Hi Sarah, Our Durston D2/120 rollers are somewhat worn in the centre and rolled out sheet is over-thinned and buckled at the edges. What do you recommend we do about that? As I'm in New Zealand I expect I'll be taking the rollers down to a local engineers for grinding down and resurfacing. 1. How do you recommend we instruct the engineer? 2. How deep is the hardening on your rollers? Will we need to get the engineer to harden the newly ground surface?
Dear Brian & All
-
Give the engineer specific instructions that main part of roll
must run true with bearing journals. Normally between 1-10 thou will
clean up all marks. Also, both rolls must end up being the same
diameter. -
You will not need to re-harden the rolls after grinding if you
only remove 10 thou and as mentioned on several postings on Orchid a
few weeks ago it is not possible. Roll will turn black, distort and
probably crack.
If you send the rolls to us we will regrind them free of charge Sara
Durston Durston Rolling Mills, Progress House, Hospital Hill,
Waterside, Chesham, Bucks. HP5 1PJ, England http://www.durston.com
sdurston@durston.com