Posted by: heatsschoolofweldingtechnology | March 6, 2009

CAUSES OF LACK OF PENETRATION


Here are some causes of lack of penetration in welding. By knowing these causes, you can do preventive measures to avoid such welding defects;

 
1. Improper joints design 
2. Too large root face.
3. Root gap too small.
4. Too small bevel angle.
5. Less arc current.
6. Faster arc travel speed.
7. Too large electrode diameter.
8. Longer arc length.
9. Incorrect polarity when welding with direct current.
10. Wrong electrode manipulation.


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Categories

%d bloggers like this: