This Presentation covers the basic concepts on the types of soldering in a easy version. For more information, please refer the books mentioned in the references slide.... Thank you

1. TYPES
OF
SOLDERING
By,
Melwin D’mello
M.E (Welding Engineering)
Department of Manufacturing Engineering,
ANNAMALAI UNIVERSITY

2. CONTENTS
 Soldering
 Types of soldering
 Hand soldering
 Flame soldering
 Furnace soldering
 Hot gas blanket soldering
 Applications
2

3. SOLDERING
 Soldering is a process in which two or more materials
(usually metal) are joined together by melting with the
filler material into the joint.
 Normally the filler metal having a lower melting point
(below 450°C) than the base metal.
 The solder does not melt the base metal but by
dissolving a small amount of it to form a layer of
intermetallic compound.
3

4. TYPES OF SOLDERING
1. Hand Soldering
2. Flame Soldering
3. Furnace Soldering
4. Hot Gas Blanket Soldering
5. Dip Soldering
6. Wave Soldering
7. Laser Soldering
8. Resistance Soldering
9. Induction Soldering
10. Ultrasonic Soldering
4

5. HAND SOLDERING
5

6. Hand Soldering
6

7. Hand Soldering
7

8. Solder Feeding
8

9. Soldering Iron Operation
9

10. FLAME SOLDERING
10

11. Flame Soldering
 Soldering is done under direct flame.
 oxy-acetylene or air-acetylene torch can be se depending on
the temperature required.
 Different sized interchangeable and portable torch are used to
control flame to a fine tip.
 The solder is applied manually.
 Flame soldering is usually used in plumbing trade for soldering
copper tubing to copper fittings.
11

12. Flame Soldering Process
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13. FURNACE SOLDERING
13

14. Furnace Soldering
 Furnace soldering is a semiautomatic process
 It is done under controlled temperature and uniform
heating atmosphere.
 Normally the process is carried under inert gas
atmosphere or in vacuum
 This process is best suitable for mass production
14

15. Soldering Furnace
15

16. Soldering Furnace
16

17. HOT GAS BLANKET
SOLDERING
17

18. Hot Gas Blanket Soldering
 Here, the heat transfer between gas and the material to
be heated is relatively low.
 The bodies of the components positioned in the stream
of gas are often heated more rapidly.
 Hot gas provides a suitable method of heating,
especially in small scale production.
 The temperature of gas is set to about 4000 C
18

19. Hot Gas Blanket Soldering
Equipment 19

20. APPLICATIONS
 Electronic industry.
 Jointing automobile radiator cores.
 Plumbing and fittings.
 Electrical industry for joining wires.
20

21. References
1. “Welding Process and Technology” : by Dr. R.S Parmar
2. “Welding Process and Technology” : by O.P Khanna
3. “Welding Engineering and Technology” : by Dr. R.S
Parmar
21

22. THANK YOU
Electronic industry
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