Water Jet Cutting Services


Metals Centre offers water jet cutting services to the Gauteng area, South Africa and beyond, cutting a wide range of materials to precision standards.

Metals Centre are specialist metal suppliers providing  complete water jet cutting services to accurately cut materials for your next project.

Water Jet Cutting Services - Understanding The Process


Take a look at these
Metal Water Jet Cutting Samples

  1. How Do Waterjet Cutting Machines Work?.


  2. Waterjet Cutting Versus Laser Cutting.


  3. What Are Typical Tolerances That One Can Expect From Waterjet Cutting if using our water jet cutting services?


  4. What Is The Thickest Material It Can Cut?


  5. Is There Anything That Waterjet Cutters Cannot Cut?


  6. How Thick Is The Kerf (The Actual Width Of The Cut)?


  7. What Is The Minimum Diameter Radius You Can Cut?


  8. What Taper Can Be Expected?


  9. Is Any Fixturing Required?



1. How Do Waterjet Cutting Machines Work?

Whether you are a manufacturing engineer or a DIY hobbyist, it pays to remain familiar with all available manufacturing processes.

Lets discuss Waterjet cutting services - how and where it can assist you in your manufacturing process?

Basically, Waterjet cutting is a cutting process whereby a highly pressured jet of abrasive water removes material. Much the same as water erosion does to the ground it washes over.

The high pressure water usually has an abrasive material called garnett included to it which aids in abrasively removing material from the piece being cut.

This effective cutting action is produced by pressurizing the abrasive water up to 60 000psi, and then forcing it through a tiny opening.

A waterjet cutting process is suitable for cutting a wide variety of materials with CNC accuracy. Some of the more typical part tolerances vary from between 0.3 and 0.4mm.

The result of mixing abrasive particles like garnett into the high pressure jet stream, is an "abrasive waterjet" that will cut through almost all hard materials like metal, composites, glass and stone.

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2. LETS LOOK AT WATER JET CUTTING VERSUS LASER CUTTING.

The laser cutting process is very efficient fast and overall productive process indeed. However the waterjet certainly holds certain important advantages over the laser.

With a waterjet cutter there is very little limitation when it comes to the thickness of material which can be cut. On the other hand a typical 1500 watt CO2 laser finds its ceiling at around 0.625" thick steel plate. The waterjet has no problem cutting reflective material such as aluminum, copper and brass.

The zero heat involved in waterjet cutting, means that there is no damage caused to the structural integrity of the material being cut. No HAZ (heat-affected-zones) whatsoever.

The surface finish of plasma is very course with lots of slag which requires a lot of post cutting reworking whereas with the waterjet cutter there is very little indeed. Another point is that abrasive waterjet cutting has not thickness limitations worth mentioning and the components to be cut can be much more closely nested.

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3. WHAT ARE TYPICAL TOLERANCES THAT ONE CAN EXPECT WHEN USING OUR WATER JET CUTTING SERVICES?

The accuracy depends largely on the part size and thickness but typically you could expect something in the region of +/- 0.3 and 0.4mm.

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4. WHAT IS THE THICKEST MATERIAL IT CAN CUT?

Again depending on the type of material and hardness a typical waterjet will be able to cut up to 200mm thick material.

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5. IS THERE ANYTHING THAT WATERJET CUTTERS CANNOT CUT?

Almost all materials can be cut - but from experience, most laminated materials tend to show signs of delamination after cutting. Take a look at the vast range of materials that can be cut with a waterjet cutter

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6. HOW THICK IS THE KERF (THE ACTUAL WIDTH OF THE CUT)?

As a rule of thumb the kerf is approximately 10% of the diameter of the cutting tip opening. Using a 1mm diameter tip would produce leave a kerf of around 0.5mm.

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7. What Is The Minimum Diameter Radius You Can Cut??

We have succesfully cut 1.3mm diameter holes, bearing in mind that thicker material will taper - giving a bigger hole on one side.

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8. WHAT TAPER CAN BE EXPECTED FROM OUR WATER JET CUTTING SERVICES

This is dependant on the cut speed but at worst, your taper would be equal to the maximum kerf width at the top.As the speed is decreased so the taper decreases until you have parallel sides.

Metals Centre are specialist metal suppliers providing a full waterjet cutting services to accurately cut materials for your next project.

Above pic compliments of WARDJet

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9. IS ANY FIXTURING REQUIRED?

The force being exerted on the workpiece is so small, something in the region of around 5 lbs for most cuts - the need for large and heavy fixtures is eliminated.

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Call our friendly sales team on

27-ll-493-4930

to discuss your cutting requirements.





Metals Centre
18 John St
Unit C1, John st Warehouse
Selby ext. 11
2001
Gauteng
South Africa

Phone-In Orders Welcome!
Ph: 27-ll-493-4930
Fax: 27-ll-493-4941