This volume contains papers presented at the 11th International Conference on Jet Cutting Technology, held at St. Andrews, Scotland, on 8-10 September 1992. Jetting techniques have been successfully applied for many years in the field of cleaning and descaling. Today, however, jet cutting is used in operations as diverse as removing cancerous growths from the human body, decommissioning sunsea installations and disabling explosive munitions. The diversity is reflected in the papers presented at the conference. The papers were divided into several main sections: jetting basics -- materials; jetting basics -- fluid mechanics; mining and quarrying; civil engineering; new developments; petrochem; cleaning and surface treatment; and manufacturing. The high quality of papers presented at the conference has further reinforced its position as the premier event in the field. The volume will be of interest to researchers, developers and manufacturers of systems, equipment users and contractors.
Table of ContentsJetting Basics Materials.- Investigation of the pure waterjet-workpiece interaction.- On the modelling of surface waviness produced by abrasive-waterjets.- Jetting Basics Fluid Mechanics.- Attenuator’s volume influence on high pressure’s pulsations in a jet cutting unit.- A theoretical approach to the analysis of gas abrasive two phase flow model for abrasive jet machining.- Measurement of particle and drop velocities in a mixed abrasive waterjet using a forward- scatter LDV system.- A study of the practicality of cavitating water jets.- On an energetic semi-empirical model of hydro-abrasive jet material removal mechanism for control and optimization.- Mining and Quarrying.- Theoretical evaluation of pick tips assisted by high pressure water jets.- Abrasive material in the process of AWJ cutting.- Water jet assisted coal cutting.- Problems on the development of some machines assisted by water-jets in Japanese coal mines.- Room and pillar in-seam excavator and roof supporters (rapiers).- Possibility of using jet cutting technology in Polish mining industry.- Water jet assisted rock cutting the importance of jet position.- Low pressure abrasive waterjet use for precision drilling and cutting of rock.- Civil Engineering.- The feasibility of commercial DIAjet use (a case study).- A systematic study of granite slotting with water jets.- DIAjet use in environmental application.- New Developments.- Powder impulsive water jetter.- Development of phased intensifier for waterjet cutting.- High speed pumps in water jet cutting.- On-line fuzzy recognition of abrasive waterjet nozzle wear.- Improving the competitiveness of abrasive jet cutting.- Petrochem.- Optimisation of the piercing or drilling mechanism of abrasive water jets.- Steel shot entrained ultra high pressure waterjet for cutting and drilling in hard rocks.- Abrasive water-jet drilling.- Cleaning and Surface Treatment.- Investigations on water jet processed concrete.- A study on peening by submerged ultra-high-speed water-jets.- Rehabilitation of the concrete pavements assisted with abrasive waterjets.- Water jet cleaning for in-factory applications.- The recent PREMAJET advance in cutting and derusting technology.- Ultra-high pressure waterjet removal of thermal spray coatings.- Manufacturing.- Development of an abrasive waterjet kerf cutting model for brittle materials.- Recycling capacity of abrasives in abrasive water jet cutting.- Prediction of the geometry of the kerf created in the course of abrasive waterjet machining of ductile materials.- Cutting of steam turbine components using an abrasive waterjet.- On the modeling of abrasive waterjet turning.- Premixed abrasive water jets the influence of important parameters.- Investigations of the dynamics of the surface topography formation during abrasive waterjet machining.- Three-dimensional machining with abrasive waterjets.- A contribution to the study of burr formation in hydro-abrasive jet machining.