CN1225564C - High-zinc-tin-manganese-chromium prass-alloy and its wire material making process - Google Patents
High-zinc-tin-manganese-chromium prass-alloy and its wire material making process Download PDFInfo
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- CN1225564C CN1225564C CN 03115805 CN03115805A CN1225564C CN 1225564 C CN1225564 C CN 1225564C CN 03115805 CN03115805 CN 03115805 CN 03115805 A CN03115805 A CN 03115805A CN 1225564 C CN1225564 C CN 1225564C
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- 239000000956 alloy Substances 0.000 title claims abstract description 71
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 70
- 239000011651 chromium Substances 0.000 title claims abstract description 28
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 title abstract description 9
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 24
- 238000000137 annealing Methods 0.000 claims abstract description 24
- 239000010951 brass Substances 0.000 claims abstract description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000010936 titanium Substances 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000011572 manganese Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 238000005266 casting Methods 0.000 claims description 20
- 239000011135 tin Substances 0.000 claims description 10
- 239000003610 charcoal Substances 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 8
- 238000005554 pickling Methods 0.000 claims description 8
- 239000011701 zinc Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- -1 sodium aluminum fluoride Chemical compound 0.000 claims description 7
- 229910052718 tin Inorganic materials 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 4
- 229910017813 Cu—Cr Inorganic materials 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 238000005482 strain hardening Methods 0.000 claims description 3
- 229910000928 Yellow copper Inorganic materials 0.000 claims 1
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 claims 1
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 22
- 239000010956 nickel silver Substances 0.000 abstract description 15
- 229910052759 nickel Inorganic materials 0.000 abstract description 11
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000009749 continuous casting Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 5
- 239000002253 acid Substances 0.000 abstract 2
- 238000010622 cold drawing Methods 0.000 abstract 2
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 abstract 2
- 238000005406 washing Methods 0.000 abstract 2
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 abstract 1
- 210000000707 wrist Anatomy 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 description 2
- BQCFCWXSRCETDO-UHFFFAOYSA-N [Fe].[Mn].[Cu] Chemical class [Fe].[Mn].[Cu] BQCFCWXSRCETDO-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical group 0.000 description 2
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910017755 Cu-Sn Inorganic materials 0.000 description 1
- 229910017927 Cu—Sn Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- SXKZZFLSYPUIAN-UHFFFAOYSA-N [Cu].[Zn].[Au] Chemical compound [Cu].[Zn].[Au] SXKZZFLSYPUIAN-UHFFFAOYSA-N 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000021050 feed intake Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Adornments (AREA)
- Metal Extraction Processes (AREA)
Abstract
The present invention discloses a high zinc-stannum-manganese-chrome brass alloy and a process of wires manufactured by using the high zinc-stannum-manganese-chrome brass alloy. The high zinc-stannum-manganese-chrome brass alloy comprises 60.0 to 68.0 wt% of copper (Cu), 0.3 to 1.5 wt% of stannum (Sn), 0.1 to 2.0 wt% of manganese (Mn), 0.01 to 0.5 wt% of chromium (Cr), 0.01 to 0.3 wt% of silicon, at least one of aluminum (Al), titanium (Ti) and ferrum (Fe), zinc (Zn) as the rest, and a small number of inevitable impurities, wherein the content of aluminum (Al) is from 0 to 0.5 wt%, the content of the titanium (Ti) is from 0 to 0.5 wt%, and the content of the ferrum (Fe) is from 0 to 0.5 wt%. The manufacturing process comprises the steps of proportioning and mixing materials, smelting, thermal insulation, horizontal continuous casting, cold drawing, descaling, gradient annealing, acid washing, cold drawing, intermediate annealing, acid washing, stretching, relieving internal stresses and bright annealing. The high zinc-stannum-manganese-chrome brass alloy has the characteristic that the strength, the elasticity, the corrosion resistance and the welding performance of the high zinc-stannum-manganese-chrome brass alloy are superior to those of nickel silver containing low nickel, namely that the nickel silver contains nickel with the content of less than 15%; the high zinc-stannum-manganese-chrome brass alloy has the characteristics of environmental protection and low cost, and is suitable to be used to manufacture spectacle frames, pen caps, pen points, wrist watch shells, clock cases, watch bands and various ornaments contacting with human bodies.
