EP0075350A1 - Alloy for inoculating tin-base alloys - Google Patents
Alloy for inoculating tin-base alloys Download PDFInfo
- Publication number
- EP0075350A1 EP0075350A1 EP82201099A EP82201099A EP0075350A1 EP 0075350 A1 EP0075350 A1 EP 0075350A1 EP 82201099 A EP82201099 A EP 82201099A EP 82201099 A EP82201099 A EP 82201099A EP 0075350 A1 EP0075350 A1 EP 0075350A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tin
- alloy
- weight
- zinc
- magnesium
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims description 28
- 239000000956 alloy Substances 0.000 title claims description 28
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910001128 Sn alloy Inorganic materials 0.000 claims abstract description 29
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 13
- 239000011701 zinc Substances 0.000 claims abstract description 13
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 12
- 239000011777 magnesium Substances 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims description 14
- 238000011081 inoculation Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 229960005486 vaccine Drugs 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 abstract 2
- 238000001000 micrograph Methods 0.000 description 4
- 229910052787 antimony Inorganic materials 0.000 description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910017482 Cu 6 Sn 5 Inorganic materials 0.000 description 2
- 229910018471 Cu6Sn5 Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C13/00—Alloys based on tin
Definitions
- the invention relates to an alloy for inoculating tin alloys, in particular tin casting alloys, and to a method for inoculating the tin alloys.
- Tin alloys are used to manufacture tin devices by casting or shaping and are described, for example, in part in DIN 1780.
- the decisive demands on the part of processing tin alloys for the manufacture of tin devices by casting include good mold filling, flow and good make-up behavior, a reduction in the formation of micro voids as well as smooth and non-porous surfaces of the cast tin devices.
- Good deformability as a result of high elongation at break with sufficient strength, a high limit drawing ratio, low creasing and a flawless surface of the molded parts produced are important for the production of pressed or deep-drawn tin devices.
- Particularly troublesome surface defects are deep-drawing parabolas in the form of material separations and micro-cracks in the direction of flow and pressure.
- the more or less strong occurrence of one or more defects of this type can be derived on the one hand from the specification of non-optimal casting, rolling or further processing conditions on the other hand latent due to the alloy composition.
- the intermetallic Cu 6 Sn 5 phase can increase significantly, which is precipitated in long needles and rhombuses.
- This structure which is harder than that of the tin-rich mixed crystal, can lead to strong differences in the deformation resistance in the structure and disrupt the uniform flow of the material during pressing and deep drawing.
- Draw parabolas are the result, especially when this phase occurs frequently in the form of large needles and rhombuses at discrete points in the structure.
- the present invention is based on the object, in particular in the case of copper-containing tin alloys, of refining the C U6 Sn 5 phase and in the case of lead and antimony-containing tin alloys of achieving grain refinement by inoculation, without the good mechanical and technological properties of the tin alloys affect.
- tin inoculation alloy with additions of zinc, aluminum and magnesium, so that in the inoculated and to be processed tin alloys 0.0045 to 0.45% by weight, preferably 0.0045 to 0.24% by weight of zinc , 0.0005 to 0.05 wt .-% aluminum and 0.0001 to 0.01 wt .-% magnesium are included.
- the tin vaccine alloy consists of 6 to 12% by weight zinc, 0.1 to 1% by weight aluminum, 0.008 to 0.8% by weight magnesium, the rest tin.
- a preferred composition of the tin vaccine alloy consists of 9.25% by weight zinc, 0.5% by weight aluminum, 0.25% by weight magnesium, the rest tin.
- the method for inoculating tin alloys with the tin inoculation alloy according to the invention is carried out in such a way that it is based on the molten tin alloy to be processed at a temperature of 300 to 400 ° C. in an amount of 0.1 to 1% by weight Amount of the tin alloy melt is added.
- the tin inoculation alloy can be shot into the tin alloy or stirred into the tin alloy melt while the casting mold is being filled.
