Provided is a welding information providing apparatus including a main body provided to be worn by a user, a display unit arranged on the main body and including a display for displaying a welding image to the user, at least one camera unit attached to an outer side of the main body and obtaining welding image frames with respect to a welding operation, and a processor configured to control the display to display the welding image generated based on the welding image frames, wherein the camera unit includes a darkening filter blocking welding light generated due to the welding operation.

The invention relates to gas conducting unit for a gas-cooled plasma cutting torch, wherein the gas-conducting unit is single-part or multi-part tubular or annular. The gas-conducting unit comprises a single-part or multi-part tubular or annular gas-conducting unit body with a longitudinal axis L1. In a wall of the gas-conducting unit body, there are situated at least one opening, which is inclined by an angle δ in a range of ± 15° with respect to the longitudinal axis L1, and at least one second opening, which is inclined radially with respect to the longitudinal axis L1 or which, in a radial plane, is inclined at an angle γ in the range of ± 30°from the radial to the longitudinal axis L1.

Automatic darkening filters are often provided on a protective headgear, where protection from high intensity light is desired. An automatic darkening filter includes a switchable shutter, a shutter control system, a light sensor, and an imaging acquisition device. The switchable shutter is capable of assuming at least a dark state, a light state and an intermediate state.

Described herein are examples of welding simulation systems with observation devices that facilitate the types of group interactions that occur in conventional weld training. In some examples, third party observers may use the observation devices to observe the welding simulation from their own perspectives. In some examples, this may allow for traditional “over the shoulder” observation, and/or group/classroom observation and interaction.

A welding assistance device comprises a welding mask, a welding velocity sensor attached on the welding mask and configured to detect a welding velocity; a visualization device attached to the welding mask and arranged to show a representation of the welding velocity and of consequent heat input to a welder.

Welding helmets, systems, and kits providing real-time fume exposure monitoring and warning capability during an arc welding process. A welding helmet configured to protect the head of a user during a welding process is configured with an intelligent warning apparatus and an air-sampling pick-up and output port. The air-sampling pickup and output port connects to a proximal end of an air sampling tube for sampling breathable air within the welding helmet, and a distal end of the air-sampling tube connects to an air-sampling in-take port of an external aerosol monitoring device. The intelligent warning apparatus communicates with the aerosol monitoring device to receive air sample output data from the aerosol monitoring device, and to process the air sample output data to generate warning data and/or warning signals based on preset exposure level set points and/or exposure warning operating modes.

The present application discloses a wireless projector-type auto-darkening welding helmet comprising: a helmet housing; a headband structure for securing the helmet housing; an auto-darkening filter secured on the helmet housing; a wireless communication module; and a micro-projector which is data-connected to the auto-darkening filter and the wireless communication module, wherein when the auto-darkening filter is in a transparent state, the micro-projector is adaptable to project operating parameters of the auto-darkening filter and/or data received by the wireless communication module, as images, onto a plane in front of the welding helmet such that they can be watched by an operator who wears the welding helmet on his/her head. The present application also discloses a welding apparatus equipped with said wireless projector-type auto-darkening welding helmet.

Described herein are examples of welding simulation systems with observation devices that facilitate the types of group interactions that occur in conventional weld training. In some examples, third party observers may use the observation devices to observe the welding simulation from their own perspectives. In some examples, this may allow for traditional “over the shoulder” observation, and/or group/classroom observation and interaction.

An example head-worn device includes a camera, a display device, weld detection circuitry, and pixel data processing circuitry. The camera generates first pixel data from a field of view of the head-worn device. The display device displays second pixel data to a wearer of the head-worn device based on the first pixel data captured by the camera. The weld detection circuitry determines whether a welding arc is present and generates a control signal indicating a result of the determination. The pixel data processing circuitry processes the first pixel data captured by the camera to generate the second pixel data for display on the display device, where a mode of operation of said pixel data processing circuitry is selected from a plurality of modes based on said control signal.

A welding system includes power supply configured to provide a welding power output. The welding system also includes a welding helmet having an electronic display and an inertial measurement unit. The electronic display is configured to display a representation of the power supply and to display one or more indications of one or more parameters of the power supply. The inertial measurement unit is configured to detect movement of the welding helmet. The welding system also includes a processing system communicatively coupled to the inertial measurement unit and configured to adjust at least one parameter of the one or more parameters based at least in part on the movement of welding helmet.