Description
Technical field
The present invention relates to the manufacturing process of a kind of high-zinc-tin-manganese-chromium brass alloys and wire rod thereof.
Background technology
The making widespread use Alpaka and the German silver of existing spectacle frame and other many ornaments, especially German silver is owing to have silvery white beautiful appearance, and high temperature resistant, snappiness, good physical and chemical performance such as corrosion-resistant, and be widely used in making medicine equipment, ornament and spectacle frame.Yet contain nickel element in the above-mentioned alloy, and nickel element has sensitivity response and carcinogenic tendency to human body, thereby in the alloy material that developed countries has limited with human body contacts nickel content and appeal to cancel the use of the nickeliferous product that directly contacts with human body, simultaneously because Market competition, high property product is progressively paid attention to by market at a low price, nickel valency in the German silver costs an arm and a leg, make material cost high, so an urgent demand development and development of new environmental protection and the honest and clean material substitution German silver of property favorable rates.Germany WIELAND company has developed the manganese-copper of a kind of copper-manganese-iron series, but it produces difficulty in batches, at first be manganese content height in the alloy, and the manganese element in this alloy very easily oxidation, slag making in melting, need (rare gas element that be used for anti-oxidation) melting under protective atmosphere; Next is a plasticity extreme difference in this alloy processing, easily produces lattice distortion, can't produce qualified wire rod, generally can only produce bar, so the manganese-copper of copper-manganese-iron series is not widely used.Therefore, develop a kind of low nickel German silver physical and chemical performance that both had, the equivalent material that meets the requirement of ecological environmental protection and HUMAN HEALTH again has obvious practical significance.
Summary of the invention
The objective of the invention is in order to adapt to environmental protection, protection HUMAN HEALTH and cheap requirement; a kind of high-zinc-tin-manganese-chromium brass alloys that do not contain nickel element are provided; the mechanical property of this alloy, process for processing performance can substitute the following German silver of 15% nickel content fully, are a kind of ecological environmental protection type quality matetrials with high strength, snappiness, corrosion-resistant, good welding performance, tool simulating golden colour outward appearance.
Another object of the present invention provides a kind of production technique of wire rod of described high-zinc-tin-manganese-chromium brass alloys.
The novel alloy that the present invention provides for achieving the above object is:
This kind high-zinc-tin-manganese-chromium brass alloys, it contains in the silicon of chromium Cr, 0.01～0.3wt% of manganese Mn, 0.01～0.5wt% of tin Sn, 0.1～2.0wt% of copper Cu, 0.3～1.5wt% of 60.0～68.0wt% and aluminium Al, titanium Ti, three kinds of elements of iron Fe at least a, the content of described three kinds of elements is respectively: aluminium Al is 0～0.5wt%, titanium Ti is 0～0.5wt%, iron Fe is 0～0.5wt%, and the surplus composition in the alloy is zinc Zn and a small amount of unavoidable impurities.Wherein, the optimum content of elemental copper is 62.5～65.5wt% in the described alloy; The optimum content of element tin is 0.4～0.9wt%; The optimum content of element manganese is 0.7～1.1wt%; The optimum content of elemental chromium is 0.01～0.2wt%.In addition, the metallographic structure of described alloy is the α phase, perhaps for α serving as main have in addition a small amount of β phase, β phase content≤2% mutually; Grain fineness number is 0.025～0.04mm.
The selection principle and the requirement of described alloy ingredient are: the composition scope of copper had both required to guarantee that material had high-ductility, guaranteed that again it has easy processing forming.The composition of Sn is used for making alloy to produce the Cu-Sn strengthening phase with the raising strength of materials, and makes alloy have beautiful color, can suppress the solidity to corrosion of alloy dezincify and raising alloy simultaneously; The composition of Mn is used for the solution strengthening effect of alloy, can improve intensity, elasticity, the hardness of alloy, improves the cold and hot pressure machining characteristics of alloy, and improves the solidity to corrosion of alloy in various salt greatly; The composition of Cr is used to stop that grain fineness number is excessive, the crystal grain of refinement alloy, improves the softening temperature and the resistance to corrosion of alloy; Si is used to make alloy to have good welding property; Other composition in the alloy helps every performance of further raising and balanced alloy.