- Grain refinement is achieved by adding the tin inoculation alloy to tin alloys in such a way that the Cu6Sn5 phase is finely dispersed in the direction of globular solidification and that grain refinement is also achieved in tin alloys containing lead and antimony. This results in an improvement in the casting and solidification behavior with regard to improved water make-up, reduction of micro-voids and internal porosity as well as a smoother surface of the cast parts.
- FIG. 2 shows a metallic micrograph of the tin casting alloy mentioned in FIG. 1, but which has been inoculated with a tin alloy with 8.47% by weight of zinc, 0.47% by weight of aluminum and 0.19% by weight of magnesium so that the tin casting alloy has a zinc content of 0.0360% by weight, an aluminum content of 0.0010% by weight and a magnesium content of 0.00065% by weight.
- a comparative comparison of the two metallographic micrographs shows that the Cu6Sn5 phase is finely dispersed by adding the tin seed alloy to a conventional tin casting alloy.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Contacts (AREA)
- Continuous Casting (AREA)
Abstract
Description
Die Erfindung betrifft eine Legierung zum Impfen von Zinnlegierungen,insbesondere Zinngußlegierungen sowie ein Verfahren zum Impfen der Zinnlegierungen.The invention relates to an alloy for inoculating tin alloys, in particular tin casting alloys, and to a method for inoculating the tin alloys.
Zinnlegierungen dienen zur Herstellung von Zinngeräten durch Gießen oder Verformen und sind beispielsweise zum Teil in DIN 1780 beschrieben.Zu den entscheidenen Forderungen von seiten der Verarbeitung an Zinnlegierungen für die Herstellung von Zinngeräten durch Gießen zählen ein gutes Formfüllungs-, Fließ- und ein gutes Nachspeisungsverhalten, eine Reduzierung der Mikrolunkerbildung sowie glatte und porenfreie Oberflächen der gegossenen Zinngeräte. Für die Herstellung von gedrücktem oder tiefgezogenem Zinngerät sind eine gute Verformbarkeit als Folge hoher Bruchdehnung bei ausreichender Festigkeit, ein hohes Grenzziehverhältnis, eine geringe Zipfligkeit und eine fehlerfreie Oberfläche der erzeugten Formteile von Bedeutung. Besonders störende Oberflächenfehler sind Tiefziehparabeln in Form von Materialtrennungen und Mikrorisse in Fließ- und Drückrichtung. Das mehr oder wenige starke Auftreten einer oder mehrerer Fehler dieser Art kann einerseits aus der Vorgabe nicht optimaler Gieß-, Walz- oder Weiterverarbeitungsbedingungen hergeleitet werden, ist andererseits latent durch die Legierungszusammensetzung bedingt. So kann es je nach Vorgabe der Gießbedingungen und der Legierungszusammensetzung zu starken Steigerungen der intermetallischen Cu6Sn5-Phase kommen, die sich in langen Nadeln und Rhomben ausscheidet. Diese gegenüber dem aus dem zinnreichen Mischkristall bestehenden Grundgefüge härterer Phase kann zu starken Unterschieden in den Verformungswiderständen im Gefüge führen und das gleichmäßige Fließen des Werkstoffs beim Drücken und Tiefziehen stören. Ziehparabeln sind die Folge, insbesondere dann, wenn diese Phase an diskreten Stellen im Gefüge gehäuft in Form von großen Nadeln und Rhomben auftritt.Tin alloys are used to manufacture tin devices by casting or shaping and are described, for example, in part in DIN 1780. The decisive demands on the part of processing tin alloys for the manufacture of tin devices by casting include good mold filling, flow and good make-up behavior, a reduction in the formation of micro voids as well as smooth and non-porous surfaces of the cast tin devices. Good deformability as a result of high elongation at break with sufficient strength, a high limit drawing ratio, low creasing and a flawless surface of the molded parts produced are important for the production of pressed or deep-drawn tin devices. Particularly troublesome surface defects are deep-drawing parabolas in the form of material separations and micro-cracks in the direction of flow and pressure. The more or less strong occurrence of one or more defects of this type can be derived on the one hand from the specification of non-optimal casting, rolling or further processing conditions on the other hand latent due to the alloy composition. Depending on the requirements of the casting conditions and the composition of the alloy, the intermetallic Cu 6 Sn 5 phase can increase significantly, which is precipitated in long needles and rhombuses. This structure, which is harder than that of the tin-rich mixed crystal, can lead to strong differences in the deformation resistance in the structure and disrupt the uniform flow of the material during pressing and deep drawing. Draw parabolas are the result, especially when this phase occurs frequently in the form of large needles and rhombuses at discrete points in the structure.
