John, Sharp edges of pre-plate can be a real problem. And deburring can cause the pre-plate to rust. I'm told you can't run a deburring process on pre-plate - for that reason. I've also been told that a sharp tool will leave less sharp edges on the finished piece, and I'm not only skeptical of that - but even if it is true, concerned also of how long the tool will remain as sharp as it is then dependent upon. Some years ago I bought a sharp edge tester, because all of our bandaged fingers and bloody prototype chassis' were not enough to convince a particular mechanical engineer on that first pre-plate project of the problem at hand. I do admit that we have in some instances allowed the use of pre-plate since - because in those instances it met our criteria - I'm not certain I recall what they changed to achieve that, but I do keep an eye on it.
Best regards, Stephen At 11:33 AM 10/2/2002, Crabb, John wrote:
Has anyone encountered problems in the use of "pre-plated" sheet steel in IT equipment metalwork ? Typically such material is cheaper to use than having to plate parts after they have been produced, but there may be issues with sharp edges produced when the material is punched out, and with rust on the edges which are not protected. Regards, John Crabb, Development Excellence (Product Safety) , NCR Financial Solutions Group Ltd., Discovery Centre, 3 Fulton Road, Dundee, Scotland, DD2 4SW E-Mail :[email protected] Tel: +44 (0)1382-592289 (direct ). Fax +44 (0)1382-622243. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