The process for making of the wire rod of the described high-zinc-tin-manganese-chromium brass alloys of the production that the present invention takes is followed successively by, and: a. joins and feeds intake and melting, b. be incubated and horizontal casting, c. cold drawn stripping off the skin, d. gradient annealing, the e. pickling, f. is cold drawn, g. process annealing, h. pickling, i. stretches, and i. eliminates the internal stress clean annealing; Its feeding sequence is: add copper, silicon and charcoal earlier, add zinc, tin, manganese, sodium aluminum fluoride Na after waiting to melt again
3AlF
6With the necessary component aluminium of selectivity, titanium, iron, add the Cu-Cr alloy before coming out of the stove again, add before copper chromium master alloy is come out of the stove and be used to stop that grain fineness number is big, crystal grain thinning and the anti-softening temperature of raising alloy; Smelting temperature is 1150～1400 ℃; Insulation and horizontal casting temperature are 1100～1350 ℃; The gradient annealing temperature is 520～700 ℃, and the time is 1～4 hour, and at protective atmosphere N
2+ (3～25%) H
2In carry out, in protective gas, add 3～25%H
2, can make the bright and clean light of product surface; The process annealing temperature is 400～700 ℃, and the time is 1～4 hour; Eliminating internal stress clean annealing (or claiming finished products) temperature is 100～450 ℃, and the time is 60～150 minutes.
Adopted the anti-technology that pushes away in the horizontal casting, casting speed is 0 5～2.2m/min, elongation is 8～25mm, stop the counter 1～2mm that pushes away after 1～2 second, adopt the anti-technology that pushes away in the castingprocesses, purpose is to eliminate the casting billet surface transverse crack, and best horizontal continuous casting process can make casting billet surface crystallization linear light sliding, is convenient to postorder processing.
Cold working rate in the described drawing process is 20%～80%.
In addition, adopted the charcoal covering in described melting technology, charcoal layer thickness is more than the 150mm, and adding has sodium aluminum fluoride Na in stove
3AlF
6, the effect of charcoal is to absorb the H in the melt
2, O
2Gas, and the adding of sodium aluminum fluoride can make various oxide compounds form double salt, scum silica frost, are easy to remove behind continuous casting; What adopt during horizontal casting is the high purity graphite crystallizer, and the cast resistance when helping reducing the high alloy cast adds the anti-process application that pushes away, and can prevent that zinc oxide from adhering to the crystallizer inwall, can guarantee that strand has brighter and cleaner surface.
Compared with prior art, the invention has the advantages that the high-zinc-tin-manganese-chromium brass alloys are a kind of " nickel-free copper alloy " materials, its intensity, elasticity, corrosion-resistant, welding property and decorate properties are better than the following German silver of 15% nickel content, material cost is far below German silver, and its production method has, and technical process is short, the characteristics of constant product quality, and yield rate can be up to more than 84%.Be applicable to and make spectacle frame and other various ornaments that contacts with human body, also can be used for making various high-strength, snappiness, easy welding fabrication, anti-corrosion, have colden visual appearance and human body do not had the various ornaments of infringement, be the good substitute of hanging down the nickel German silver.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Specific embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment
Table 1 (seeing page 5) has been listed 10 alloy ingredient prescriptions of the present invention and performance perameter thereof, therefrom can find the alloy ingredient prescription following (seeing Table 2) of wherein preferred embodiment:
The alloy ingredient prescription of table 2 preferred embodiment:
| Element | Cu | Sn | Mn | Cr | Ti | Si | Al | Zn |
| Content (wt%) | 63.5 | 0.60 | 0.70 | 0.10 | 0.03 | 0.12 | 0.18 | Surplus |
The process for making of high-zinc-tin-manganese-chromium brass alloys wire rod (referring to accompanying drawing 1) is as follows:
A. join and feed intake and melting, b. insulation and horizontal casting, c. is cold drawn to strip off the skin, the annealing of d. gradient, the e. pickling, f. is cold drawn, g. process annealing, the h. pickling, i. stretches, and j. eliminates the internal stress clean annealing.Above process is auspicious state as follows:
Joining feeding sequence is: add copper, silicon and charcoal earlier in medium-frequency induction furnace, add zinc, tin, manganese, sodium aluminum fluoride (Na after waiting to melt again
3AlF
6) and the necessary component of selectivity, add the Cu-Cr alloy before coming out of the stove again, add before copper chromium master alloy is come out of the stove and be used to stop that grain fineness number is big, crystal grain thinning and the anti-softening temperature of raising alloy.
