EP0982410A1 - Aluminium alloy with good machinability - Google Patents
Aluminium alloy with good machinability Download PDFInfo
- Publication number
- EP0982410A1 EP0982410A1 EP99121526A EP99121526A EP0982410A1 EP 0982410 A1 EP0982410 A1 EP 0982410A1 EP 99121526 A EP99121526 A EP 99121526A EP 99121526 A EP99121526 A EP 99121526A EP 0982410 A1 EP0982410 A1 EP 0982410A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aluminum alloy
- max
- alloy
- mpa
- alloy according
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/003—Alloys based on aluminium containing at least 2.6% of one or more of the elements: tin, lead, antimony, bismuth, cadmium, and titanium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
Definitions
- the invention relates to an aluminum alloy according to the Preamble of claim 1.
- Wrought alloys suitable as machine materials on the Basis AlCu and AlMgSi contain as a chip-breaking additive Lead, possibly in combination with bismuth. Alloys of this type are designated according to EN 573: 1994 as follows: EN AW-AlCu6BiPb, possibly EN AW-AlCu6BiPb (A) and EN AW-AlMg1SiPb, EN AW-AlMg1SiPbMn, possibly EN AW-AlMgSiPb.
- the inventor has the Task, a suitable as a machine material, to provide lead-free aluminum alloy with good machinability, compared to conventional machine materials comparable or better mechanical properties having.
- the preferred range lies in the alloy according to the invention for bismuth at 0.4 to 0.9, especially 0.6 to 0.8 % By weight, the preferred range for tin at 0.3 to 0.6, in particular 0.4 to 0.6% by weight.
- the alloy according to the invention can in a known manner semi-continuous casting and extrusion processed become. Usually they become semi-continuous continuously cast ingots subjected to an annealing; however, this can also be omitted. Extruded products are then by heat treatment or thermomechanical processing in various final states transferred.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Extrusion Of Metal (AREA)
- Conductive Materials (AREA)
- Continuous Casting (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Forging (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Soft Magnetic Materials (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Lubricants (AREA)
- Parts Printed On Printed Circuit Boards (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
Die Erfindung betrifft eine Aluminiumlegierung nach dem Oberbegriff von Anspruch 1.The invention relates to an aluminum alloy according to the Preamble of claim 1.
Als Automatenwerkstoffe geeignete Knetlegierungen auf der Basis AlCu und AlMgSi enthalten als spanbrechenden Zusatz Blei, ggf. in Kombination mit Wismut. Derartige Legierungen werden gemäss EN 573:1994 wie folgt bezeichnet: EN AW-AlCu6BiPb, ggf. EN AW-AlCu6BiPb(A) und EN AW-AlMg1SiPb, EN AW-AlMg1SiPbMn, ggf. EN AW-AlMgSiPb.Wrought alloys suitable as machine materials on the Basis AlCu and AlMgSi contain as a chip-breaking additive Lead, possibly in combination with bismuth. Alloys of this type are designated according to EN 573: 1994 as follows: EN AW-AlCu6BiPb, possibly EN AW-AlCu6BiPb (A) and EN AW-AlMg1SiPb, EN AW-AlMg1SiPbMn, possibly EN AW-AlMgSiPb.
Wegen der gesundsheitsschädlichen Wirkung von Blei ist man derzeit bemüht, dessen Anwendung in der Industrie auf ein Minimum zu beschränken. Hinzu kommt, dass bereits die Anwesenheit kleiner Bleimengen in einer Aluminium-Knetlegierung zu einer Erhöhung der Spannungsrissanfälligkeit unter Dauerbelastung bei Raumtemperatur führt.Because of the harmful effects of lead one is currently striving to apply it to an industry To limit minimum. Add to that the presence already small amounts of lead in a wrought aluminum alloy to an increase in susceptibility to stress cracking under permanent load leads at room temperature.
Angesichts dieser Gegebenheiten hat sich der Erfinder die Aufgabe gestellt, eine als Automatenwerkstoff geeignete, bleifreie Aluminiumlegierung mit guter Spanbarkeit bereitzustellen, die gegenüber herkömmlichen Automatenwerkstoffen vergleichbare oder bessere mechanische Eigenschaften aufweist.In view of these circumstances, the inventor has the Task, a suitable as a machine material, to provide lead-free aluminum alloy with good machinability, compared to conventional machine materials comparable or better mechanical properties having.
Zur erfindungsgemässen Lösung der Aufgabe führt eine Legierung mit den Merkmalen von Anspruch 1.An alloy leads to the achievement of the object according to the invention with the features of claim 1.
