CA2639301A1 - Lead-free free-cutting phosphorous brass alloy and its manufacturing method - Google Patents
Lead-free free-cutting phosphorous brass alloy and its manufacturing method Download PDFInfo
- Publication number
- CA2639301A1 CA2639301A1 CA002639301A CA2639301A CA2639301A1 CA 2639301 A1 CA2639301 A1 CA 2639301A1 CA 002639301 A CA002639301 A CA 002639301A CA 2639301 A CA2639301 A CA 2639301A CA 2639301 A1 CA2639301 A1 CA 2639301A1
- Authority
- CA
- Canada
- Prior art keywords
- free
- brass alloy
- lead
- cutting
- alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
Abstract
Considering the solid solubility of P in the matrix of copper will be decreased rapidly with the temperature decrease and form the brittle intermetallic compounds Cu3P with Cu, the present invention elects P as one of the main elements for ensuring the excellent cuttability of the invented alloy. The lead-free free-cutting phosphorous brass alloy comprises: Cu, Zn, 0.4 to 1.6wt% P, and other elements in the amount of 0.005 to 0.6wt%, which comprise at least two elements selected from the group consisting of Al, Si, Sb, Sn, Re, Ti and B, and the balance being unavoidable impurities. The phosphorous brass alloy contains a combined wt% of Cu and Zn of between 97.0wt% and 99.5wt%, within which the content of Zn is above 35wt%. The method of manufacturing the alloy is also disclosed. The invented alloy has excellent cuttability, castability, hot and cold workability, dezincification corrosion resistance, mechanical properties and weldability. The phosphorous brass alloy is applicable in spare parts, forging and castings that require cutting, and particularly in forging and castings for low pressure die casting that requires cutting, grinding, welding and electroplating. The phosphorous brass alloy may be used for faucets, valves and bushings of water supply systems, and for bar and wire materials that require high corrosion resistance and compactness.
Claims (9)
1. A lead-free free-cutting phosphorous brass alloy comprising: zinc, in an amount exceeding 35wt%; copper, in an amount such that the amount of zinc and copper totals between 97.0wt% and 99.5wt%; 0.4 to 1.6wt% P; and other elements in an amount between 0.005 and 0.6wt%, which comprise at least two elements selected from the group consisting of Al, Si, Sb, Sn, Re, Ti and B; and the balance being unavoidable impurities.
2. The lead-free free-cutting phosphorous brass alloy of claim 1, wherein the amount of P is between 0.5 and 1.35wt%.
3. The lead-free free-cutting phosphorous brass alloy of claim 2, wherein the amount of P is between 0.5 and 0.8wt%.
4. The lead-free free-cutting phosphorous brass alloy of claim 1, wherein the other elements are selected from the group consisting of Al, Si, Sb, Ti or B.
5. The lead-free free-cutting phosphorous brass alloy of claim 1, wherein Pb and Fe as the unavoidable impurities, the content of Pb is less than 0.02wt% and the content of Fe is less than 0.05wt%.
6. A manufacturing method of the lead-free free-cutting phosphorous brass alloy of claim 1, wherein when the melt of the invented alloy reaches a temperature of to 1000 degrees Celsius, the melt is poured into ingot molds to form ingots for further processing.
7. A manufacturing method of the lead-free free-cutting phosphorous brass alloy of claim 1, wherein the ingots are extruded at a temperature among 550 to 700 degrees Celsius for about 1 hour with an elongation coefficient of greater than 30.
8. A manufacturing method of the lead-free free-cutting phosphorous brass alloy of claim 1, wherein the ingots are forged at a temperature among 570 to 680 degrees Celsius.
9. A manufacturing method of the lead-free free-cutting phosphorous brass alloy of claim 1, wherein the ingots are remelted and cast at a temperature among 980 to 1010 degrees Celsius at a pressure of 0.3 to 0.5 Mpa.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810110819.8 | 2008-06-11 | ||
| CN2008101108198A CN101285138B (en) | 2008-06-11 | 2008-06-11 | Leadless and free-cutting phosphorus-brass alloy and manufacturing method thereof |
| US20811708A | 2008-09-10 | 2008-09-10 | |
| US12/208,117 | 2008-09-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2639301A1 true CA2639301A1 (en) | 2008-12-09 |
| CA2639301C CA2639301C (en) | 2010-01-26 |
Family
ID=40057550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2639301A Expired - Fee Related CA2639301C (en) | 2008-06-11 | 2008-09-30 | Lead-free free-cutting phosphorous brass alloy and its manufacturing method |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20090311126A1 (en) |
| EP (1) | EP2133438B1 (en) |
| CN (1) | CN101285138B (en) |
| AT (1) | ATE547541T1 (en) |
| CA (1) | CA2639301C (en) |
