is tested qualification and cleared up clinker, covered using the charcoal after baking;Using power frequency induction furnace under non-vacuum environment into
The temperature of row founding, the casting is controlled at 1210 DEG C, is cast using horizontal casting mode.
Wherein horizontal casting casting technique requires control as follows:Use the length that is pulled for 11.0mm, be pulled between be 0.6s,
In stop 3.0s, return and push away length and be 1.0mm, return that move back the time be 0.4s, casting speed 145mm/min, 350 DEG C of made-up belt outlet temperature,
The crystallization line on made-up belt surface answers straight, the visible casting flaw such as answer flawless, notch, pit, cold shut;Tin phosphorus bronze band rolls up base:
Thick 15.5mm, width 650mm, long 150m.
In step b, the high-tin bronze strand after volume base is subjected to pre- breaking down processing, is carried out by the way of arc control pre-
Breaking down, deflection 35%;
In step c, the volume base after pre- breaking down is subjected to homogenizing annealing, annealing temperature is 610 DEG C, soaking time 10h, into one
The surface layer that step improves tin is segregated situation;
In step d, the volume base after homogenizing annealing is subjected to milling surface treatment, 0.65mm is removed in online or offline milling face per facing cut, main
If removing surface scale and eliminating surface layer and be segregated layer;
In step i, continuous annealing treatment is carried out in air-cushion type annealing furnace, high Sn-P-Cu alloy controls skill using ultra-fine grain
Art, tensile strength are controlled in 500MPa, 90 degree of bendings, and R/T zero, bending is not cracked;
In step j, the band after continuous annealing treatment is subjected to finish rolling, deflection 50%;
In step m, the band of pickling processes is subjected to stretch-bending straightening, using elongation control pattern, given elongation percentage is
3.0%, it is on the one hand the plate shape for aligning band, on the other hand contributes to the elastic limit for promoting material;
In step n, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 400
DEG C, on the one hand speed 40m/min eliminates the residual stress of band, be on the other hand the comprehensive performance for improving material, especially
The elongation percentage performance of material;
By the above melting, pre- breaking down, homogenizing annealing, milling face, roughing, continuous annealing, finish rolling, stretch bending are rectified, low temperature tension moves back
After the working processes such as fire, performance is shown in Table the embodiment 2 in 2.
Embodiment 3
The ingredient of alloy is shown in Table 1 embodiment 3.
In step a, the particular order to feed intake is:Copper is first added(Cu), nickel(Ni), iron(Fe), again low after fusing
Temperature is lower to be added tin(Sn), zinc ingot metal(Zn), wait for that all melting low temperature is added copper phosphorus(Cu-P), rare earth(RE)Alloy and ni-b alloy
(NiB)(It is added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and realize the stable homogeneous of ingredient), at
After differentiation is tested qualification and cleared up clinker, covered using the charcoal after baking;Using power frequency induction furnace under non-vacuum environment into
The temperature of row founding, the casting is controlled at 1205 DEG C, is cast using horizontal casting mode.
Wherein horizontal casting casting technique requires control as follows:Use the length that is pulled for 12.0mm, be pulled between be 0.9s,
In stop 3.2s, return and push away length and be 2.0mm, return that move back the time be 0.4s, casting speed 170mm/min, 330 DEG C of made-up belt outlet temperature,
The crystallization line on made-up belt surface answers straight, the visible casting flaw such as answer flawless, notch, pit, cold shut;Tin phosphorus bronze band rolls up base:
Thick 13.5mm, width 430mm, long 90m.
In step b, the high-tin bronze strand after volume base is subjected to pre- breaking down processing, is carried out by the way of arc control pre-
Breaking down, deflection 30%.
In step c, the volume base after pre- breaking down is subjected to homogenizing annealing, annealing temperature is 610 DEG C, soaking time 8h,
The surface layer for further improving tin is segregated situation.
