Soldering metal ceramic FDPs Flashcards Preview

Fixed 3 Final > Soldering metal ceramic FDPs > Flashcards

Flashcards in Soldering metal ceramic FDPs Deck (17)
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1
Q

What does it mean to have a solder that contains 65% gold?

A

65% = 650/1000 - fine gold

2
Q

Group 1 solder is a ______ gold containing solder.

A

Traditional

3
Q

Group 2 solder are _____ solders that have brand name with pre and post designation.

A

Special

4
Q

Pre-ceramic solders are ____-____ alloys that slightly melt beneath the softening point of the parent alloy to be joined.

A

High-fusing

5
Q

___-______ solders ideally should flow well above the fusion range of subsequent applied porcelain.

A

Pre-Ceramic

6
Q

Which type of solder is being described?

  • Difficult to control melting range
  • Overheating base
  • Pitting
  • Corrosion
A

Pre-Ceramic

- Also includes not having a good bond with porcelain

7
Q

Post-ceramic solders are ___ ____ alloys that melt below the pyroclastic range of porcelain.

A

Low fusing

8
Q

Pre-solder should melt around what temperature?

A

2000F

9
Q

Post-solder should melt around what temperature?

A

1300F

10
Q

Which type of solder is being described?

  • Slightly weaker and more brittle
  • No quenching
  • Small gap space leads to incomplete joint
  • Large gap space leads to less strength
A

Post-ceramic

11
Q

What are the 4 types of heat sources used for soldering?

A
  • Torch soldering
  • Oven soldering
  • Infrared soldering
  • Laser welding
12
Q

Torch soldering is used mainly for (pre/post)ceramic soldering?

A

pre-ceramic (full gold)

13
Q

Oven soldering is used mainly for (pre/post)ceramic soldering?

A

Pre and post ceramic soldering

14
Q

Infrared soldering is used for what?

A

Low-fusing connectors

Pre-ceramic soldering joints

15
Q

what is antifulx made of?

A

Graphite or iron oxide with turpentine

16
Q

What size gap is best for soldering between 2 units?

A

.25mm

17
Q

Flux prevents ____ from forming and allows solder to better bind to metal.

A

Oxides