Abstract: Disclosed is an ultra-fast laser scanning assisted integrated welding method for micro casting and forging, including the following steps: Step one, preparing liquid metal in a melt crucible; Step two: setting a heating temperature of a guide tube; Step three: calculating an amount of the liquid metal to be filled per unit time; Step four: setting a distance between a micro casting and forging area and a liquid metal outflow area; Step five: designing a wobbling mode of ultra-fast laser scanning, with a wobbling amplitude, a wobbling frequency and a laser power, and meanwhile setting a shielding gas flow rate; Step six: checking whether devices are in good working conditions or not; Step seven: setting start-stop signals of a crucible system, an ultrafast laser auxiliary system, and a micro-forging system when a welding trajectory changes, respectively; and Step eight: turning on the device to start welding.

Abstract: A water-jet guided laser machining device and method under multiple combinations of water and air is provided. An auxiliary atmosphere input line is arranged between a laser-water coupling device and an annular water-jet device. An auxiliary atmosphere input through the auxiliary atmosphere input line is sprayed from an annular gas nozzle to form an auxiliary airflow layer. A nozzle is arranged at a lower end of the laser-water coupling device. An annular liquid nozzle is arranged at a bottom of the annular water-jet device. The laser-water coupling device is configured for coupling a laser beam with an internal liquid to spray a single water jet from the nozzle. The annular water-jet device is configured for spraying the internal liquid from the annular liquid nozzle to form an annular water curtain around a laser guiding water jet. The auxiliary airflow layer is enclosed in the annular water curtain.

Abstract: There is provided a welding wire remaining amount detection and warning system which relates to the welding field. The present disclosure aims to solve the problem of inability to detect the welding wire remaining amount in the laser composite welding makeup device. In the present disclosure, in the welding wire remaining amount detection process, based on electromagnetic induction principle, the equivalent inductance of the coil decreases along with decrease of the welding wire. The change of the equivalent inductance of the coil is converted by the LC oscillator circuit into a directly-collectable frequency change signal. By detecting the value of the current frequency, the current welding wire remaining amount can be determined.

Abstract: There is provided a welding wire remaining amount detection and warning system which relates to the welding field. The present disclosure aims to solve the problem of inability to detect the welding wire remaining amount in the laser composite welding makeup device. In the present disclosure, in the welding wire remaining amount detection process, based on electromagnetic induction principle, the equivalent inductance of the coil decreases along with decrease of the welding wire. The change of the equivalent inductance of the coil is converted by the LC oscillator circuit into a directly-collectable frequency change signal. By detecting the value of the current frequency, the current welding wire remaining amount can be determined.

Abstract: Disclosed is a hybrid welding method. The method includes the following steps: processing form of a groove is determined; defocus amounts and laser powers of leading laser and trailing laser, as well as welding currents and welding speed of leading arc and trailing arc are set; a distance between the leading laser and the leading arc is set, a distance between the trailing laser and the trailing arc is set, and a distance between the leading laser and the trailing laser is set; a time sequence of start-stop signals for devices when a welding trajectory changes is set, start signals for the devices are triggered at a same position, and stop signals are also triggered at a same position; whether the devices are in normal working conditions or not is checked; the devices are turned on to start welding.

Abstract: Disclosed are a narrow gap laser-TIG arc hybrid welding apparatus and method. The welding apparatus includes a welding gun body, a swing welding gun assembly, a welding wire feeding and heating assembly, and a gas conveying assembly; the swing welding gun assembly includes a welding gun rotating shaft, a stepper motor, a large gear, a pinion, an upper insulating sleeve, a lower insulating sleeve, a tungsten electrode clamp, and a tungsten electrode; the stepper motor is mounted on a motor connection seat; the pinion is mounted on the output shaft of the stepper motor; the large gear is mounted on the welding gun rotating shaft; the pinion is engaged with the large gear; the welding gun rotating shaft is mounted and positioned on the welding gun body; the tungsten electrode is mounted at the tail end of the welding gun rotating shaft by means of the tungsten electrode clamp.

Abstract: Disclosed are a narrow gap laser-TIG arc hybrid welding apparatus and method. The welding apparatus includes a welding gun body, a swing welding gun assembly, a welding wire feeding and heating assembly, and a gas conveying assembly; the swing welding gun assembly includes a welding gun rotating shaft, a stepper motor, a large gear, a pinion, an upper insulating sleeve, a lower insulating sleeve, a tungsten electrode clamp, and a tungsten electrode; the stepper motor is mounted on a motor connection seat; the pinion is mounted on the output shaft of the stepper motor; the large gear is mounted on the welding gun rotating shaft; the pinion is engaged with the large gear; the welding gun rotating shaft is mounted and positioned on the welding gun body; the tungsten electrode is mounted at the tail end of the welding gun rotating shaft by means of the tungsten electrode clamp.

Abstract: The present application discloses example methods, computer-readable mediums, and systems for controlling service operation risks. In one example, method, an application program on an end-user device monitors a service operation initiated by a user for invoking offline service information. After the service operation is monitored, it is determined whether the service operation is a risky operation based on recorded historical operation data and at least one of a predetermined risk evaluation rule or a risk evaluation model. In response to determining that the service operation is a risky operation, a refusal to invoke the offline service information is performed. In response to determining that the service operation is not a risky operation, the offline service information is invoked.

Abstract: The present application discloses example methods, computer-readable mediums, and systems for controlling service operation risks. In one example, method, an application program on an end-user device monitors a service operation initiated by a user for invoking offline service information. After the service operation is monitored, it is determined whether the service operation is a risky operation based on recorded historical operation data and at least one of a predetermined risk evaluation rule or a risk evaluation model. In response to determining that the service operation is a risky operation, a refusal to invoke the offline service information is performed. In response to determining that the service operation is not a risky operation, the offline service information is invoked.

Abstract: The present application discloses example methods, computer-readable mediums, and systems for controlling service operation risks. In one example, method, an application program on an end-user device monitors a service operation initiated by a user for invoking offline service information. After the service operation is monitored, it is determined whether the service operation is a risky operation based on recorded historical operation data and at least one of a predetermined risk evaluation rule or a risk evaluation model. In response to determining that the service operation is a risky operation, a refusal to invoke the offline service information is performed. In response to determining that the service operation is not a risky operation, the offline service information is invoked.