Surfaces for life. The Hermes product program for grinding and fi nishing implants and surgical instruments ABRASIVES

Transcription

1 Surfaces for life. The Hermes product program for grinding and fi nishing implants and surgical instruments ABRASIVES

2 Hermes a competent grinding CONTENTS Hermes a competent grinding partner all over the world Page 2 Knowing how to grind and finish implants and surgical instruments Page 4 Whatever the situation Hermes products for pre-grinding and intermediate grinding and finishing Page 6 Hermes bonded abrasives we find individual solutions for pregrinding and for the final polish Page 8 Visit our website Page 10 AT HERMES, TRADITION HAS A FUTURE Hermes Schleifmittel is a German company located in Hamburg, with roots going back to The company is one of the world s key manufacturers of coated abrasives, and since 1993, it has also occupied a leading market position in the production of precision bonded abrasives. Hermes owes this market position to its insistence on unsurpassed quality. We feel an obligation to this tradition and it is our main priority for the future. This obligation is the greatest incentive there is, and we devote all our energy and commitment to it tradition shaping the future. Hermes maintains numerous production sites and sales offices in all the main industrial and emerging countries of the world, underlining its international commitment and its efforts to provide its customers with a competent local consulting service A SELECTION OF OUR SITES Headquarters in Hamburg, Germany 2 Hermes Schleifkörper GmbH, Dresden, Germany 3 Hermes Austria 4 Hermes USA 5 Hermes China 2

3 partner all over the world SUPPORTING NATURE AND THE ENVIRONMENT Compliance with national and international laws and regulations is one of the key principles of Hermes corporate policy and protection of the environment is a core constituent of our corporate responsibility. As a consequence, as long ago as 1996, Hermes was the fi rst European abrasives factory to be successfully audited on a voluntary basis in line with the EMAS (Eco-Management and Audit Scheme). The management system currently being implemented covers all areas of the company, with processes relevant to the environment and energy effi ciency, as well as to quality, being described and monitored internally as well as certifi ed externally by the TÜV-Nord organization in line with DIN EN ISO and QUALITY OUR TRADEMARK Bound to tradition on the one hand, yet a pioneering developer of innovative products on the other, Hermes places greatest emphasis on the production of high-quality, state-of-the-art abrasives. To enable this high standard of quality to be pursued and expanded still further in the future, the TÜV NORD CERT auditing company awarded the Hermes Group the quality seal for meeting the requirements of DIN EN ISO Our customers in other words you benefi t considerably from this reliability. Hermes France Hermes Great Britain Hermes Germany Hermes Poland Hermes Canada Hermes Romania Hermes Bulgaria Hermes USA Hermes China Hermes Brazil Hermes Singapore Hermes Austria 3

4 Knowing how to grind and The demand for orthopaedic implants and surgical instruments is rising steadily worldwide. The quality required from these kinds of products is enormously high. As a consequence, strict demands are also placed on the abrasives used to make these products: defined characteristic surface values with low tolerances and rapid throughputs throughout the entire grinding process. Hermes satisfies these requirements with a complete product program for every processing step (pre-grinding intermediate grinding finishing), the quality and economy of which are most convincing of all. PRE-GRINDING The pre-grinding stage grinds cast, forged or rough-cut blanks of implants or instruments, the majority made of stainless steel, titanium or chromium-cobalt alloys, using mainly grit sizes 36, 60 and 80. Primary applications Deburring and even out marks of cutting operations from initial production (e.g. turning or milling) Removing surface changes, e.g. layers of scale or tempering colors from preceding heat treatment processes Grinding to particular dimensions and shapes Photo: SHL, Germany This requires abrasives with convincing stability, high stock removal rates and long tool lives. To select the right abrasive, the backing needs to be as rigid as possible but as flexible as necessary. The most temperature-intensive grinding of the workpiece takes place at the pre-grinding stage and to ensure that entrained heat does not cause any structural changes to the workpiece surfaces, Hermes grinding belts are generally provided with an additional coating with grinding aid for this process step to ensure cool grinding. Recommended Hermes types High-performance CERAMIT belts with ceramic grain CN 466 Z, CR 456 Z, CN 466 X-flex Zirconia alumina grinding belts RB Z, RB YX Aluminum oxide grinding belt RB 346 X-flex 4

