CN101289714B - Lead-free and easy-cutting magnesium-bismuth-brass alloys - Google Patents
Lead-free and easy-cutting magnesium-bismuth-brass alloys Download PDFInfo
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- CN101289714B CN101289714B CN2007100984814A CN200710098481A CN101289714B CN 101289714 B CN101289714 B CN 101289714B CN 2007100984814 A CN2007100984814 A CN 2007100984814A CN 200710098481 A CN200710098481 A CN 200710098481A CN 101289714 B CN101289714 B CN 101289714B
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- 239000000956 alloy Substances 0.000 title claims abstract description 88
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 87
- 229910001369 Brass Inorganic materials 0.000 title claims abstract description 79
- 239000010951 brass Substances 0.000 title claims abstract description 79
- 238000005520 cutting process Methods 0.000 title claims abstract description 48
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 27
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 27
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 18
- 239000011777 magnesium Substances 0.000 claims abstract description 18
- 239000011701 zinc Substances 0.000 claims abstract description 11
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
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- 229910052725 zinc Inorganic materials 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- 150000002910 rare earth metals Chemical class 0.000 claims description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 229910020785 La—Ce Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 5
- 238000000137 annealing Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 17
- 238000005275 alloying Methods 0.000 description 15
- SKKNACBBJGLYJD-UHFFFAOYSA-N bismuth magnesium Chemical compound [Mg].[Bi] SKKNACBBJGLYJD-UHFFFAOYSA-N 0.000 description 12
- 229910000928 Yellow copper Inorganic materials 0.000 description 10
- 239000000470 constituent Substances 0.000 description 10
- 239000013078 crystal Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 229910052787 antimony Inorganic materials 0.000 description 6
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 6
- 238000005266 casting Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 229910001340 Leaded brass Inorganic materials 0.000 description 4
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- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
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- 241000024287 Areas Species 0.000 description 1
- 229910001152 Bi alloy Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- YXLXNENXOJSQEI-UHFFFAOYSA-L Oxine-copper Chemical compound [Cu+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 YXLXNENXOJSQEI-UHFFFAOYSA-L 0.000 description 1
- 229910001245 Sb alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- GFAWQOJYGFJWNJ-UHFFFAOYSA-N [Bi].[Zn].[Cu] Chemical compound [Bi].[Zn].[Cu] GFAWQOJYGFJWNJ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a lead-free easily cutting magnesium, bismuth and brass alloy. The alloy comprises the following components in percentage by weight: 50 to 62 percent of brass, 0.5 to 3.0 percent of magnesium, 0.1 to 1.0 percent of bismuth, the balance being zinc and inevitable impurities. The manufacturing method of the alloy is as follows: alloy components are extruded at the temperature of between 580 and 700 DEG C, heat treated at the temperature of between 400 and 600 DEG C for 30min to 6hr, cooled at the cooling speed of less than or equal to 100 DEG C/hr and undergo the finished product annealing at the temperature of less than 400 DEG C. The lead-free easily cutting magnesium, bismuth and brass alloy has the advantages of excellent cutting performance and heat processing performance.
Description
Technical field
The present invention relates to a kind of unleaded brass alloys, especially relate to a kind of magnesium-bismuth-brass alloys with excellent in machinability energy and hot workability, it is specially adapted to replace various mechanical component, the electron device of leaded brass application, Application Areass such as automobile component are a kind of environment-friendly metallic substance that can effectively substitute Winn bronze.
Background technology
The tradition leaded brass has been used more than 1000 year, is widely used in life brightwork, as water tap, door lock, door handle, water pipe, screw, nut, tube stub, or the like ..., in electronics, household electrical appliances, machinery equipment, the material that can not lack especially.Leading in copper, main purpose are easy cutting, cold riveting, the forging processing characteristicies that produces its alloy, to satisfy the needs of various machine spare and accessory parts manufacturing processing.
Be widely used in the brass material of automobile industry, electron trade, hot-water heating bathroom industry at present, all contain the lead of 1-5%, to improve cutting ability.Because the world wide environmental pollution increasingly sharpens the especially pollution of heavy metal " lead ".After " lead " sucks human body, very big to people's physical and mental health influence, and very easily stripping or the volatilization in process of production in water of these lead, thus cause environmental pollution and suck human body.Except wherein " lead " can pollute, more seriously enter the intelligence growth that is directed at human body hormone imbalance and infant in the Drinking Water owing to " lead " stripping in actual use and volatilization.Therefore, be used to improve pollution and the harm that " lead " of brass cutting ability and processing characteristics cause and caused the attention of countries in the world.If not leaded or employing red copper does not then have practical value because of increase in relevant industries relative with cost of mechanical workout cutting ability difference in the brass.