In step d, the volume base after homogenizing annealing is subjected to milling surface treatment, online or offline milling face is gone per facing cut
0.6mm mainly removes surface scale and eliminates surface layer segregation layer;
In step i, continuous annealing treatment is carried out in air-cushion type annealing furnace, high Sn-P-Cu alloy controls skill using ultra-fine grain
Art, tensile strength are controlled in 560MPa, 90 degree of bendings, and R/T zero, bending is not cracked;
In step j, the band after continuous annealing treatment is subjected to finish rolling, deflection 45%;
In step m, the band of pickling processes is subjected to stretch-bending straightening, using elongation control pattern, given elongation percentage is
3.5%, it is on the one hand the plate shape for aligning band, on the other hand contributes to the elastic limit for promoting material;
In step n, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 400
DEG C, on the one hand speed 45m/min eliminates the residual stress of band, be on the other hand the comprehensive performance for improving material, especially
The elongation percentage performance of material;
By the above melting, pre- breaking down, homogenizing annealing, milling face, roughing, continuous annealing, finish rolling, stretch bending are rectified, low temperature tension moves back
After the working processes such as fire, performance is shown in Table the embodiment 3 in 2.
Embodiment 4
The ingredient of alloy is shown in Table 1 embodiment 4.
In step a, the particular order to feed intake is:Copper is first added(Cu), nickel(Ni), iron(Fe), again low after fusing
Temperature is lower to be added tin(Sn), zinc ingot metal(Zn), wait for that all melting low temperature is added copper phosphorus(Cu-P), rare earth(RE)Alloy and ni-b alloy
(NiB)(It is added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and realize the stable homogeneous of ingredient), at
After differentiation is tested qualification and cleared up clinker, covered using the charcoal after baking;Using power frequency induction furnace under non-vacuum environment into
The temperature of row founding, the casting is controlled at 1190 DEG C, is cast using horizontal casting mode.
Wherein horizontal casting casting technique requires control as follows:Use the length that is pulled for 10.0mm, be pulled between be 0.9s,
In stop 3.0s, return and push away length and be 1.8mm, return that move back the time be 0.3s, casting speed 120mm/min, 280 DEG C of made-up belt outlet temperature,
The crystallization line on made-up belt surface answers straight, the visible casting flaw such as answer flawless, notch, pit, cold shut;Tin phosphorus bronze band rolls up base:
Thick 13.5mm, width 430mm, long 70m.
In step b, the high-tin bronze strand after volume base is subjected to pre- breaking down processing, is carried out by the way of arc control pre-
Breaking down, deflection 35%.
In step c, the volume base after pre- breaking down is subjected to homogenizing annealing, annealing temperature is 630 DEG C, soaking time 8h,
The surface layer for further improving tin is segregated situation.
In step d, the volume base after homogenizing annealing is subjected to milling surface treatment, online or offline milling face is gone per facing cut
0.7mm mainly removes surface scale and eliminates surface layer segregation layer;
In step i, continuous annealing treatment is carried out in air-cushion type annealing furnace, high Sn-P-Cu alloy controls skill using ultra-fine grain
Art, tensile strength are controlled in 550MPa, 90 degree of bendings, and R/T zero, bending is not cracked;
In step j, the band after continuous annealing treatment is subjected to finish rolling, deflection 30%;
In step m, the band of pickling processes is subjected to stretch-bending straightening, using elongation control pattern, given elongation percentage is
4.2%, it is on the one hand the plate shape for aligning band, on the other hand contributes to the elastic limit for promoting material;
In step n, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 400
DEG C, on the one hand speed 38m/min eliminates the residual stress of band, be on the other hand the comprehensive performance for improving material, especially
The elongation percentage performance of material;
By the above melting, pre- breaking down, homogenizing annealing, milling face, roughing, continuous annealing, finish rolling, stretch bending are rectified, low temperature tension moves back
After the working processes such as fire, performance is shown in Table the embodiment 4 in 2.
Embodiment 5
The ingredient of alloy is shown in Table 1 embodiment 5.
