CN108754223A - A kind of corrosion resistant high intensity aluminum bronze phosphorus alloy and its forming technology - Google Patents
A kind of corrosion resistant high intensity aluminum bronze phosphorus alloy and its forming technology Download PDFInfo
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- CN108754223A CN108754223A CN201810693687.XA CN201810693687A CN108754223A CN 108754223 A CN108754223 A CN 108754223A CN 201810693687 A CN201810693687 A CN 201810693687A CN 108754223 A CN108754223 A CN 108754223A
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- high intensity
- aluminum bronze
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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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
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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
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Abstract
The present invention relates to a kind of corrosion resistant high intensity aluminum bronze phosphorus alloys, it contains the chemical composition of following weight percent：Sn3.0~14.0%, Zn 0.1~2%, Ni 0.05~0.5%, Fe 0.01~0.05%, P0.3~0.5%, RE 0.001~0.02%, B 0.01~0.05%, remaining is Cu.A kind of process being used to prepare high intensity aluminum bronze phosphorus alloy has been further related to, has included 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 a kind of corrosion resistant high intensity aluminum bronze phosphorus alloy
And its forming technology.
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,
But in the prior art, in production Sn-P-Cu alloy, it is easy to generate hot-short phenomenon during heating, specifically, incite somebody to action
Copper material is heated to after 1100 ~ 1200 DEG C of temperature ranges at room temperature store after its extended stationary periods again, and producing impact value has obviously
The phenomenon that decline.I.e. copper material does not show brittleness at high temperature, and brittleness rising only can be just shown with room temperature impact test,
Decline 50%~60% or more than normal value.To find out its cause, being divided because when copper material carries out hot-working at 1100 ~ 1200 degree
It is distributed in the eutectic fusing of the low melting point of crystal boundary and causes to crack, here it is usually said " hot-short " phenomenons.
Invention content
In view of the deficienciess of the prior art, can eliminate aluminum bronze phosphorus alloy hot-short phenomenon the present invention is directed to a kind of and improve it
The high intensity aluminum bronze phosphorus alloy and its forming technology of corrosion resistance.
To achieve the above object, the present invention provides the following technical solutions：
A kind of corrosion resistant high intensity aluminum bronze phosphorus alloy, it contains the chemical composition of following weight percent：Sn3.0~14.0%,
Zn 0.1~2%, Ni 0.05~0.5%, Fe 0.01~0.05%, P0.3~0.5%, RE 0.001~0.02%, B 0.01~
0.05%, remaining is Cu.
As an improvement of the present invention, it contains the chemical composition of following weight percent, and Sn3.0~8.0%, Zn 0.1~
0.35%, Ni 0.1~0.25%, Fe 0.02% ~ 0.05%, P 0.01~0.05%, RE 0.005-0.01%, B 0.01~
0.04%, remaining is Cu.
As a further improvement on the present invention, Al 0.01~0.04% is further comprised.
As present invention further optimization, Mn 0.03% ~ 0.08% is further comprised.
A kind of process being used to prepare above-mentioned high intensity aluminum bronze phosphorus alloy, includes following steps：A. according to quality
Percentage carries out dispensing, feeds intake, melting and casting, the pre- breaking down of b., c. homogenizing annealings, the milling faces d., e. roughing, is moved back among f.
Fire, 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. packagings
Storage.
As the improvement of the above method, copper is first added at normal temperatures（Cu）, nickel（Ni）, iron（Fe）, then in reacting furnace
Solid solution is carried out to them to be higher than 1000 DEG C and forms α phase solid solution, then it is equal it is cooling after consolidate to α phases within the scope of 800 DEG C -850 DEG C
Tin is added in solution（Sn）, zinc ingot metal（Zn）And manganese（Mn）, wait for that temperature is reduced to 637 DEG C or less addition copper phosphorus（Cu-P）, rare earth
（RE）Alloy, ni-b alloy（NiB）With aluminium (Al), components tests are qualified and after clearing up clinker, covered using the charcoal after baking
Lid.
As being further improved for above-mentioned process, α phase solid solution is to use power frequency induction furnace under non-vacuum environment
Founding is carried out, the temperature of the casting is controlled at 1190~1210 DEG C, cast using horizontal casting mode.
As the preferred of above-mentioned process, 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.
As the further preferred of above-mentioned process, in stepb, pre- breaking down is carried out by the way of arc control,
Deflection is 30-35%, and in step c, the annealing temperature is 200-260 DEG C, and the soaking time is 1-2h.
It is described using ultra-fine grain control technology in step i as the specific technical solution of above-mentioned process
Tensile strength control is 500-560MPa.
