CN102400011A - Low-lead anti-corrosion forging yellow brass alloy and manufacturing method thereof - Google Patents
Low-lead anti-corrosion forging yellow brass alloy and manufacturing method thereof Download PDFInfo
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- CN102400011A CN102400011A CN201110389780XA CN201110389780A CN102400011A CN 102400011 A CN102400011 A CN 102400011A CN 201110389780X A CN201110389780X A CN 201110389780XA CN 201110389780 A CN201110389780 A CN 201110389780A CN 102400011 A CN102400011 A CN 102400011A
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Abstract
The invention discloses a low-lead anti-corrosion forging yellow brass alloy and a manufacturing method thereof. The yellow brass alloy comprises the following components in percentage by weight: 60.0 to 62.5 percent of copper, less than or equal to 0.2 percent of lead, less than or equal to 0.2 percent of aluminum, 0.35 to 0.55 percent of bismuth, 0.15 to 0.22 percent of arsenic and the balance of zinc and inevitable impurities. The yellow brass alloy has high corrosion resistance, the concentration of the yellow brass alloy is 1 percent under the condition of eliminating assembly stress without annealing, and the dezincification depth is less than 100 micrometers under the 24-hour corrosion of copper chloride. The yellow brass alloy has high using performance (corrosion resistance, a mechanical property and the like) and high process performance (cold and hot formability, cutting performance, welding performance and the like), and is suitable for all water heating and bathroom parts and equipment for forging and machining production in water heating and bathroom industries.
Description
Technical field
The present invention relates to a kind of forging with low plumbous corrosion resistant brass alloy and method of manufacture thereof, relate in particular to and be used in hot-water heating, the bathroom industry to forge or direct low-lead brass alloy pipe, the bar used of various hot-water heatings, bathroom component and the equipment produced of machining.
Background technology
Leaded brass is owing to have good cutting performance, excellent corrosion resisting performance and less cost, and oneself is widely used in making in the waterworks parts such as tap, multiple valve.But since leaded brass produce and use in pollute the environment, and plumbous in water, being easy to leach, long-term drinking contains plumbous tap water with the serious harm HUMAN HEALTH, so its application receives strict control.Governments such as America and Japan Europe have made laws, and will progressively in the drinking water pipeline accessory, ban use of products containing lead, and lead content can not surpass 5 μ g/L in the U.S. NSF/ANSI61-2008 drinking water standard regulation water.
Present existing research be through with bismuth for plumbous, with antimony for plumbous, improve the cutting ability of copper alloy with silicon for lead, and add a certain amount of tin or nickel improves corrosion resistance of alloy.
Wherein, the cutting ability of bismuth brass has been added the bismuth of high level near leaded brass in the existing bismuth brass; Make the cutting ability and the leaded brass of alloy close, add the tin of high level simultaneously, improve the corrosion resistance nature of alloy; Like the disclosed bismuth one-ton brass of CN1906317A, but because the price of bismuth and tin is all more expensive, so the raw materials cost of bismuth brass is higher; And the corrosion resistance of tin is limited, can't be 1%, 24 hour cupric chloride Dezincification corrosion resistant PT through concentration.
Summary of the invention
The object of the present invention is to provide a kind of forging with low plumbous corrosion resistant brass alloy and method of manufacture thereof.
The technical scheme that the present invention taked is:
A kind of forging is with low plumbous corrosion resistant brass alloy; Comprise copper, lead, aluminium, bismuth, arsenic, the composition of each component is respectively by weight percentage: copper 60.0～62.5%, and lead is not more than 0.2%; Aluminium is not more than 0.2%; Bismuth 0.35～0.55%, arsenic 0.15～0.22%, surplus is zinc and unavoidable impurities.
Above-mentioned a kind of method of manufacture of forging with low plumbous corrosion resistant brass alloy comprises batching, melting, horizontal casting rod, strips off the skin and heats forged, and the temperature of wherein said horizontal casting is 990～1060 ℃, and the temperature of said heats forged is 650～760 ℃.