In step a, the particular order to feed intake is:Copper is first added(Cu), nickel(Ni), iron(Fe), again low after fusing
Temperature is lower to be added tin(Sn), zinc ingot metal(Zn), wait for that all melting low temperature is added copper phosphorus(Cu-P), rare earth(RE)Alloy and ni-b alloy
(NiB)(It is added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and realize the stable homogeneous of ingredient), at
After differentiation is tested qualification and cleared up clinker, covered using the charcoal after baking;Using power frequency induction furnace under non-vacuum environment into
The temperature of row founding, the casting is controlled at 1192 DEG C, is cast using horizontal casting mode.
Wherein horizontal casting casting technique requires control as follows:Use the length that is pulled for 11.2mm, be pulled between be 0.8s,
In stop 2.6s, return and push away length and be 1.2mm, return that move back the time be 0.3s, casting speed 162mm/min, 400 DEG C of made-up belt outlet temperature,
The crystallization line on made-up belt surface answers straight, the visible casting flaw such as answer flawless, notch, pit, cold shut;Tin phosphorus bronze band rolls up base:
Thick 15.5mm, width 650mm, long 150m.
In step b, the high-tin bronze strand after volume base is subjected to pre- breaking down processing, is carried out by the way of arc control pre-
Breaking down, deflection 35%.
In step c, the volume base after pre- breaking down is subjected to homogenizing annealing, annealing temperature is 630 DEG C, soaking time 10h,
The surface layer for further improving tin is segregated situation.
In step d, the volume base after homogenizing annealing is subjected to milling surface treatment, online or offline milling face is gone per facing cut
0.8mm mainly removes surface scale and eliminates surface layer segregation layer;
In step i, continuous annealing treatment is carried out in air-cushion type annealing furnace, high Sn-P-Cu alloy controls skill using ultra-fine grain
Art, tensile strength are controlled in 500MPa, 90 degree of bendings, and R/T zero, bending is not cracked;
In step j, the band after continuous annealing treatment is subjected to finish rolling, deflection 30%;
In step m, the band of pickling processes is subjected to stretch-bending straightening, using elongation control pattern, given elongation percentage is
4.5%, it is on the one hand the plate shape for aligning band, on the other hand contributes to the elastic limit for promoting material;
In step n, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 400
DEG C, on the one hand speed 35m/min eliminates the residual stress of band, be on the other hand the comprehensive performance for improving material, especially
The elongation percentage performance of material;
By the above melting, pre- breaking down, homogenizing annealing, milling face, roughing, continuous annealing, finish rolling, stretch bending are rectified, low temperature tension moves back
After the working processes such as fire, performance is shown in Table the embodiment 5 in 2.
Embodiment 6
The ingredient of alloy is shown in Table 1 embodiment 6.
In step a, the particular order to feed intake is:Copper is first added(Cu), nickel(Ni), iron(Fe), again low after fusing
Temperature is lower to be added tin(Sn), zinc ingot metal(Zn), wait for that all melting low temperature is added copper phosphorus(Cu-P), rare earth(RE)Alloy and ni-b alloy
(NiB)(It is added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and realize the stable homogeneous of ingredient), at
After differentiation is tested qualification and cleared up clinker, covered using the charcoal after baking;Using power frequency induction furnace under non-vacuum environment into
The temperature of row founding, the casting is controlled at 1206 DEG C, is cast using horizontal casting mode.
Wherein horizontal casting casting technique requires control as follows:Use the length that is pulled for 11.8mm, be pulled between be 0.8s,
In stop 2.8s, return and push away length and be 1.5mm, return that move back the time be 0.3s, casting speed 158mm/min, 360 DEG C of made-up belt outlet temperature,
The crystallization line on made-up belt surface answers straight, the visible casting flaw such as answer flawless, notch, pit, cold shut;Tin phosphorus bronze band rolls up base:
Thick 14.5mm, width 430mm, long 80m.
