Cu mai help

[HighwaterKnives]

Working on a high alloy cu mai and looking for some help getting things to stick. Target for the outer layers is aeb-l with a target of the core k390 or v10. I know I'm asking for a lot. .010" copper thickness

Coupons 1" square of a varying alloys with a single layer of copper. All is cleaned with acetone after sanding to 100 grit with a fresh belt and Tig welded around the full perimeter.


Using a heat treat oven set to temps below I am rolling the coupons .005" per pass for around 5 passes

So far my experiments.


304 stainless-52100 1925f- not sticking to 52100
Aeb-l - 15n20 1800f -15n20 sticks better, aeb-l separated when bent 30 degrees.
K390-aebl 1950f and 1800f samples k390 cracked, oxidized, copper fused poorly

Is 1800f too high. Is there something I should be doing as far as prep, temp, number of passes to get this to stick better? Mig instead of tig? Flux?

 

[Hella Bread]

since you said rolling and passes i’m assuming you’re trying to use a rolling mill? From what i know they’re good for drawing out stock but not good for setting welds that’s something a press would be more suited to

 

[HSC ///]

while it's simple in practice, There are so many details involved.

I don't know how much experience you have with laminating steel, but I would start with more simple materials and then build from there

I would start with a simple low alloy steel like 26c3 and Mild steel cladding and then nail down that process first

Then try switching to stainless cladding like 410 ss

and build from there, I don't think AEBL as a cladding is a good idea

as mentioned, you should set the weld before you roll it out

i'm going to guess that you're not quite getting enough soak time?

this might help
forge welding

 

[HighwaterKnives]

Getting part of it down. Thanks for the advice to start with 26c3 and 304 shown below. I've had success with 10v and 15n20 in small coupons, welding seams, working with 2000+f and stainless foil help.