Abstract: The present disclosure relates to a cold plasma generating apparatus that can efficiently ignite (initially discharge) cold plasma and easily match common impedance and that is optimized for use in applications related to sterilization because it can uniformly distribute power to multiple plasma sources through a single power supply in a multi-plasma array configuration and increase effective plasma volume, and a multi-cold plasma array apparatus comprising the same.

Abstract: The present disclosure relates to a cold plasma generating apparatus that can efficiently ignite (initially discharge) cold plasma and easily match common impedance and that is optimized for use in applications related to sterilization because it can uniformly distribute power to multiple plasma sources through a single power supply in a multi-plasma array configuration and increase effective plasma volume, and a multi-cold plasma array apparatus comprising the same.

Abstract: Provided is a dry type ultrasonic cleaner having a multi-suction port that can quickly, uniformly, and reliably remove particles on a product through the multi-suction port without scattering, and in particular, can remove a wide range of particles having a size of several micrometers to several millimeters, thereby securing product competitiveness.

Abstract: Provided is a hand-type low temperature microwave plasma generator that is configured to implement plasma even in a low power state, and be easily applied to various small devices using microwave plasma including medical treatment and the like of wound treatment or cell treatment.

Abstract: Disclosed herein is an apparatus and method for forming a product having an asymmetric cross-section using a ring rolling process. The method of forming a product having an asymmetric cross-section uses a ring rolling process that uses a ring rolling apparatus, the ring rolling apparatus comprising: a main roll pressing a circumferential outer surface of a blank, a pressure roll pressing a circumferential inner surface of the blank, and a pair of axial rolls pressing upper and lower surfaces of the blank, wherein a protrusion provided on the pressure roll comes into contact with a depressed portion formed on the circumferential inner surface of the blank, and as a width of the blank varies, the pressure roll moves in a vertical direction.

Abstract: Disclosed herein is a method of manufacturing a flange for wind towers through a ring rolling process. The ring rolling process makes use of a ring rolling machine. The ring rolling machine includes a main roll which presses a circumferential outer surface of a blank, a pressure roll which presses a circumferential inner surface of the blank, and a pair of axial rolls which press upper and lower surfaces of the blank. The method includes expanding an inner diameter and outer diameter of the blank using the ring rolling machine, transferring the pressure roll vertically so that a protrusion provided on a circumferential outer surface of the pressure roll comes into contact with the circumferential inner surface of the blank, and forming a depression in the circumferential inner surface of the blank using the protrusion of the pressure roll.

Abstract: Disclosed herein is an apparatus and method for forming a product having an asymmetric cross-section using a ring rolling process. The method of forming a product having an asymmetric cross-section uses a ring rolling process that uses a ring rolling apparatus, the ring rolling apparatus comprising: a main roll pressing a circumferential outer surface of a blank, a pressure roll pressing a circumferential inner surface of the blank, and a pair of axial rolls pressing upper and lower surfaces of the blank, wherein a protrusion provided on the pressure roll comes into contact with a depressed portion formed on the circumferential inner surface of the blank, and as a width of the blank varies, the pressure roll moves in a vertical direction.

Abstract: Disclosed herein is a method of manufacturing a door frame for a wind tower. The method includes a first step of forging a circular planar substance, thereby forming a through hole in a central portion of the substance, a second step of heating the substance that was processed in the first step, a third step of ring-rolling the heated substance around the through hole in an annular shape such that a circumstance of a center hole of the substance is equal to a length of a center line of the door frame, a fourth step of upset-forging the annular substance so that opposite sides of the substance are pressed to form linear sections, and a fifth step of fine-finishing the substance that was processed by the fourth step, thus completing the door frame.

Abstract: There is disclosed a plasma gun for bio/medical treatment using atmospheric plasma. The disclosed plasma gun comprises a housing having an elongate chamber provided therein, the chamber having an end at which a nozzle for spraying plasma is positioned; a gas supply unit for supplying a reaction gas to the chamber; and a plasma discharge unit formed with an elongate cavity communicating with the nozzle, the plasma discharge unit including first and second electrodes and a dielectric or insulating barrier material for plasma ignition in the elongate cavity.

Abstract: The present invention relates to an injection type plasma treatment apparatus. An object of the present invention is to provide an injection type plasma treatment apparatus capable of treating work pieces with a variety of areas, sizes and shapes without damages due to micro arc streamer by using a method of injecting plasma, which is generated through dielectric barrier discharge (DBD) under the normal pressure condition, toward the work pieces.

Abstract: A portable die cleaning apparatus and method are provided The apparatus is capable of performing a plasma cleaning process for a surface of a die using plasma discharge generated in a reaction chamber that is defined on the die, without separating the die. The portable die cleaning apparatus includes a frame with an open lower face to define a reaction chamber facing the surface of the die between the surface of the die and the frame itself when the frame is seated on the die and an active electrode that is placed at a position opposite to the die in a state where the die is electrically grounded, and receives electric power from an external power supply to generate plasma in the reaction chamber.