CN101665885A - Casting non-leaded easily-cutting brass - Google Patents
Casting non-leaded easily-cutting brass Download PDFInfo
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- CN101665885A CN101665885A CN200910044315A CN200910044315A CN101665885A CN 101665885 A CN101665885 A CN 101665885A CN 200910044315 A CN200910044315 A CN 200910044315A CN 200910044315 A CN200910044315 A CN 200910044315A CN 101665885 A CN101665885 A CN 101665885A
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- brass
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- antimony
- iron
- leaded
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- 238000005520 cutting process Methods 0.000 title claims abstract description 89
- 229910001369 Brass Inorganic materials 0.000 title claims abstract description 71
- 239000010951 brass Substances 0.000 title claims abstract description 71
- 238000005266 casting Methods 0.000 title claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000010949 copper Substances 0.000 claims abstract description 54
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 42
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000011572 manganese Substances 0.000 claims abstract description 40
- 239000000203 mixture Substances 0.000 claims abstract description 39
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 38
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052802 copper Inorganic materials 0.000 claims abstract description 38
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 25
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052796 boron Inorganic materials 0.000 claims abstract description 23
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000012535 impurity Substances 0.000 claims abstract description 22
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 22
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000010703 silicon Substances 0.000 claims abstract description 22
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 22
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052742 iron Inorganic materials 0.000 claims abstract description 21
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 21
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011701 zinc Substances 0.000 claims abstract description 21
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 21
- 239000004411 aluminium Substances 0.000 claims description 37
- 239000000956 alloy Substances 0.000 description 29
- 229910045601 alloy Inorganic materials 0.000 description 27
- 238000003754 machining Methods 0.000 description 21
- 238000005275 alloying Methods 0.000 description 19
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 17
- 229910001340 Leaded brass Inorganic materials 0.000 description 17
- 239000011575 calcium Substances 0.000 description 17
- 229910052791 calcium Inorganic materials 0.000 description 17
- 239000004615 ingredient Substances 0.000 description 17
- 239000004576 sand Substances 0.000 description 17
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 17
- 239000007858 starting material Substances 0.000 description 16
- 229910052797 bismuth Inorganic materials 0.000 description 7
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PEEDYJQEMCKDDX-UHFFFAOYSA-N antimony bismuth Chemical compound [Sb].[Bi] PEEDYJQEMCKDDX-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002180 anti-stress Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Lead Frames For Integrated Circuits (AREA)
- Contacts (AREA)
Abstract
一种铸造无铅易切削黄铜，本发明黄铜各成分质量分数是：铜56.0％－68.0％，锰2.0％－2.9％，锑2.1％－3.0％，铁0.1％－0.2％，硼0－0.05％，硅0－0.1％，铝0.2％－0.3％，钪或钇0.6％－1.2％，余量为锌，其中锰和锑的总和不超过5.1％、杂质总量不超过0.05％。本发明通过调整黄铜成分，优化了黄铜的微观组织。从一系列的成分中筛选出具有良好切削性能和铸造性能的黄铜成分，其流动性为60－70cm，切削性能相当于HPb59－1的72％－82％。本发明的无铅铸造易切削黄铜适用于铸件的切削加工。A cast lead-free free-cutting brass. The mass fraction of the brass components in the present invention is: copper 56.0%-68.0%, manganese 2.0%-2.9%, antimony 2.1%-3.0%, iron 0.1%-0.2%, boron 0% -0.05%, silicon 0-0.1%, aluminum 0.2%-0.3%, scandium or yttrium 0.6%-1.2%, the balance is zinc, of which the sum of manganese and antimony does not exceed 5.1%, and the total amount of impurities does not exceed 0.05%. The invention optimizes the microstructure of the brass by adjusting the composition of the brass. A brass component with good cutting performance and casting performance is screened out from a series of components, its fluidity is 60-70cm, and its cutting performance is equivalent to 72%-82% of HPb59-1. The lead-free cast free-cutting brass of the invention is suitable for cutting of castings.
Description
Technical field
The present invention is a kind of metallic substance, relates to non-leaded easily-cutting brass.