In step b, the high-tin bronze strand after volume base is subjected to pre- breaking down processing, is carried out by the way of arc control pre-
Breaking down, deflection 35%.
In step c, the volume base after pre- breaking down is subjected to homogenizing annealing, annealing temperature is 620 DEG C, soaking time 9h,
The surface layer for further improving tin is segregated situation.
In step d, the volume base after homogenizing annealing is subjected to milling surface treatment, online or offline milling face is gone per facing cut
0.7mm mainly removes surface scale and eliminates surface layer segregation layer;
In step i, continuous annealing treatment is carried out in air-cushion type annealing furnace, high Sn-P-Cu alloy controls skill using ultra-fine grain
Art, tensile strength are controlled in 530MPa, 90 degree of bendings, and R/T zero, bending is not cracked;
In step j, the band after continuous annealing treatment is subjected to finish rolling, deflection 35%;
In step m, the band of pickling processes is subjected to stretch-bending straightening, using elongation control pattern, given elongation percentage is
3.8%, it is on the one hand the plate shape for aligning band, on the other hand contributes to the elastic limit for promoting material;
In step n, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 400
DEG C, on the one hand speed 38m/min eliminates the residual stress of band, be on the other hand the comprehensive performance for improving material, especially
The elongation percentage performance of material;
By the above melting, pre- breaking down, homogenizing annealing, milling face, roughing, continuous annealing, finish rolling, stretch bending are rectified, low temperature tension moves back
After the working processes such as fire, performance is shown in Table the embodiment 6 in 2.
Embodiment 7
The ingredient of alloy is shown in Table 1 embodiment 7.
In step a, the particular order to feed intake is:Copper is first added(Cu), nickel(Ni), iron(Fe), again low after fusing
Temperature is lower to be added tin(Sn), zinc ingot metal(Zn), wait for that all melting low temperature is added copper phosphorus(Cu-P), rare earth(RE)Alloy and ni-b alloy
(NiB)(It is added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and realize the stable homogeneous of ingredient), at
After differentiation is tested qualification and cleared up clinker, covered using the charcoal after baking;Using power frequency induction furnace under non-vacuum environment into
The temperature of row founding, the casting is controlled at 1210 DEG C, is cast using horizontal casting mode.
Wherein horizontal casting casting technique requires control as follows:Use the length that is pulled for 10.0mm, be pulled between be 0.7s,
In stop 2.9s, return and push away length and be 2mm, return that move back the time be 0.2s, casting speed 125mm/min, 250 DEG C of made-up belt outlet temperature, band
The crystallization line on base surface answers straight, the visible casting flaw such as answer flawless, notch, pit, cold shut;Tin phosphorus bronze band rolls up base:It is thick
13.5mm, width 430mm, long 80m.
In step b, the high-tin bronze strand after volume base is subjected to pre- breaking down processing, is carried out by the way of arc control pre-
Breaking down, deflection 35%.
In step c, the volume base after pre- breaking down is subjected to homogenizing annealing, annealing temperature is 615 DEG C, soaking time 8h,
The surface layer for further improving tin is segregated situation.
In step d, the volume base after homogenizing annealing is subjected to milling surface treatment, online or offline milling face is gone per facing cut
0.5mm mainly removes surface scale and eliminates surface layer segregation layer;
In step i, continuous annealing treatment is carried out in air-cushion type annealing furnace, high Sn-P-Cu alloy controls skill using ultra-fine grain
Art, tensile strength are controlled in 500MPa, 90 degree of bendings, and R/T zero, bending is not cracked;
In step j, the band after continuous annealing treatment is subjected to finish rolling, deflection 30%;
In step m, the band of pickling processes is subjected to stretch-bending straightening, using elongation control pattern, given elongation percentage is
2.5%, it is on the one hand the plate shape for aligning band, on the other hand contributes to the elastic limit for promoting material;
In step n, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 400
DEG C, on the one hand speed 45m/min eliminates the residual stress of band, be on the other hand the comprehensive performance for improving material, especially
The elongation percentage performance of material;
By the above melting, pre- breaking down, homogenizing annealing, milling face, roughing, continuous annealing, finish rolling, stretch bending are rectified, low temperature tension moves back
After the working processes such as fire, performance is shown in Table the embodiment 7 in 2.
