Fridays Welds

Some Of This Week's Welds !

 This series of photos is some sort of submerged science thing but who cares about the details of what it is as long as You get to weld it !!!

 This thing was an easy weld, MIG ran mostly down hill.

 This is another pipe assembly, note the flanges are stainless steel ...

These flanges had to be TIG welded in place to keep
the weld  small enough for a pipe to mate up.

The smaller stainless flange was MIG welded on the inside
than , using TIG was fusion welded on the pipe side !

 This next sequence of photos is a drive shaft repair , the sleeve had to be plug welded in adjacent spots than fillet welded all around both ends of the sleeve .

 this is a stainless railing that fought me the whole time - note the fixture that had to eventually be fabricated to keep the angle in place while welding .

This is an aluminum master cylinder that had to have a plug welded in place than ground
to hide the weld ..

Ok that's it for now 

HAPPY WELDING !!!!

Updated 4943 Information and A photo of Today's Project ...

I am not the best MIG welder but with huge projects like this I will surely get better at it !!!

I received an e-mail regarding an older post that talked briefly about 4943 filler metal. It included an updated data sheet , a great filler metal selection chart  and, a good guide for aluminum welding .

this info came from
Galen White

Senior Welding Engineer

Maxal International, Inc.  An ITW Company

1631 International Drive

Traverse City, MI  49686

I have sent an e-mail asking a few questions regarding 4943 filler metal and its applications , as usual I will update the blog when I get that info ...

Well he got back to me so fast I am able to update now rather than later - here it is in his words -

The most common application for 4943 is anywhere that 4043 is currently being used. In the as welded condition 4943 produces welds that have 25% higher Ultimate Tensile Strength and 50% higher Yield strength when compared to 4043. There are several base metals that can be welded with either 4043 or 5356 and because 5356 has much higher mechanicals, it often gets chosen for this reason even though 4043 produces a more fluid, cosmetically pleasing bead that is less prone to cracking. Now that 4943 has been developed the strength difference is much closer. 

4043 = 28 ksi

5356 = 38 ksi

4943 = 35 ksi

The perfect application for 4943 is when 6061 is welded and because higher strengths are required, it is post weld heat treated. Unwelded 6061-T6 has an UTS of 42 ksi. When welded the strength of the heat affected zone drops to 24 ksi. Much of this loss in strength can be regained with thermal treatment. Unfortunately 4043 and 5356 do not respond to heat treatment (4043 will gain some strength due to picking up some Magnesium from the 6061 but it is dependent on penetration and is limited and not very consistent). 4943 is completely heat treatable on its own and is not dependent on dilution. Here is what happens when you heat treat 4943:

4943 as welded = 35 ksi

4943 post weld aged = 42 ksi

4943 PWHT and aged = 49 ksi!!

6061-T6 = 42 ksi

HAPPY WELDING !!!!

More From Work !

Steve one of the machinists .

Stainless filler metal update

308L is standard for most applications when dealing with stainless steel however , food grade calls for a different type of Stainless Filler Metal  , 316L which has differing metallurgy from 308L.

when dealing with food grade / beer ect.. be sure to use the right filler !!!

More Photos From Work

Some photos of today's projects , this job is ridiculous as far as the work load goes , every day a different project or 10...

New Job at Allied Technical Services ( machine Shop )

I have been so busy that I have barely had time to post on my Blog ..

I landed the dream job at a local machine shop where 99% of my day is spent TIG Welding on just about everything I could think of , sooooo awesome - here are a few photos of my first works .

This is a huge nut and bolt that I had to fabricate the loop and weld it on . easy stuff just mild steel!

 This is a deck for standing on , mostly MIG but when we ran out of wire TIG was the fall Back process for attaching the deck plate .

 This is a bearing housing that had to have a sleeve inserted than welded , this weld was later machined off .

HAPPY WELDING AND MAY YOUR JOB SEARCH GO WELL !!!!!!!