Provided are a metal wire rod drawing die that has a longer life than conventional dies and that can prevent damage to a metal wire rod surface and a method for manufacturing the die. In a metal wire rod drawing die (1), a die hole (2) for inserting a metal wire rod is formed. Where Ra1 represents a surface roughness of an inner surface of the die hole from a bearing section (2b) to an approach section (2a) corresponding to an area reduction rate of 30% in an axial direction of the die hole, Ra2 represents a surface roughness of the inner surface of the die hole from the bearing section to the approach section corresponding to the area reduction rate of 30% in a direction orthogonal to the axial direction of the die hole, and Ra3 represents a surface roughness of an inner surface of the bearing section of the die hole in the axial direction of the die hole, the Ra1, the Ra2, and the Ra3 satisfy a relationship represented by 0.14 m>Ra2>Ra1>Ra3.

A method for abrasive flow machining includes moving an abrasive media through a high-aspect passage of a workpiece. Local pressure of the abrasive media is increased at target abrasion surfaces of the high-aspect passage using a passage geometry that is configured to direct flow of the abrasive media into the target abrasion surfaces such that the target abrasion surfaces are preferentially polished by the abrasive media over other, non-targeted surfaces of the high-aspect passage at which the flow of the abrasive media is not directed into.

A method for abrasive flow machining includes moving an abrasive media through a high-aspect passage of a workpiece. Local pressure of the abrasive media is increased at target abrasion surfaces of the high-aspect passage using a passage geometry that is configured to direct flow of the abrasive media into the target abrasion surfaces such that the target abrasion surfaces are preferentially polished by the abrasive media over other, non-targeted surfaces of the high-aspect passage at which the flow of the abrasive media is not directed into.

System for reduction of dimensional end-taper in abrasive blasted tubes has a pressurized chamber maintaining higher air pressure inside the chamber than atmospheric pressure, an air-exit port allowing gases to exit the chamber at a controlled rate, a valve restricting passage of gases from the air-exit port, a pressurized membrane through which the tube passes creating a seal, a gauge port where pressure inside the pressurized chamber is monitored and a media-exit port allowing evacuation of abrasive blast media particles after being expelled from the exit-end of the tube. The system addresses dimensional end-taper as high back pressure at the exit end of the tube reduces velocity of the gases and abrasive particles carried in it, thereby reducing erosion of the inner walls of the tube near its exit end. The system can be employed with a wide range of tube sizes and in combination with several abrasive blasting techniques.

A cluster-tool assembly for abrasive flow machining a plurality of airfoils is disclosed. The cluster-tool assembly comprises an airfoil cluster, the airfoil cluster including a supporting rail and the plurality of airfoils spaced about the supporting rail, and a sacrificial tool unitarily formed with the airfoil cluster, the sacrificial tool including a body and a plurality of prongs extending from the body.

A cluster-tool assembly for abrasive flow machining a plurality of airfoils is disclosed. The cluster-tool assembly comprises an airfoil cluster, the airfoil cluster including a supporting rail and the plurality of airfoils spaced about the supporting rail, and a sacrificial tool unitarily formed with the airfoil cluster, the sacrificial tool including a body and a plurality of prongs extending from the body.

A method for smoothing surface roughness within a passageway is disclosed. In various embodiments, the method comprises flowing an abrasive media through the passageway and positioning a mandrel within the passageway, the mandrel being sized to create a gap between an outer surface of the mandrel and an inner surface of the passageway, wherein the abrasive media is caused to flow through the gap, abrading the inner surface of the passageway.

A method for smoothing surface roughness within a passageway is disclosed. In various embodiments, the method comprises flowing an abrasive media through the passageway and positioning a mandrel within the passageway, the mandrel being sized to create a gap between an outer surface of the mandrel and an inner surface of the passageway, wherein the abrasive media is caused to flow through the gap, abrading the inner surface of the passageway.

There is disclosed a method and apparatus for finishing an internal channel of a component. The method comprises installing the component in a flow circuit which is configured to drive a fluid flow through the internal channel and controlling the fluid flow through the internal channel so that cavitation bubbles are continuously generated by a hydrodynamic effect to erode the internal channel by implosion of the cavitation bubbles. The fluid flow may comprise abrasive media which may abrade the internal channel.

There is disclosed a method and apparatus for finishing an internal channel of a component. The method comprises installing the component in a flow circuit which is configured to drive a fluid flow through the internal channel and controlling the fluid flow through the internal channel so that cavitation bubbles are continuously generated by a hydrodynamic effect to erode the internal channel by implosion of the cavitation bubbles. The fluid flow may comprise abrasive media which may abrade the internal channel.