Ausgehend von dieser Erkenntnis liegt der vorliegenden Erfindung die Aufgabe zugrunde, insbesondere bei kupferhaltigen Zinnlegierungen eine Feinung der CU6Sn5-Phase und bei blei- und antimonhaltigen Zinnlegierungen eine Kornfeinung durch Impfen zu erzielen, ohne dabei die guten mechanisch-technologischen Eigenschaften der Zinnlegierungen zu beeinträchtigen.On the basis of this knowledge, the present invention is based on the object, in particular in the case of copper-containing tin alloys, of refining the C U6 Sn 5 phase and in the case of lead and antimony-containing tin alloys of achieving grain refinement by inoculation, without the good mechanical and technological properties of the tin alloys affect.
Gelöst ist diese Aufgabe durch eine Zinnimpflegierung mit Zusätzen von Zink, Aluminium und Magnesium, so daß in den geimpften und zu verarbeitenden Zinnlegierungen 0,0045 bis 0,45 Gew.-%, vorzugsweise 0,0045 bis 0,24 Gew.-% Zink, 0,0005 bis 0,05 Gew.-% Aluminium und 0,0001 bis 0,01 Gew.-% Magnesium enthalten sind.This object is achieved by a tin inoculation alloy with additions of zinc, aluminum and magnesium, so that in the inoculated and to be processed tin alloys 0.0045 to 0.45% by weight, preferably 0.0045 to 0.24% by weight of zinc , 0.0005 to 0.05 wt .-% aluminum and 0.0001 to 0.01 wt .-% magnesium are included.
Insbesondere besteht die Zinnimpflegierung aus 6 bis 12 Gew.-% Zink, 0,1 bis 1 Gew.-% Aluminium, 0,008 bis 0,8 Gew.-% Magnesium, Rest Zinn.In particular, the tin vaccine alloy consists of 6 to 12% by weight zinc, 0.1 to 1% by weight aluminum, 0.008 to 0.8% by weight magnesium, the rest tin.
Eine vorzugsweise Zusammensetzung der Zinnimpflegierung besteht aus 9,25 Gew.-% Zink, 0,5 Gew.-% Aluminium, 0,25 Gew.-% Magnesium, Rest Zinn.A preferred composition of the tin vaccine alloy consists of 9.25% by weight zinc, 0.5% by weight aluminum, 0.25% by weight magnesium, the rest tin.
Das Verfahren zum Impfen von Zinnlegierungen mit der erfindungsgemäßen Zinnimpflegierung wird in der Weise durchgeführt, daß diese in die zu verarbeitende geschmolzene Zinnlegierung bei einer Temperatur von 300 bis 400 °C in einer Menge von 0,1 bis 1 Gew.-% bezogen, auf die Menge der Zinnlegierungsschmelze, zugesetzt wird.The method for inoculating tin alloys with the tin inoculation alloy according to the invention is carried out in such a way that it is based on the molten tin alloy to be processed at a temperature of 300 to 400 ° C. in an amount of 0.1 to 1% by weight Amount of the tin alloy melt is added.
