Patent DE-102009052464-A1 (DE)
Title: Welding together tapes of different materials by electron-beam along its longitudinal sides, comprises automatically controlling the position of melt bath and weld seam depth and positioning the transfer field over guidance position
Inventor: FURCHHEIM BODO
IPC: H01J37/30
Filed: 2009-11-09
Abstract: The method for welding together tapes (3) of different materials by electron-beam (5) along its longitudinal sides, comprises automatically controlling the position of melt bath and weld seam depth and positioning the transfer field over guidance position of the tapes to be connected and/or constantly holding the vacuum in recipients (2), where the energy transmission field is automatically shifted diagonally to the tape feeding direction in which the penetration electrons are detected through an electron absorber (7) and are compared with an actual value. The method for welding together tapes (3) of different materials by electron-beam (5) along its longitudinal sides, comprises automatically controlling the position of melt bath and weld seam depth and positioning the transfer field over guidance position of the tapes to be connected and/or constantly holding the vacuum in recipients (2), where the energy transmission field is automatically shifted diagonally to the tape feeding direction in which the penetration electrons are detected through an electron absorber (7) and are compared with an actual value. The position of the energy transmission field is corrected and adapted and/or optimized after the detection of the penetration electrons, and/or the electron beam current, the lens and/or the stigmators are automatically varied. The adjustment parameter is determined for carrying out the welding process in such a way that it is optimized after the time-temperature-transformation properties of the melt. The energy transmission field is positioned directly over joining position (6). The energy transmission field measurement and the volume speed are set to zero in order to produce a point for marking of the energy enter. The position of the pointers is observed related to the joining position in optical or electrooptical manner and/or the position of the pointers is observed over the joining position in optical or electro-optical manner. The energy transmission figure is retrieved over the joining position in the position of the pointers and the welding process is controlled. An error signal is produced during exceeding the actual value for error output. The position correction of the energy transmission field is carried out through the deflection control after the comparison with the actual value. The position correction is carried out electromagnetically through the axis for displacing the electron gun. A mathematical model repeatedly passes and a parameter is changed with given limit. The measuring result is determined with the actual function of the compared correction value. The ions are removed through the electron absorber arranged parallel to the electron beam from the energy field. An independent claim is included for a device for welding together tapes of different materials by electron-beam along its longitudinal sides.