公开(公告)号：US09773642B2

公开(公告)日：2017-09-26

申请号：US14355847

申请日：2013-06-12

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Takashi Oda ,  Hisamune Tanaka ,  Takeshi Shiraki

IPC: H01J37/305 ,  H01J37/304 ,  F27D11/08 ,  C22B9/22 ,  B22D23/06 ,  H01J37/22 ,  F27D11/12 ,  F27D19/00 ,  C22C14/00

CPC classification number: H01J37/304 ,  B22D23/06 ,  C22B9/228 ,  C22C14/00 ,  F27D11/08 ,  F27D11/12 ,  F27D19/00 ,  F27D2019/0071 ,  H01J37/22 ,  H01J37/222 ,  H01J37/3045 ,  H01J37/305

Abstract: An electron beam melting furnace includes a hearth, a mold, an electron gun for keeping metal as a molten state, an electron beam controller for controlling direction of the electron beam, an image sensor for molten metal, and an operating device. A method for operating the furnace includes a step of inputting electron beam emitting coordinates in the electron beam controller, a step of emitting the electron beam, a step of detecting a high electron beam intensity spot by the image sensor, a step of calculating coordinates of high electron beam intensity based on the detected signal by the operating device, a step of calculating differences between the coordinates of emission and the coordinates of high electron beam intensity spot, a step of inputting the difference in the electron beam controller, and a step of controlling the location of electron beam spot.

公开(公告)号：US20140294035A1

公开(公告)日：2014-10-02

申请号：US14355847

申请日：2013-06-12

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Takashi Oda ,  Hisamune Tanaka ,  Takeshi Shiraki

IPC: H01J37/304

CPC classification number: H01J37/304 ,  B22D23/06 ,  C22B9/228 ,  C22C14/00 ,  F27D11/08 ,  F27D11/12 ,  F27D19/00 ,  F27D2019/0071 ,  H01J37/22 ,  H01J37/222 ,  H01J37/3045 ,  H01J37/305

Abstract: An electron beam is accurately emitted to a pre-set location on a molten metal pool formed in a hearth or a mold arranged in an electron beam melting furnace. The present invention provides a method for operating an electron beam melting furnace, the furnace includes: a hearth and a mold for holding molten metal, an electron gun for keeping the metal as a molten state, an electron beam controlling means for controlling direction of the electron beam, an image sensor for molten metal, and an operating means, and the method includes: a step of inputting coordinates in the electron beam controlling means at which an electron beam is to be emitted on molten metal, a step of emitting the electron beam on the molten metal, a step of detecting a high electron beam intensity spot generated by emitting an electron beam on the molten metal by the image sensor, a step of calculating coordinates of high electron beam intensity based on the detected signal by the operating means, a step of calculating differences between the coordinates of emission and the coordinates of high electron beam intensity spot, a step of inputting the difference in the electron beam controlling means, and a step of controlling the location of electron beam spot so that the difference be not more than pre-set value.

Abstract translation: 电子束被精确地发射到形成在布置在电子束熔化炉中的炉床或模具中的熔融金属池上的预定位置。 本发明提供了一种操作电子束熔化炉的方法，该炉包括：用于保持熔融金属的炉床和模具，用于将金属保持为熔融状态的电子枪，用于控制熔融金属的方向的电子束控制装置 电子束，用于熔融金属的图像传感器和操作装置，并且该方法包括：输入电子束控制装置中要在熔融金属上发射电子束的坐标的步骤，发射电子的步骤 检测通过图像传感器在熔融金属上发射电子束而产生的高电子束强度点的步骤，基于操作装置的检测信号计算高电子束强度的坐标的步骤 计算发射坐标与高电子束强度点的坐标之间的差异的步骤，输入电子差异的步骤 n光束控制装置，以及控制电子束光斑位置的步骤，使差值不超过预定值。