Question
Download Solution PDFFor a standard 45° fillet, the ratio of size of fillet to throat thickness is ______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe minimum size of the fillet weld is 3 mm to avoid the risk of cracking in the absence of pre-heating, and should not exceed ‘t – 1.5 mm’, where ‘t’ is thickness of thinner plate.
|
Thickness of plate |
Size of the weld |
|
Upto 10 mm |
3 mm |
|
10-20 mm |
5 mm |
|
20-32 mm |
6 mm |
|
32-50 mm |
8 mm |
The effective throat thickness should not be less than 3 mm and generally should not exceed 0.7 × t, Where ‘t’ is thickness of thinner plate.
If the fusion faces are inclined, then the throat thickness is ‘k’ times to size of fillet weld. K values are given in table below.
|
Angle between fusion faces |
< 90° |
91-100 |
101-106 |
106-113 |
113-120 |
|
K value |
0.70 |
0.65 |
0.60 |
0.55 |
0.50 |
Effective throat thickness,
tt = 0.707 S ; Where S is size of weld
S = √2 × tt
∴ S/tt = √2:1
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