This is the company I have purchased equipment from in the past.

http://www.em-chicago.com/

Also Google degausser or degaussing equipment.

You should assure that your tooling does not get magnetized before accepting it. Put it in your Purchase order and check before acceptance.

You should also look for electrical faults that may have caused the magnetism in your equipment.

Beware the urban legends about the truck that parked under the high voltage lines at the truck stop.

Usually magnetism comes from contacting either a tool or magnetic chuck or magnetic lifting device when the tool is made.(You use the word mould- moulds are for casting, using the word tool or die is more common for stamping.)

In my experience the "sudden blow from the hammer to realign the magnetic domains" does not work on items greater than 1kg.

I have heard many stories about wrapping the wires from a welder around the item and then striking an arc. Alas, I have never been able to meet the actual person or workpiece that did this successfully.

good luck, magnetism and hydrogen embrittlement bring out the most pseudo of pseudo science claims in the metalworking field...

If you have a gaussmeter, and can tell us the field strength, that additional information may help us assist you.

milo

Milo, you wrote: "

You should also look for electrical faults that may have caused the magnetism in your equipment."

Many years ago, I helped install a battery of engineering workstations at a major oil refinery in preparation for a CAD software training I would conduct.

When the equipment was turned on, the monitors would not function correctly and it drove everyone nuts trying to diagnose the problem.

Eventually, the problem was traced to the magnetic field surrounding a 440 volt power buss hidden in the wall.

I'm not an EE so my understanding of such matters is limited.

Still, some of the high speed presses in the stamping department I was once accountable for (QA) drew enormous amounts of current.

How likely is it that a stamping die might become magnetized in such an environment?

Thanks

L.J.

LJ, I'm not a iEEE either, but a short in a machine can allow the current to pass through the equipment and magnetize it.

I had that happen to a medart two roll straightener in a prior life. the rolls became magnetized. pegged our meter at 50 gauss, probably were over 100.

And of course, every bar that touched the rolls became magnetic, so every bundle had to be degaussed.

I don't recall the details, but there was an electrical fault involved.

We sent the rolls out to be demagnetized once the electricians fixed the wiring.

This happens occasionally in multi spindle screw machines too. I get calls from one or two of my clients most years for help with magnetic issues.

milo

Thank you so much, Milo. I think, your suggest useful for me... I am going to reply to you for results... Regards.