5 finish implants and surgical instruments INTERMEDIATE GRINDING Intermediate grinding serves primarily to prepare the surfaces of the workpiece as well as possible for subsequent fi nishing processes. Intermediate grinding uses mainly grit sizes 100, 120, 150 and 180. Primary applications Elimination of coarse marks of pre-grinding Reduction in surface roughness The end-fi nish desired by the customer defi nes the number of intermediate grinding steps and grit sequences required. FINISHING The fi nishing gives workpieces their fi nal touch. The main grit sizes used are correspondingly fi ne: 220 and fi ner. Primary applications Production of uniform visual/functional surfaces whilst maintaining characteristic surface values determined by specifi cations (e.g. degrees of gloss or roughness) Preparation for subsequent polishing operations (e.g. grinding with Hermes microlite polishing wheels) A special role is played by Hermes webrax abrasive web products which are used in the form of belts or wheels and are especially suitable for matte fi nishing stainless steel surfaces. Recommended Hermes types High-performance CERAMIT belts with ceramic grain CR 456 Z, CN 466 X-fl ex, CR 456 J-fl ex Zirconia alumina grinding belt RB YX Aluminum oxide grinding belts RB 417 YX, RB 346 MJ, RB 346 X-fl ex, RB 406 J-fl ex Recommended Hermes types High-performance CERAMIT belt with ceramic grain CR 456 J-fl ex Aluminum oxide grinding belts RB 346 MJ, RB 346 X-fl ex, RB 346 J-fl ex, RB 306 J-fl ex, RB 406 J-fl ex webrax abrasive web tools webrax-an 702 belt webrax-oa 713 GWS convoluted wheels webrax-oa 710 LMO fl ap wheels Stock removal comparison of Hermes J-flex cloth grinding belts Parameters: stainless steel, grit size P 120, stationary belt grinder 150 Stock removal rate (cum.) [g] CERAMIT CR 456 J-flex 120 RB 406 J-flex RB 346 J-flex Grinding time [min] 5

6 Whatever the situation Hermes products for pre- Hermes types CERAMIT CN 466 Z CERAMIT CR 456 Z RB Z RB YX Heavy-duty, stiff, high-performance abrasive cloth with ceramic grain and additional active ingredient coating, especially suitable for high grinding pressures Heavy-duty, stiff, high-performance abrasive cloth with ceramic grain and additional active ingredient coating, especially suitable for grinding titanium and for moderate grinding pressures Heavy-duty, stiff zirconia alumina abrasive cloth with additional active ingredient coating for low grinding temperatures Heavy-duty, semi-stiff z alumina abrasive cloth with active ingredient coating grinding temperatures, es suitable for dry-grinding sta Grit range + 36 to to , + 40, + 60, , + 40, + 60, + 80 Flexibility Primary applications Implants Surgical instruments Materials Stainless steel Titanium Chrome-Cobalt alloys Suitability for process Pre-Grinding Intermediate grinding Finishing Hermes types RB 306 J-flex CERAMIT CR 456 J-flex RB 406 J-flex RB 346 J-flex Very fl exible and adaptable aluminum oxide abrasive cloth with good stock removal rate for universal applications in grinding surgical instruments Very fl exible and adaptable high-performance abrasive cloth with ceramic grain and additional active ingredient coating, especially suitable for chromecobalt alloys and titanium Very fl exible and adaptable aluminum oxide abrasive cloth with special active ingredient bonding, especially suitable for grinding stainless steel Highly fl exible aluminum abrasive cloth with good removal rates for universal ons, especially suitable fo smallest workpiece r Grit range P 60 P 320, P to P 60 P 320, P 400 P 40 P 400, P 60 Flexibility Primary applications Implants Surgical instruments Materials Stainless steel Titanium Chrome-Cobalt alloys Suitability for process Pre-Grinding Intermediate grinding Finishing 6 Stiff Semi-stiff Flexible Very fl exible Highly fl exible

7 grinding and intermediate grinding and finishing irconia additional for low pecially inless steel RB 417 YX RB 346 MJ CERAMIT CN 466 X-flex RB 346 X-flex Heavy-duty, semi-stiff aluminum oxide abrasive cloth with additional active ingredient coating for universal application in grinding surgical instruments Flexible aluminum oxide abrasive cloth with very good edge-restoring force for universal applications in grinding surgical instruments, especially in manual grinding Flexible, high-performance abrasive cloth with ceramic grain and with additional active ingredient coating for low grinding temperatures In comparison to RB 346 MJ light more fl exible aluminum oxide abrasive cloth with very good edge-restoring force for universal application in grinding surgical instruments, especially in manual grinding, to P 60 P to P 60 P 320, P 400 oxide stock applicatir grinding adii webrax-an 702 webrax-oa 713 GWS webrax-oa 710 LMO microlite-polishing wheels Cloth-reinforced abrasive web with a fi ne grinding pattern, especially suitable for fi nishing and matte fi nishing stainless steel surfaces Convolutely wrapped, high-density and sturdy abrasive web wheel with aluminum oxide grain, especially suitable for matte fi nishing stainless steel surfaces Flexible but strong abrasive web fl ap wheel with aluminum oxide grain, especially suitable for matte fi nishing stainless steel surfaces Elastic and individually adjustable polyurethane-based polishing wheel with silicon carbide grain, especially suitable for producing very fi ne and high-quality surfaces , + 100, + 180, + 280, + 320, , + 180, to + 120, + 180, F 16 - F 600 (F 800) Different degrees of hardness possible Highly suitable Suitable Less suitable 7