Embodiment 8
The ingredient of alloy is shown in Table 1 embodiment 8.
In step a, the particular order to feed intake is:Copper is first added(Cu), nickel(Ni), iron(Fe), again low after fusing
Temperature is lower to be added tin(Sn), zinc ingot metal(Zn), wait for that all melting low temperature is added copper phosphorus(Cu-P), rare earth(RE)Alloy and ni-b alloy
(NiB)(It is added after melting Zn-ef ficiency, main purpose is to reduce oxidization burning loss situation, and realize the stable homogeneous of ingredient), at
After differentiation is tested qualification and cleared up clinker, covered using the charcoal after baking;Using power frequency induction furnace under non-vacuum environment into
The temperature of row founding, the casting is controlled at 1198 DEG C, is cast using horizontal casting mode.
Wherein horizontal casting casting technique requires control as follows:Use the length that is pulled for 10.8mm, be pulled between be 0.7s,
In stop 3.0s, return and push away length and be 1.2mm, return that move back the time be 0.2s, casting speed 148mm/min, 310 DEG C of made-up belt outlet temperature,
The crystallization line on made-up belt surface answers straight, the visible casting flaw such as answer flawless, notch, pit, cold shut;Tin phosphorus bronze band rolls up base:
Thick 14.5mm, width 430mm, long 80m.
In step b, the high-tin bronze strand after volume base is subjected to pre- breaking down processing, is carried out by the way of arc control pre-
Breaking down, deflection 35%.
In step c, the volume base after pre- breaking down is subjected to homogenizing annealing, annealing temperature is 620 DEG C, soaking time 8h,
The surface layer for further improving tin is segregated situation.
In step d, the volume base after homogenizing annealing is subjected to milling surface treatment, online or offline milling face is gone per facing cut
0.65mm mainly removes surface scale and eliminates surface layer segregation layer;
In step i, continuous annealing treatment is carried out in air-cushion type annealing furnace, high Sn-P-Cu alloy controls skill using ultra-fine grain
Art, tensile strength are controlled in 520MPa, 90 degree of bendings, and R/T zero, bending is not cracked;
In step j, the band after continuous annealing treatment is subjected to finish rolling, deflection 30%;
In step m, the band of pickling processes is subjected to stretch-bending straightening, using elongation control pattern, given elongation percentage is
3.4%, it is on the one hand the plate shape for aligning band, on the other hand contributes to the elastic limit for promoting material;
In step n, the band of stretch-bending straightening is subjected to process annealing, using continuous annealing treatment, the temperature of process annealing is 400
DEG C, on the one hand speed 39m/min eliminates the residual stress of band, be on the other hand the comprehensive performance for improving material, especially
The elongation percentage performance of material;
By the above melting, pre- breaking down, homogenizing annealing, milling face, roughing, continuous annealing, finish rolling, stretch bending are rectified, low temperature tension moves back
After the working processes such as fire, performance is shown in Table the embodiment 8 in 2.
Claims (9)
1. a kind of high-performance phosphorus bronze band, it contains the chemical composition of following weight percent:Sn10.0~13.0%, Zn 0.1
~0.65%, Ni 0.05~0.5%, Fe 0.1~0.5%, P 0.01~0.5%, RE 0.001-0.02%, B 0.005~
0.05%, remaining is Cu.
2. high-performance phosphorus bronze band according to claim 1, it is characterised in that:It contains the chemistry of following weight percent
Ingredient, Sn10.5~11.5%, Zn 0.1~0.35%, Ni 0.1~0.2%, Fe 0.1~0.2%, P 0.01~0.05%, RE
0.005-0.01%, B 0.015~0.03%, remaining is Cu.
