Follow up to this post,
Does anyone here have any real world welding experience on 3310/3311, 4320 or a similar alloy in the Quenched and Tempered condition? We want to increase our load capacity by increasing our mechanical properties. To meet our mechanical requirements we will most likely...
ABS is a funny organization and many of their rules are a little "grey". I would pose this question directly to your surveyor and see what he has to say about it. You might want to get the answer in writing so they don't change their mind on you after the fact.
An M20 bolt, grade 8.8 has a tensile proof load of 110 kN.
Using the formula:
Engagement Length = 2*Tensile Area / (0.5*pi*(Major Diameter of Screw - 0.64952/#threads))
Tensile Area = 0.40816 in^2
Major Diameter = 0.816 in
# Threads = 10.16
I get 0.691 inches of thread engagement. Now this is...
.04% Carbon steel is very very low carbon steel. It's probably not that. But you really need to find out from your supplier what the material is because that will make a huge impact on what the requirements are for welding the shaft. You may need to do a somewhat elaborate pre-heat and...
dmertz,
Could you please let us know what the expected loading is on the bolted connection and what size the hardware is. That would help us help you with this dilemma. I am picturing a 3/4" bolt or something around that size, in which case tapping through 1" plate + the flange would be fine...
What is the size of the bolt that you are using?
I am assuming the use of nuts on the back side of the plate is not allowable because the nuts would be right where the beam is?
Is the process: weld the plate to the beam, grind the plate flat, then tap and drill through both the plate and beam...
When you have two plates welded together there will always be corrosion between the two plates, you probably just wouldn't ever see it. It's acceptable to tap through multiple layers, but to say whether or not this is a good idea for your particular situation is impossible without knowing more...
We are not going to be using cathodic protection. While in service the units are slathered with copper grease, the majority of the oxidation occurs while the units are on dry land.
This is my first post on Eng-Tips so please take it easy on me!
I have an application where we need to weld a strong flange onto the end of a mild steel pipe (ASTM A106 Grade C). The flange is 24" OD x 1.53 Wall thickness and 6 inches deep. The Pipe is also 24" OD x 1.530 wall, but is much...