Above-mentioned a kind of method of manufacture of forging with low plumbous corrosion resistant brass alloy; Comprise batching, melting, horizontal casting billet, extruding and heats forged; The temperature of wherein said horizontal casting is 990～1060 ℃; The temperature of said extruding is 650～760 ℃, and the temperature of said heats forged is 650～760 ℃.
Beneficial effect of the present invention:
Brass alloys of the present invention are to be that the basis adds principal elements such as zinc, lead, bismuth, arsenic with copper; And strict control impurity composition produces; Have good use properties (corrosion resisting property, mechanical property etc.) and use characteristics (cold and hot processability, cutting ability, welding property etc.), be applicable to be used in hot-water heating, the bathroom industry to forge, various hot-water heatings, bathroom component and equipment that Vehicle Processing is produced.
Brass alloys of the present invention have excellent corrosion resisting property, under the situation of unannealed elimination assembly stress, concentration be 1%, 24 hour the cupric chloride corrosion down, the dezincify degree of depth is less than 100 μ m.
Do not add nickel, iron, manganese in the brass alloys of the present invention, and the content of bismuth, tin is low, thereby, compare the alloy raw material cost with high silicon brass of low zinc (CN1969050A) and bismuth one-ton brass (CN1906317A) and obviously reduce.
Poisonous elements such as the not leaded or antimony of brass alloys of the present invention are the environment-friendly type alloys, and low to the harm of human body and environment, stripping quantity meets the NSF/ANSI61-2008 standard in water.
Description of drawings
Figure l is the forged process flow sheets of brass alloys of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail.
Embodiment
Brass alloys composition of the present invention reaches as the alloying constituent of comparative study and lists in table l, and wherein, alloy 1～2 is used for the horizontal casting ingot; Be squeezed into hot-forging forming behind the bar; Preparation technology is shown in figure l, and batching, melting, horizontal casting billet, extruding and heats forged, the temperature of wherein said horizontal casting are 990～1060 ℃; The temperature of said extruding is 650～760 ℃, and the temperature of said heats forged is 650～760 ℃.
Alloy 3～7 is used for horizontal casting rod hot-forging forming, and preparation technology batching, melting, horizontal casting rod, strips off the skin and heats forged shown in figure l, and the temperature of wherein said horizontal casting is 990～1060 ℃, and the temperature of said heats forged is 650～760 ℃.
Alloy ZCuZn
40Pb
2, C3600 is comparative alloy.
Below will carry out Performance Detection to above-mentioned alloy 1～4 and comparative alloy, concrete performance test results is following:
1. forgeability
Cut the sample of length (highly) 35mm from the horizontal casting rod of ￠ 30mm, forge hot distortion under 680 ℃, 750 ℃ temperature, and adopt following jumping-up rate, observe situation about cracking, his-and-hers watches l interalloy 1～4 and comparative alloy ZCuZn
40Pb
2, C3600 the heat forged performance estimate.
Jumping-up rate (%)=[(35-h)/35] * l00% (h is the height of sample behind the hot upsetting)
The forging specimen surface is bright and clean, and is glossy, do not have obvious crackle, then is excellent, with " ● " expression; The surface is more coarse, does not have obvious crackle then for good, with " ▲ " expression; The visual crackle of naked eyes is arranged then for poor, with " * " expression.The result is as shown in table 2.
Can know by table 2, under same forging temperature, a little higher than alloy C3600 of the jumping-up rate of alloy 1～4 and ZCuZn
40Pb
2, the heat forged performance is more excellent.
3. mechanical property
Alloy 1～4 is an as cast condition, by horizontal casting ￠ 30mm rod machine addition ￠ 10mm sample, carries out tension test in room temperature, and control sample is the Winn bronze ZCuZn with the state same specification
40Pb
2, the result sees table 3.
4. anti-Dezincification corrosion performance
The dezincify test is carried out according to GB/T 10 119-2008, and concentration is 1% cupric chloride, and the time is 24 hours; Comparison sample is ZCuZn
40Pb
2Winn bronze, sample is for forging attitude.The maximum Dezincification corrosion degree of depth that records is as shown in table 3.
