Gravity die casting aluminium

  • Fonderie coquille gravité de l'aluminium1
  • Fonderie coquille gravité de l'aluminium2
  • Fonderie coquille gravité de l'aluminium3

The gravity die casting process involves pouring a molten aluminum alloy with a ladle into a metal print which solidifies rapidly to form a workpiece.
- This transformation process makes it possible to reproduce pieces of complex shapes with finely ribbed thin walls
- Shell foundry parts require a high degree of finishing which includes a series of operations such as sawing of the jet and the pockets, grinding of the joint plane, heat treatment...
- It is a fast and economical manufacturing process for the production in small and medium series of light alloy parts
- One of these main advantages is to have a high repeatability and a high tool life

Characteristics of the aluminium used in gravity die casting

- At equal volume, aluminum is 30% lighter than steel
- Aluminum is an excellent conductor of temperature, 1.8 times better than copper
- Some cast aluminum alloys can undergo a heat treatment that improves the mechanical characteristics
- Recycling aluminum is easy and economical, environmentally friendly

 

The various aluminum alloys used in gravity die casting

Designation according to European Standard EN 1706 Mechanical characteristics1 N/mm² = 1MPa
Density State Rm N/mm² Rp 0.2 N/mm2 A% HB

ENAC-21000  Mini

AICu4MgTi

           

EN 1706  Maxi  

AU4GT

1ère fusion

 T4  320  200  8  95  2.80

 ENAC-41000  Mini

AlSi2MgTi

 F  170  70  5  50  

 EN 1706  Maxi  

AS2GT

1ère fusion

 T6  260  180  5  85  2.70

 ENAC-42000  Mini

AlSi7Mg

 F 170   90  2.5 55   

 EN 1706  Maxi  

AS7G

2ème fusion

T6  260  220   1  90  2.67

 ENAC-42100  Mini

AlSi7Mg0.3

           

EN 1706  Maxi  

AS7G0.3

1ère fusion

T6   290  210  4 90   2.67

ENAC-42100  Mini

67 XB (Pièces fines)

           

EN 1706  Maxi  

AS7G0.3

1ère fusion

T6 300 215 17.5 90 2.67

ENAC-42200  Mini

AISi7Mg0.6

           

EN 1706  Maxi  

AS7G0.6

1ère fusion

T6 320 240 3 100 2.67

ENAC-43100  Mini

AISi10Mg

F 180 90 2.5 55  

EN 1706  Maxi  

AS10G

2ème fusion

T6  260   220  1  90 2.66 

ENAC-44200  Mini

AISi12(b)

170   80  5  55  

EN 1706  Maxi  

AS12G

2ème fusion

           

ENAC-44200  Mini

43 X

F 150 80 4 60  

EN 1706  Maxi  

AS12

1ère fusion

          2.65

ENAC-51100  Mini

AIMg3 (pièces d'aspect)

F 150 70 5 50  

EN 1706  Maxi  

AG3T

1ère fusion

          2.67

 

Propriétés des alliages d'aluminium utilisés en fonderie coquille 

Désignation selon Norme Européene EN 1706 Flowa-bility Machina-bility Welda-bility Polishing Chroming Plating Tinning Paint (20 to 30 microns) Silvering
Gilding

Anodi-

sation

Corrosion

resistance

Filed of application
EN AC-43400 - AlSi10Mg(Fe) AS10G A B C B/C B B C B B E C Medium-sized parts, general mechanics
EN AC-43500 - AlSi10MnMg A B/C B D B B C B B E B Medium-sized parts, general mechanics
61 D1 (AS10G)       D B B C B B E   Security, automotive, household appliances
EN AC-44300 - AlSi12(Fe) AS12 A C D D B B C B B E C Very complex parts, general mechanics
EN AC-46000 - AlSi9Cu3(Fe) AS9U3 B B F C B B C B B E D Very Large Parts, Automotive, Household Appliances
EN AC-46200 - AlSi8Cu3 B B B C B B C B B E D Very Large Parts, Automotive, Household Appliances
EN AC-46500 - AlSi9Cu3(Fe)(Zn) B B F C B B C B B E D Very Large Parts, Automotive, Household Appliances
EN AC-47100 - AlSi12Cu1(Fe) AS12U A C F C B B C B B E C Medium and large series, automobile, general mechanics

Aptitudes : A = Excellent, B = Good, C = Fair, D = Poor, E = Not recommended, F = Inappropriate

The anodization of aluminum alloy castings can be carried out on alloys with a% Si content of <4%. Aluminum alloys have better resistance to corrosion if the% of Cu is <1% and the% of Zn is <0.5%

M.C.T. Can not be in any way responsible for the exploitation of the indicative data of this commercial document

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