公开(公告)号：WO2015045299A8

公开(公告)日：2016-03-24

申请号：PCT/JP2014004657

申请日：2014-09-10

Applicant: JFE STEEL CORP

Inventor： MATSUSHITA MUNEO ,  TANIGUCHI KOICHI ,  IKEDA RINSEI

IPC: B23K20/12

CPC classification number: B23K20/1235 ,  B23K20/129

Abstract: The purpose of the present invention is to advantageously address reverse flow failures due to insufficient heating of materials to be processed when carrying out friction stir welding of structural steel, to give sufficient strength, and also to improve connection construction. In the present invention, a preheating treatment process is carried out during friction stir welding of structural steel, said preheating treatment process being a process wherein a steel sheet (3), which is the material to be processed, is heated by a heating means (5) provided forward of a rotary tool (1) that moves in a joining direction. The present invention is configured so that the surface temperature, surface area, position, and the like for the heating region in the preheating treatment process are strictly controlled.

Abstract translation: 本发明的目的是为了有效地解决由于在进行结构钢的摩擦搅拌焊接时提供待处理材料的不充分加热而产生的逆流故障，以提供足够的强度，以及改进连接结构。 在本发明中，在结构钢的摩擦搅拌焊接中进行预热处理工序，所述预热处理工序是将被加工材料的钢板（3）加热的方法（ 5）设置在沿连接方向移动的旋转工具（1）的前方。 本发明被配置为严格控制预热处理过程中的加热区域的表面温度，表面积，位置等。

公开(公告)号：WO2015045420A8

公开(公告)日：2016-03-24

申请号：PCT/JP2014004984

申请日：2014-09-29

Applicant: JFE STEEL CORP

Inventor： TANIGUCHI KOICHI ,  MATSUSHITA MUNEO ,  IKEDA RINSEI

IPC: B23K20/12

CPC classification number: B23K20/1235 ,  B23K20/1205 ,  B23K20/122 ,  B23K20/1225 ,  B23K20/227 ,  B23K2201/18 ,  B23K2203/04 ,  C21D1/42 ,  C21D9/50 ,  C21D9/505 ,  Y02P10/253

Abstract: A friction stir welding method for joining steel sheets to one another, wherein a heating device (4) positioned to the front in the direction of travel of a rotating tool pre-heats a section to be joined prior to joining thereof by the rotating tool (10), and when doing so, the surface temperature distribution in the direction perpendicular to the direction of travel at the position at which the joining by the rotating tool (10) starts is set in a manner such that given that TAc1 serves as the Ac1 point of a steel sheet, then the maximum temperature (TU) is in the range of 0.6×TAc1

Abstract translation: 一种用于将钢板彼此接合的摩擦搅拌焊接方法，其中，在旋转工具的行进方向上位于前方的加热装置（4）在通过旋转工具接合之前预加热待接合部分（ 如图10所示，并且当这样做时，在与旋转工具（10）的接合开始的位置处的与行进方向垂直的方向上的表面温度分布被设定为使得如果TAc1用作Ac1 钢板的最高温度（TU）在0.6×TAc1

公开(公告)号：WO2015083381A8

公开(公告)日：2016-03-03

申请号：PCT/JP2014006074

申请日：2014-12-04

Applicant: JFE STEEL CORP

Inventor： TANIGUCHI KOICHI ,  OKITA YASUAKI ,  IKEDA RINSEI

IPC: B23K11/16 ,  B23K11/11 ,  B23K11/24

CPC classification number: B23K11/115 ,  B23K11/0026 ,  B23K11/166 ,  B23K2201/006 ,  B23K2201/18 ,  B23K2201/34 ,  B23K2203/04

Abstract: When resistance spot welding a set of plates obtained by overlapping a plurality of steel plates comprising one or more steel plates having, on the surface thereof, a plating layer having zinc as the principal component thereof, a nugget having sufficient diameter is stably formed without any splashing, by: (1) starting conduction while in a state in which t and L satisfy the relational expression 0.9×t≤L≤1.1×t, given that the total thickness of the overlapping steel plates is t, and the distance of the center interval between top and bottom electrodes is L; and (2) dividing the conduction into a main conduction and an initial conduction preceding the main conduction, and with the initial conduction treated as two stages of conduction, setting the current value (I1) in the first conduction stage of the initial conduction so as to fall into a range satisfying, in a relationship with the current value (Im) of the main conduction, Im×1.1≤I1≤15.0kA, and setting the current value (I2) in the subsequent second conduction stage to be off or to be low-current conduction so as to satisfy 0≤I2≤Im×0.7.

Abstract translation: 当通过重叠包含一个或多个在其表面上具有锌作为其主要成分的镀层的一个或多个钢板的多个钢板而获得的一组板的电阻点焊时，稳定地形成具有足够直径的熔核，而没有任何 通过以下方式飞溅：（1）在t和L满足关系式0.9×t≤L≤1.1×t的状态下，考虑到重叠钢板的总厚度为t，并且 顶部和底部电极之间的中心间隔为L; 和（2）将导通分为主导通和主导通之前的初始导通，并且将初始导通处理为两级导通，将初始导通的第一导通阶段中的电流值（I1）设置为 以与主导通电流Im的关系Im×1.1≤I1≤15.0kA为基准，并将随后的第二导通级中的电流值（I2）设定为截止或为 为低电流导通，满足0≤I2≤Im×0.7。

公开(公告)号：WO2015045421A8

公开(公告)日：2016-03-24

申请号：PCT/JP2014004985

申请日：2014-09-29

Applicant: JFE STEEL CORP

Inventor： TANIGUCHI KOICHI ,  MATSUSHITA MUNEO ,  IKEDA RINSEI

IPC: B23K20/12

CPC classification number: B23K20/122 ,  B23K20/1235 ,  B23K20/22 ,  B23K20/227 ,  B23K20/24 ,  B23K20/26 ,  B23K31/02 ,  B23K2201/18 ,  B23K2203/04 ,  B23K2203/05 ,  C21D1/42 ,  C21D9/50 ,  Y02P10/253

Abstract: A friction stir welding method for joining steel sheets to one another by moving a rotating tool (10) along a section to be joined while inserting and rotating the same into the section to be joined, where two or more steel sheets overlap or abut one another, and using the softening of the steel sheets caused by friction heat between the rotating tool (10) and the steel sheets, and the plastic flow caused by stirring, wherein, according to the present invention, heating devices (4), which are positioned above and below the section to be joined so as to sandwich the same, and positioned to the front in the direction of travel of the rotating tool (10), pre-heat the section to be joined prior to the joining by the rotating tool (10). Consequently, it is possible to join quickly without any risk of joining failures or joining-tool breakage.

Abstract translation: 一种摩擦搅拌焊接方法，用于通过使旋转工具（10）沿着待接合的部分移动并将其旋转到待接合的部分中，使两个或更多个钢板彼此重叠或邻接，从而将钢板彼此接合 并且使用由旋转工具（10）和钢板之间的摩擦热引起的钢板的软化以及由搅拌引起的塑性流动，其中根据本发明，加热装置（4）被定位 在要连接的部分上方和下方夹着它们，并且在旋转工具（10）的行进方向上定位在前部，在通过旋转工具接合之前对要接合的部分进行预热（ 10）。 因此，可以快速加入，而不会有连接故障或连接工具损坏的风险。