According to the relevant criterion statutory regulations of U.S. NSF, Japanese JIS, German DIN50930 and European Union, and plumbous stripping standard human body associated materials various by 2006 must be reduced to 0.010mg/L from present 0.05mg/L.In the last few years, in the research of no leaded brass, also carried out certain research both at home and abroad, disclosed a kind of patent of invention " Unleaded And Cutting Antimony Brass Alloy " in Chinese patent application number 200410015836.5 specification sheetss for example, it is non-leaded easily-cutting brass material by the invention of Ningbo Bo Wei group, it is by the copper of weight %: 55～65%, antimony: 0.3～2.0%, manganese: 0.4～1.6%, other element: 0.1～1.0%, described other element comprises titanium, zirconium, boron, iron, magnesium, silicon, at least two kinds of elements in the rare earth metal, all the other are zinc and unavoidable impurities.Above-mentioned alloy is a kind of copper-zinc-antimony alloy, owing to contain antimony in the alloy, the hot workability of alloy is poor, has influenced the properties for follow of alloy greatly.Disclosed a kind of patent of invention in Chinese patent application number 02121991.5 specification sheets " leadless free-cutting brass alloy material and its manufacture method ", it is the non-leaded easily-cutting brass material of Japanese Mikoshi Metal Co., Ltd. invention, it is a kind of copper-zinc-bismuth alloy, owing to contain 0.5～2.2% bismuth in this alloy, bi content is higher, and the price of bismuth is very high, so cause its cost up, does not have the market competitiveness.
Summary of the invention
The objective of the invention is to, provide a kind of lead-free, have excellent hot workability, and can substitute the Winn bronze material and help the lead-free free-cutting magnesium-bismuth-brass alloys of environment protection.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
Unleaded easy-cutting magnesium-bismuth-brass alloys of the present invention, its main component comprises (weight %), copper: 50～62%, magnesium: 0.5～3.0%, bismuth: 0.1～1.0%, all the other are zinc and unavoidable impurities.
A kind of optimal technical scheme is characterized in that: the copper in the described magnesium-bismuth-brass alloys, zinc total amount greater than 95% less than 100%.
A kind of optimal technical scheme is characterized in that: also contain 0.001～0.1% phosphorus and silicon in the described magnesium-bismuth-brass alloys.
A kind of optimal technical scheme is characterized in that: also contain 0.1～0.3% zirconium and titanium in the described magnesium-bismuth-brass alloys.
A kind of optimal technical scheme is characterized in that: also contain in the described magnesium-bismuth-brass alloys and be no more than 0.5% iron, boron and rare earth metal.
A kind of optimal technical scheme is characterized in that: in the described magnesium-bismuth-brass alloys rare earth metal be mixed with arbitrary proportion of among the La-Ce one or more.
The manufacture method of described unleaded magnesium-bismuth-brass alloys is, when melting, carry out the melting of copper zinc earlier, temperature is 1150 ℃～1250 ℃, add bismuth subsequently, leave standstill insulation after 10 minutes, add magnesium again, be incubated and cast after 20～40 minutes, pouring temperature is 1050 ℃～1100 ℃, forms alloy cast ingot, above-mentioned alloy pushes under 580～700 ℃ of temperature, under 400～600 ℃ of temperature, heat-treated 30 minutes～6 hours, cool off with≤100 ℃/hour speed of cooling, carry out finished products in the temperature that is lower than 400 ℃, make finished product.
A kind of optimized technical scheme, plumbous as unavoidable impurities, its content is no more than 0.02 weight %.
Function and reason to other element of adding in the alloy of the present invention describes below.
The magnesium-bismuth-brass alloys of described lead-free free-cutting, be to utilize the characteristic that is distributed in intracrystalline and crystal boundary that the compound of magnesium and magnesium bismuth can even dispersion, avoided bismuth to form single fragility phase at the crystal boundary place, make this alloy guarantee to resemble the coppery cutting ability of lead and yellow-collation, and the element of other grain refinings (other element) makes that the distribution of magnesium is more even, has improved its over-all properties greatly.
Simple bismuth-brass alloy, bismuth easily form the hard crisp phase of bulk between crystal boundary, make its hot workability extreme difference, even good cutting ability is arranged, using in actual production neither be very extensive.And magnesium-bismuth-brass alloys of the present invention, effectively avoided this point, because the adding of magnesium, after making that a part of magnesium and bismuth and other materials generation precipitated phase are separated out, with the form even dispersion of tiny particle separate out at crystal boundary, on the other hand, magnesium can be evenly distributed in intracrystalline mutually with second of copper formation.Not only improve its processing characteristics greatly, also well improved its cutting ability.
