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公开(公告)号：US11267064B2
公开(公告)日：2022-03-08
申请号：US16326698
申请日：2017-08-31
摘要： A method of controlling arc welding with a consumable electrode includes repeating the following periods in sequence: a short-circuit welding period to perform short-circuit arc welding; a pulse welding period to perform pulse welding; and a cooling period in which the welding current output is zero.
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公开(公告)号：US11298770B2
公开(公告)日：2022-04-12
申请号：US16338129
申请日：2017-10-10
发明人： Junji Fujiwara , Yuya Furuyama
摘要： An arc welding method alternately generates a short-circuit state and an arc state. In the method, short circuits are generated also in the arc period. This more than doubles the total number of short circuits, which is the sum of the short circuits generated in the short circuit period and those generated in the arc period. This enables a thin plate to be arc welded at a higher speed, while reducing its burn-through.
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公开(公告)号：US10974338B2
公开(公告)日：2021-04-13
申请号：US16086653
申请日：2017-03-17
发明人： Yuya Furuyama , Atsuhiro Kawamoto , Junji Fujiwara , Masaru Kowa , Kaito Matsui
摘要： In thin sheet welding, when a heat input amount relative to a sheet thickness is too large, a welding defect such as a deviation from aim due to occurrence of a strain or burn through may easily occur. When a welding current is decreased to reduce the heat input amount, there is an issue in which an arc tends to become unstable. In arc welding in which short-circuit and arcing are repeated, first heat input period (Th) and second heat input period (Tc) having a heat input amount less than that of first heat input period (Th) are periodically repeated and a welding current during an arc period in second heat input period (Tc) is decreased to extinguish the arc. This reduces the heat input amount into a welding object and suppresses burn through or a strain upon welding, while making the arc stable.
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公开(公告)号：US10919100B2
公开(公告)日：2021-02-16
申请号：US16086658
申请日：2017-03-17
发明人： Yuya Furuyama , Atsuhiro Kawamoto , Junji Fujiwara , Masaru Kowa , Kaito Matsui
摘要： In thin sheet welding, when a heat input amount relative to a sheet thickness is too large, a welding defect such as a deviation from aim due to occurrence of a strain or burn through may easily occur. When a welding current is decreased to reduce the heat input amount, there is an issue in which an arc tends to become unstable. In arc welding that repeats short-circuit and arcing, first heat input period (Th) and second heat input period (Tc) having a heat input amount less than that of first heat input period (Th) are periodically repeated. This reduces the heat input amount into a welding object and suppresses burn through and a strain upon welding while making the arc stable.
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