microwaterjetincluyeimagenesmm live 5-12-2010

8/8/2019 MicroWaterJetIncluyeImagenesMM Live 5-12-2010

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Defining Precision:

Revolutionary Abrasive Waterjet Technology

Presented by

Walter Siegenthaler

Executive Vice President


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WATER JET CUTTING FOR

MICRO AND HIGH PRECISION PARTS

Defining Precision


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Todays Topics:

Comparing conventional cutting methods

Avoiding heat affected zones

Abrasive Waterjet process/ technology

Solutions using collaboration of processes Selecting the right material

The future of precision abrasive water jet cutting

Defining Precision


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Defining Precision

Comparing traditional cutting methods:

Wire EDM

Conventional Laser Cutting

Waterjet Cutting


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Definite Precision

Shameless Disclaimer

The specifications stated in this presentation

are averages based on my own research of

information provided by various

manufacturers and service providers.

You may have seen or experienced different

data yourself.

Please feel free to speak with me after the

presentation.


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Defining Precision

Wire EDM advantages:

Extremely accurate process

Able to cut multiple parts in a stack

No burr on cutting edge

Virtually no edge taper


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Defining Precision

Wire EDM disadvantages:

Cutting process is slow as compared to other processes

Leaves heat affected zones in material

Leaves recast layer on material

Non-conductive materials can not be cut using EDM Large quantity production is cost effective, prototypes

are expensive to produce


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Defining Precision

Conventional Laser Cutting advantages:

Fast cutting speeds

Accurate beam positioning

Beam width (kerf)

No wear on the beam - consistent results


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Defining Precision

Conventional Laser Cutting disadvantages:

Stacking material is not practical

Leaves heat affected zones in material

Leaves recast layer on material

Some materials are not compatibleCan be a high consumer of energy


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Defining Precision

Heat Affected Zones may cause problems

Additional processes such as heat treating may have to be

performed to reverse the HAZ

Materials such as spring steel will have changed molecular

structure

Material may show cracking in these areas


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Defining Precision

Conventional Abrasive Water Jet characteristics:Mechanical Energy

Parts Accuracy 0.1mm

Minimum Inside Radius 0.4mm

Minimum Hole Diameter 0.8mm

Kerf width 0.8mm (few now as low as 0.5mm)

Thickness Range 5mm to ~ 300mm


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Defining Precision

Conventional Abrasive Water Jet advantages:

Fast cutting speeds

Capable of cutting thick material

Roughing process for milling

No Heat Affected ZonesNo recast layer

Virtually any material can be cut using AWJ


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Defining Precision

Conventional Abrasive Water Jet disadvantages:

Thicker material often shows taper

Wet process problematic to some materials

Often only usable as roughing process


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Defining Precision

Micro WaterJet characteristics:Mechanical Energy

Parts Accuracy 0.01mm

Minimum Inside Radius 0.15mm

Minimum Hole Diameter 0.30mm

Kerf width 0.3mm AWJ

Kerf width 0.08mm WJ

Thickness Range 0.01mm to ~100mm

Conventional AWJ:Same

0.1mm

0.4mm

0.8mm

0.8mm (few now 0.5)

0.25mm

5 mm up to 300 mm


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Defining Precision

D_mixL_

mix

D_kol

L_

kol

a_

abr

D_

abr

Da_foc

alpha

c

bD_cone

L_

cone

collimationtube

orifice

abrasive connection

mixing chamber

head body

focusing tube


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Defining Precision

Take advantage of the resources available to you Use multiple processes to increase precision of your part,

reduce waste and handle the product as little as possible.


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Defining Precision




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Defining Precision




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Defining Precision




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Defining Precision

Select the right material for the right applicationDuring the design stage, be aware of how your material can be

processed for production

Create a partnership with a contract manufacturer who will work

closely with you and is willing to advise during design changes


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Defining Precision

Ceramic (0.25 mm wide slice) 7mm thick work piece


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Defining Precision

PTFE


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Defining Precision

Neoprene

20 mm


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Defining Precision

Delrin


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Defining Precision

Phenolic


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Defining Precision

Carbon steel


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Defining Precision

Stainless Steel


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Defining Precision

Titanium


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Defining Precision

Hyperco 50


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Defining Precision

Nitinol


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Defining Precision

Spring Steel


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Defining Precision

Sterling Silver


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Defining Precision

Plans for advances in Micro Waterjet technology: Reducing the kerf from 0.3mm to 0.2mm (2010)

Reducing the kerf to 0.1mm

Tilt head with same precision

Addition of a rotary axis for cutting parts in the round With this, the addition of 3-Dimensional CNC software will

be a necessity


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Defining Precision

Thank you for your time andattention!

microwaterjetincluyeimagenesmm live 5-12-2010

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