Bei der erfindungsgemässen Legierung liegt der Vorzugsbereich für Wismut bei 0,4 bis 0,9, insbesondere 0,6 bis 0,8 Gew.-%, der Vorzugsbereich für Zinn bei 0,3 bis 0,6, insbesondere 0,4 bis 0,6 Gew.-%.The preferred range lies in the alloy according to the invention for bismuth at 0.4 to 0.9, especially 0.6 to 0.8 % By weight, the preferred range for tin at 0.3 to 0.6, in particular 0.4 to 0.6% by weight.
Die erfindungsgemässe Legierung kann in bekannter Art durch halbkontinuierliches Stranggiessen und Strangpressen verarbeitet werden. Ueblicherweise werden die halbkontinuierlich stranggegossenen Barren einer Hochglühung unterworfen; diese kann jedoch auch entfallen. Die stranggepressten Erzeugnisse werden sodann durch eine Wärmebehandlung oder thermomechanische Verarbeitung in verschiedene Endzustände überführt.The alloy according to the invention can in a known manner semi-continuous casting and extrusion processed become. Usually they become semi-continuous continuously cast ingots subjected to an annealing; however, this can also be omitted. Extruded products are then by heat treatment or thermomechanical processing in various final states transferred.
Für die erfindungsgemässe Legierung eignen sich zur Erzielung unterschiedlicher Auslagerungszustände die folgenden Wärmebehandlungsverfahren:
- Lösungsglühen mit nachfolgender Warmaushärtung
- Lösungsglühen, Abbau innerer Spannungen durch Recken, nachfolgende Warmaushärtung
- Lösungsglühen, Kaltverformung mit nachfolgender Kaltaushärtung während mindestens drei Tagen
- Solution annealing with subsequent heat curing
- Solution annealing, reduction of internal stresses by stretching, subsequent heat curing
- Solution annealing, cold working with subsequent cold curing for at least three days
Die Erfindung wird nachstehend anhand von Ausführungsbeispielen näher erläutert.The invention is described below using exemplary embodiments explained in more detail.
In einem Tiegelwiderstandsofen wurden drei Legierungen mit einer Zusammensetzung gemäss Tabelle 1 aus Aluminium 99,5, einer Vorlegierung AlCu 45, Zinn 99,95 und Wismut 99,9 erschmolzen. Aus jeder Schmelzcharge wurden durch halbkontinuierliches Stranggiessen mittels einer wassergekühlten Kokille aus einer Aluminiumlegierung unter Anwendung eines Schmiermittels Bolzen mit einem Durchmesser von 135 mm abgegossen. Nach dem Abdrehen auf einen Durchmesser von 110 mm wurde ein Teil der Bolzen hochgeglüht, ein anderer Teil wurde ohne Hochglühung im Gusszustand belassen. Nach Anwärmung auf Strangpresstemperatur in einem Durchlaufinduktionsofen wurden die Bolzen zu Stangen mit einem Durchmesser von 36 mm sowie zu Sechskantprofilen stranggepresst.Three alloys were used in a crucible resistance furnace a composition according to Table 1 made of aluminum 99.5, a master alloy AlCu 45, tin 99.95 and bismuth 99.9 melted. Each batch of melt was made semi-continuous Continuous casting using a water-cooled Aluminum alloy mold using a Lubricant casted bolts with a diameter of 135 mm. After turning to a diameter of 110 mm part of the bolts was annealed, another part was Leave in the as-cast state without superheating. After warming up to extrusion temperature in a continuous induction furnace the bolts became rods with a diameter of 36 mm as well as extruded into hexagonal profiles.
Die auf diese Weise hergestellten Strangpresserzeugnisse
wurden durch unterschiedliche Wärmebehandlungen auf die
gewünschten Endzustände verarbeitet. Die mit den verschiedenen
Wärmebehandlungsverfahren erzeugten Endzustände und
die mechanischen Eigenschaften der erfindungsgemässen Legierung
sind in Tabelle 2 zusammengestellt.