Die Zinnimpflegierung kann während des Füllens der Gießform in die Zinnlegierung eingeschossen oder in die Zinnlegierungsschmelze eingerührt werden.The tin inoculation alloy can be shot into the tin alloy or stirred into the tin alloy melt while the casting mold is being filled.
Gegebenenfalls ist es auch möglich, die Zinnimpflegierung in einer kleinen Schmelzmenge der Zinnlegierung aufzulösen und dann der zu impfenden Zinnschmelze zuzusetzen.If necessary, it is also possible to dissolve the tin inoculation alloy in a small amount of the tin alloy and then add it to the tin melt to be inoculated.
Durch den Zusatz der Zinnimpflegierung zu Zinnlegierungen wird eine Kornfeinung dergestalt erreicht, daß die Cu6Sn5-Phase feindispers in Richtung globulitischer Erstarrung verteilt ist und daß bei blei- und antimonhaltigen Zinnlegierungen ebenfalls eine Kornfeinung erreicht wird. Dadurch eribt sich eine Verbesserung des Guß- und Erstarrungsverhaltens bezüglich verbesserter Nachspeisung, Reduzierung von Mikrolunkerbildung und Innenporosität sowie glatterer Oberfläche der gegossenen Teile.Grain refinement is achieved by adding the tin inoculation alloy to tin alloys in such a way that the Cu6Sn5 phase is finely dispersed in the direction of globular solidification and that grain refinement is also achieved in tin alloys containing lead and antimony. This results in an improvement in the casting and solidification behavior with regard to improved water make-up, reduction of micro-voids and internal porosity as well as a smoother surface of the cast parts.
Die mit der Erfindung erzielten Vorteile sind an Hand der in den Zeichnungen wiedergegebenen metallographischen Gefügeaufnahmen beispielhaft dargestellt und nachfolgend näher erläutert.The advantages achieved with the invention are illustrated by way of example on the basis of the metallographic micrographs shown in the drawings and are explained in more detail below.
Fig 1 zeigt eine metallographische Gefügeaufnahme einer Zinngußlegierung mit 3,02 Gew.-% Antimon, 2,80 Gew.-% Kupfer und 0.043 Gew.-% Blei,wobei die helle Phase die Cu6Sn 5-Phase darstellt.1 shows a metallographic micrograph of a tin casting alloy with 3.02% by weight of antimony, 2.80% by weight of copper and 0.043% by weight of lead, the bright phase representing the Cu 6 Sn 5 phase.
In Fig.2 ist eine metallische Gefügeaufnahme der bei Fig.l genannten Zinngußlegierung wiedergegeben, die jedoch mit einer Zinnlegierung mit 8,47 Gew.-% Zink, 0,47 Gew.-% Aluminium und 0,19 Gew.-% Magnesium geimpft worden ist, so daß sich in der Zinngußlegierung ein Zinkgehalt von 0,0360 Gew.-%, ein Aluminiumgehalt von 0,0010 Gew.-% und ein Magnesiumgehalt von 0,00065 Gew.-% eingestellt hat.2 shows a metallic micrograph of the tin casting alloy mentioned in FIG. 1, but which has been inoculated with a tin alloy with 8.47% by weight of zinc, 0.47% by weight of aluminum and 0.19% by weight of magnesium so that the tin casting alloy has a zinc content of 0.0360% by weight, an aluminum content of 0.0010% by weight and a magnesium content of 0.00065% by weight.