3. a kind of process being used to prepare high-performance phosphorus bronze band as described in claim 1, includes following steps:a.
Dispensing is carried out according to mass percent, is fed intake, melting and casting, the pre- breaking down of b., c. homogenizing annealings, the milling faces d., e. roughing, f.
Intermediate annealing, g. pickling are rolled in h., i. continuous annealings, j. finish rolling, k. pickling, m. stretch-bending straightenings, n. process annealings, o. sub-cuts,
P. packaging and storage.
4. process according to claim 3, it is characterised in that:Copper is first added(Cu), nickel(Ni), iron(Fe), fusing
Tin is added at low temperature again afterwards(Sn), zinc ingot metal(Zn), wait for that all melting low temperature is added copper phosphorus(Cu-P), rare earth(RE)Alloy and nickel
Boron alloy(NiB), components tests are qualified and after clearing up clinker, and the charcoal after baking is used to cover;Existed using power frequency induction furnace
Founding is carried out under non-vacuum environment, the temperature of the casting is controlled at 1190~1210 DEG C, cast using horizontal casting mode.
5. process according to claim 4, it is characterised in that:Horizontal casting casting technique requires control as follows:It adopts
Be between being 10.0 ~ 12.0mm, be pulled with the length that is pulled 0.6 ~ 0.9s, in stop 2.5 ~ 3.2s, return push away length be 1.0 ~ 2.0mm,
It returns and pushes away the time as 0.2 ~ 0.4s, casting speed is 120 ~ 170mm/min, 250 ~ 400 DEG C of made-up belt outlet temperature;Tin phosphorus bronze band is rolled up
Base:13.5 ~ 15.5mm of thickness, wide 430 ~ 650mm, long 70-150m.
6. process according to claim 3, it is characterised in that:In stepb, it is carried out by the way of arc control
Pre- breaking down, deflection 30-35%, in step c, the annealing temperature is 610-630 DEG C, and the soaking time is 8-
10h。
7. process according to claim 3, it is characterised in that:In step i, using ultra-fine grain control technology,
The tensile strength control is 500-560MPa.
8. process according to claim 3, it is characterised in that:In step j, the finish rolling working modulus be 30~
50%。
9. process according to claim 3, it is characterised in that:In step m, the stretch-bending straightening is using extension
Rate control model, given elongation percentage are 2.5-4.5%;In step n, the temperature of process annealing is 400 DEG C, speed 35-
45m/min。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266877A (en) * | 2018-11-01 | 2019-01-25 | 福建紫金铜业有限公司 | A kind of preparation method of high property copper alloy |
| CN110253229A (en) * | 2019-07-12 | 2019-09-20 | 姹や寒 | A kind of allowance control method of degree of precision copper strips |
| CN113106290A (en) * | 2021-03-23 | 2021-07-13 | 宁波金田铜业(集团)股份有限公司 | High-performance tin-phosphor bronze strip and preparation method thereof |
-
2018
- 2018-06-28 CN CN201810689150.6A patent/CN108690921A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266877A (en) * | 2018-11-01 | 2019-01-25 | 福建紫金铜业有限公司 | A kind of preparation method of high property copper alloy |
| CN109266877B (en) * | 2018-11-01 | 2019-11-08 | 福建紫金铜业有限公司 | A kind of preparation method of high property copper alloy |
| CN110253229A (en) * | 2019-07-12 | 2019-09-20 | 姹や寒 | A kind of allowance control method of degree of precision copper strips |
| CN113106290A (en) * | 2021-03-23 | 2021-07-13 | 宁波金田铜业(集团)股份有限公司 | High-performance tin-phosphor bronze strip and preparation method thereof |
| CN113106290B (en) * | 2021-03-23 | 2022-04-26 | 宁波金田铜业(集团)股份有限公司 | High-performance tin-phosphor bronze strip and preparation method thereof |
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Application publication date: 20181023 |