A waterjet nozzle is provided for deflashing a leadless package device. The waterjet nozzle has a central core having a conically shaped passage between a nozzle inlet, lying in a first plane, and a nozzle outlet, lying in a second plane. The nozzle includes a groove, in the waterjet nozzle, above a third plane defining an end of the waterjet nozzle, along a first line in the third plane. A tube connects the nozzle outlet to the groove. The nozzle includes a flange, lying below the third plane along a second line, in the third plane, intersecting the first line. The waterjet nozzle may be used to deflash a leadframe package by inserting the flange from a waterjet nozzle into a singulation cut on a lead frame; and injecting a waterjet through the conically-shaped passage from the nozzle inlet through the nozzle outlet.

A waterjet nozzle is provided for deflashing a leadless package device. The waterjet nozzle has a central core having a conically shaped passage between a nozzle inlet, lying in a first plane, and a nozzle outlet, lying in a second plane. The nozzle includes a groove, in the waterjet nozzle, above a third plane defining an end of the waterjet nozzle, along a first line in the third plane. A tube connects the nozzle outlet to the groove. The nozzle includes a flange, lying below the third plane along a second line, in the third plane, intersecting the first line. The waterjet nozzle may be used to deflash a leadframe package by inserting the flange from a waterjet nozzle into a singulation cut on a lead frame; and injecting a waterjet through the conically-shaped passage from the nozzle inlet through the nozzle outlet.

An abrasive water-jet cutting machine, comprising pumping means, fluidly connectable to a water source, a cutting head, comprising a mixing chamber, a dispensing system of powdered abrasive material, comprising a tank, a supply tube and an actuator interposed between the tank and the supply tube, which delivers the powdered abrasive material contained in the tank into the mixing chamber, through the supply tube; wherein the cutting head mixes, in the mixing chamber, the abrasive material with the water jet forming a water-abrasive material mixture jet, and said cutting head delivers the water-abrasive material mixture jet; wherein the powdered abrasive material delivered into the mixing chamber is homogeneously dispersed in suspension in a water-based gelatinous fluid; and wherein the actuator is a peristaltic pump.

A disposable seal carriage for use with a liquid jet cutting system can include a body having a first end portion, a longitudinal axis, and a second end portion opposite the first end portion along the longitudinal axis. The first end portion can have a first outer width as measured perpendicular to the longitudinal axis, the second end portion can have a second outer width as measured perpendicular to the longitudinal axis, and the first outer width can be greater than the second outer width. The seal carriage can further include a flexible region extending through at least a portion of the body along a portion of the longitudinal axis. In some embodiments, the body includes a plurality of exterior projections positioned between the first and second end portions.

A disposable seal carriage for use with a liquid jet cutting system can include a body having a first end portion, a longitudinal axis, and a second end portion opposite the first end portion along the longitudinal axis. The first end portion can have a first outer width as measured perpendicular to the longitudinal axis, the second end portion can have a second outer width as measured perpendicular to the longitudinal axis, and the first outer width can be greater than the second outer width. The seal carriage can further include a flexible region extending through at least a portion of the body along a portion of the longitudinal axis. In some embodiments, the body includes a plurality of exterior projections positioned between the first and second end portions.

A device and a method for the surface treatment of a material by a pressurized jet of liquid nitrogen, supercritical cryogenic nitrogen or hypercritical cryogenic nitrogen that may be loaded with particles, use a device that includes a mixing chamber (10) closed by a downstream wall with an outlet orifice, and a diffusion focusing barrel (20) having an inlet and an outlet, the inlet being designed to be fastened to the mixing chamber (10) while being in fluid contact with the outlet orifice of the mixing chamber (10), the pressurized jet of nitrogen having to pass through the focusing barrel from the inlet to the outlet. The diffusion focusing barrel (20) includes a hollow tube having three successive portions placed one after the other, namely a convergent portion (21) located on the side of the inlet opening of the diffusion focusing barrel and whose inner face, considered in the direction of flow of the nitrogen jet, is convergent, a neck (22) whose inner face is cylindrical, and a divergent portion (23) ending in the outlet of the diffusion focusing barrel and whose inner face, considered in the direction of flow of the nitrogen jet, is divergent.

A device and a method for the surface treatment of a material by a pressurized jet of liquid nitrogen, supercritical cryogenic nitrogen or hypercritical cryogenic nitrogen that may be loaded with particles, use a device that includes a mixing chamber (10) closed by a downstream wall with an outlet orifice, and a diffusion focusing barrel (20) having an inlet and an outlet, the inlet being designed to be fastened to the mixing chamber (10) while being in fluid contact with the outlet orifice of the mixing chamber (10), the pressurized jet of nitrogen having to pass through the focusing barrel from the inlet to the outlet. The diffusion focusing barrel (20) includes a hollow tube having three successive portions placed one after the other, namely a convergent portion (21) located on the side of the inlet opening of the diffusion focusing barrel and whose inner face, considered in the direction of flow of the nitrogen jet, is convergent, a neck (22) whose inner face is cylindrical, and a divergent portion (23) ending in the outlet of the diffusion focusing barrel and whose inner face, considered in the direction of flow of the nitrogen jet, is divergent.

A method and apparatus produce an enhanced blast stream which may be directed at a workpiece. The enhanced blast stream has higher energy allowing the blast stream to remove difficult to remove coatings from substrates. A heated flow is combined with an entrained particle flow and expelled through a nozzle. The heated flow results in more energy being imparted to the coating.

A method and apparatus produce an enhanced blast stream which may be directed at a workpiece. The enhanced blast stream has higher energy allowing the blast stream to remove difficult to remove coatings from substrates. A heated flow is combined with an entrained particle flow and expelled through a nozzle. The heated flow results in more energy being imparted to the coating.

A collecting and discharge device for the cutting jet of a fluid jet cutting system, comprises a cutting jet collector and a discharge for the cutting medium flow collected the cutting jet collector. The cutting jet collector has a jet outflow channel with an inlet region for introducing the cutting jet. The cutting jet is in flow connection with an outlet region via an outflow line. The jet outflow channel leads into a suction chamber disposed underneath the outlet region, said suction chamber having an enlarged cross section in the outlet region compared with the cross section of the jet outflow channel. The suction chamber additionally connects the jet outflow channel with the outflow line and with a suction channel as well as being otherwise closed. The suction channel provides suction at a suction opening forming a suction mouth in a suction region surrounding the inlet region of the jet outflow channel.