VIEWS: 12 PAGES: 4 POSTED ON: 2/18/2014 Public Domain
O&J Denmark had the idea to re-work dies and rolls over three decades ago with an intention to assist the market demand to grind and re-countersink worn dies into ‘as-new’ dies at a time when dies were very expensive.
Digital Re-print - January | February 2014 Managing mill maintenance: Getting your dies and rolls re-worked locally to global standards Grain & Feed Milling Technology is published six times a year by Perendale Publishers Ltd of the United Kingdom. All data is published in good faith, based on information received, and while every care is taken to prevent inaccuracies, the publishers accept no liability for any errors or omissions or for the consequences of action taken on the basis of information published. ©Copyright 2014 Perendale Publishers Ltd. All rights reserved. No part of this publication may be reproduced in any form or by any means without prior permission of the copyright owner. Printed by Perendale Publishers Ltd. ISSN: 1466-3872 www.gfmt.co.uk MILL MAINTAINANCE Getting your dies and rolls re-worked locally to global standards by Leif Wolf, Director, O&J Hojtryk AS, Denmark O &J Denmark had the idea to installed properly with particular attention of wear parts. It is worth remembering that re-work dies and rolls over three being paid to positioning of the roll assembly a full refurbishment and cost will depend on decades ago with an intention correctly against the die production surface. the work required. to assist the market demand to grind and Failing to fit machines properly can result in Deciding when to ship a die for re-work- re-countersink worn dies into ‘as-new’ non-uniform wear in the ring die and non- ing is always a balance. Ultimately it comes dies at a time when dies were very uniform pellets. down to a choice between controlled main- expensive. tenance versus damaged based maintenance. Die- and roll-refurbishment A full refurbishment includes cleaning The machines used for this work could O&J Denmark has been able to establish the die and checking for cracks by using the not be bought at the time so we undertook a strong brand in the marketplace, servicing O&J HPJC21 High-Press Blowout System by the challenge to design, develope and manu- clients over very long distances. means of water only – and without chemi- facture such equipment ourselves. Thanks to great trust from all our clients cals. The advantage of using this method is Since then many others and some we can offer a full re-working set up includ- that the water is strong enough, blowing out from different perspectives have come up. ing logistic solutions. with 1.250BAR/aprox 17,000PSI, to dislodge However, O&J has been at the very fore- The mills book all shipments directly to stubborn material without harming the press front of this industry and still is. our freight forwarding company operating channels. Clients of interest include: in their region, bringing dies and rolls to our Next, comes grinding the die production • Feedmills - for livestock such as pigs, re-working center in Esbjerg, Denmark and surface, skimming level and machining using poultry and cattle, shrimp feed returning with the same afterwards. the O&J DG1700-1 grinding machine specifi- • Bio/wood mills including palm fibre mills Simple but highly effective – mills pay cally designed for dies and rolls. • Waste mills no waste time!, 1 click and the goods are Finally, having it re-counter sunk again • Others booked and automatically returned again by using the O&J CSV14-3 counter sinking The benefits from die- and roll- when the re-work is complete. machine for ring dies. refurbishment include: In other regions throughout the g-lobe • Increases life time of pelleting this may be different due to existing infra- Differences between regions equipment structure, labour cost etc. In the northern states of Europe and • Increase throughput At the re-working center dies and rolls Scandinavia, mills generally carry out re- • Significant reduces power usage are checked on arrival, their actual worn working to both ring dies and rolls. • Securing higher pellet quality condition, any damage, etc, with assessment Ring dies get re-grounded, re-counter A feedmill is only as strong as its weakest of how re-working would be or not be sunk and cleaned up - schematically dies link. Each machine has to work as its best. profitable to the client. get re-worked two or three times a Investing time and money in feed for- It is a partnership. If a die is wrongly worn lifetime, depending to production and die mulation