Background technology
Plumbous when the casting of leaded brass melt is solidified, precipitation in alloy and form disperse and fine plumbous particle, the plumbous molecule that this disperse distributes in the leaded brass has at crystal boundary and intracrystalline.Lead has more crisp and soft characteristics, adds man-hour when leaded brass is cut, and smear metal is peeled off from the workpiece cutting by cutter head, and the plumbous particle of these disperses becomes stress raiser, produces so-called " notched effect ", thereby causes smear metal to be easy in this fracture; And the plumbous particle of these disperses is softer, can make tool bit abrasion reduce to minimum.Because plumbous particulate has at intracrystalline and crystal boundary, when leaded brass during in machining, smear metal runs into plumbous particulate soon and ruptures, and lacks so smear metal is thin.In addition, plumbous particulate fusing point lower (plumbous fusing point only is 327.5 ℃), cutter head does work to cutting workpiece during machining, and energy of deformation, frictional energy are transformed into heat energy, the local moment that cutter head is contacted with smear metal is rapidly heated, be easy near in addition surpass plumbous temperature of fusion.Softening even lead fusing can play the effect of lubricated cutter, can reduce cutting resistance and improve stock-removing efficiency.Therefore, lead plays a part cracked smear metal, reduces bonding and seam and improves cutting speed in the cutting process of brass material, can increase the work-ing life of cutter greatly.
Because plumbous inherent natural disposition, its size, pattern, quantity, characteristic, distribution situation, distributing position in leaded brass not only makes leaded brass have excellent cutting ability, and make leaded brass have advantages such as good castability, cold-forming property, hot workability and self-lubricating, can satisfy the machining requirement of different shape component.Winn bronze once by universally acknowledged be important base mateiral, be widely applied to foundry goods and many fields such as accessory, electronics, automobile and machinofacture thereof of domestic water supply system.
After the leaded brass spare and accessory parts were scrapped, a lot of smallclothes were used as rubbish and abandon, and have only to be recovered utilization on a small quantity.The depleted leaded brass contacts with soil, and its contained lead enters soil under rainwater and atmospheric long term, thus contaminated soil and water source.When discarded leaded brass was taken as waste incineration, plumbous steam distributed among atmosphere, human body is produced greatly harm, thereby it used the restriction that is subjected to strictness day by day.Lead under the effect of impurity in tap water and organic acid etc. in the copper alloy containing lead is slowly separated out with the ionic form, and existing copper alloy containing lead is difficult to satisfy the requirement of environmental protection act.
Development of new environment-protective free-cutting brass is an international problem, though obtained very big achievement at present, also has a large amount of needs of work to go to finish to improve performance, increase kind, to widen range of application.A large amount of lead-free free-cutting bismuth brass patents has been invented in America and Japan Europe, and a plurality of lead-free free-cutting bismuth brass patents have also been invented by China, as: leadless free-cutting brass alloy material and its manufacture method, 02121991.5; Leadless free-cutting brass alloy, 200310109162.0; Ecological, environmental protective new type leadless easy cutting low antimony bismuth brass alloys and manufacture method thereof, 200510050425.4; Pb-free copper-alloy, 200610005689.2; A kind of unleaded easy-cutting magnesium-bismuth-brass alloys, 200710098481.4.Above-mentioned non-leaded easily-cutting brass has one or more excellent performances at aspects such as cutting ability, cold and hot working performance, mechanical property, anti-stress cracking performance, corrosion resistances, indivedual performances even near the performance of leaded brass.But, compare with leaded brass, on castability, also have bigger gap.In fact, want to develop a kind of novel non-leaded easily-cutting brass that all properties is all complete and leaded brass compares favourably, also impossible at present.Current the most frequently used method proposes concrete performance requriements still at the processing conditions and the application requiring of free-cutting brass, and then according to performance index development of new brass.Bismuth element is the alloying element that a kind of replacement lead commonly used is used for free-cutting brass, and the patent of relevant bismuth brass also has a plurality of, such as: leadless free-cutting brass alloy material and its manufacture method, 02121991.5; Leadless free-cutting brass alloy, 200310109162.0; Ecological, environmental protective new type leadless easy cutting low antimony bismuth brass alloys and manufacture method thereof, 200510050425.4; Pb-free copper-alloy, 200610005689.2; A kind of unleaded easy-cutting magnesium-bismuth-brass alloys, 200710098481.4.Above-mentioned non-leaded easily-cutting brass has good machinability, but its castability compares with leaded brass and also have big gap, and its cost also is higher than leaded brass.
