CN101012521A - Environment-friendly type selenium-bismuth-brass alloy material - Google Patents
Environment-friendly type selenium-bismuth-brass alloy material Download PDFInfo
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- CN101012521A CN101012521A CN 200710048458 CN200710048458A CN101012521A CN 101012521 A CN101012521 A CN 101012521A CN 200710048458 CN200710048458 CN 200710048458 CN 200710048458 A CN200710048458 A CN 200710048458A CN 101012521 A CN101012521 A CN 101012521A
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- bismuth
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- selenium
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Abstract
The invention discloses an environment protective typed guanajuatite brass alloy, which comprises the following parts: 56.5-62% Cu, 36-40% Zn, 0.5-3% Bi, 0.01-0.05% Se and rare metal and inevitable impurity, wherein these raw materials are fused into kinds of element through cool and heat manufacturing course with drawing-proof strength (Rm) at 402-555Mpa, hardness (HB) at 114-149 and extending rate (delta 5) at 15-19.
Description
Affiliated technical field
The present invention relates to a kind of environment-friendly type yellow Cu alloy material, belong to the non-ferrous metal alloy field of metallurgy.
Background technology
The leaded brass material is because of its higher mechanical strength and the living energy of processing, widespread use every field in daily life.As appliance switch element, auto parts, instrument, gear, bearing, bearing shell, and various hot-water heating pipe fitting joints, valve member, air-conditioning fittings, five metals ornaments or the like.But because of the lead in the leaded brass material, cadmium are the toxic heavy metal element, very harmful to human body, can not adapt to environmental requirement in the daily life.All multinational more and more attention in environment protection such as European Union and North America in the last few years; successively issue " ROHS " instruction and " WEEE " instruction of strict heavy metal forbidding; also there are new rules in China to this; seven ministries and commissions such as the Committee of Development and Reform and the Ministry of Information Industry have issued " electronics and IT products pollution method of controlling "; forbid heavy metals such as plumbous cadmium, and come into force from March 1st, 2007.The research and development of novel lead-free environmental protection brass, production seem very important.
Summary of the invention
The objective of the invention is to use metallic elements such as harmless selenium, bismuth, existing brass alloys technology innovation is regenerated, make its requirement that meets environment protection health, it is characterized in that not leaded, cadmium, toxicological harmless, and have high strength, good machining property.Its ductility, rivet hot and cutting ability reach or are better than leaded brass.
The present invention seeks to realize (except that specifying, being weight ratio) by following technique means:
The Chemical Composition precentagewise of selenium-bismuth-brass alloy material is counted:
Cu56.5～62
Zn36～40
Bi0.5～3
Se0.01～0.05
Surplus is rare metal and unavoidable impurities.
Can adjust according to different its each component ratios of purposes.
Wherein: the purity of copper is 99.9%, and the purity of Zn is 99.99%, and the purity of Bi is 99.9%.The purity of selenium is 99.9%, and rare metal is a technical purity.
The preparation technology of this environmental protection selenium bismuth brass material is consistent with the ordinary method of the general copper alloy of preparation, its step comprises that fully material, master alloy preparation, batching, melting, ingot casting and cold and hot working make the product of required all kinds of specifications, also can be made into the blank of secondary cast.
The alloy material that adopts above-mentioned prescription and technology to make is learnt through Performance Detection and Analysis on Mechanism: Bi substitutes consanguinity lead in alloy, improved processing characteristics, selenium and the rare elements form with compound in alloy occurs, distribute mutually so that unbound state is isolated, further improved the cold and hot working performance and the conductivity of alloy material.
Selenium bismuth brass material physical and mechanical properties of the present invention is as follows:
1, tensile strength (Rm): 402～555Mpa
2, hardness (HB): 114～149
3, surrender degree (R+0.5Mpa): 540～590
4, unit elongation (δ 5): 15～19
The present invention has following advantage:
1, compare with existing leaded brass, this selenium bismuth brass material is not leaded, cadmium, toxicological harmless, and the selenium of trace is useful to HUMAN HEALTH, and bismuth is also useful to HUMAN HEALTH, in the stomach medicine, use in a large number, and environmentally safe, be environmentfriendly products.
2, the mechanical property of material and processing characteristics meet or exceed former leaded brass material, and good plasticity-and forgeability are arranged.
3, the each component in the material can change according to the service requirements adjustment, to adapt to the different purposes in all trades and professions field.
4, selenium bismuth brass material can substitute existing Winn bronze material comprehensively, is the novel environment friendly material on environment, HUMAN HEALTH.
Embodiment
Present embodiment is to implement in more forge hot, cold riveting and the high cutting field using in the present invention; be to be used for the present invention is further specified; can not be interpreted as the restriction to protection scope of the present invention, the Chemical Composition of selenium-bismuth-brass alloy material is made by following per-cent:
Cu56.5～62
Zn36～40
Bi0.5～3
Se0.01 ～0.05
Surplus is rare metal and unavoidable impurities.