In addition, interpolation phosphorus and silicon mainly have been desoxydatoins in alloy, improve the flowability of metal, can also improve the intensity of alloy, and general content is 0.001～0.1%, when too high levels, can reduce the electroconductibility of metal.
Adding zirconium and titanium, mainly is to play with part magnesium to generate the intermetallic compound that is distributed on the crystal boundary, makes the distribution small and dispersed of precipitate, makes the cutting ability of excellence of alloy be achieved, and its content is 0.1～0.3%.
Iron, boron and rare earth metal mainly have been the effects of crystal grain thinning, stop growing up of crystal grain, and especially thulium is good alterant and grain-refining agent, and its total body burden is no more than 0.5%.
The invention has the advantages that, the alloy product crystal grain that obtains is tiny, has very excellent cutting ability, possesses good hot workability, good welding property and excellent corrosion resistant performance are specially adapted to other component material such as various component, forging, foundry goods of machining moulding; Its low cost of manufacture, the bismuth brass that its bismuth-containing amount is more simple is much lower, far below the manufacturing cost of no leaded brass under the prior art, and can make full use of the extremely abundant magnesium resource of China, the advantage of performance magnesium resource.
Embodiment
Embodiment 1
Form pressing alloying constituent described in the table 1, when melting, carry out the melting of copper zinc earlier, temperature is 1150 ℃～1250 ℃, adds bismuth subsequently, leaves standstill insulation after 10 minutes, add magnesium again, be incubated and cast after 20～40 minutes, pouring temperature is 1050 ℃～1100 ℃, forms unleaded magnesium-bismuth-brass alloys ingot casting, under 580 ℃ of temperature, push, be squeezed into the pole ingot casting that is of a size of Φ 200 * 600mm.Under 600 ℃ of temperature, heat-treated 30 minutes, cool off with≤100 ℃/hour speed of cooling, carry out finished products in the temperature that is lower than 400 ℃, make the wire rod of Φ 10mm, get product 1.
Comparative sample is to generally acknowledge the best C36000 alloy of machinability and home-made bismuth brass and merimee's yellow copper in the world.
The alloying constituent of table 1 leadless easy-cutting magnesium bismuth of the present invention brass is formed example (weight %)
| Alloying element | Cu | Mg | Bi | Ti | Zr | Fe | ?B | ?P | Si | RE | Zn | Other impurity summations |
| Content | 62.0 | 0.5 | 0.1 | 0.04 | 0.06 | 0.16 | 0.20 | 0.06 | 0.04 | 0.12 | Surplus | <0.25 |
Embodiment 2
Form pressing alloying constituent described in the table 2, unleaded magnesium-bismuth-brass alloys pushes under 700 ℃ of temperature, is squeezed into the pole ingot casting that is of a size of Φ 200 * 600mm.Under 400 ℃ of temperature, heat-treated 6 hours, cool off with≤100 ℃/hour speed of cooling, carry out finished products in the temperature that is lower than 400 ℃, make the wire rod of Φ 10mm, get product 2.
The alloying constituent of table 2 leadless easy-cutting magnesium bismuth of the present invention brass is formed example (weight %)
| Alloying element | Cu | Mg | Bi | Ti | Zr | Fe | ?B | ?P | Si | RE | Zn | Other impurity summations |
| Content | 50. 0 | 3.0 | 1.0 | 0.22 | 0.08 | 0.04 | 0.02 | 0.0005 | 0.0005 | 0.08 | Surplus | <0.25 |
Embodiment 3
Form pressing alloying constituent described in the table 3, unleaded magnesium-bismuth-brass alloys pushes under 640 ℃ of temperature, is squeezed into the pole ingot casting that is of a size of Φ 200 * 600mm.Under 500 ℃ of temperature, heat-treated 3 hours, cool off with≤100 ℃/hour speed of cooling, carry out finished products in the temperature that is lower than 400 ℃, make the wire rod of Φ 10mm, get product 3.