The present invention on the basis of multianalysis metallic character, by adjusting alloying constituent, optimizes the microtexture of alloy according to the metal cutting machining principle, filters out the brass composition with good cutting ability and castability from a series of composition.
Summary of the invention
The objective of the invention is to effectively solve the problem of leaded brass contaminate environment and unleaded bismuth brass foundry poor performance, alloy of the present invention does not adopt bismuth element commonly used, good castability is not only arranged but also good machinability is arranged.Can provide a kind of castability good non-leaded easily-cutting brass for fields such as electron device, hot-water heating bathroom, structural parts.
The massfraction of non-leaded easily-cutting brass composition of the present invention: copper (Cu) 56.0%-68.0%, manganese (Mn) 2.0%-2.9%, antimony (Sb) 2.1%-3.0%, iron (Fe) 0.1%-0.2%, boron (B) 0-0.05%, silicon (Si) 0-0.1%, aluminium (Al) 0.2%-0.3%, scandium (Sc) or yttrium (Y) 0.6%-1.2%, surplus is zinc (Zn), but the summation of manganese and antimony is no more than 5.1%, total impurities is no more than 0.05%.
Technical process of the present invention is as follows:
Line frequency furnace, medium-frequency induction furnace or resistance furnace are used in the preparation of casting non-leaded easily-cutting brass of the present invention, the composition quality mark is: copper (Cu) 56.0%-68.0%, manganese (Mn) 2.0%-2.9%, antimony (Sb) 2.1%-3.0%, iron (Fe) 0.1%-0.2%, boron (B) 0-0.05%, silicon (Si) 0-0.1%, aluminium (Al) 0.2%-0.3%, scandium (Sc) or yttrium (Y) 0.6%-1.2%, surplus is zinc (Zn), but the summation of manganese and antimony is no more than 5.1%, total impurities is no more than 0.05%.At first with the copper sheet fusing, follow-up order of addition(of ingredients) is: silicon, iron, boron, aluminium, calcium halophosphate activated by antimony andmanganese, scandium or yttrium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.
Advantage of the present invention:
1) non-leaded easily-cutting brass that invention castability is good does not adopt bismuth element commonly used, good castability is not only arranged but also good machinability is arranged.
2) realized the unleaded of free-cutting brass, alloy is not leaded, and is environmentally friendly, to HUMAN HEALTH.
3) production technique is simple, can utilize existing leaded brass equipment to produce, and only needs that it is carried out prepurging and handles, and does not need new investment.
Embodiment
Embodiment 1:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 56.0%, and manganese 2.0%, antimony (Sb) 2.1%, iron (Fe) 0.1%, aluminium 0.2%, scandium (Sc) 0.6%, surplus is zinc (Zn), total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: silicon, iron, boron, aluminium, calcium halophosphate activated by antimony andmanganese, scandium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 60cm, and cutting ability is equivalent to 76% of HPb59-1.
Embodiment 2:
Each composition quality mark of non-leaded easily-cutting brass is: copper 56.0%, and manganese 2.4%, antimony (Sb) 2.7%, iron (Fe) 0.1%, boron (B) 0.05%, aluminium (Al) 0.2%, scandium (Sc) 1.0%, surplus is zinc (Zn), total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: iron, boron, aluminium, calcium halophosphate activated by antimony andmanganese, scandium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 62cm, and cutting ability is equivalent to 82% of HPb59-1.
Embodiment 3:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 60.0%, and manganese (Mn) 2.6%, antimony (Sb) 2.5%, iron (Fe) 0.2%, aluminium (Al) 0.3%, scandium (Sc) 0.8%, surplus is zinc (Zn), total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: iron, aluminium, calcium halophosphate activated by antimony andmanganese, scandium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 68cm, and cutting ability is equivalent to 76% of HPb59-1.