Compared with the prior art, the advantages of the present invention are as follows：Solubility of the phosphorus in the αsolidsolution of tin bronze is simultaneously little,
And reduce with the increase of stanniferous amount and the reduction of temperature.It is phosphorous be more than 0.5% tin-phosphor bronze, when solidification, occur at 637 DEG C
Thus peritectic reaction avoids the generation of hot-short phenomenon so being no more than 637 DEG C by controlling bronze hot processing temperature.Meanwhile adding
Stanniferous amount in work tin-phosphor bronze should not exceed 14%, including excessive tin can cause the hardness of alloy to increase so that it is difficult to solid
Other trace elements are added during molten and carry out deformation crystallization.
Specific implementation mode
The preparation of high intensity aluminum bronze phosphorus alloy and processing technology are in the present invention：A. according to mass percent carry out dispensing,
It feeding intake, melting and casting, the pre- breaking down of b., c. homogenizing annealings, the milling faces d., e. roughing, f. intermediate annealings, g. pickling rolls in h.,
I. continuous annealing, 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, electrolytic aluminium, pure manganese.
In step a, the particular order to feed intake is：Copper is first added at normal temperatures（Cu）, nickel（Ni）, iron（Fe）, then
Solid solution is carried out to them to be higher than 1000 DEG C in reacting furnace and forms α phase solid solution, then it is equal cool down after in 800 DEG C of -850 DEG C of models
It encloses in the interior phase solid solution to α and tin is added（Sn）, zinc ingot metal（Zn）And manganese（Mn）, wait for that temperature is reduced to 637 DEG C or less addition copper phosphorus
（Cu-P）, rare earth（RE）Alloy, ni-b alloy（NiB）With aluminium (Al), components tests are qualified and after clearing up clinker, use baking
Charcoal covering afterwards；α phase solid solution is that founding, the temperature control of the casting are carried out under non-vacuum environment using power frequency induction furnace
System is at 1190~1210 DEG C, and wherein horizontal casting casting technique requires control as follows：It uses the length that is pulled for 10.5mm, be pulled it
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
280 DEG C of temperature, the crystallization line on made-up belt surface answer straight, the visible casting flaw such as answer flawless, notch, pit, cold shut；Tin phosphorus is green
Copper strip roll base：Thick 14.5mm, width 650mm, long 120m.
Addition zinc is because zinc can be largely dissolved in the αsolidsolution of copper-tin alloy.Processing tin bronze containing zinc has
There is single-phase αsolidsolution tissue.Zinc has no significant effect the microstructure and mechanical property of tin bronze, but can improve the mobility of alloy,
Reduce crystallization range, mitigates the inverse segregation of tin bronze.In processing tin-phosphor bronze, zinc content is less than 2%, not will produce
Evil influences, therefore the Zn content in the present embodiment ranging from 0.1~2%.
It can dissolve 0.05~0.5% nickel in the solid solution of alloy of the stanniferous amount less than 8%, suitable nickel can improve alloy
Intensity and hardness.Nickel is added in tin bronze can reduce crystallization temperature interval, improve the compactness of casting, reduce segregation, improve
Processing performance improves mechanical property and wearability.But nickel content is excessively high, can make to occur new brittlement phase in alloy, reduce plasticity,
Plastic deformation ability is set to degenerate.Therefore the present embodiment is 0.25% nickel below of addition preferably in tin bronze, energy crystal grain thinning omits
Improve mechanical property.
Manganese reduces solubility of the tin in α phase solid solution, and the tin bronze containing appropriate manganese can be carried by means of solution treatment and timeliness
High intensity and hardness.In fusing, manganese is also easy to produce oxide, drops low-alloyed mobility, casting character is made to degenerate, and similarly, adds
The mechanical property of alloy, but the oxidizable generation refractory oxides of aluminium industry in founding can be improved by entering aluminium, thus be added manganese and aluminium it
Afterwards, it is also added into ni-b alloy at 637 DEG C or less（NiB）, ni-b alloy（NiB）Can improve aluminum bronze phosphorus alloy mechanical property and
Cold and hot state plastic deformation ability plays anti-oxidation effect.637 DEG C of this particular temperature values why are chosen, are because phosphorus exists
Solubility in the αsolidsolution of tin bronze is simultaneously little, and reduces with the increase of stanniferous amount and the reduction of temperature.It is phosphorous to be more than
When solidification, at 637 DEG C or more peritectic reaction occurs for 0.5% aluminum bronze phosphorus alloy, so this bronze hot processing temperature is unsuitable
More than 637 DEG C, hot-short phenomenon otherwise will produce.Therefore, the stanniferous amount processed in tin-phosphor bronze should not exceed 14%
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- first
It rolls, deflection 30-35%.
