What kinds of materials can waterjets cut?
Waterjets can cut a wide variety of non-metallic materials such as paper, foam, rubber, plastic, cardboard, paper, fiberglass and non-wovens. Abrasive waterjets (abrasivejets) can cut hard and thick materials such as stainless steel, aluminum, brass, steel, nickel alloys, marble, granite, glass, tiles, composites and ceramics.
What tolerances can we expect from waterjet cutting?
Cut parts are within 0.051mm (.002")~0.254 mm (.010") accurate. The accuracy you get will depend on the accuracy of the machine, part size and part thickness.
What is the kerf width for waterjet?
The kerf width depends on the thickness of the material being cut and the size of the orifice used. Generally the kerf for pure waterjet is between 0.1mm and 1.1mm, and the kerf for abrasive waterjet between 0.8mm and 1.8mm. The kerf will get larger as the mixing tube wears.
What taper can I expect?
The taper you get is a function of the cut speed. The worst taper you will get will be equal to maximum kerf width at the top (example: 0.44mm) and 0.0mm at the bottom. As you slow down the taper will be reduced until you get parallel sides. Most tapers you see on good quality cuts are 0.076mm~0.102mm on a side.
What kinds of material should be cut by waterjet?
Waterjets are especially suitable for cutting thick, hard, brittle, or heat-sensitive materials.
Why do I want to use waterjet cutting over lasers?
Laser cutting is a very productive process and certainly has its place. Waterjets do have advantages over them in several areas:


There are no thickness limitations.


There are no problems with reflective materials such as brass and aluminum.


There is no heat input, so there is no burning or heat affected zone.


When you change materials, the only thing you change is the cut speed. No gases, optics or anything else to change.


Multiple heads are easily added for increased production.


Maintenance is more specialized and harder to perform on laser equipment.


You can get started with a full system for 1/2 to 1/3 the cost of laser.
Why do I want to use waterjet cutting over Wire EDM?
EDM is extremely accurate but super slow. It also requires an electrically conductive material and does produce a heat affected zone.
Why do I want to use waterjet cutting over Milling?
If you are through-cutting the periphery and holes, rather than blind holes, pockets and threads, abrasive waterjet is typically much faster, easier to program and cheaper. This is largely due to the fact that we cut a part with one pass, we do not have to reduce all the metal to chip form. Many times when a high tolerance part is required, abrasive machining is used to produce a near net part with no heat affected zone ready for final machining. In addition, the scrap from the abrasive jet machining process is usually more valuable because it is in solid form rather than chip form.
Why do I want to use waterjet cutting over Plasma and Oxy Fuel?
Obviously, plasma is a hot process, it adds much heat to the product, leaving a heat affected zone. And the surface finish of the abrasive waterjet is generally better. It leaves no dross on the backside of the part, reducing secondary operations. Abrasive waterjet has no thickness limitation and can be much more closely nested.
What does a waterjet standard package include?
Generally a waterjet cutting system includes an ultrahigh-pressure pump, one to two waterjet cutting heads, an X-Y waterjet cutting table, CNC or PC controller and the associated CAD/CAM software.
Copyright © 2007 by All Rights Reserved
Guangzhou BOAO waterjet cutting tech Co., Ltd