8 Hermes bonded abrasives we find individual solutions for pre-grinding and for the final polish Hermes Schleifkörper GmbH in Dresden is one of Europe s leading bonded abrasives factories. Its extensive product portfolio enables Hermes to provide customers with application-specific and highly economical solutions for processes which both precede and follow grinding with coated abrasives. HERMES SUPERABRASIVES FOR CONSISTENT HIGH QUALITY AT A HIGH LEVEL OF AUTOMATION A great benefit of vitrified-bonded Diamond/CBN abrasives is that they can be dressed without subsequent sharpening. This increases the degree to which the dressing process can be both reproduced and automated, something which becomes especially clear when large numbers of items are ground. It simultaneously guarantees consistently high product quality. The Hermes bonding system allows the porosity of the tool to be adapted to a specific grinding task on an individual basis. Specific adjustment of the ratio of abrasive to pores furthermore makes it possible to keep grinding forces low and facilitate higher performance in the grinding process. TRY US OUT. WE WOULD BE PLEASED TO ADVISE YOU. Our experts would be delighted to advise you on your specific grinding task and will develop a customer-optimized solution involving our abrasives. For contact and product information, please visit our website at: In particular, Hermes Superabrasives make it possible to grind economically high-alloyed steel which are hard to cut. As implants and surgical instruments are frequently made of stainless steel, titanium or chrome-cobalt alloys, Hermes vitrified-bonded Diamond/CBN abrasives are particulary suitable for grinding workpieces of this nature. These abrasives are characterized above all by burr-free grinding of the materials mentioned; this reduces re-grinding steps, improving the efficiency and economy of the entire grinding process. 8

9 Product description HERMES MICROLITE POLISHING WHEELS FOR HIGH-QUALITY SURFACES Hermes microlite polishing wheels satisfy the most discerning requirements relating to the gloss and fine finish of surfaces when a variety of materials are ground. They are elastic and their outstanding adaptability makes them especially suitable for finishing and micro-deburring. An elastic, polyurethane-based bond incorporating silicon carbide grain allows microlite polishing wheels to adapt to individuallyshaped workpiece surfaces. The finishing results are fine surfaces with a high degree of trueness to specified workpiece surfaces. In many cases, microlite polishing wheels lead to grinding steps being saved during finishing and thus to higher productivity and economy. Hermes microlite polishing wheels should preferably be used where high-quality surfaces cannot be achieved using other abrasives. Grain Silicon carbide, green Grit range F 16 - F 600 (F 800) Bonding Polyurethane BU10 - BU70 Hardness Shore A Wheel Ø 40 mm mm Wheel width 10 mm mm Permitted cutting speed Product engineering Depending on hardness 18 m/s - 35 m/s Stock removal on the workpiece is determined to a significant extent by the hardness and adaptability of the microlite bonded abrasives. Stock removal Low High Hardness Low High Adaptability Experience of grinding processes using conventional bonded abrasives or coated abrasives cannot be transferred to microlite bonded abrasives in terms of grit size and grinding pattern achieved. Please ask our technical experts for references. Conventional dressing tools can be used to profile microlite bonded wheels. Bondings and hardness range Bonding Hardness (Shore A) BU10 Very soft BU20 Soft BU30 Medium soft BU40 Medium BU50 Medium hard BU60 Hard BU70 Very hard Safety instructions The diameter of the clamping flange should be 2/3 of the diameter of the microlite polishing wheel. The FEPA safety recommendations for the correct use of bonded abrasives should be observed when grinding. 9

10 Visit our website Hermes Group websites are continuously updated and form an important information platform for customers and interested parties. Here you will fi nd virtually all the information which is useful when planning and purchasing Hermes abrasives. Of course our website is set up on an international basis. Please use the different access options to enable you to obtain information about Hermes abrasives tailored to your specifi c regional market. Europe North and Central America Asia and Australia 10

11 Hermes websites use databases to inform you about new products and application solutions and to provide you with facts and fi gures about the Hermes Group. Numerous useful functions help you fi nd out quickly and easily everything you need to know about Hermes abrasives. In the Product Finder for example, enter simple search queries to fi nd the correct Hermes type and have its key product information (such as product structure and benefi ts) and primary applications displayed. Alternatively, use the interactive Contact Finder for a list of Hermes experts (both offi ce-based and sales) all over the world, of course. Regardless of where you are on our websites, whether in the Product Finder or in the application solutions or in the Service area you always have the option of downloading information about our products and application solutions for immediate use on your PC, tablet or smartphone. Try us out. We look forward to your visit. 11

12 HERMES ABRASIVES LTD. 524 Viking Drive Virginia Beach, VA Voice: Fax: US The right to make amendments is reserved.