There is no magic technique that will give you a flat piece from wrinkled piece.
How to flatten warped sheet metal.
Don t know about flattening but i found that sand or bead blasting one side of sheet aluminum will put a bow in the metal bowing toward the blasted side.
Roger cook started work for.
This restraint creates high residual tensile stress that causes the weld to act like a stretched rubber band with the workpiece holding the ends figure 1 for this reason when the clamps that hold the workpiece are removed the base metal is allowed to move or spring.
7 long 1 wide and 1 8 thick.
I don t think the bow is a heat warp i think it s a buckle caused by to much metal at the top caused when the bottom portion of the transom shrunk after the weld cooled.
I ve tried placing it between pieces of mdf and leaving it in a vise for a couple of days but it just springs back to its shape.
When recycling scrap metal and when fixing broken metallic parts technicians and fabricators sometimes need to straighten out metal.
Roger cook explaining how he uses hot and cold to tighten the steel plate to remove heat deformations.
To make the metal straightening process easier fabricators often apply heat.
My experience with flattening sheet metal hasn t been all that positive in terms of getting it absolutely flat but serious improvements can be made.
Sheet metal that won t flatten could have had an area of it expanded.
Put a nice matte finish on the piece but it wasn t flat anymore.
First off you need to understand that this is a metal shaping operation.
However too much heat can damage the metal.
The simple act of heating metal during the welding process causes stresses within the steel that often lead to distortion or bending.
Understanding how the metal reacts to these stresses and applying a few simple tricks during the welding process can minimize distortion and bending making your welding process much faster and more efficient.
Over time it has gotten a bit bent out of shape sort of like a sine wave.
If you must have a flat piece you should just buy a new flat piece.
Working with sheel metal.
The weld wants to shrink as it cools to room temperature but is restrained from doing so by the adjacent cold base metal.
You re on the money about annealing the work it won t straighten it but it will ease your job.
The metal has to do something if there is to much of it.
