Production method and production device for a composite metal powder using the gas spraying method
AssigneeKorea Institute of Machinery & Materials
InventorsYong-Jin Kim, Sangsun Yang, Tae-Soo Lim
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Abstract
Disclosed herein are a method and an apparatus for preparing a metal composite powder by using gas spraying. The method of preparing a metal composite powder by using gas spraying includes introducing a matrix phase in a chamber, including a reinforcing phase in the chamber, melting the introduced matrix phase to form a melt, adding the reinforcing phase in the melt, stirring the melt with the added reinforcing phase to form a melt mixture, atomizing the melt mixture together with a gas to form a metal composite powder containing the reinforcing phase, and collecting the metal composite powder formed.
Claims21
A method of preparing a metal composite powder by using gas spraying, the method comprising:
- introducing a matrix phase into a chamber;
- including a reinforcing phase in the chamber;
- melting the introduced matrix phase to form a melt;
- adding the reinforcing phase in the melt;
- stirring the melt with the added reinforcing phase to form a melt mixture;
- atomizing the melt mixture together with a gas to form a metal composite powder containing the reinforcing phase;
- and
- collecting the metal composite powder formed.
An apparatus for preparing a metal composite powder by using gas spraying, the apparatus comprising:
- an upper chamber including a crucible in which a matrix phase is introduced and melted;
- an input device included at an upper side of the crucible in the upper chamber and capable of selectively introducing a reinforcing phase into the crucible;
- a stirring device stirring the reinforcing phase introduced into the crucible through the input device and a melt formed by heating in the crucible;
- an atomizing nozzle generating a metal composite powder by atomizing a melt mixture formed by stirring the melt and the reinforcing phase through the stirring device together with a gas;
- and
- a lower chamber which is a collecting space of the metal composite powder generated by the atomizing nozzle.
A method of preparing a metal composite powder by using gas spraying, the method comprising:
- preparing a melt by adding and stirring a metal ingot, an alloy ingot, or an aluminum-reinforcing phase powder after melting an aluminum ingot or an aluminum-silicon (Al—Si) based alloy containing a reinforcing phase by heating, or preparing a melt by heating and stirring an aluminum parent material charged with an aluminum-reinforcing phase powder at the bottom thereof after the aluminum-reinforcing phase powder is subjected to Al-foiling (operation 1);
- and
- atomizing the melt prepared in operation 1 together with a gas to prepare a metal composite powder (operation 2).
A metal composite powder prepared by atomizing a melt, which is prepared by adding and stirring a metal ingot, an alloy ingot, or an aluminum-reinforcing phase powder after an aluminum ingot or an Al—Si based alloy containing a reinforcing phase is melted by heating, together with a gas.
Dependencies are inferred from the claim text.