A system and a method for preventing oil splash in a rotary-type plasma head is provided, including a nozzle unit through which plasma is discharged, a rotating body unit, in which the nozzle unit is attached to and detached from one side of the rotating body unit, the other side of the rotating body unit is connected to a housing unit, and the rotating body unit is configured to drive the nozzle unit to rotate, and an oil cover unit connected to one side of the nozzle unit and configured to surround the rotating body unit from outside, to prevent oil vapor or oil micro-droplets discharged through joints of components of the rotating body unit from leaking outside.

A torch head for a liquid-cooled plasma arc torch is provided. The torch head includes a torch body and a torch insulator, coupled to the torch body, having a substantially non-conductive insulator body. The torch insulator includes (i) a first liquid coolant channel, disposed within the insulator body, configured to conduct a fluid flow from the torch head into a consumable cartridge along a first preexisting flow path, (ii) a first liquid return channel, disposed within the insulator body, configured to return at least a portion of the fluid flow from the cartridge to the torch head along the first preexisting flow path, and (iii) a gas channel, disposed within the insulator body, configured to conduct a first gas flow from the torch head to the cartridge along a second preexisting flow path. The first and second preexisting flow paths are fluidly isolated from each other.

A plasma generator that detects whether a connector of a head is electrically connected to a power cable. The plasma generator includes the head including the connector with a terminal to supply electricity to electrodes that generate plasma by electrical discharge, and a first terminal and a second terminal that are connected to each other; a power cable to supply electricity to the terminal; a cable to transmit a signal to the first terminal; a first ground cable to ground the second terminal; and a detector to detect a signal current that flows in a path from the cable to the first ground cable in accordance with transmission of the signal.

An adapter for a plasma arc torch comprising a torch body is provided. The adapter includes a body defining a longitudinal axis between a proximal end and a distal end and at least one protruding portion extending from the proximal end of the body. The at least one protruding portion is configured to be inserted into a cavity of the torch body to physically engage a switch inside of the cavity. The engagement of the switch is adapted to indicate installation of a consumable component in the plasma arc torch.

A welding-type system with a programmed controller and alert devices for alerting a user as to the impending thermal shutdown of the welding-type system.

A power contact for a liquid-cooled plasma arc cutting system is provided. The cutting system includes a torch body and a lower torch assembly. The power contact comprises a substantially hollow body including an upper portion and a lower portion, and an external surface of the upper portion of the hollow body configured to matingly engage the torch body. The power contact further includes a thread region disposed on an internal surface of the hollow body. The thread region is configured to retain an electrode holder of the lower torch assembly of the plasma arc cutting system to matingly engage the lower torch assembly and secure the lower torch assembly to the torch body.

A plasma arc torch is provided for use in a plasma cutting system. The plasma arc torch includes a torch body for conducting electrical current. The torch body includes a torch tip configured to pass the electrical current to at least one consumable component connected to the tip. The plasma arc torch also includes at least one antenna positioned relative to the torch tip. The antenna is used to wirelessly detect the presence of the at least one consumable component. The plasma arc torch further includes a detection circuit configured to permit passing of the electrical current from the torch tip to the at least one consumable component based on at least the wireless detection.

An adapter for a plasma arc torch comprising a torch body is provided. The adapter includes a body defining a longitudinal axis between a proximal end and a distal end and at least one protruding portion extending from the proximal end of the body. The at least one protruding portion is configured to be inserted into a cavity of the torch body to physically engage a switch inside of the cavity. The engagement of the switch is adapted to indicate installation of a consumable component in the plasma arc torch.

A torch head for a liquid-cooled plasma arc torch is provided. The torch head includes a torch body and a torch insulator, coupled to the torch body, having a substantially non-conductive insulator body. The torch insulator includes (i) a first liquid coolant channel, disposed within the insulator body, configured to conduct a fluid flow from the torch head into a consumable cartridge along a first preexisting flow path, (ii) a first liquid return channel, disposed within the insulator body, configured to return at least a portion of the fluid flow from the cartridge to the torch head along the first preexisting flow path, and (iii) a gas channel, disposed within the insulator body, configured to conduct a first gas flow from the torch head to the cartridge along a second preexisting flow path. The first and second preexisting flow paths are fluidly isolated from each other.

In some aspects, material processing head can include a body; an antenna disposed within the body; a first tag, associated with a first consumable component, disposed within a flux communication zone of the body at a first distance from the antenna, the first tag having a first resonant frequency; and a second tag, associated with a second consumable component, disposed within the flux communication zone of the body at a second distance from the antenna, the second tag having a second resonant frequency that is different than the first resonant frequency, where the first and second resonant frequencies are tuned based upon at least one of: i) a difference between the first distance and the second distance; or ii) a characteristic (e.g., shape) of the flux communication zone in which the first tag and/or the second tag is disposed.