7.15

Question 1

The maximum soldering temperature is the temperature above which
important components of the flux will _______________.

Answer 1

evaporate

Question 2

When soldering, ______ is used to remove or dissolve unwanted
oxides or residues or to react with them

Answer 2

flux

Question 3

Which of the following statements regarding dip brazing is true?

Answer 3

It can be performed either as salt bath soldering or as metal bath
soldering.

Question 4

A great amount of furnace brazing is performed in a vacuum as thisprevents oxidation and, under certain conditions, the use of flux is unnecessary.True or False?

Answer 4

True

Question 5

Which of the following inert gases is used in welding?

Answer 5

Nitrogen

Question 6

Quality solder connections should be smooth, shiny, and uniform inappearance. True or False?

Answer 6

True

Question 7

The lowest temperature that must exist at the contact area of solderand work piece in order to let the solder flow and adhere to the parent metal iscalled the ______________ temperature.

Answer 7

operating

Question 8

Soft soldering (i.e. working temperature > 450°C) only results in low-strength joints. True or False?

Answer 8

False

Question 9

For induction brazing of small components, high frequencyinstallations of
_______________________________
are usually used.

Answer 9

450-2000kHz

Question 10

Which of the following statements is true?

Answer 10

Every brazing methods have a melting temperature of the solderthat is above 450°C.

Question 11

Soldering may cause some metals and alloys to experience:

Answer 11

All of the above.

Question 12

Which of the following statements regarding the soldering process istrue?

Answer 12

The operating temperature depends on the properties of thesolder.