DDT Exam 7

Carbon

Makes up 90% of steel produced

Standard Taper

A Morse Taper is considered to be a

Neck

Used to eliminate small radii between steps of a shaft

Low Carbon Steel

Steel with .06%-.29%

Hot Rolled

Process leaves a scale on the surface

Cold Rolled

Controls size closely

Partally Enlarged

View used when dimensioning is difficult to see

Limit

When maximum and minimum dimensions are given

Knurling

Provides a hand grip on cylindrical surface

High Carbon

Steels with .60% or higher

Boss

Round additional metal adjacent to a hole

Alloy

Mix of metals to add desirable characteristics

Heat Treatment

Notes appear near right side border

Taper

Conical shape that permits a shaft to become gradually smaller

Medium Carbon

.30%-.59% Carbon steels

Single Limit

Corner Radii, Chamfers, and depths of holes use

Pad

Additional metal adjacent to a hole in a shape other than a round

Tool Steels

Used for making tools

Diamond, Diagonal, Straight

Different types of knurling