can be quickly written off if the a contact shall follow from here giving a note condition. pelleting machinery used isn’t up to scratch. to the client helping him back on track again. Rolls are normally ground the first time For example, a good client is a mill and then given a new roll shell the next Installation and usage running controlled production systems and time. Also, items such as axles, bearings, From the start, machines need to be therefore will have a controlled degradation cover plates and seal collars are cleaned up 35 | January - February 2014 Grain &Feed millinG technoloGy M and controlled before re-assembling which centre in Cebu, which is now giving such includes a new roll shell. re-working possibilities to local mills in In other regions throughout the globe, that region. Even though there have been this may be different due to existing infra- a few obstacles to overcome, the region structure, labour cost, etc. shows great interest in the local set-up However, we register from those other having their dies and rolls re-worked regions an ever growing interest using our there and generally following the same techniques and machines to set up service ideas as we operate here. More inforMation: centers for re-working. We invest great inter- Apart from Europe, O&J machines are O&J Højtryk A/S est in being at their service – working together in operation in India, Thailand, Singapore, Tel: +45 75 14 22 55 facing a common future and possibility. Korea, China, USA and Canada and there’s Fax: +45 82 28 91 41 A fine example is that a year ago we more to come – O&J is creating a future Email: email@example.com fulfilled delivery of technical equipment together with dedicated clients throughout Website: www.oj-hojtryk.dk to the Philippines for a local service the globe. Empower your employees with tools and problem-solving skills at IAOM’s Fundamentals of Milling I and II courses, offered at Ocrim’s International School of Milling Technology in Cremona, Italy. Fundamentals of Milling I: March 17-21 Die and roll re-working machines Fundamentals of Milling II: March 24-28 Technical training courses that combine lectures and discussions with hands-on laboratory and pilot-scale milling exercises. Experience this unique learning environment where classroom, lab, manufacturing plant, and pilot mill all come together. International Association of Operative Millers 10100 W. 87th Street, Suite 306 Overland Park, KS 66212 USA www.oj-hojtryk.dk T: +1 913-338-3377 | F: +1 913-338-3553 Phone: +45 75 14 22 55 O&J Højtryk A/S E: firstname.lastname@example.org Fax: +45 82 28 91 41 Ørnevej 1, DK-6705 mail: email@example.com Esbjerg Ø For more information, visit: www.iaom.info/education CVR.: 73 66 86 11 LINKS This digital Re-print is part of the January | February 2014 edition of Grain & Feed Milling Technology magazine. Content from the magazine is available to view free-of-charge, both as a full online magazine on our website, and as an archive of individual features on the docstoc website. Please click here to view our other publications on www.docstoc.com. January - February 2014 first published in 1891 • See the full issue • Having no choice is not reasonable The quest for a healthier snack • Visit the GFMT website In this issue: • NIR: Production control in • • Contact the GFMT Team Design of an rapeseed processing efficient intake using NIR technology pit dedusting system • Keep running the state-of-the-art in costs down technology operating en-masse chain conveyors • Silos special: • Getting your • Subscribe to GFMT Bulk storage dies and rolls challenges re-worked locally to global standards INCORPORATING PORTS, DISTRIBUTION AND FORMULATION A subscription magazine for the global flour & feed milling industries - first published in 1891 To purchase a paper copy of the magazine, or to subscribe to the paper edi- tion please contact our Circulation and Subscriptions Manager on the link adove. INFORMATION FOR ADVERTISERS - CLICK HERE Article reprints All Grain & Feed Milling Tecchnology feature articles can be re-printed as a 4 or 8 page booklets (these have been used as point of sale materials, promotional materials for shows and exhibitions etc). If you are interested in getting this article re-printed please contact the GFMT team for more informa- tion on - Tel: +44 1242 267707 - Email: firstname.lastname@example.org or visit www.gfmt.co.uk/reprints www.gfmt.co.uk
Pages to are hidden for
"Managing mill maintenance: Getting your dies and rolls re-worked locally to global standards"Please download to view full document