公开(公告)号：US20140182347A1

公开(公告)日：2014-07-03

申请号：US13731468

申请日：2012-12-31

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Hyun Rok Cha ,  Dae Yeong Im

IPC: B21C23/00

CPC classification number: B21C23/004

Abstract: Disclosed herein is an ultrasonic extrusion apparatus which causes resonance of an extrusion die using ultrasonic vibrations, thus reducing friction between the extrusion die and an extrusion material. The ultrasonic extrusion apparatus has an increased number of ultrasonic vibrators provided around the extrusion die in the circumferential direction to increase the vibration output, whereby when extruding a metal material such as a magnesium material, friction between the metal material and the extrusion die can be reduced, thus improving the performance of the extrusion process (preventing a reduction in an extrusion rate, generation of heat, cracking of a product, errors in measurements, etc.).

Abstract translation: 本文公开了一种超声波挤出装置，其使用超声波振动引起挤出模头的共振，从而减少挤出模头和挤出材料之间的摩擦。 超声波挤压装置在周向上具有设置在挤压模周围的超声波振动器数量增加，以增加振动输出，由此，当挤出金属材料如镁材料时，可以减少金属材料和挤出模头之间的摩擦 ，从而提高挤出过程的性能（防止挤出速度降低，产生热量，产品破裂，测量误差等）。

公开(公告)号：US09696364B2

公开(公告)日：2017-07-04

申请号：US14529177

申请日：2014-10-31

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Dae Yeong Im ,  Hyun Rok Cha ,  Bong Kee Park ,  Jin Ho You

IPC: G01R31/02 ,  G06F3/041 ,  G06F3/044

CPC classification number: G01R31/024 ,  G06F3/0416 ,  G06F3/0418 ,  G06F3/044

Abstract: Disclosed herein is an apparatus and method for detecting a fault in a digitizer. The apparatus includes a function generator for generating test signals, a transmitting switch for transmitting the test signals generated by the function generator to a selective part or all of X- and Y-channels of a transmitting digitizer, a receiving digitizer arranged in a shape identical to that of the transmitting digitizer to be adjacent to the transmitting digitizer, the receiving digitizer receiving reception signals produced by the transmitting digitizer, a receiving switch for receiving resulting signals, generated by the receiving digitizer in response to the reception signals, from a selective part or all of X- and Y-channels of the receiving digitizer, a channel controller for controlling the transmitting switch and the receiving switch, a data collection unit for collecting the resulting signals, and an analysis unit for analyzing the collected resulting signals.

公开(公告)号：US09156072B2

公开(公告)日：2015-10-13

申请号：US13731468

申请日：2012-12-31

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Hyun Rok Cha ,  Dae Yeong Im

IPC: B21C23/00

CPC classification number: B21C23/004

Abstract: Disclosed herein is an ultrasonic extrusion apparatus which causes resonance of an extrusion die using ultrasonic vibrations, thus reducing friction between the extrusion die and an extrusion material. The ultrasonic extrusion apparatus has an increased number of ultrasonic vibrators provided around the extrusion die in the circumferential direction to increase the vibration output, whereby when extruding a metal material such as a magnesium material, friction between the metal material and the extrusion die can be reduced, thus improving the performance of the extrusion process (preventing a reduction in an extrusion rate, generation of heat, cracking of a product, errors in measurements, etc.).

Abstract translation: 本文公开了一种超声波挤出装置，其使用超声波振动引起挤出模头的共振，从而减少挤出模头和挤出材料之间的摩擦。 超声波挤压装置在周向上具有设置在挤压模周围的超声波振动器数量增加，以增加振动输出，由此，当挤出金属材料如镁材料时，可以减少金属材料和挤出模头之间的摩擦 ，从而提高挤出过程的性能（防止挤出速度降低，产生热量，产品破裂，测量误差等）。