Eine vergleichende Gegenüberstellung der beiden metallographischen Gefügeaufnahmen zeigt, daß durch die Zugabe der Zinnimpflegierung zu einer herkömmlichen Zinngußlegierung die Cu6Sn5-Phase feindispers verteilt ist.A comparative comparison of the two metallographic micrographs shows that the Cu6Sn5 phase is finely dispersed by adding the tin seed alloy to a conventional tin casting alloy.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT82201099T ATE14754T1 (en) | 1981-09-10 | 1982-09-07 | ALLOY FOR INOCULATION OF TIN ALLOYS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3135847A DE3135847C2 (en) | 1981-09-10 | 1981-09-10 | Master alloy for the production of fine-grain tin alloys |
| DE3135847 | 1981-09-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0075350A1 true EP0075350A1 (en) | 1983-03-30 |
| EP0075350B1 EP0075350B1 (en) | 1985-08-07 |
Family
ID=6141295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82201099A Expired EP0075350B1 (en) | 1981-09-10 | 1982-09-07 | Alloy for inoculating tin-base alloys |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0075350B1 (en) |
| AT (1) | ATE14754T1 (en) |
| DE (2) | DE3135847C2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2589379A1 (en) * | 1985-11-05 | 1987-05-07 | Asturienne France | Composition for welding or brazing, in particular for assembling zinc elements |
| WO1998032886A1 (en) * | 1997-01-29 | 1998-07-30 | Alpha Fry Limited | Lead-free tin alloy |
| EP1531024A1 (en) * | 2002-08-23 | 2005-05-18 | Nippon Metal Industry Co.,Ltd. | Tin-zinc lead-free solder, its mixture, and solder-joined part |
| EP1531025A1 (en) * | 2002-08-23 | 2005-05-18 | Nippon Metal Industry Co.,Ltd. | Tin-zinc lead-free solder and solder-joined part |
| CN103831543A (en) * | 2012-11-23 | 2014-06-04 | 吴永恒 | Lead-free soldering material and preparing method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19538365A1 (en) * | 1995-10-14 | 1997-04-17 | Leybold Materials Gmbh | High purity tin@ alloy target material for sputter coating process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2713196A1 (en) * | 1977-03-25 | 1978-10-05 | Ver Zinkwerke Gmbh | Alloy contg. tin with antimony and copper - with zinc, aluminium and magnesium additions to improve workability |
-
1981
- 1981-09-10 DE DE3135847A patent/DE3135847C2/en not_active Expired
-
1982
- 1982-09-07 DE DE8282201099T patent/DE3265239D1/en not_active Expired
- 1982-09-07 EP EP82201099A patent/EP0075350B1/en not_active Expired
- 1982-09-07 AT AT82201099T patent/ATE14754T1/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2713196A1 (en) * | 1977-03-25 | 1978-10-05 | Ver Zinkwerke Gmbh | Alloy contg. tin with antimony and copper - with zinc, aluminium and magnesium additions to improve workability |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2589379A1 (en) * | 1985-11-05 | 1987-05-07 | Asturienne France | Composition for welding or brazing, in particular for assembling zinc elements |
| WO1998032886A1 (en) * | 1997-01-29 | 1998-07-30 | Alpha Fry Limited | Lead-free tin alloy |
| EP1531024A1 (en) * | 2002-08-23 | 2005-05-18 | Nippon Metal Industry Co.,Ltd. | Tin-zinc lead-free solder, its mixture, and solder-joined part |
| EP1531025A1 (en) * | 2002-08-23 | 2005-05-18 | Nippon Metal Industry Co.,Ltd. | Tin-zinc lead-free solder and solder-joined part |
| EP1531025A4 (en) * | 2002-08-23 | 2006-04-26 | Nippon Metal Ind | Tin-zinc lead-free solder and solder-joined part |
| EP1531024A4 (en) * | 2002-08-23 | 2006-04-26 | Nippon Metal Ind | Tin-zinc lead-free solder, its mixture, and solder-joined part |
| CN103831543A (en) * | 2012-11-23 | 2014-06-04 | 吴永恒 | Lead-free soldering material and preparing method thereof |
| CN103831543B (en) * | 2012-11-23 | 2016-08-24 | 吴永恒 | Leadless welding material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3265239D1 (en) | 1985-09-12 |
| ATE14754T1 (en) | 1985-08-15 |
| DE3135847A1 (en) | 1983-04-07 |
| EP0075350B1 (en) | 1985-08-07 |
| DE3135847C2 (en) | 1983-11-03 |
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