The alloying constituent of table 3 leadless easy-cutting magnesium bismuth of the present invention brass is formed example (weight %)
| Alloying element | Cu | Mg | Bi | Ti | Zr | Fe | ?B | ?P | Si | RE | Zn | Other impurity summations |
| Content | 56.0 | 2.0 | 0.36 | 0.02 | 0.08 | 0.10 | 0.10 | 0.03 | 0.01 | 0.10 | Surplus | <0.25 |
Embodiment 4
Form pressing alloying constituent described in the table 4, unleaded magnesium-bismuth-brass alloys pushes under 680 ℃ of temperature, is squeezed into the pole ingot casting that is of a size of Φ 200 * 600mm.Under 550 ℃ of temperature, heat-treated 3 hours, cool off with≤100 ℃/hour speed of cooling, carry out finished products in the temperature that is lower than 400 ℃, make the wire rod of Φ 10mm, get product 4.
The alloying constituent of table 4 leadless easy-cutting magnesium bismuth of the present invention brass is formed example (weight %)
| Alloying element | Cu | Mg | Bi | Zn | Other impurity summations |
| Content | 62.00 | 1.0 | 0.5 | Surplus | <0.25 |
Embodiment 5
Form pressing alloying constituent described in the table 5, unleaded magnesium-bismuth-brass alloys pushes under 640 ℃ of temperature, is squeezed into the pole ingot casting that is of a size of Φ 200 * 600mm.Under 500 ℃ of temperature, heat-treated 3 hours, cool off with≤100 ℃/hour speed of cooling, carry out finished products in the temperature that is lower than 400 ℃, make the wire rod of Φ 10mm, get product 5.
The alloying constituent of table 5 leadless easy-cutting magnesium bismuth of the present invention brass is formed example (weight %)
| Alloying element | Cu | Mg | Bi | ?P | Si | Ce | La | Zn | Other impurity summations |
| Content | 56.0 | 2.0 | 0.36 | 0.03 | 0.01 | 0.06 | 0.04 | Surplus | <0.25 |
The performance test of leadless easy-cutting magnesium bismuth brass of the present invention is as follows:
1, machinability test
The smear metal of leadless easy-cutting magnesium bismuth brass product 1 of the present invention is the short chip of tiny micro-arc shape, and the C36000 alloy is the long slightly straight chip of fine acicular, bismuth brass is the cutting of long arc shape, merimee's yellow copper is the little arc chip of fine acicular, the cutting ability (100%) of relative C36000 alloy, merimee's yellow copper is about 85%, and bismuth brass is about 75%, and magnesium bismuth brass of the present invention 〉=90%.
2, thermo compression test
Get magnesium-bismuth-brass alloys product 2 of the present invention, C36000 alloy, bismuth brass and merimee's yellow copper, (Φ 10 * 20mm), carry out the thermo compression test for same size, sample axially loads then 700 ℃ of heating 20 minutes, and deflection is 80%, length is decreased to 4mm, observes its surface condition.After the thermo compression test, tangible crackle appears in bismuth brass, small crackle appears in merimee's yellow copper, C36000 alloy and alloy of the present invention all be can't see tangible crackle, through examining under a microscope, find that the hair line of vertical loading direction only appears in C36000 alloy and alloy of the present invention at the compressing head afterbody, cause owing to contacting with the loading anchor clamps.As seen, the hot workability of easy-cutting lead-free magnesium-bismuth-brass alloys of the present invention is better than bismuth brass and antimony brass alloy, has improved greatly owing to add the relatively poor problem of alloy hot workability that bismuth and antimony cause separately.
3, test for tensile strength
Get magnesium-bismuth-brass alloys product 3 of the present invention, C36000 alloy, bismuth brass and merimee's yellow copper, make the standard tensile sample, carry out the normal temperature tension test.The result is as shown in table 6.
Table 6 leadless easy-cutting magnesium bismuth of the present invention brass and other tensile strength of alloys are relatively
| Alloy | Unit elongation (%) | Tensile strength (MPa) |
| Magnesium-bismuth-brass alloys 3 | 8 | 524 |
| C36000 | 7.5 | 520 |
| Bismuth brass | 6 | 529 |
| Merimee's yellow copper | 8 | 503 |
As can be known from Table 6, the intensity of bismuth brass is higher, but unit elongation is relatively poor, the unit elongation of merimee's yellow copper is better, but its tensile strength is on the low side, and the unit elongation of the unleaded magnesium-bismuth-brass alloys that the present invention developed and tensile strength all are higher than the C36000 alloy, and over-all properties is better.
4, conductivity test
Table 7 leadless easy-cutting magnesium bismuth of the present invention brass product 1 compares with the electric conductivity of other alloys
| Alloy | Electric conductivity (IACS%) |
| Magnesium bismuth brass 1 | 22 |
| C36000 | 24 |
| Bismuth brass | 16 |
| Merimee's yellow copper | 15 |
As can be seen from Table 7, the electric conductivity of lead-free free-cutting magnesium-bismuth-brass alloys of the present invention is near the C36000 alloy, and is higher than other two kinds of alloys.
