Electromagnet Release

[amit_sarda]

magnetism depends on vasious factors.

stickness depends on the material of the job which is being grinded.

if the material is hardended steel or steel with high carbon content, it has a tendency to retain magnetism even after the electrical power is cut from the magnetic chuck.

there are a few methods with which we can remove the job.

1. after the demagnet operation has been done from your reversing drum switch (which should be spring loaded presently), try demagnetizing the job using a platent demagnetizer http://www.sardamagnets.com/showtable.asp?prodid=100 . This is a crude method, but can be used

2. you can use the digital controller like http://www.sardamagnets.com/showtable.asp?prodid=136. this is a variable DC demagnetization cycle. primarily what it does is it passes first DEMAG at 100% then MAG at 80% then DEMAG at 70% and like that for 2 seconds with variable power. this will reduce the induced magnetism in the job making it easier to release.

Amit Sarda
www.sardamagnets.com