Can be known that by table 3 alloy of the present invention has excellent anti-Dezincification corrosion performance, the dezincify layer depth is all less than 100 μ m, far below lead bronze ZCuZn is arranged
40Pb
2The dezincify layer depth of alloy, tensile strength, unit elongation and hardness and ZCuZn
40Pb
2Alloy phase is worked as.
Claims (3)
1. a forging is with low plumbous corrosion resistant brass alloy; Comprise copper, lead, aluminium, bismuth, arsenic, the composition of each component is respectively by weight percentage: copper 60.0～62.5%, and lead is not more than 0.2%; Aluminium is not more than 0.2%; Bismuth 0.35～0.55%, arsenic 0.15～0.22%, surplus is zinc and unavoidable impurities.
2. described a kind of forging of claim 1 used the method for manufacture of hanging down plumbous corrosion resistant brass alloy; Comprise batching, melting, horizontal casting rod, strip off the skin and heats forged; The temperature of wherein said horizontal casting is 990～1060 ℃, and the temperature of said heats forged is 650～760 ℃.
3. described a kind of forging of claim 1 used the method for manufacture of hanging down plumbous corrosion resistant brass alloy; Comprise batching, melting, horizontal casting billet, extruding and heats forged; The temperature of wherein said horizontal casting is 990～1060 ℃; The temperature of said extruding is 650～760 ℃, and the temperature of said heats forged is 650～760 ℃.
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| CN201110389780XA CN102400011A (en) | 2011-11-30 | 2011-11-30 | Low-lead anti-corrosion forging yellow brass alloy and manufacturing method thereof |
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| CN201110389780XA CN102400011A (en) | 2011-11-30 | 2011-11-30 | Low-lead anti-corrosion forging yellow brass alloy and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451470A (en) * | 2013-09-22 | 2013-12-18 | 付亚波 | Dezincification-corrosion-resistant environment-friendly nano material brass alloy and preparing method thereof |
| CN110421104A (en) * | 2019-08-13 | 2019-11-08 | 浙江万得凯流体设备科技股份有限公司 | A kind of forging technology of unleaded low-lead brass alloy blank |
| CN114622111A (en) * | 2020-12-10 | 2022-06-14 | 北京有色金属与稀土应用研究所 | Bonding wiring material and preparation and processing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225487A (en) * | 2008-01-15 | 2008-07-23 | 胡旭红 | Arsenic-containing low-lead brass alloy |
| CN101440442A (en) * | 2007-11-22 | 2009-05-27 | 北京有色金属研究总院 | Leadless free-cutting bismuth brass alloy |
| CN101876012A (en) * | 2009-12-09 | 2010-11-03 | 路达(厦门)工业有限公司 | Brass alloy with excellent stress corrosion resistance and manufacture method thereof |
-
2011
- 2011-11-30 CN CN201110389780XA patent/CN102400011A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440442A (en) * | 2007-11-22 | 2009-05-27 | 北京有色金属研究总院 | Leadless free-cutting bismuth brass alloy |
| CN101225487A (en) * | 2008-01-15 | 2008-07-23 | 胡旭红 | Arsenic-containing low-lead brass alloy |
| CN101876012A (en) * | 2009-12-09 | 2010-11-03 | 路达(厦门)工业有限公司 | Brass alloy with excellent stress corrosion resistance and manufacture method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451470A (en) * | 2013-09-22 | 2013-12-18 | 付亚波 | Dezincification-corrosion-resistant environment-friendly nano material brass alloy and preparing method thereof |
| CN103451470B (en) * | 2013-09-22 | 2015-07-08 | 付亚波 | Dezincification-corrosion-resistant environment-friendly nano material brass alloy and preparing method thereof |
| CN110421104A (en) * | 2019-08-13 | 2019-11-08 | 浙江万得凯流体设备科技股份有限公司 | A kind of forging technology of unleaded low-lead brass alloy blank |
| CN110421104B (en) * | 2019-08-13 | 2020-05-15 | 浙江万得凯流体设备科技股份有限公司 | Forging process of lead-free low-lead brass alloy blank |
| CN114622111A (en) * | 2020-12-10 | 2022-06-14 | 北京有色金属与稀土应用研究所 | Bonding wiring material and preparation and processing method thereof |
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Application publication date: 20120404 |