EMAE 160 MIDTERM REVIEW -
FASTENERS, CLEANING, AND
COATING EXAM QUESTIONS AND
ANSWERS
What are the terms for the degradation of ferrous and non-ferrous metals? -
ANSWER-Rust and corrosion respectively
What is the function of tumble de-burring? - ANSWER-Tumble and deburring
services can remove jagged edges or protrusions from metal parts. Deburring
equipment such as machinery is to accomplish the process of deburring. Primarily
two types of deburring machines are used - tumbling or barrel machines and
vibratory machines. Tumblers are used for mass finishing of parts. They can be used
for wet as well as dry finishing. These systems are well suited for fast and efficient
deburring of metal parts or components and are used where heavy deburring is
required. Barrels are ideal for heavy loads. Dry tumbling is used when delicate
deburring is called for and produces a smooth finish. Wet barreling is used for metal
processing to remove excess material as well as to provide a polish
What plating metal is associated with the term galvanizing? - ANSWER-Zinc
What is the principle method of applying powder coating? - ANSWER-Spraying the
powder onto the part with an electrostatic gun
Anodizing is most commonly associated with what metals? - ANSWER-Aluminium
Define "proof strength" as the term applies to threaded fasteners. - ANSWER-How
much load can be applied to a fastener before permanent elastic deformation
List three types of electroplating used for steel. - ANSWER-Electrostatic spray, Dip
coating and Powder coating
Define the components of the following designation: 3/8-24 UNC 2BLH. - ANSWER-
3/8 - 24 : Size and Threads Per Inch, UNC: Unified course thread series, B2: Class
2B Thread consists of a 2A screw in a 2B hole. This 2B Thread has wide application,
accommodates plating, finishes, and coating to a limited extent and,therefore, has
fair tolerance allowances, LH: Left Hand
Diameters smaller than ¼" use numbers in the United States. What do these
numbers designate? - ANSWER-For diameters smaller than ¼ inch, the diameter is
indicated by an integer number defined in the standard, for all other diameters, the
inch figure is given.
What is the rule of thumb for maximum engagement in a threaded hole? - ANSWER-
1.5 of diameter
FASTENERS, CLEANING, AND
COATING EXAM QUESTIONS AND
ANSWERS
What are the terms for the degradation of ferrous and non-ferrous metals? -
ANSWER-Rust and corrosion respectively
What is the function of tumble de-burring? - ANSWER-Tumble and deburring
services can remove jagged edges or protrusions from metal parts. Deburring
equipment such as machinery is to accomplish the process of deburring. Primarily
two types of deburring machines are used - tumbling or barrel machines and
vibratory machines. Tumblers are used for mass finishing of parts. They can be used
for wet as well as dry finishing. These systems are well suited for fast and efficient
deburring of metal parts or components and are used where heavy deburring is
required. Barrels are ideal for heavy loads. Dry tumbling is used when delicate
deburring is called for and produces a smooth finish. Wet barreling is used for metal
processing to remove excess material as well as to provide a polish
What plating metal is associated with the term galvanizing? - ANSWER-Zinc
What is the principle method of applying powder coating? - ANSWER-Spraying the
powder onto the part with an electrostatic gun
Anodizing is most commonly associated with what metals? - ANSWER-Aluminium
Define "proof strength" as the term applies to threaded fasteners. - ANSWER-How
much load can be applied to a fastener before permanent elastic deformation
List three types of electroplating used for steel. - ANSWER-Electrostatic spray, Dip
coating and Powder coating
Define the components of the following designation: 3/8-24 UNC 2BLH. - ANSWER-
3/8 - 24 : Size and Threads Per Inch, UNC: Unified course thread series, B2: Class
2B Thread consists of a 2A screw in a 2B hole. This 2B Thread has wide application,
accommodates plating, finishes, and coating to a limited extent and,therefore, has
fair tolerance allowances, LH: Left Hand
Diameters smaller than ¼" use numbers in the United States. What do these
numbers designate? - ANSWER-For diameters smaller than ¼ inch, the diameter is
indicated by an integer number defined in the standard, for all other diameters, the
inch figure is given.
What is the rule of thumb for maximum engagement in a threaded hole? - ANSWER-
1.5 of diameter
