M&P chapter 8

Question 1

A joining procedure that is defined as the permanent union of metallic surfaces by
establishing atom-to-atom bonds between surfaces is known as:

Answer 1

Welding.

Question 2

The most common method of joining two parts together is:

Answer 2

Threaded fasteners.

Question 3

The nature of bonding requires that the materials to be joined meet the requirements of both atomic cleanliness and:

Answer 3

Atomic closeness.

Question 4

The solidification of both the base and filler metals of a fusion weld produce a localized area of material whose properties resemble that of a(n):

Answer 4

Casting.

Question 5

The use of filler metal in fusion welds is nearly always necessary in sheet and structural materials that are over what thickness?

Answer 5

3 mm (1/8 in.)

Question 6

Even though some inclusions are in the weld area, thereby lowering the unit strength,
pressure-welded joints may be stronger than the original cross section as a result of the
enlargement that occurs with plastic flow. The efficiency of pressure bonds based on the
original area in the weld can be as high as:

Answer 6

95%.

Question 7

When a filler material of a different composition and lower melting temperature
than the base material is used the mechanism of bonding is known as:

Answer 7

Flow bonding.

Question 8

There are three common operations that employ
flow bonds. They are braze-welding, soldering, and:

Answer 8

Brazing.

Question 9

During both brazing and soldering operations, filler metal is drawn into the joint by:

Answer 9

Capillary action.

Question 10

Soldering occurs below what temperature?

Answer 10

449 °C (840 °F).