| PL (1) | PL2133438T3 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942582A (en) * | 2009-07-10 | 2011-01-12 | 摩登岛股份有限公司 | Low lead brass alloy and preparation method of product thereof |
| TWI398532B (en) | 2010-01-22 | 2013-06-11 | Modern Islands Co Ltd | Lead-free brass alloy |
| CN102477495B (en) * | 2010-11-27 | 2015-11-18 | 湖南特力新材料有限公司 | A kind of unleaded preparation method without bismuth free-cutting brass |
| CN102978435A (en) * | 2011-09-02 | 2013-03-20 | 摩登岛股份有限公司 | Environmentally friendly brass alloy |
| US8721765B2 (en) * | 2011-11-14 | 2014-05-13 | Mueller Industries, Inc. | Lead free dezincification alloy and method of making same |
| CN104831117B (en) * | 2013-11-04 | 2016-11-30 | 吴丽清 | A kind of method preparing Copper Alloy Valve |
| CN105950905B (en) * | 2015-10-16 | 2018-11-02 | 九牧厨卫股份有限公司 | A kind of high zinc silicon brass alloy of low lead and preparation method thereof |
| CN105603250B (en) * | 2016-03-28 | 2017-05-03 | 上海理工大学 | Seawater corrosion-resistant copper alloy and preparation method thereof |
| CN109439957B (en) * | 2018-11-29 | 2022-10-04 | 路达(厦门)工业有限公司 | Low-cost brass alloy with excellent hot forging performance and manufacturing method thereof |
| CN109266900A (en) * | 2018-12-07 | 2019-01-25 | 宁波艾维洁具有限公司 | A kind of Anti-dezincificationyellow yellow brass alloy of lead-free corrosion resistant and preparation method thereof |
| CN110938761B (en) * | 2019-12-31 | 2022-08-09 | 九牧厨卫股份有限公司 | Low-lead free-cutting magnesium brass alloy and preparation method thereof |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2149103A (en) * | 1936-12-07 | 1939-02-28 | Gen Electric | Hard solder |
| US2215459A (en) * | 1938-10-06 | 1940-09-24 | Robert H Canfield | Carbon-free alloy |
| US2255204A (en) * | 1940-09-28 | 1941-09-09 | New Jersey Zinc Co | Metal powder |
| GB1011988A (en) | 1963-03-14 | 1965-12-01 | Slumberland Group Ltd | Wire bending machine |
| US3773504A (en) * | 1970-12-28 | 1973-11-20 | I Niimi | Copper base alloy having wear resistance at high temperatures |
| DE2353238C2 (en) * | 1973-10-24 | 1975-09-11 | Wieland-Werke Ag, 7900 Ulm | Use of a phosphorus-containing brass alloy |
| JPS5744491A (en) * | 1980-08-29 | 1982-03-12 | Yaskawa Electric Mfg Co Ltd | Phosphor copper braze |
| US4826736A (en) * | 1985-06-14 | 1989-05-02 | Sumitomo Special Metals Co., Ltd. | Clad sheets |
| JPH09143598A (en) * | 1995-11-22 | 1997-06-03 | Chuetsu Gokin Chuko Kk | Brass alloy material for heating device |
| US6419766B1 (en) * | 1996-04-02 | 2002-07-16 | Tabuchi Corp. | Cutting-free bronze alloys |
| US6695934B1 (en) * | 1997-09-16 | 2004-02-24 | Waterbury Rolling Mills, Inc. | Copper alloy and process for obtaining same |
| US8506730B2 (en) * | 1998-10-09 | 2013-08-13 | Mitsubishi Shindoh Co., Ltd. | Copper/zinc alloys having low levels of lead and good machinability |
| JP3761741B2 (en) * | 1999-05-07 | 2006-03-29 | 株式会社キッツ | Brass and this brass product |
| JP2001064742A (en) * | 1999-06-24 | 2001-03-13 | Chuetsu Metal Works Co Ltd | Brass alloy excellent in corrosion resistance, mechinability and hot workability |
| US20020110478A1 (en) * | 1999-12-13 | 2002-08-15 | Lawrence Benjamin L. | Copper base alloy that contains intermetallic constituents rich in calcium and/or magnesium |
| JP4294196B2 (en) * | 2000-04-14 | 2009-07-08 | Ｄｏｗａメタルテック株式会社 | Copper alloy for connector and manufacturing method thereof |
| JP4729680B2 (en) * | 2000-12-18 | 2011-07-20 | Ｄｏｗａメタルテック株式会社 | Copper-based alloy with excellent press punchability |
| JP2004244672A (en) * | 2003-02-13 | 2004-09-02 | Dowa Mining Co Ltd | Copper-base alloy with excellent dezincification resistance |
| DE10308779B8 (en) * | 2003-02-28 | 2012-07-05 | Wieland-Werke Ag | Lead-free copper alloy and its use |
| CN1291051C (en) | 2004-01-15 | 2006-12-20 | 宁波博威集团有限公司 | Non-lead free cutting antimony yellow copper alloy |
| CN101098976B (en) * | 2005-09-22 | 2014-08-13 | 三菱伸铜株式会社 | Free-cutting copper alloy containing very low lead |
-
2008
- 2008-06-11 CN CN2008101108198A patent/CN101285138B/en active Active
- 2008-09-29 EP EP08017101A patent/EP2133438B1/en active Active
- 2008-09-29 PL PL08017101T patent/PL2133438T3/en unknown
- 2008-09-29 AT AT08017101T patent/ATE547541T1/en active
- 2008-09-30 CA CA2639301A patent/CA2639301C/en not_active Expired - Fee Related
-
2009
- 2009-01-15 US US12/354,569 patent/US20090311126A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CA2639301C (en) | 2010-01-26 |
| ATE547541T1 (en) | 2012-03-15 |
| CN101285138B (en) | 2010-09-08 |
| EP2133438A1 (en) | 2009-12-16 |
| US20090311126A1 (en) | 2009-12-17 |
| CN101285138A (en) | 2008-10-15 |
| EP2133438B1 (en) | 2012-02-29 |
| PL2133438T3 (en) | 2012-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20211001 |