May 9, 2006 | By Dr. John H. Olsen
High-pressure abrasive and waterjet cutting systems have unique properties that must be understood to maximize performance and ensure safety. This article discusses the principles of water compressibility and pressurization, metal fatigue, high-pressure plumbing, seals, valves, and making and installing ultrahigh pressure fittings.
January 10, 2006 | By Dr. John H. Olsen
Clamping the workpiece against sideways motion and weighting it against vertical motion will prevent part loss and improve part quality in waterjet machining. This article offers practical fixturing suggestions for both cutting from flat sheet and adding features to existing parts.
July 12, 2005 | By Dr. John H. Olsen
Triplex Systems found that using abrasive waterjet cutting technology combined with a hole-and-tab technique to fabricate its products helped eliminate machining operations and reduced costs.
March 8, 2005 | By Dr. John H. Olsen
Figure 1Abrasive jet users need in-depth knowledge of nozzle mechanics, either for practical reasons, or simply to have the satisfaction of knowing what their machines really are doing. Two types of information fabricators need are generally known accepted physical laws, and empirical data...
May 4, 2004 | By Dr. John H. Olsen
Thinking ahead during the design stage of a fabrication always saves manufacturing costs later. This is also true for the parts cut with a precision waterjet. Part production time, assembly time, fixturing, and weld preparation time all can be saved. Even design time can be saved by following drafting standards that permit cutting directly from the design's CAD file.
January 13, 2004 | By Dr. John H. Olsen
The balance between waterjet cutting production rate and part precision always has been difficult to achieve because of the jet's complex behavior. Because its shape at any point along the tool path is a result of multiple independent variables — including the speed and acceleration with...
September 10, 2003 | By Dr. John H. Olsen
This is the last of four articles intended to help a prospective buyer evaluate the wide range of abrasive jet machinery on the market. The first article covers the abrasive jet process itself in comparison with other cutting processes to help the prospective buyer understand the pros and cons of...
June 26, 2003 | By Dr. John H. Olsen
Editor's Note: This article is the third in a series intended to help a prospective user evaluate abrasive jet machinery. The first article, Buying an abrasive jet machine, compared the abrasive jet process with other cutting processes. The second article, Software for abrasive waterjet machining,...
March 13, 2003 | By Dr. John H. Olsen
Software plays a key role in abrasive jet machining. Infact, it is only through software that precision abrasive jet machining truly is possible. Some of the most significant advancements in the industry have been in software.
April 15, 2002 | By Dr. John H. Olsen
Abrasive waterjet cutting may or may not be right for your particular application; but, knowing all you can about the process and its pros and cons can help you make that decision better.