15 Miscellanous Processes

Question 1

This plastic is of limited duration, and the setting reaction proceeds with time, particularly at elevated temperature

Answer 1

Thermosetting

Question 2

This plastic may be held in the softened condition for prolonged periods of time with little or no chemical change

Answer 2

Thermoplastic

Question 3

Molding process in which material in powder granule, pill, or preformed shape is first introduced into the mold followed by the application of pressure and heat

Answer 3

Compression molding

Question 4

Thermosetting plastic molding method were pressure is applied to force, or transfer the charge of the die activity

Answer 4

Transfer molding

Question 5

Thermoplastic molding method where a measured charge of raw material is introduced when the plunger is withdrawn, and on the working stroke in the machine, the material is forced around the spreader where heat is supplied

Answer 5

Injection molding

Question 6

Procedure in which successive layers of manually place filler material are brushed or sprayed with resin as they are applied to the mold, which may have either a concave or a convex shape

Answer 6

Contact layup

Question 7

Vacuum bag molding, expanded bag molding, autoclave molding are all examples of this method

Answer 7

Contact layup

Question 8

Mixture of two or more materials that may be made up of all metals, combinations of metals and non-metals, or all nonmetals

Answer 8

Composites

Question 9

A mixture of gravel, sand, and portland cement when combined with enough water to form a thick paste will harden with the passage of time into

Answer 9

Concrete

Question 10

EDM stands for

Answer 10

Electrical discharge machining

Question 11

A simple and convenient way to fabricate defects in the standard or test specimen for nondestructive testing is

Answer 11

EDM

Question 12

And abrasive machining process used for cutting hard materials by projecting tiny abrasive particles at the worksurface at high velocities

Answer 12

Ultrasonic machining

Question 13

Thermosetting plastics and fibrous reinforce materials is used in this molding method

Answer 13

Reinforced plastic molding

Question 14

This process combines mechanical interlocking and interatomic forces

Answer 14

Adhesion

Question 15

Type of composite with random orientation and shape of the constitutes

Answer 15

Mixtures

Question 16

The process used for shaping metals by chemical dissolution only, with selected removal accomplish by masking areas where metal is not to be removed is called

Answer 16

Chemical milling

Question 17

A process that is the reverse of electrochemical machining and that is the basis for electroplating is called

Answer 17

Electroforming

Question 18

A cutting operation that has the ability to cut through thickness of over 3 feet of steel and is commonly used to remove surface defects and castings and forgings by scarfing is called

Answer 18

Oxyacetylene cutting