Unstrained or loose metal in a stamping can result in an oil canning effect.
Remove oil from sheet metal.
This will leave bare spots that will oxidize under heat and create voids.
Wd 40 is safe on metal.
Remove the excess with a soft cloth or paper towel.
Remove the oil stain by spraying a little wd 40 directly on the oil stain.
It often can be seen in the walls of deep drawn square or rectangular shells see figure 1a and figure 1b caused by the imbalance of metal flow into the drawing cavity see figure 2.
Buff your metal piece to a shiny luster with a soft nonabrasive cloth.
Step 5 repeat the steps if necessary until the oil stain is gone.
Getting the oil stains out of your sheet can be a real nuisance if they don t come out during the first series of steps as mentioned above you will have to repeat steps 1 2 and 3 to completely remove the stains before putting the sheets into the dryer.
It is essential to remove oil and grease for a lot of reasons.
First put on a pair of rubber gloves a dust mask and some protective eyewear.
The purpose of massage oil is to enjoy its soothing effects without having to worry about stains.
Oil removal from steel prior to patination.
You must remove all oil and grease.
Very simply oil canning is the result of uneven metal flow during a drawing operation.
An oily base metal will repel the flux.
Working with rust removal chemicals can be dangerous so make sure you take the proper safety precautions.