Waterjet Cutting Articles

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Waterjet accelerates pace, provides speed secret

May 8, 2007 | By Kate Bachman

Joe Gibbs Racing sports three Nextel Cup teams, winning three Cup championships in a seven-year period. Its drivers Tony Stewart, Denny Hamlin, and J.J. Yeley are well-known race stars. Preparing the cars for each week's race is literally a race between races, as new components-speed secrets-are engineered and fabricated between Sunday night and Thursday. The company relies on a Flow waterjet to accelerate its manufacturing pace to meet the grueling deadlines

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Economic considerations when purchasing a jet cutting machine

February 13, 2007 | By Dr. John H. Olsen

Thinking about purchasing a jet cutting system? Many factors should be considered before deciding which system to buy. This article discusses fixed and operating costs and productivity and provides the framework for making an intelligent buying decision.

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Achieve peak waterjet performance by optimizing components

November 7, 2006 | By Eric Chalmers

A waterjet systems comprises an ultra-high-pressure pump, CNC machine, and one or more cutting heads. How these components are set up and optimized determines the waterjet system's performance.

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Machine components you can fabricate with an abrasive jet

October 10, 2006 | By Dr. John H. Olsen

Many machine components formerly made with conventional machining techniques now can be made easily and cost-effectively with abrasive waterjet cutting. This article discusses some of these components. It also gives examples of abrasive waterjet-produced signs and labels that can be used to enhance your products.

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Job diversity through a waterjet

June 13, 2006 | By Dan Davis

Pacific Metal Cutting of Placentia, Calif., wasn't struggling when it bought its first waterjet in May 2004. After two years of waterjet ownership and the addition of a second table, the metal cutter is struggling to keep up with new business.

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What you need to know about high-pressure equipment

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.

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Bernie and the jet

April 11, 2006 | By Dan Davis

Jay Leno's car collection, housed at the Big Dog Garage in Burbank, Calif., is not meant to collect dust. These cars are to be driven. Bernard Juchli is in charge of that, and now he has a waterjet to help him fabricate hard-to-find or non-existent parts and to keep the cars on the road.

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American Fabricator

April 11, 2006 | By Kate Bachman

How do you get to Hollywood? Ride a motorcycle when you're 3 years old, start welding at 8, and rebuild a car engine at 9—if you want to be the lead fabricator on American Chopper, that is, one of the most popular metal fabrication-as-entertainment reality cable TV shows airing on the Discovery Channel. Paul Sr. and Paul Jr. Teutul are the highly visible father-son pair usually featured in the media. But it is Vincent DiMartino who is the fabricator behind the bikes, the muscle behind the biceps, the grin behind the guns. Vinnie surmised that the automated waterjet from Flow Intl., Kent, Wash., is probably the most sophisticated equipment he uses, and that much of what he fabricates for the choppers is cut on OCC's waterjet.

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Fixturing for abrasive jet machining

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.

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Trailblazing with waterjet

November 8, 2005 | By Sonja Bellem

For Johnson Enterprises of New Brunswick, Canada, the waterjet cutting system with shuttle table has opened the door to business opportunities more diverse than the materials it can process.

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Rising to great heights in Great Falls

April 11, 2005 | By Kate Bachman

When Waterjet Extreme Technologies (WET), Great Falls, Mont., was asked to bid on a large and lofty fabrication project as part of the Great Falls International Airport redesign, co-owners John Kramarich and Rip Rippetoe viewed the inherent challenges as opportunities to explore the limits of their capabilities while dealing with a limited budget.

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Abrasive jet mechanics

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...

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Where abrasive waterjets shine

September 14, 2004 | By Dr. Mohamed Hashish

Abrasive waterjet's cold-cutting and omni-directional capabilities make it especially well-suited to cutting unusual shapes out of exotic and heat-sensitive materials. Also, because abrasive waterjet is a cold-cutting process, it does not create a heat-affected zone (HAZ), which can make it more difficult to execute downstream processes, such as welding.

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Fan cut with waterjet

Designing for abrasive waterjet fabrication

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.

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Improving waterjet cutting precision by eliminating taper

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...

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