Die in Tabelle 2 verwendeten Kurzbezeichnungen bedeuten:
- EN 515
- Europäische Norm EN 515: 1993 Aluminium und Aluminiumlegierungen-Halbzeug-Bezeichnung der Werkstoffzustände
- Rp 0,2
- Streckgrenze
- Rm
- Zugfestigkeit
- A5
- Bruchdehnung
- HB
- Brinellhärte
- EN 515
- European standard EN 515: 1993 aluminum and aluminum alloy semi-finished product description of the material states
- Rp 0.2
- Stretch limit
- Rm
- tensile strenght
- A5
- Elongation at break
- HB
- Brinell hardness
Claims (6)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CZ262896 | 1996-09-09 | ||
CZ19962628A CZ286150B6 (en) | 1996-09-09 | 1996-09-09 | Aluminium alloy with excellent machinability |
EP97810609A EP0828008B1 (en) | 1996-09-09 | 1997-08-28 | Aluminium alloy with good machinability |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97810609A Division EP0828008B1 (en) | 1996-09-09 | 1997-08-28 | Aluminium alloy with good machinability |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0982410A1 true EP0982410A1 (en) | 2000-03-01 |
Family
ID=5465300
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97810609A Revoked EP0828008B1 (en) | 1996-09-09 | 1997-08-28 | Aluminium alloy with good machinability |
EP99121526A Withdrawn EP0982410A1 (en) | 1996-09-09 | 1997-08-28 | Aluminium alloy with good machinability |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97810609A Revoked EP0828008B1 (en) | 1996-09-09 | 1997-08-28 | Aluminium alloy with good machinability |
Country Status (7)
Country | Link |
---|---|
EP (2) | EP0828008B1 (en) |
AT (1) | ATE194393T1 (en) |
CZ (1) | CZ286150B6 (en) |
DE (1) | DE59701965D1 (en) |
HU (1) | HUP9701466A3 (en) |
PL (1) | PL183835B1 (en) |
SI (1) | SI9700232A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004033740A1 (en) * | 2002-10-09 | 2004-04-22 | Showa Denko K.K. | Aluminum alloy for cutting processing, and aluminum alloy worked article made of the same |
US6780375B2 (en) | 2002-04-25 | 2004-08-24 | The Furukawa Electric Co., Ltd. | Aluminum alloy with good cuttability, method for producing a forged article, and forged article |
WO2005038278A1 (en) * | 2003-09-20 | 2005-04-28 | Ks Gleitlager Gmbh | Plain bearing composite material |
DE102007049531B3 (en) * | 2007-10-15 | 2009-05-07 | Willy Kreutz Gmbh & Co. Kg | Method for producing a contact pin for a fluorescent tube |
CN101363091B (en) * | 2008-09-08 | 2010-06-02 | 营口华润有色金属制造有限公司 | High-silicon aluminum alloy and method for preparing same |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0964070A1 (en) * | 1998-06-12 | 1999-12-15 | Alusuisse Technology & Management AG | Lead free Aluminium alloy based on AlCuMg with good machinability |
SI20122A (en) * | 1998-12-22 | 2000-06-30 | Impol, Industrija Metalnih Polizdelkov, D.D. | Aluminium casting-automate alloy, process for its production and application |
CN101709444B (en) * | 2009-12-18 | 2011-03-16 | 中国铝业股份有限公司 | Thermal treatment method for lead-free aluminum alloy |
ES2549135T3 (en) * | 2012-05-15 | 2015-10-23 | Constellium Extrusions Decin S.R.O. | Improved forging aluminum alloy product for the palletizing and manufacturing process |
CN111394601B (en) * | 2020-03-25 | 2021-05-25 | 广东领胜新材料科技有限公司 | Casting method of large-size lead-free-cutting aluminum alloy cast rod |
CN112410692A (en) * | 2020-11-28 | 2021-02-26 | 四川航天长征装备制造有限公司 | 2219 aluminum alloy grain refining process |
CN113578997B (en) * | 2021-08-03 | 2024-02-02 | 南京超明精密合金材料有限公司 | Processing technology of super-easy-cutting precision alloy rod wire |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0285331A (en) * | 1988-09-19 | 1990-03-26 | Furukawa Alum Co Ltd | Aluminum alloy having excellent cross feed machinability and its manufacture |
JPH0339442A (en) * | 1989-07-06 | 1991-02-20 | Furukawa Alum Co Ltd | Aluminum free cutting alloy for hot forging |
JPH07197165A (en) * | 1993-12-28 | 1995-08-01 | Furukawa Electric Co Ltd:The | High wear resistant free cutting aluminum alloy and its production |
