Hyundai Motor Company

Kia Corporation

Kia Motors Corporation

Joon Chul Yun

Hyun Gon Lyu

Hyung Seok Kwak

Jin Woo Kim

Shin Gyu Kim

Ji Min Yu

Hyun Kyu Choi

A soft magnetic iron-based powder has a composite insulating film and a method for manufacturing the same and a method for manufacturing a soft magnetic composite are provided. The soft magnetic iron-based powder may include: an iron-based core powder formed in a powder form; a first layer formed on a surface of the iron-based core powder and coated with an inorganic material containing phosphate; a second layer formed on a surface of the first layer, in which sodium silicate, mica fine particle and bismuth (III) oxide fine particle are distributed; and a third layer formed on the surface of the first or second layer whose surface is exposed, in which an organic lubricant and an inorganic lubricant are distributed.

Soft magnetic iron-based powder, method for manufacturing the same, and method for manufacturing a soft magnetic composite

An apparatus and method for manufacturing iron-based mixed powder with excellent flowability is provided. The apparatus includes a hopper which stores and discharges a main raw material of iron-based powder, a transport means which transports the main raw material of iron-based powder discharged from the hopper, a magnetizing means that applies magnetic force to the main raw material transported and falling from the transport means to process the main raw material of iron-based powder into a main raw material bundle in a crumbly type in which the main raw material of iron-based powder is agglomerated with each other, a first mixer in which the main raw material bundle in a magnetized state and an auxiliary raw material of iron-based powder are loaded and mixed while being rotated and transported, and a second mixer in which a first iron-based mixed powder is mixed while being rotated and transported.

Apparatus and method for manufacturing iron-based mixed powder

A method of manufacturing iron powder configured for improving a recovery rate of chromium using ingot including chromium in a content suitably higher than a target content at the time of manufacturing iron powder including chromium, may include preparing ingot further including chromium (Cr) so that a content of chromium (Cr) in the ingot is 1 to 30% higher than a target content of chromium (Cr) in finally produced iron powder; dissolving the ingot to prepare molten steel; forming iron powder by performing water atomization on the molten steel; and adjusting a content of carbon (C) in the iron powder by performing reduction treatment on the iron powder.

Method of manufacturing iron powder and iron powder manufactured thereby

A method of producing iron powder by a water atomization process may include preparing a molten metal in a tundish, discharging the molten metal in a free-falling manner by opening an orifice formed on a bottom of the tundish, and producing iron powder by spraying water onto the free-falling molten metal using a pair of water spraying nozzles, an angle formed by the water spraying nozzles being at least 45&#xb0;.

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Incheon, South Korea

Joon Chul Yun