Q - Ultrasonic to Hydrodynamic

Question 1

A term that refers to cutting methods that are unusual, uncommon, or specialized; generally anything apart from cutting with blades or bonded abrasives

Answer 1

NON-TRADITIONAL MACHINING

Question 2

Why are abrasive cutting techniques considered NON-TRADITIONAL?

Answer 2

they use grit in its granular un-bonded form

Question 3

A non-traditional abrasive cutting technique. A tool that doesn’t actually touch the workpiece vibrates up and down at high frequency. A slurry is recirculated past the tip of the tool.

Answer 3

ULTRASONIC MACHINING

Question 4

A technique similar to “sandblasting”. Grit is introduced into a stream of compressed air then forced through a nozzle. The result is a highly concentrated tight beam of grit at 150-300 m/s.

Answer 4

ABRASIVE JET MACHINING

Question 5

Uses “etching” which is the removal of material through a chemical reaction

Answer 5

CHEMICAL MACHINING

Question 6

What chemically resistant material must the component surface be covered in to control the process, this protects it from the etchant

Answer 6

MASK/MASKANT

Question 7

An approach that uses a photosensitive maskant or PHOTORESIST

Answer 7

PHOTOCHEMICAL MACHINING

Question 8

The maskant is inevitably undercut by the etchant, making the method best suited to shallow indentations ________ _______.

Answer 8

CHEMICAL MILLING

Question 9

The maskant is inevitably undercut by the etchant, making the method best suited to shallow indentations ________ ________.

Answer 9

CHEMICAL BLANKING

Question 10

A process that uses the reverse of electroplating to remove metal from a workpiece that forms the anode in an electrochemical cell. No maskants are needed and no reagent.

Answer 10

ELECTROCHEMICAL MACHINING

Question 11

What does EDM stand for?

Answer 11

ELECTRIC DISCHARGE MACHINING

Question 12

What is another name for EDM?

Answer 12

SPARK EROSION

Question 13

One type of EDM which is used to create holes of any cross-section.

Answer 13

PLUNGE EDM

Question 14

4 types of PLUNGE EDM

Answer 14

• RAM
• SINKER
• CAVITY
• VOLUME

Question 15

A fluid, such as oil or silicone that must be worked between tool and part.

Answer 15

DIELECTRIC (non-electrically conductive) fluid

Question 16

A form of EDM involving a wire and pulley system

Answer 16

TRAVELING WIRE/WIRE EDM

Question 17

A type of EDM similar to PLUNGE EDM except the tools are circular, small diameter, rotated during descent, and hollow to permit high pressure dielectric to be pumped down through the bore.

Answer 17

SMALL HOLE EDM/EDM DRILLING

Question 18

What does EBM stand for?

Answer 18

ELECTRON BEAM MACHINING

Question 19

A technique that employs a high energy stream of electrons to vaporize a workpiece upon impact, not used much anymore

Answer 19

ELECTRON BEAM MACHINING

Question 20

Largely replaced EBM since it requires neither a vacuum nor heavy shielding.

Answer 20

LASER BEAM MACHINING (LBM)

Question 21

2 main categories of LASER MACHINING

Answer 21

LASER CUTTING and LASER ETCHING (ENGRAVING)

Question 22

Mainly performed on sheets of material, since cutting through thick plates can result in tapered slot walls as a consequence of the fanning-out effect of the gas stream. The gas used is Oxygen, which raises the temp.

Answer 22

LASER CUTTING

Question 23

Cutting process that doesn’t produce a very smooth cutting surface and also leaves a “Heat Affected Zone” which can degrade material properties.

Answer 23

LASER CUTTING

Question 24

The cutting process used to remove material from the surface of a workpiece, and can be performed with or without an inert gas

Answer 24

LASER ETCHING

Question 25

When combined with _____-____ ___ positioning, LASER MACHINING can be performed on 3D surfaces

Answer 25

MULTI-AXIS CNC

Question 26

A lower-cost alternative to laser when it is required to cut right through the metal plate. The metal must be electrically conductive

Answer 26

PLASMA CUTTING

Question 27

Modern development to PLASMA CUTTING which employs a torch on the end of a robotic-style arm with multiple degrees of freedom

Answer 27

CNC 3D PLASMA CUTTING

Question 28

What is another word for HYDRODYNAMIC MACHINING?

Answer 28

WATER JET CUTTING

Question 29

Uses a very high-pressure jet of water directed through a fine nozzle.

Answer 29

WATER JET CUTTING/ HYDRODYNAMIC MACHINING

Question 30

Abrasive grit is introduced into the water stream to cut hard materials, especially thick plates.

Answer 30

ABRASIVE WATER JET CUTTING

Question 31

What was used to revolutionize the process of ABRASIVE WATER JET CUTTING granite countertops?

Answer 31

3D MULTI-AXIS CNC control