Smelting temperature is 1150～1400 ℃, adopts charcoal to cover in the melting technology, and charcoal layer thickness is more than the 150mm, and adds sodium aluminum fluoride (Na in stove
3AlF
6), the effect of charcoal is to absorb the H in the melt
2, O
2Gas, and the adding of sodium aluminum fluoride can make various oxide compounds form double salt, scum silica frost, are easy to remove behind continuous casting.
Insulation and horizontal casting temperature are 1100～1350 ℃, consider the zinc oxide of alloy in the horizontal casting and adopted the anti-technology that pushes away, the cast specification is Φ 10～15mm, casting speed is 0.5～2.2m/min, and elongating (pitch) is 8～25mm, stops the counter 1～2mm that pushes away after 1～2 second, adopt the anti-technology that pushes away in the castingprocesses, purpose is to eliminate the casting billet surface transverse crack, makes casting billet surface crystallization linear light sliding, is convenient to postorder processing; In addition, adopted the high purity graphite crystallizer during horizontal casting, the cast resistance when helping like this reducing the high alloy cast adds the anti-process application that pushes away, and can prevent that zinc oxide from adhering to the crystallizer inwall, can guarantee that strand has brighter and cleaner surface.
The gradient annealing temperature is 520～700 ℃, and the time is 1～4 hour, and at protective atmosphere N
2+ (3～25%) H
2In carry out, in protective gas, add 3～25%H
2, can make the bright and clean light of product surface.
Because the horizontal continuous casting billet elongation is not very high and this alloy surface has local defect and segregation layer, in following process, can give full play to its plasticity for making it, earlier surface imperfection and segregation layer are removed, drawing process is: Φ 12 → Φ 10.8 contracts and 10.5 digs 10.2 annealing → Φ, 8.8 → Φ, 7.8 annealing and picklings → Φ 5.6 → Φ 5.0 annealing and picklings → up to the corresponding specification finished product of customer demand.
The process annealing temperature is 400～700 ℃, and the time is 1～4 hour.
Eliminating internal stress clean annealing (or claiming finished products) temperature is 100～450 ℃, and the time is 60～150 minutes.
Cold working rate in the drawing process is 20%～80%.
The final finished specification is Φ 0.1～8.0mm, and metallographic structure is the alloy of α phase or alpha+beta phase (β is few≤2% mutually), and grain fineness number is 0.025～0.04mm, and color is 18～24K gold.
The high-zinc-tin-manganese-chromium brass of present embodiment and the physicals of wire rod thereof reach:
Electric conductivity (%IACS): 8
Density (g/cm
3): 8.56
Thermal conductivity (W/m.k):＜65
Young's modulus (KN/mm
2): 96 (German silver is 130)
The high-zinc-tin-manganese-chromium brass alloys of present embodiment and the mechanical property of wire rod thereof (reach with zinc gold copper and compare) see Table 3:
The mechanical property of table 3, high-zinc-tin-manganese-chromium brass alloys and wire rod thereof (reach with German silver and compare)
From above data, color and luster is that the elasticity of the golden high-zinc-tin-manganese-chromium brass alloys of 18～24K is obviously better than the German silver of light silver color, and can process with mechanical property and also obviously be better than German silver.