WO1996013617A1 (en) * | 1994-10-27 | 1996-05-09 | Reynolds Metals Company | Machineable aluminum alloys containing in and sn and process for producing the same |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2155322A1 (en) * | 1971-11-08 | 1973-05-17 | Schreiber Gmbh Carl | Leaded,free machining light alloys - which can be rolled to sheet |
JPS61159547A (en) * | 1985-01-07 | 1986-07-19 | Nippon Light Metal Co Ltd | Non-heat-treated type free-cutting aluminum alloy |
JPS61163233A (en) * | 1985-01-11 | 1986-07-23 | Furukawa Alum Co Ltd | Non-heat treatment type free-cutting aluminum alloy |
US5122208A (en) * | 1991-07-22 | 1992-06-16 | General Motors Corporation | Hypo-eutectic aluminum-silicon alloy having tin and bismuth additions |
JPH0797653A (en) * | 1993-09-29 | 1995-04-11 | Sumitomo Light Metal Ind Ltd | Cast bar of free cutting aluminum alloy |
-
1996
- 1996-09-09 CZ CZ19962628A patent/CZ286150B6/en not_active IP Right Cessation
-
1997
- 1997-08-28 EP EP97810609A patent/EP0828008B1/en not_active Revoked
- 1997-08-28 AT AT97810609T patent/ATE194393T1/en not_active IP Right Cessation
- 1997-08-28 DE DE59701965T patent/DE59701965D1/en not_active Revoked
- 1997-08-28 EP EP99121526A patent/EP0982410A1/en not_active Withdrawn
- 1997-09-03 HU HU9701466A patent/HUP9701466A3/en unknown
- 1997-09-05 PL PL97321947A patent/PL183835B1/en not_active IP Right Cessation
- 1997-09-09 SI SI9700232A patent/SI9700232A/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0285331A (en) * | 1988-09-19 | 1990-03-26 | Furukawa Alum Co Ltd | Aluminum alloy having excellent cross feed machinability and its manufacture |
JPH0339442A (en) * | 1989-07-06 | 1991-02-20 | Furukawa Alum Co Ltd | Aluminum free cutting alloy for hot forging |
JPH07197165A (en) * | 1993-12-28 | 1995-08-01 | Furukawa Electric Co Ltd:The | High wear resistant free cutting aluminum alloy and its production |
WO1996013617A1 (en) * | 1994-10-27 | 1996-05-09 | Reynolds Metals Company | Machineable aluminum alloys containing in and sn and process for producing the same |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 014, no. 280 (C - 0729) 18 June 1990 (1990-06-18) * |
PATENT ABSTRACTS OF JAPAN vol. 015, no. 173 (C - 0828) 2 May 1991 (1991-05-02) * |
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 11 26 December 1995 (1995-12-26) * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6780375B2 (en) | 2002-04-25 | 2004-08-24 | The Furukawa Electric Co., Ltd. | Aluminum alloy with good cuttability, method for producing a forged article, and forged article |
WO2004033740A1 (en) * | 2002-10-09 | 2004-04-22 | Showa Denko K.K. | Aluminum alloy for cutting processing, and aluminum alloy worked article made of the same |
WO2005038278A1 (en) * | 2003-09-20 | 2005-04-28 | Ks Gleitlager Gmbh | Plain bearing composite material |
US7601434B2 (en) | 2003-09-20 | 2009-10-13 | Ks Gleitlager Gmbh | Plain bearing composite material |
DE102007049531B3 (en) * | 2007-10-15 | 2009-05-07 | Willy Kreutz Gmbh & Co. Kg | Method for producing a contact pin for a fluorescent tube |
US8066541B2 (en) | 2007-10-15 | 2011-11-29 | Willy Kreutz Gmbh & Co. Kg | Method for producing a contact pin for a fluorescent tube and contact pin for a fluorescent tube |
CN101363091B (en) * | 2008-09-08 | 2010-06-02 | 营口华润有色金属制造有限公司 | High-silicon aluminum alloy and method for preparing same |
Also Published As
Publication number | Publication date |
---|---|
EP0828008A3 (en) | 1998-11-11 |
DE59701965D1 (en) | 2000-08-10 |
HU9701466D0 (en) | 1997-11-28 |
ATE194393T1 (en) | 2000-07-15 |
CZ286150B6 (en) | 2000-01-12 |
PL321947A1 (en) | 1998-03-16 |
CZ262896A3 (en) | 1999-05-12 |
EP0828008A2 (en) | 1998-03-11 |
HUP9701466A3 (en) | 2002-03-28 |
PL183835B1 (en) | 2002-07-31 |
HUP9701466A2 (en) | 1999-06-28 |
EP0828008B1 (en) | 2000-07-05 |
SI9700232A (en) | 1998-04-30 |
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