Controlled nozzle cooling (cnc) casting
AssigneeQingyou Han
InventorQingyou Han
Life of this patent
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Abstract
A process for the casting of metals and their alloys includes the steps of providing at least a mold equipped with a plurality of cooling nozzles, making a layer of coolant permeable materials covering the nozzles and maintaining the materials at desired temperatures, delivering a molten metal into the mold, supplying predetermined amount of coolant to each nozzles to contact the casting at desired rate, time, and duration to achieve an acceptable level of progressive solidification from the distal end of the casting towards the riser until the casting has reached desired temperatures.
Claims20
A process for the casting of metals, comprising the steps of:
- preparing at least an aggregate-containing mold with a cavity for castings and a plurality of cavities for hosting cooling nozzles with their spatial spacing small enough to maintain an acceptable level of progressive solidification from the distal end of a casting to the riser or downsprue;
- embedding nozzles into the nozzle cavities in the molds with the tip of each nozzle separated from the surface of a casting by a thin layer of coolant permeable materials;
- introducing a molten metal into the mold cavity for forming castings;
- delivering a predetermined amount of a selected coolant to the tip of each nozzle at predetermined rates, times, and durations to contact the surface of the solidifying casting to maintain an acceptable level of progressive solidification from the distal end of a casting to the riser or downsprue;
- and
- controlling the cooling of the casting to predetermined temperatures using the nozzles and the molds before removing the casting out of the molds.
A process for the casting of metals, comprising the steps of:
- preparing permanent or semi-permanent molds with a plurality of cavities for hosting cooling nozzles with their spatial spacing small enough to maintain an acceptable level of progressive solidification from the distal end of a casting to the riser or downsprue;
- lining the molds with a coolant permeable liner composing of at least an aggregate to form the cavity for casting;
- embedding nozzles into the nozzle cavities in the molds with the tip of each nozzle separated from the surface of the casting by a thin layer of coolant permeable materials;
- introducing a molten metal into the mold cavity for forming castings;
- delivering a predetermined amount of selected coolant to the tip of each nozzle at predetermined rates, times, and durations to contact the surface of the solidifying casting for maintaining an acceptable level of progressive solidification from the distal end of a casting to the riser;
- and
- controlling the cooling of the casting to predetermined temperatures using the nozzles and the molds before removing the casting out of the molds.
A process for the casting of metals, comprising the steps of:
- preparing permanent or semi-permanent molds with a plurality of embedded heating sources and with a plurality of cavities for hosting cooling nozzles with their spatial spacing small enough to maintain an acceptable level of progressive solidification from the distal end of a casting to the riser;
- lining the molds with a coolant permeable liner composing of at least an aggregate to form the cavity for casting;
- embedding nozzles into the nozzle cavities in the molds with the tip of each nozzle separated from the surface of a casting by a thin layer of coolant permeable materials;
- heating the coolant permeable liner to temperatures high enough to allow a smooth filling of the entire mold cavity and to maintain progressive solidification of the casting;
- introducing a molten metal into the mold cavity for forming castings;
- delivering a predetermined amount of selected coolant to the tip of each nozzle at desired rates, times, and durations to contact the surface of the solidifying casting for maintaining an acceptable level of progressive solidification from the distal end of a casting to the riser;
- and
- controlling the cooling of the casting to predetermined temperatures using the nozzles and the molds before removing the casting out of the mold.
Dependencies are inferred from the claim text.