MDC Mungo Diamond Cut MDG Mungo Diamond Grind

Diamond Tools For more than 80 years diamond tools are used for cutting and grinding stone Advantages: ▪ Precision cutting ▪ Protection of surrounding material ▪ Low noise ▪ Dust-free Diamond is the hardest known material in the world

Diamond Tools You will find three main producers of synthetic diamond: Element Six General Electric (USA) Il Jin (Korea) Diamond Tools were invented developed in Korea The following quality characteristics are significant Degree of purity (no oil inclusions of the production process visible) Defined breaking strength Sharp edges Consistent geometry

Diamond Tools Composition of the segments Metal powder Diamond Bronze Copper Iron Metal carbide Hard metal Tungsten carbide Diamond The segments are formed by a technology called sintering. Therefore, the mixture get heated under high pressure, whereby the melting point of the main components doesnt get exceeded. Like this, segments gets kept in shape.

Diamond Tools The diamond size, form, purity and concentreation defines the stock removal rate and the lifetime of a diamond tool. The concentration «C» shows the ratio of diamond proportion and bonding. A good diamond tool has a concentration between C25 and C35 which means an amount of approximately 10% diamonds in the segment. The bond of the segment must be suited to the material that has to be cut. Abrasive materials require a hard bond – hard materials require a soft bond

Connection of the segments There are different methods of attaching segments to the steel core Sintered blades Cutting edge covers are directly sintered to the steel core; the cover is bonded to the core through heat and permanent pressure Cold pressed: 600°C Hot pressed: 900°C Laser blades Segments are laser welded to the steel core. Each segment is procuced prior to the welding procedure; this type of production allows better adaption of metal bond, temperature and pressure to application. High pressure temperature method Under high pressure and temperature the segments are bonded in large press mould directly to the core. The beneficial keyed bond guarantees a high safety against a loss of the segments. Hot pressed: 800°C Brazing Brazing is used, in particular, for largesized blades and wet cut (Diameter > 600mm) Electroplating Electroplating of diamond grit is used for cutting marble or glass fiber reinforced plastics.

Print ⑨ ⑩ ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ① Brand name ② OSA-Stamp ③ EN-Standard ④ Possible machines ⑤ Product name ⑥ Safety instructions ⑦ Rotation direction ⑧ Dimension and max. rotation speed ⑨ Producer ⑩ Production number ⑨ ⑨ ⑩ ⑩ (The Norm EN 13236 regulates the production process as well as the safety instruction for cutting discs)

Characteristics OSA (Organization for safety abrasives) (Yearly inspection-> stricter as the EN-Norm) EN-Norm Laser welded Segment hight 10mm Fast cutting speed Silent work Long life span Working without water cooling

Positioning

Ground materials

Range MDC and MDG Art.Nr. Product name Diameter Inner diameter Segment hight Segment size Ø in mm in mm 2320125 MDC Laser Beton 125x22,2 125 22,2 10 2,2 2320230 MDC Laser Beton 230x22,2 230 2,6 2321125 MDC Performer 125x22,2 2,1 2321230 MDC Performer 230x22,2 2,8 2322125 MDC Power M 125x22,2 2322230 MDC Power M 230x22,2 2323125 MDC Viper 125x22,2 1,4 2324125 MDC Cobra 125x22,2 2,5 2324230 MDC Cobra 230x22,2 12 2420125 MDG GC-Hard 8,3 4,5

MDC Diamond Cut – LASER BETON 2320125 MDC Laser Beton 125x22,2 2320230 MDC Laser Beton 230x22,2 Low priced diamond blade with good life span cause of laser welded segments

MDC Diamond Cut – PERFORMER 2321125 MDC Performer 125x22,2 2321230 MDC Performer 230x22,2 Reinforced core for less vibration and precise cut Allround blade for a multitude of different applications

MDC Diamond Cut – POWER M 2322125 MDC Power M 125x22,2 2322230 MDC Power M 230x22,2 Patent-registered segment geometry for fast cutting speed and extra long life time Cut in the metal core to reduce noise emission

MDC Diamond Cut – COBRA Best diamond blade for natural stone 2324125 MDC Cobra 125x22,2 2324230 MDC Cobra 230x22,2 Best diamond blade for natural stone

MDC Diamond Cut – VIPER 2323125 MDC Viper 125x22,2 Best diamond blade for very hard tiles (stoneware)

MDG Diamond Grind – GC-HARD 2420125 MDG GC-Hard Fast and smooth grinding of different concrete surfaces

Trouble-shooting Broken diamond edges Reason in relation of the machine Machine too strong R.P.M too low Feed to high Reason in relation of the tool Diamond quality too low Diamond concentration not sufficient Segment bonding too hard Solution Sharpening on a sharpening stick Changing the machine or diamond blade

Polished diamond edges Trouble-shooting Polished diamond edges Reason in relation of the machine Machine power too low R.P.M too high Feed too low Reason in relation of the tool Diamond quality too hard Diamond concentration too high Reason in relation to the work piece Rough inclusions of e.g flint or quartzite Application error Blade mounted misdirected Solution Sharpening on a sharpening stick

Trouble-shooting Blunt segment Reason in relation of the machine Machine power too low R.P.M too high Feed too low Reason in relation of the tool Wrong substance of content (segment) Segment bonding too hard Solution Sharpening on a sharpening stick Changing the machine or the diamond blade

Blue colour on steel core or segments Trouble-shooting Blue colour on steel core or segments Reason in relation of the machine R.P.M too high Reason in relation of the tool Insufficient cooling during cutting process Dry cutting in reinforced concrete Excessive use of the tool Solution Wet cutting (cooling), observe cooling-off periods

Thank you for you attention!