The present disclosure includes a shaft and spindle assembly for retaining a part in a part processing assembly. The part is retained on the shaft via a downward force from a part hold-down assembly. The shaft is retained in the spindle assembly that is coupled to a turntable of the part processing assembly. The shaft includes an annular step that abuts against a portion of the spindle assembly to block downward movement of the shaft when the downward force is applied. In this way, the part is retained in a precise location relative to processing nozzles of the part processing assembly even after multiple parts are held down by the part hold-down assembly and processed.

A medical product and a method of surface treatment and/or manufacture of the medical product. The method includes the step of electrochemically etching the medical product. The medical product can include a metal or alloy and have one or more of the following features: a pitting corrosion potential of 100 mV to 1200 mV, a contact angle of 90° to 140°, and a passive layer having a thickness of 1 nm to 10 nm that coats at least sections of the surface of the medical product.

A band saw blade includes a body part made into a loop in an endless form at a joint part formed by welding, a blade part formed on one edge side of the body part, a first shot blasted part formed on at least one side plane of the body part, a second shot blasted part formed in a part of the first shot blasted par and visually recognized as a range having a surface state different from a surface state of the first shot blasted part, and an information part that is provided to the second shot blasted part and from which information can be acquired.

A method for regulating the flow of media that provides a valve having a first pole piece and a second pole piece that are separated by a working gap through which media may flow. The pole pieces direct a first magnetic field through the working gap. A coil generates a second magnetic field when electrical current is passed through the coil and that second magnetic field is capable of opposing the first magnetic field. The current in the coil is set at a first level that corresponds to a desired low rate of media through the working gap. The actual flow rate that results from the first duty cycle of current in the coil is compared to a desired flow rate and the current can be adjusted if the actual flow rate is different than the desired flow rate.

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.

Disclosed herein is a system for surface treating an internal surface of a part. The system comprises a tank within which the part is locatable. The system also comprises a fluid within the tank and capable of submersing the part when the part is located within the tank. The system further comprises a nozzle submersed in the fluid and configured to generate a stream of cavitated fluid directed in a first direction. The system additionally comprises a deflection tool submersed in the fluid and comprising a deflection surface that redirects the stream of cavitated fluid from the first direction to a second direction. The first direction is away from the internal surface of the part and the second direction is toward the internal surface of the part.

Disclosed herein is a system for surface treating an internal surface of a part. The system comprises a tank within which the part is locatable. The system also comprises a fluid within the tank and capable of submersing the part when the part is located within the tank. The system further comprises a nozzle submersed in the fluid and configured to generate a stream of cavitated fluid directed in a first direction. The system additionally comprises a deflection tool submersed in the fluid and comprising a deflection surface that redirects the stream of cavitated fluid from the first direction to a second direction. The first direction is away from the internal surface of the part and the second direction is toward the internal surface of the part.

The present invention is to provide an antibacterial molded article that can increase options for the material and shape of the molded article, and a method for manufacturing the same. The object is achieved by an antibacterial molded article containing a plastic molded article, the plastic molded article having a rough region having an arithmetic average roughness Ra of a roughness curve in accordance with JIS B 0601 (2013) of 0.14 μm or greater and 0.72 μm or less provided on a surface with which bacteria can come into contact.

The present invention is to provide an antibacterial molded article that can increase options for the material and shape of the molded article, and a method for manufacturing the same. The object is achieved by an antibacterial molded article containing a plastic molded article, the plastic molded article having a rough region having an arithmetic average roughness Ra of a roughness curve in accordance with JIS B 0601 (2013) of 0.14 μm or greater and 0.72 μm or less provided on a surface with which bacteria can come into contact.

A mechanical joint according to which a gasket includes wipers, or protrusions, on an internal surface of the gasket, on an external surface of the gasket, or on both internal and external surfaces of the gasket.