Wherein: the purity of copper is 99.9%, and the purity of Zn is 99.99%, and the purity of Bi is 99.96.The purity of selenium is 99.9%, and rare metal is a technical purity.
The preparation technology of this environmental protection selenium bismuth brass material is consistent with the ordinary method of the general copper alloy of preparation, its step comprises that fully material, master alloy preparation, batching, melting, ingot casting and cold and hot working make the product of required all kinds of specifications, also can be made into the blank of secondary cast.
The purposes difference can adjust on the proportioning of each element under the constant situation of the present invention essence according to the present invention.
Embodiment:
Material purity:
Cu is No. 1 cathode copper, purity 99.9% industrial goods, Zn are No. 0 electric zinc purity 99.99% industrial goods, Bi, Se and rare elements are the general industry product, above component by get the raw materials ready, master alloy preparation, batching, founding become ingot blank.
Ingot blank can carry out following process with complete processing means such as existing hot extrude, cold-drawns and become various section bars, but also is used as precision casting after the remelting.Below be through hot extrusion, be cold drawing to hard attitude, three kinds of copper shank diameter φ 10,12,14 of half-hard state and soft attitude are by standard GB 4909.3 its main performance index of test see Table:
Main performance index of the present invention and Chemical Composition table
| Numbering | 1 | 2 | 3 | |
| Performance index | Tensile strength (Rm) | 402 | 463 | 555 |
| Hardness (HB) | 182 | 185 | 189 | |
| The surrender degree | 400 | 526 | 550 | |
| Unit elongation (δ 5) | 19 | 16 | 15 | |
| Chemical ingredients (%) | Cu | 59.5 | 59.5 | 59.5 |
| Zn | 39.18 | 39.18 | 39.18 | |
| Bi | 0.78 | 0.78 | 0.78 | |
| Se | 0.01 | 0.01 | 0.01 | |
| Harmful (%) element | Pb | 0.0032 | 0.0032 | 0.0032 |
| Cd | 0.0002 | 0.0002 | 0.0002 | |
Claims (3)
1. environment-friendly type selenium-bismuth-brass alloy material is characterized in that the Chemical Composition of this selenium-bismuth-brass alloy material being by weight percentage:
Cu 56～62
Zn 36～40
Bi 0.5～3
Se 0.01～0.05
Surplus is rare metal and unavoidable impurities.
2,, it is characterized in that Bi content is 0.5～3 in this material according to the described a kind of environment-friendly type selenium-bismuth-brass alloy material of claim 1; Se content is 0.01～0.05.
3, a kind of environment-friendly type selenium-bismuth-brass alloy material, it is characterized in that in the material lead content less than 0.0032%, cadmium is less than 0.0002%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710048458 CN101012521A (en) | 2007-02-12 | 2007-02-12 | Environment-friendly type selenium-bismuth-brass alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710048458 CN101012521A (en) | 2007-02-12 | 2007-02-12 | Environment-friendly type selenium-bismuth-brass alloy material |
Publications (1)
| Publication Number | Publication Date |
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| CN101012521A true CN101012521A (en) | 2007-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 200710048458 Pending CN101012521A (en) | 2007-02-12 | 2007-02-12 | Environment-friendly type selenium-bismuth-brass alloy material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440442B (en) * | 2007-11-22 | 2010-12-22 | 北京有色金属研究总院 | Leadless free-cutting bismuth brass alloy |
| CN102952966A (en) * | 2012-11-08 | 2013-03-06 | 中国核动力研究设计院 | Bismuth brass alloy material and preparation process and hot stamping process thereof |
| CN107208190A (en) * | 2015-12-17 | 2017-09-26 | 松下知识产权经营株式会社 | Fluid open and close valve and use its air conditioner |
-
2007
- 2007-02-12 CN CN 200710048458 patent/CN101012521A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440442B (en) * | 2007-11-22 | 2010-12-22 | 北京有色金属研究总院 | Leadless free-cutting bismuth brass alloy |
| CN102952966A (en) * | 2012-11-08 | 2013-03-06 | 中国核动力研究设计院 | Bismuth brass alloy material and preparation process and hot stamping process thereof |
| CN107208190A (en) * | 2015-12-17 | 2017-09-26 | 松下知识产权经营株式会社 | Fluid open and close valve and use its air conditioner |
| CN107208190B (en) * | 2015-12-17 | 2019-03-29 | 松下知识产权经营株式会社 | Fluid open and close valve and the air conditioner for using it |
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Addressee: Xu Zhonghua Document name: Notice of application for publication of patent for invention and entry into the substantive examination procedure |
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Open date: 20070808 |