In step c, the volume base after pre- breaking down is subjected to homogenizing annealing, annealing temperature is 200-260 DEG C, the guarantor
The warm time is 1-2h, and 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 processing is carried out in air-cushion type annealing furnace, high Sn-P-Cu alloy uses ultra-fine grain control technology,
Tensile strength is controlled in 530MPa, 90 degree of bendings, and R/T zero, bending is not cracked；
In step j, continuous annealing treated band 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, strong, the low temperature tension Annealing of stretch bending etc.
After working process, final aluminum bronze phosphorus alloy is obtained.
The above makes the preferred embodiment of the present invention, does not depart from this hair for those of ordinary skill in the art
Under the premise of bright principle, several variations and modifications can also be made, these also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of corrosion resistant high intensity aluminum bronze phosphorus alloy, it contains the chemical composition of following weight percent：Sn3.0~
14.0%, Zn 0.1~2%, Ni 0.05~0.5%, Fe 0.01~0.05%, P0.3~0.5%, RE 0.001~0.02%, B
0.01~0.05%, remaining is Cu.
2. high intensity aluminum bronze phosphorus alloy according to claim 1, it is characterised in that：It contains the change of following weight percent
It studies point, Sn3.0~8.0%, Zn 0.1~0.35%, Ni 0.1~0.25%, Fe 0.02% ~ 0.05%, P 0.01~0.05%,
RE 0.005-0.01%, B 0.01~0.04%, remaining is Cu.
3. high intensity aluminum bronze phosphorus alloy according to claim 2, it is characterised in that：Further comprise Al 0.01~0.04%.
4. high intensity aluminum bronze phosphorus alloy according to claim 2, it is characterised in that：Further comprise Mn 0.03% ~ 0.08%.
5. a kind of process being used to prepare high intensity aluminum bronze phosphorus alloy 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.
6. process according to claim 5, it is characterised in that：Copper is first added at normal temperatures（Cu）, nickel（Ni）, iron
（Fe）, solid solution then is carried out to them to be higher than 1000 DEG C in reacting furnace and forms α phase solid solution, then it is equal cool down after 800 DEG C-
Tin is added into α phase solid solution within the scope of 850 DEG C（Sn）, zinc ingot metal（Zn）And manganese（Mn）, wait for that temperature is reduced to 637 DEG C or less additions
Copper phosphorus（Cu-P）, rare earth（RE）Alloy, ni-b alloy（NiB）With aluminium (Al), components tests are qualified and after clearing up clinker, use
Charcoal covering after baking.
7. process according to claim 6, it is characterised in that：α phase solid solution is using power frequency induction furnace non-real
Founding is carried out under Altitude, the temperature of the casting is controlled at 1190~1210 DEG C, cast using horizontal casting mode.
8. process according to claim 7, 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.
9. process according to claim 5, 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 200-260 DEG C, and the soaking time is 1-
2h。
10. process according to claim 5, it is characterised in that：In step i, using ultra-fine grain control technology,
The tensile strength control is 500-560MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810693687.XA CN108754223A (en) | 2018-06-29 | 2018-06-29 | A kind of corrosion resistant high intensity aluminum bronze phosphorus alloy and its forming technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810693687.XA CN108754223A (en) | 2018-06-29 | 2018-06-29 | A kind of corrosion resistant high intensity aluminum bronze phosphorus alloy and its forming technology |
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| Publication Number | Publication Date |
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| CN108754223A true CN108754223A (en) | 2018-11-06 |
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| CN201810693687.XA Withdrawn CN108754223A (en) | 2018-06-29 | 2018-06-29 | A kind of corrosion resistant high intensity aluminum bronze phosphorus alloy and its forming technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110306077A (en) * | 2019-07-24 | 2019-10-08 | 宁波兴业盛泰集团有限公司 | A kind of electric connector Vulcan metal and preparation method thereof |
| CN116397129A (en) * | 2023-03-06 | 2023-07-07 | 中南大学 | CuSnP alloy material and preparation method and application thereof |
| CN116397129B (en) * | 2023-03-06 | 2024-10-25 | 中南大学 | CuSnP alloy material and preparation method and application thereof |
-
2018
- 2018-06-29 CN CN201810693687.XA patent/CN108754223A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110306077A (en) * | 2019-07-24 | 2019-10-08 | 宁波兴业盛泰集团有限公司 | A kind of electric connector Vulcan metal and preparation method thereof |
| CN116397129A (en) * | 2023-03-06 | 2023-07-07 | 中南大学 | CuSnP alloy material and preparation method and application thereof |
| CN116397129B (en) * | 2023-03-06 | 2024-10-25 | 中南大学 | CuSnP alloy material and preparation method and application thereof |
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Application publication date: 20181106 |
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