Embodiment 4:
Each composition quality mark of non-leaded easily-cutting brass is: copper 64.0%, and manganese 2.3%, antimony 2.4%, iron 0.1%, boron 0.05%, silicon 0.01%, aluminium 0.2%, scandium 1.2%, surplus is a zinc, total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: silicon, iron, boron, aluminium, calcium halophosphate activated by antimony andmanganese, scandium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 66cm, and cutting ability is equivalent to 77% of HPb59-1.
Embodiment 5:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 68.0%, and manganese (Mn) 2.0%, antimony (Sb) 2.7%, iron (Fe) 0.2%, aluminium (Al) 0.3%, scandium (Sc) 0.8%, surplus is zinc (Zn), total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: iron, aluminium, calcium halophosphate activated by antimony andmanganese, scandium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 65cm, and cutting ability is equivalent to 78% of HPb59-1.
Embodiment 6:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 60.0%, manganese (Mn) 2.4%, antimony (Sb) 2.7%, iron (Fe) 0.1%, boron (B) 0.05%, silicon (Si) 0.1%, aluminium (Al) 0.3%, scandium (Sc) 1.0%, surplus are zinc (Zn), and total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: silicon, iron, boron, aluminium, calcium halophosphate activated by antimony andmanganese, scandium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 66cm, and cutting ability is equivalent to 80% of HPb59-1.
Embodiment 7:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 64.0%, manganese (Mn) 2.8%, antimony (Sb) 2.3%, iron (Fe) 0.2%, silicon (Si) 0.01%, aluminium (Al) 0.2%, scandium (Sc) 0.6%, surplus are zinc (Zn), and total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: silicon, iron, aluminium, calcium halophosphate activated by antimony andmanganese, scandium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 69cm, and cutting ability is equivalent to 72% of HPb59-1.
Embodiment 8:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 68.0%, manganese (Mn) 2.3%, antimony (Sb) 2.1%, iron (Fe) 0.2%, silicon (Si) 0.01%, aluminium (Al) 0.2%, scandium (Sc) 0.8%, surplus are zinc (Zn), and total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: silicon, iron, aluminium, calcium halophosphate activated by antimony andmanganese, scandium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 69cm, and cutting ability is equivalent to 73% of HPb59-1.
Embodiment 9:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 56.0%, and manganese (Mn) 2.3%, antimony (Sb) 2.1%, iron (Fe) 0.2%, boron (B) 0.05%, aluminium (Al) 0.3%, yttrium (Y) 0.6%, surplus is zinc (Zn), total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: iron, boron, aluminium, calcium halophosphate activated by antimony andmanganese, yttrium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 63cm, and cutting ability is equivalent to 75% of HPb59-1.
Embodiment 10:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 56.0%, and manganese (Mn) 2.4%, antimony (Sb) 2.7%, iron (Fe) 0.1%, boron (B) 0.05%, aluminium (Al) 0.2%, yttrium (Y) 1.0%, surplus is zinc (Zn), total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: iron, boron, aluminium, calcium halophosphate activated by antimony andmanganese, yttrium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 62cm, and cutting ability is equivalent to 81% of HPb59-1.
Embodiment 11:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 60.0%, and manganese (Mn) 2.6%, antimony (Sb) 2.5%, iron (Fe) 0.2%, aluminium (Al) 0.3%, yttrium (Y) 0.8%, surplus is zinc (Zn), total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: iron, aluminium, calcium halophosphate activated by antimony andmanganese, yttrium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 70cm, and cutting ability is equivalent to 76% of HPb59-1.
Embodiment 12:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 64.0%, manganese (Mn) 2.3%, antimony (Sb) 2.4%, iron (Fe) 0.1%, boron (B) 0.05%, silicon (Si) 0.1%, aluminium (Al) 0.2%, yttrium (Y) 1.2%, surplus are zinc (Zn), and total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: silicon, iron, boron, aluminium, calcium halophosphate activated by antimony andmanganese, yttrium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 66cm, and cutting ability is equivalent to 75% of HPb59-1.
Embodiment 13:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 68.0%, and manganese (Mn) 2.0%, antimony (Sb) 2.7%, iron (Fe) 0.2%, aluminium (Al) 0.3%, yttrium (Y) 0.8%, surplus is zinc (Zn), total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: iron, aluminium, calcium halophosphate activated by antimony andmanganese, yttrium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 64cm, and cutting ability is equivalent to 75% of HPb59-1.