Take all factors into consideration above test situation, lead-free free-cutting magnesium-bismuth-brass alloys of the present invention is compared with easy cutting Winn bronze of using always and unleaded bismuth brass, merimee's yellow copper, cutting scheme is different, but cutting ability and hot workability are better than above several alloy.
Lead-free free-cutting magnesium-bismuth-brass alloys of the present invention has been introduced the abundant magnesium of china natural resources from cost, greatly reduce the cost of alloy, lower more than 15% than bismuth-brass alloy approximately, low more about more than 5% than antimony brass alloy, hang down about 5% approximately than traditional lead brass alloy, therefore, lead-free free-cutting magnesium-bismuth-brass alloys of the present invention is a kind of a kind of novel leadless free-cutting brass alloy that market potential and application prospect are arranged very much.
Claims (7)
1. unleaded easy-cutting magnesium-bismuth-brass alloys, its composition is copper: 50～62 weight %, magnesium: 0.5～3.0 weight %, bismuth: 0.5～1.0 weight %, all the other are zinc and unavoidable impurities.
2. lead-free free-cutting magnesium-bismuth-brass alloys according to claim 1 is characterized in that: the copper in the described magnesium-bismuth-brass alloys, zinc total amount greater than 95 weight % less than 100 weight %.
3. lead-free free-cutting magnesium-bismuth-brass alloys according to claim 2 is characterized in that: also contain phosphorus and silicon that total amount is 0.001～0.1 weight % in the described magnesium-bismuth-brass alloys.
4. lead-free free-cutting magnesium-bismuth-brass alloys according to claim 3 is characterized in that: also contain zirconium and titanium that total amount is 0.1～0.3 weight % in the described magnesium-bismuth-brass alloys.
5. lead-free free-cutting magnesium-bismuth-brass alloys according to claim 4 is characterized in that: also contain iron, boron and rare earth metal that total amount is no more than 0.5 weight % in the described magnesium-bismuth-brass alloys.
6. lead-free free-cutting magnesium-bismuth-brass alloys according to claim 5 is characterized in that: the rare earth metal in the described magnesium-bismuth-brass alloys is the mixed of one of La-Ce or arbitrary proportion.
7. according to right 1 described lead-free free-cutting magnesium-bismuth-brass alloys, its manufacture method is, when melting, carry out the melting of copper zinc earlier, temperature is 1150 ℃～1250 ℃, add bismuth subsequently, leave standstill insulation after 10 minutes, add magnesium again, be incubated and cast after 20～40 minutes, pouring temperature is 1050 ℃～1100 ℃, form alloy cast ingot, this alloy cast ingot pushes under 580～700 ℃ of temperature, under 400～600 ℃ of temperature, heat-treated 30 minutes～6 hours, speed of cooling with≤100 ℃/hour is cooled off, and carries out finished products in the temperature that is lower than 400 ℃, makes finished product.
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| CN101994024B (en) * | 2009-08-28 | 2012-11-07 | 摩登岛股份有限公司 | Anti-dezincification copper alloy and preparation method of objects made of same |
| CN103757476A (en) * | 2014-01-10 | 2014-04-30 | 滁州学院 | Magnesium-bismuth brass alloy material and preparation method thereof |
| CN105821243B (en) * | 2016-06-08 | 2017-10-24 | 台州八达阀门有限公司 | A kind of Cu alloy material and its manufacture method for lead-free reflow ball valve assembly |
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| JP2003277855A (en) * | 2002-03-22 | 2003-10-02 | San-Etsu Metals Co Ltd | Lead-free, free-cutting brass alloy material and production method thereof |
| CN1557981A (en) * | 2004-01-15 | 2004-12-29 | 宁波博威集团有限公司 | Non-lead free cutting antimony yellow copper alloy |
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| JP2003277855A (en) * | 2002-03-22 | 2003-10-02 | San-Etsu Metals Co Ltd | Lead-free, free-cutting brass alloy material and production method thereof |
| CN1557981A (en) * | 2004-01-15 | 2004-12-29 | 宁波博威集团有限公司 | Non-lead free cutting antimony yellow copper alloy |
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| 黄劲松.无铅易切削镁黄铜的组织与性能.材料科学与工程学报第24卷 第6期.2006,第24卷(第6期),第855页. * |
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