Comprehensive Guide on Water jet Cutting

Collaboration blog between Venwiz and SASA Enggtech sharing valuable insights on the importance of water jet cutting and service capabilities of SASA Enggtech

Water jet cutting is a highly effective and adaptable technique for precisely cutting various materials. It erodes and cuts through any material using a pressurized water stream that has been combined with an abrasive material. In this blog, we provide an in-depth understanding of waterjet cutting, including its applications and benefits.

What is water jet cutting?

Water jet cutting is a fabrication process that shapes and cuts material using high-pressure water jets supplied by pressurizing pumps that create a supersonic stream of water. During water jet cutting, a small, precise nozzle projects water under pressure up to 392 MPa on the material. Water shoots out of the nozzle at more than three times the speed of sound.

Unlike conventional cutting methods, waterjet cutting is a cold-cutting method (non-thermal), i.e., no heat is used during the cutting process. Explore other cutting methods here.

Types of water jet cutting machines

There are two types of machines:

Pure waterjet cutting machines use a high-pressure water stream to cut through heat-sensitive materials like electronics, architectural components, and aerospace parts.
Abrasive waterjet cutting machines are a particular kind of waterjet cutter that can cut through materials at high speeds by using a stream of water combined with abrasive particles. This machine is used in a variety of industries, including fabrication, manufacturing, and the automobile industry.

Computer numerical control (CNC) systems control both machines that can produce complex shapes with high cutting accuracy.

Comparison of different cutting techniques used in the industry

Parameter	Waterjet	Laser	Plasma	Mechanical
Principles of operation	High-pressure water jet stream	High-powered laser beam	High-temperature plasma jet	Saw blades, drills, etc.
Materials that can be used	Cutting stone, plastic, ceramics, thick metals, reflective metals, rubber and glass	Metals, Plastic, Wood, Fabrics, Textiles, Paper and cardboard	All metal, Cast iron, Titanium	Stone, ceramics, thick metals, reflective metals, rubber and glass
Max thickness	Can cut up to 250 mm for most materials	Upto 25 mm for mild steel, 12 mm for stainless steel and 10 mm for aluminium	Upto 150 mm	Between 3 mm to 10 mm
Stress on material	The material undergoes no molecular change	There may be structural changes, deformation, and tempering	There may be structural changes, deformation, and tempering	There may be structural changes, deformation, and tempering
Cutting waste produced	Water and grit	Dust and fumes	Dust and fumes	Mostly dust
Accuracy	High	Very High	Medium	Low
Speed	Medium	Very fast	Fast	Slow
Suitability	Can cut complex shapes and is a thermally sensitive material	Can cut thin material and complex shapes with tight tolerances	Cut through thick conductive material	Cut simple shapes

Applications of water jet cutting

Industries that use waterjet technology extensively are:

Industry	Application Examples
Aerospace	Body parts, engine components, titanium bodies, interior cabin panels, custom control panels, and trimming of turbine blades
Automotive	Interior trim, fibreglass body components, flanges, speciality metal gaskets, speciality brake disks, custom skid plates, intricate decorative brackets, and copper head gaskets
Electronics	Circuit boards, cable stripping, custom electrical enclosures, control panels, and generator components
Medical/Surgical	Surgical instruments, artificial limb components, carbon braces, and orthopaedic appliances
Food manufacturing	Meat processing, frozen food, vegetable slicing, production of cakes and biscuits, food processing equipment components

Venwiz: Your gateway to unmatched business success

Venwiz, a platform that connects businesses with top-notch vendors, is proud to introduce SASA Engineering, a leading provider of precision waterjet cutting solutions. With extensive experience and expertise, SASA Engineering delivers high-quality, precision-engineered cutting solutions for a wide range of materials

About SASA Enggtech Pvt. Ltd.

SASA® Enggtech Pvt. Ltd. is a leading engineering and manufacturing company started in 2011. It offers end-to-end solutions in engineering design and development, metal cutting and processing, machining, and fabrication.

SASA understands the complete requirements of customers and bring rigorous attention to detail and efficiency at every operational touch point.

Processes

Water jet cutting machine

SASA Enggtech has hi-tech 3-axis waterjet cutting facilities that are capable of use in a broad gamut of applications and can handle virtually any material of about 200 mm in thickness.

The services provide high precision, waste reduction, and a clean, environmentally friendly process. We use top-class machines imported from Germany to ensure our cutting results are flawless and burr-free on any material, including glass, steel, and titanium.

Expertise and precision allow SASA Engtech to deliver final products without requiring additional surfacing or machining, saving you time and effort.

Machine capabilities

Materials machined	Max operating Pressure	Material Thickness	Area
Textiles, rubber, foam, plastics, leather, composites, stone, tile, glass, metals, food, paper, etc.	3200 bar	0.5 mm to 200 mm	1500 x 3000 mm2

A few machined parts

Other process capabilities include:

Laser cutting Services
CNC Bending
Light & Heavy Fabrication
CNC Machining
Rolling

Case Study: Overcoming Challenges in Cutting HNS Material for Defense Applications

Context

A defence sector company (X) requires precision cutting of HNS (High Nitrogen Steel) material for armour applications.

Challenges

Conventional plasma cutting causes material deformation and loss, leading to financial losses for company X

Solution

SASA Enggtech proposed waterjet cutting as a more suitable alternative due to its cold-cutting process and superior precision.

Impact

SASA Enggtech successfully completed the HNS cutting project using waterjet technology, achieving 2x cutting speed and eliminating material deformation.

Success

SASA Enggtech’s expertise in waterjet cutting technology and the company’s advanced equipment contributed to the project’s success.

Guest blog author

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