10 alloy ingredient prescriptions of table 1 the present invention and performance perameter thereof:
Claims (9)
1, a kind of high-zinc-tin-manganese-chromium brass alloys, it contains in the silicon of chromium Cr, 0.01～0.3wt% of manganese Mn, 0.01～0.5wt% of tin Sn, 0.1～2.0wt% of copper Cu, 0.3～1.5wt% of 60.0～68.0wt% and aluminium Al, titanium Ti, three kinds of elements of iron Fe at least a, the content of described three kinds of elements is respectively: aluminium Al is 0～0.5wt%, titanium Ti is 0～0.5wt%, iron Fe is 0～0.5wt%, and the surplus composition in the alloy is zinc Zn and a small amount of unavoidable impurities.
2, high-zinc-tin-manganese-chromium brass alloys according to claim 1, the content that it is characterized in that elemental copper in the described alloy is 62.5～65.5wt%.
3, high-zinc-tin-manganese-chromium brass alloys according to claim 1, the content that it is characterized in that element tin in the described alloy is 0.4～0.9wt%.
4, high-zinc-tin-manganese-chromium brass alloys according to claim 1, the content that it is characterized in that element manganese in the described alloy is 0.7～1.1wt%.
5, high-zinc-tin-manganese-chromium brass alloys according to claim 1, the optimum content that it is characterized in that elemental chromium in the described alloy is 0.01～0.2wt%.
6, according to the described high zinc-manganese chrome yellow copper alloy of arbitrary claim in the claim 1～5, the metallographic structure that it is characterized in that described alloy is the α phase, perhaps for α serving as main have in addition a small amount of β phase, β phase content≤2% mutually; Grain fineness number is 0.025～0.04mm.
7, a kind of manufacturing process of producing the wire rod of high-zinc-tin-manganese-chromium brass alloys as claimed in claim 1,: a. joins and feeds intake and melting to it is characterized in that its production process is followed successively by, b. be incubated and horizontal casting, c. is cold drawn to strip off the skin, the annealing of d. gradient, e. pickling, f. cold drawn, g. process annealing, h. pickling, i. stretch, j. eliminates the internal stress clean annealing; Wherein, feeding sequence is: add copper, silicon and charcoal earlier, add zinc, tin, manganese, sodium aluminum fluoride Na after waiting to melt again
3AlF
6With the necessary component aluminium of selectivity, titanium, iron, add Cu-Cr alloy refinement crystal grain before coming out of the stove again and improve anti-softening temperature; Smelting temperature is 1150～1400 ℃; Insulation and horizontal casting temperature are 1100～1350 ℃; The gradient annealing temperature is 520～700 ℃, and the time is 1～4 hour, and at protective atmosphere N
2+ (3～25%) H
2In carry out; The process annealing temperature is 400～700 ℃, and the time is 1～4 hour; Eliminating internal stress clean annealing temperature is 100～450 ℃, and the time is 60～150 minutes.
8, manufacturing process according to claim 7 is characterized in that having adopted in the described horizontal casting the anti-technology that pushes away, and casting speed is 0.5～2.2m/min, and elongation is 8～25mm, stops the counter 1～2mm that pushes away after 1～2 second.
9,, it is characterized in that the cold working rate in the described drawing process is 20%～80% according to claim 7 or 8 described manufacturing process.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03115805 CN1225564C (en) | 2003-03-14 | 2003-03-14 | High-zinc-tin-manganese-chromium prass-alloy and its wire material making process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03115805 CN1225564C (en) | 2003-03-14 | 2003-03-14 | High-zinc-tin-manganese-chromium prass-alloy and its wire material making process |
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|---|---|
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| CN1225564C true CN1225564C (en) | 2005-11-02 |
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| ES2360802T3 (en) * | 2004-05-05 | 2011-06-09 | Luvata Oy | HEAT TRANSFER TUBE BUILT FROM A BRASS AND TIN ALLOY. |
| CN100339633C (en) * | 2005-09-09 | 2007-09-26 | 中铝洛阳铜业有限公司 | Method for producing red brass pipe |
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2003
- 2003-03-14 CN CN 03115805 patent/CN1225564C/en not_active Expired - Lifetime
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