Exam (elaborations)
MIG WELDING BLOCK 6 EXAM QUESTIONS AND ANSWERS
- Course
- Institution
MIG WELDING BLOCK 6 EXAM QUESTIONS AND ANSWERS...
[Show more]
Content preview
MIG WELDING BLOCK 6 EXAMQUESTIONS AND ANSWERS
Occurs when an arc doesn't melt base metal sufficiently and a puddle
flows onto an unmelted base metal. Happens when the puddle is too
large. - ANSWER Cold lap (overlap)
For an overhead position lap joint you travel smoothly and evenly to
ensure - ANSWER Penetration
Comes from removing gun and shielding gas before the puddle solidifies
- ANSWER Crater porosity and cracks
Welding method where arc extinguishes and arc again at 20-200 times
per second, shallow penetration, makes small puddles - ANSWER
Short circuiting transfer
Welding method used where gravity could be a factor. Small metal
droplets through arc - ANSWER Spray arc transfer
How many degrees should you tilt your work when welding in flat
position? - ANSWER 10-20 degrees
What metals are used for weld backing? - ANSWER Copper blocks,
strips and bars, carbon block, fired clay. Cooper is most common
Wire guides are made of what? What does it reduce? - ANSWER
Nylon or Teflon; reduces friction and wire sharing
Welding method in which the tip increases 2-3 times the electrode
diameter. Common problems are excessive spatter, poor arc stability,
poor penetration. - ANSWER Globular transfer
Horizontal lap joint bead face should be what? - ANSWER Flat or
slightly convex
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller luzlinkuz. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
80796 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now