公开(公告)号：US20200047273A1

公开(公告)日：2020-02-13

申请号：US16322321

申请日：2017-07-06

申请人： DAIHEN CORPORATION

发明人： Kohei ONO ,  Toshiaki NAKAMATA

IPC分类号： B23K9/095 ,  B23K9/073 ,  B23K9/12

摘要： The purpose of the present invention is to reduce the amount of sputtering in a welding method wherein a welding wire feed rate is alternately switched between a forward feed period and a reverse feed period. Provided is an arc welding control method that switches a feed rate Fw for welding wire alternately between a forward feed period and a reverse feed period, repeats a short period and an arc period, and electrifies with a welding current Iw switched to a small current value in the latter half of the arc period, wherein a basic voltage setting value is set according to an average feed rate setting value, the error amplitude value for a voltage setting value and the basic voltage setting value is calculated, and the timing (current reduction time Td) for switching the welding current Iw to the small current value is varied on the basis of the average feed rate setting value and the error amplitude value.

公开(公告)号：US20190337080A1

公开(公告)日：2019-11-07

申请号：US16477646

申请日：2018-01-12

申请人： DAIHEN CORPORATION

发明人： Kohei ONO ,  Toshiaki NAKAMATA

IPC分类号： B23K9/073 ,  B23K9/12

摘要： An arc welding control method for controlling welding in which a material of a welding wire is aluminum or an aluminum alloy, and a feed speed Fw of the welding wire is alternately switched between a forward feed period and a reverse feed period to repeat a short circuit period and an arc period, a welding current Iw is controlled so that an average value of maximum values of the welding current Iw during the short circuit period is 150 A or less. A reverse feed peak value Wrp during the reverse feed period is set so that an average value of time lengths of the short circuit period is 7 ms or less. Accordingly, the current value can be reduced when the short circuit is released and the lengthening in the short circuit period can be prevented, so that the spatter generation amount can be reduced.

公开(公告)号：US20190232415A1

公开(公告)日：2019-08-01

申请号：US16251367

申请日：2019-01-18

申请人： DAIHEN Corporation

发明人： Kohei ONO ,  Toshiaki NAKAMATA ,  Kento TAKADA

IPC分类号： B23K9/12 ,  B23K9/095 ,  B23K9/09 ,  B23K9/073

CPC分类号： B23K9/125 ,  B23K9/073 ,  B23K9/09 ,  B23K9/091 ,  B23K9/095 ,  B23K9/0953 ,  B23K9/1006 ,  B23K9/12

摘要： A method is provided for controlling arc welding including forward and reverse feeding periods alternately switched. By the method, a set of a short circuit period and an arc period is repeated, and the arc welding is controlled such that the reverse feeding period shifts to the forward feeding period when an arc occurs during the reverse feeding period, and that the forward feeding period shifts to the reverse feeding period when a short circuit occurs between the welding wire and the object during the forward feeding period. The reverse feeding period includes a reverse feeding deceleration period having a time length that is adjusted in accordance with the time length of the short circuit period.