Embodiment 14:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 60.0%, manganese (Mn) 2.4%, antimony (Sb) 2.7%, iron (Fe) 0.1%, boron (B) 0.05%, silicon (Si) 0.1%, aluminium (Al) 0.3%, yttrium (Y) 1.0%, surplus are zinc (Zn), and total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: silicon, iron, boron, aluminium, calcium halophosphate activated by antimony andmanganese, yttrium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 66cm, and cutting ability is equivalent to 80% of HPb59-1.
Embodiment 15:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 64.0%, and manganese (Mn) 2.8%, antimony (Sb) 2.3%, iron (Fe) 0.2%, silicon (Si) 0.1%, aluminium (Al) 0.2%, yttrium (Y) 0.6%, surplus is zinc (Zn), total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: silicon, iron, aluminium, calcium halophosphate activated by antimony andmanganese, yttrium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 61cm, and cutting ability is equivalent to 80% of HPb59-1.
Embodiment 16:
Each composition quality mark of non-leaded easily-cutting brass is: copper (Cu) 68.0%, manganese (Mn) 2.5%, antimony (Sb) 2.6%, iron (Fe) 0.2%, boron (B) 0.05%, silicon (Si) 0.1%, aluminium (Al) 0.3%, yttrium (Y) 1.2%, surplus are zinc (Zn), and total impurities is no more than 0.05%.After preparing starting material, at first with the copper sheet fusing, follow-up order of addition(of ingredients) is: silicon, iron, boron, aluminium, calcium halophosphate activated by antimony andmanganese, yttrium add zinc at last.After treating the fusing of all alloying elements, intensification, flame, coming out of the stove pours into swage and sand mold.Obtain machining sample and volution sample, respectively cutting ability, the flowability of beta alloy.The brass flowability of this composition is 66cm, and cutting ability is equivalent to 77% of HPb59-1.
Claims (2)
1. casting non-leaded easily-cutting brass, it is characterized in that: the mass content of each composition of brass is: copper 56.0%-68.0%, manganese 2.0%-2.9%, antimony 2.1%-3.0%, iron 0.1%-0.2%, boron 0-0.05%, silicon 0-0.1%, aluminium 0.2%-0.3%, scandium or yttrium 0.6%-1.2%, surplus is a zinc, and the summation of manganese and antimony is no more than 5.1%, and the impurity total mass is no more than 0.05%.
2. casting non-leaded easily-cutting brass according to claim 1 is characterized in that: each composition quality mark of brass is: copper 56.0%, manganese 2.4%, antimony 2.7%, iron 0.1%, boron 0.05%, aluminium 0.2%, scandium 1.0%, surplus is a zinc, total impurities is no more than 0.05%.
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| CN102477497A (en) * | 2010-11-30 | 2012-05-30 | 逢威工业(惠阳)有限公司 | Lead-free bismuth free-cutting antimony brass alloy |
| CN102776410A (en) * | 2012-08-24 | 2012-11-14 | 李伟 | Corrosion-resistant copper alloy |
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| US5630984A (en) * | 1992-06-02 | 1997-05-20 | Ideal-Standard Gmbh | Brass alloy |
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| CN102477497A (en) * | 2010-11-30 | 2012-05-30 | 逢威工业(惠阳)有限公司 | Lead-free bismuth free-cutting antimony brass alloy |
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| CN102776410B (en) * | 2012-08-24 | 2014-05-07 | 宁波市阳光汽车配件有限公司 | Corrosion-resistant copper alloy |
| CN103757475A (en) * | 2014-01-10 | 2014-04-30 | 滁州学院 | High-strength free-cutting tin brass alloy material and preparation method thereof |
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| CN103834845B (en) * | 2014-03-10 | 2015-11-11 | 安徽厚林神雕金属艺术品有限公司 | A kind of preparation method of precision casting copper alloy of artwork and the method for precision casting |
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| CN108474063B (en) * | 2015-12-10 | 2020-04-28 | 湖南特力新材料有限公司 | Aluminum oxide dispersion-strengthened lead-free-cutting brass and manufacturing method thereof |
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