Tool Performance Under Ultrasonic Reaming

Drilling and Reaming

Ultrasonic sludge pretreatment under pressure.

The objective of this work was to optimize the ultrasound (US) pretreatment of sludge. Three types of sewage sludge were examined: mixed, secondary and secondary after partial methanisation ("digested" sludge). Thereby, several main process parameters were varied separately or simultaneously: stirrer speed, total solid content of sludge (TS), thermal operating conditions (adiabatic vs. isotherm...

one and two dimensional ultrasonic vibration tool

this research is carried out to design and manufacturing of lathe vibration tool and their tests. firstly, one-dimensional vibration tool is designed and made of the bending vibration mode. one-dimensional vibration tool with half piezoelectric rings is considered to excite the bending mode of tool. structure of vibration tool is designed in abaqus software about 20 khz and then is made with re...

[Intramedullary reaming in Ribbing disease].

Ribbing disease is a rare benign sclerosing bone dysplasia. It presents with an increased bone density at the diaphysis with cortical endosteal/periosteal thickening and affects predominantly the lower extremities. We report a case of a 28 year-old woman with a this condition in her tibia that occluded the medullary cavity, with severe pain that could not be relieved with anti-inflammatory ther...

Reproducibility of a reaming test

The reproducibility of a reaming test was analysed to document its applicability as a performance test for cutting fluids. Reaming tests were carried out on a drilling machine using HSS reamers. Workpiece material was an austenitic stainless steel, machined using 4.75 m·min cutting speed and 0.3 mm·rev feed. A mineral straight oil and a water-based lubricant at two different oil concentrations ...