A particle diameter distribution of shot media before forming an operating mix is bimodal and substantially continuous, and both a first particle group corresponding to a first peak and a second particle group corresponding to a second peak are aggregates of particles in a shape having an angular part.

A particle diameter distribution of shot media before forming an operating mix is bimodal and substantially continuous, and both a first particle group corresponding to a first peak and a second particle group corresponding to a second peak are aggregates of particles in a shape having an angular part.

Provided is a method for manufacturing a magnetostrictive torque sensor shaft mounting a sensor portion of a magnetostrictive torque sensor. The method includes conducting heat treatment on a shaft material including chrome steel or chrome-molybdenum steel by carburizing, quenching and tempering, and conducting shot peening on the shaft material after the heat treatment at least on a position where the sensor portion is to be mounted. The shot peening is conducted by firing shot with a particle size of not less than 0.6 mm and a Rockwell hardness of not less than 60 at a jet pressure of not less than 0.4 MPa for a jet exposure time of not less than 2 minutes.

Provided is a method for manufacturing a magnetostrictive torque sensor shaft mounting a sensor portion of a magnetostrictive torque sensor. The method includes conducting heat treatment on a shaft material including chrome steel or chrome-molybdenum steel by carburizing, quenching and tempering, and conducting shot peening on the shaft material after the heat treatment at least on a position where the sensor portion is to be mounted. The shot peening is conducted by firing shot with a particle size of not less than 0.6 mm and a Rockwell hardness of not less than 60 at a jet pressure of not less than 0.4 MPa for a jet exposure time of not less than 2 minutes.

An abrasive media blaster assembly includes a container to hold at least one abrasive media, an external air source to provide a compressed air supply, a reservoir to hold water and rust inhibitor solution and a venturi blaster gun. The venturi blaster gun comprises an exterior nozzle, a media blaster block and a trigger with a handle. The fittings in the media blaster block create a venturi effect and draw the water and rust inhibitor solution so as for it to mix with the abrasive media where the dustless blaster sprays the mix to remove surface finishes from a metal surface and simultaneously provides a rust inhibitor to the surface, thereby allowing the device to be capable of performing any one, two or all of dry media blasting, slurry blasting, and water blasting.

An electrostatic spray application apparatus and method for producing an electrostatically charged and homogeneous CO.sub.2 composite spray mixture containing an additive and simultaneously projecting at a substrate surface. The spray mixture is formed in the space between CO.sub.2 and additive mixing nozzles and a substrate surface. The spray mixture is a composite fluid having a variably-controlled aerial and radial spray density comprising pressure- and temperature-regulated propellant gas (compressed air), CO.sub.2 particles, and additive particles. There are two or more circumferential and high velocity air streams containing passively charged CO.sub.2 particles which are positioned axis-symmetrically and coaxially about an inner and lower velocity injection air stream containing one or more additives to form a spray cluster. The axis-symmetrical CO.sub.2 particle-air streams are passively tribocharged during formation, and the spray clustering arrangement creates a significant electrostatic field and Coanda air mass flow between and surrounding the coaxial flow streams.

A method for manufacturing a compressor scroll that appropriately impinges cavitation bubbles on target regions of a scroll. The method includes the step of water jet peening by jetting cavitation bubbles generated underwater by a water jet at a first side of an end plate (13A) of the scroll (13), with a center (P1, P2, P3) of the cavitation bubbles being offset from a center (O) of the spiral shape of a wall portion (13B) on the end plate (13A) and the step portion (13Aa) and the stepped portion (13Ba) positioned at an outer peripheral portion of the cavitation bubbles (C).

A method of producing a composite component (10) having a thermal protection layer (24) including the steps of: providing a composite component (10) with a primary fibre material (12) and with a primer layer (16) of alternative fibre material overlying the primary fibre material (12) at an area of the composite component intended for high thermal exposure, said area defining a thermal exposure area (18); applying a metallic bonding layer (22) to the primer layer (16) of the thermal exposure area (18) to create a bonding surface at the thermal exposure area (18); and applying a ceramic thermal protection layer (24) to the bonding surface for insulating the thermal exposure area (18) and/or for reflecting external thermal energy, the thermal protection layer (24) having a higher melting point than the metallic bonding layer (22).

A method of producing a composite component (10) having a thermal protection layer (24) including the steps of: providing a composite component (10) with a primary fibre material (12) and with a primer layer (16) of alternative fibre material overlying the primary fibre material (12) at an area of the composite component intended for high thermal exposure, said area defining a thermal exposure area (18); applying a metallic bonding layer (22) to the primer layer (16) of the thermal exposure area (18) to create a bonding surface at the thermal exposure area (18); and applying a ceramic thermal protection layer (24) to the bonding surface for insulating the thermal exposure area (18) and/or for reflecting external thermal energy, the thermal protection layer (24) having a higher melting point than the metallic bonding layer (22).

A composition that penetrates surfaces of equipment for use with an uncured cementitious material, such as uncured concrete includes an aqueous solution with colloidal silica. Pretreatment of a surface with such an aqueous solution may reduce or eliminate adhesion of uncured cementitious material to the surface. A composition that cleans hardened and/or cured cementitious material from the surfaces of such equipment also includes an aqueous composition with colloidal silica. Hardened and/or cured cementitious material may be removed from equipment surfaces by applying the hardened and/or cured cementitious material with the aqueous solution to soften the cementitious material and optionally abrading the softened cementitious material to mechanically remove the same from the equipment surfaces. Systems for removing hardened and/or cured cementitious material from the surfaces of equipment capable of use with uncured cementitious material include an aqueous solution with colloidal silica and a mechanical removal component.