Reduced scale nozzles for current loads of up to 400 A to be used in a liquid-cooled dual-gas plasma torch. The plasma flow passes through aperture in nozzle in direction. Aperture is divergent and expands in direction of the plasma flow. Aperture is of a conical shape at point, radius shape at point, and elliptic shape at point. Following its narrowest section, aperture expands at angle in direction of the plasma flow. Diameter at the end of aperture is larger than diameter at its beginning. Nozzle is equipped with mounting surface for insertion into the adapter. Nozzle contains seal, which prevents passage of a liquid and gas through the connection between nozzle and the adapter, which also provides attachment to the plasma torch.

Consumables for cutting torches include consumables that define a parallel plasma channel and/or a steep, elongated plasma chamber. Additionally, the consumables may define smooth, rounded edges between different geometries of the plasma channel (e.g., at transitions between straight and angles sections) and/or between the plasma channel and the plasma chamber. That is, the consumables may provide a plasma channel that does not converge, diverge, or define any corners and/or a plasma channel that transitions to the plasma chamber without defining any corners.

A plasma arc torch includes a nozzle body, a nozzle extending from the nozzle body, and a shield cap. An outer retaining cap is attached to the plasma arc torch and secures the shield cap to the plasma arc torch. A sleeve is located radially outward from the outer retaining cap and is configured to receive a flow of pressurized gas. An insulator is located between the outer retaining cap and the sleeve. At least one of the sleeve and the insulator forms a gas flow channel configured to direct a gas flow from the sleeve to a distal portion of the outer retaining cap.

A nozzle assembly for generating an atmospheric plasma jet includes an inlet, through which the jet can be introduced into the nozzle assembly, and a channel connected to the inlet so that the plasma jet introduced is conducted through the channel. Multiple nozzle openings are provided in the channel wall along the channel, through which a plasma jet can exit the assembly. The cross section of the channel in the region of a nozzle opening is shaped in such a way that a virtual medial plane runs between a virtual first tangent plane of the cross section through the nozzle opening and a virtual second tangent plane of the cross section opposite thereto and parallel to the first tangent plane divides the cross section into a first cross-sectional area at the nozzle opening. The cross-sectional surface of the first cross-sectional area differs from the cross-sectional surface of the second.

A silver-copper cutting electrode assembly, and method of manufacture is provided with optimized attributes to allow for improved durability, integrity and manufacturability. An electrode has a silver tip portion which is brazed to a copper body portion where the silver portion and joint have a particular structural relationship.

The present disclosure relates to a thermal plasma processing apparatus capable of efficiently using thermal plasma and securing a reaction time for the thermal decomposition of the processing gas. A Thermal plasma processing apparatus according to an embodiment of the present disclosure includes a torch part in which an arc is generated between a negative electrode and a positive electrode, and in which a processing gas to be thermally decomposed by the arc is injected between the negative electrode and the positive electrode, a power supply part configured to be connected to the negative electrode and the positive electrode and to apply a high voltage between the negative electrode and the positive electrode, and a reaction part configured to communicate with the torch part and to generate turbulence in the processing gas passing through the torch part.

Embodiments of the present invention include a plasma cutting torch and plasma cutting torch components, such as electrodes, cathodes, retainer caps, etc. having a unique physical features, including threads relationships. Embodiments include torch components having modified square thread with a specialized thread configuration including a particular relationship between thread crest and root, and included angles of thread sidewalls.

A torch stinger apparatus may comprise one or more sets of plasma generating electrodes and at least one hydrocarbon injector contained within the electrodes. The electrodes may be concentric. The at least one hydrocarbon injector may be cooled. A method of making carbon particles using the apparatus is also described.

A torch having first and second housing portions may contain multiple adjustment features such as an adjustable length, an adjustable pivot angle of the second housing portion, and an adjustable rotational angle of the second housing portion. The second housing portion may be both slidably and rotationally coupled to the first housing portion. The second housing portion may be configured to slide along a longitudinal axis of the torch to adjust a length of the torch. The second housing portion may be further configured to rotate about the longitudinal axis of the torch to adjust the rotational orientation of the second housing portion with respect to the first housing portion. At least a section of the second housing portion may be configured to pivot about a transverse axis with respect to the first housing portion, the transverse axis being transverse to the longitudinal axis of the torch.

A cathode for a plasma gun includes a main body having a first end and a second end, wherein the first end has a protrusion. A method of using the cathode includes mounting the cathode inside a plasma gun and generating an arc discharge via the protrusion.