Shot sleeve having a passageway for fluid flow
AssigneeAluminum Company of America
InventorsJoshua C. Liu, Ronald E. Boylstein, George C. Full, Eric D. Arndt, James R. Fields
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Abstract
The shot sleeve of the invention is used in a die casting machine and defines a bore for containing molten metal to be injected into a die. At least one passageway disposed generally parallel to the bore for containing a first fluid having a fluid temperature and a fluid flow rate is provided, whereby substantially uniform temperatures can be maintained across the width of the shot sleeve by controlling the fluid temperature of the fluid flow rate or both the fluid temperature and the fluid flow rate. A die casting machine and an associated method are also disclosed.
Claims31
A shot sleeve for use in a die casting machine, said shot sleeve defining a bore for containing molten metal to be injected into a die and said shot sleeve including at least one passageway disposed generally parallel to said bore for containing a first fluid having a first fluid temperature and a first fluid flow rate, whereby substantially uniform temperatures can be maintained across the width of said shot sleeve by controlling said first fluid temperature or said first fluid flow rate or both said first fluid temperature and said first fluid flow rate in said passageway.
A die casting machine comprising:
- molten metal supply means;
- a shot sleeve defining a bore for containing molten metal, said shot sleeve including at least one passageway disposed generally parallel to said bore for containing a first fluid having a first fluid temperature and a first fluid flow rate, whereby substantially uniform temperatures can be maintained across the width of said shot sleeve by controlling said first fluid temperature or said first fluid flow rate or both said first fluid temperature and said first fluid flow rate;
- a piston operatively associated with said shot sleeve;
- and
- a die for receiving said molten metal injected from said shot sleeve by said piston means.
A method of providing a uniform temperature across the width of a shot sleeve used in a die casting machine, said method comprising:
- providing said shot sleeve defining a bore for containing molten metal, said shot sleeve including at least one passageway disposed generally parallel to said bore;
- and
- introducing into said passageway a first fluid having a first fluid temperature and a first fluid flow rate, whereby a uniform temperature across the width of the shot sleeve is maintained by controlling said first fluid temperature or said first fluid flow rate or both said first fluid temperature and said first fluid flow rate.
Dependencies are inferred from the claim text.