how many ways to cut a material?

Question

I'm thinking that there are three possible ways to cut any material...

oxidize it along the cut line. For example, burning through with an oxy- acetylene torch. This is often called "burning" in the metal trades.

tear it apart with a force that exceeds the tensile strength. I don't know the proper term for this process.
push through it with a force that exceeds the compressive strength. I also don't know the proper term for this process.

Am I correct?

what tools do what? For example, what exactly does a scissors do? Is that different than what a knife does?

Sam Wormley · Accepted Answer

No oxidation in inert envirinments with ortch or laser  many materials can be melted or vaporized without oxidation

Mark Thorson · Answer

4. Water jet cutting.5.  Sandblasting.6.  E-beam cutting.7.  EDM.8.  Chemical milling.I'm sure I could think of others, if I botheredto spend another 30 seconds thinking about it.

Robert J. Kolker · Answer

Also melt it and pour the results into little molds.Bob Kolker

Uncle Al · Answer

Shear cutting. KA-CHUK!

4) Melt (laser in argon). 5) Electroform (electrochemically dissolve the part line metal) 6) Abrasive cutting - alumina entrained in high pressure/high velocity water. 7) Corrode the part line - acid (and alkali on aluminum, titanium, zinc...). 8) Part line failure through flexure and work-hardening. 9) Intergranular corrosion (gallium chemically plated onto aluminum in tension). Getting stuff apart is not nearly the problem of keeping it intact. "8^>)

Fdmorrison · Answer

Uncle Al      Unless you're in a straight jacket, when some 'shear' strength might help.FM

Jeff Finlayson · Answer

-- Laser, plasma, etc cut. Using heat sums it up.

-- Not practical. Little comtrol over where it'd break unless part had a reduced section.

-- That's shearing as with a die and press. High velocity water is used to cuts some materials.

-- Shear, the same basic action for both.

bob · Answer

A lot of other methods have already been suggested. Another one thatcomes to mind: ultrasonic cutting.

Tom Walz · Answer

Failure Modes:Gross yieldingBucklingCreepBrittle fractureFatigue, low cycleFatigue, high cycleContact fatigueFrettingCorrosionStress-corrosion crackingGalvanic corrosionHydrogen embrittlementWearThermal fatigueCorrosion fatigue

Mark Folsom · Answer

ShearingBearingCompressionAdiabatic ShearMeltingOver-agingThermal shock

Uncle Al · Answer

And the ever-popular V-groove shaped explosive.  Slurry wire saw too.

Mark Folsom · Answer

Ah yes--linear shaped charge.And wire EDM.

how many ways to cut a material?

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