1. MDC Mungo Diamond Cut MDG Mungo Diamond Grind

2. 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

3. 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

4. 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.

5. 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

6. 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.

7. 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 regulates the production process as well as the safety instruction for cutting discs)

8. 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

9. Positioning

10. Ground materials

11. Range MDC and MDG Art.Nr. Product name Diameter Inner diameter
Segment hight
Segment size
Ø in mm
in mm
MDC Laser Beton 125x22,2
125
22,2 10
2,2
MDC Laser Beton 230x22,2
230
2,6
MDC Performer 125x22,2
2,1
MDC Performer 230x22,2
2,8
MDC Power M 125x22,2
MDC Power M 230x22,2
MDC Viper 125x22,2
1,4
MDC Cobra 125x22,2
2,5
MDC Cobra 230x22,2 12
MDG GC-Hard
8,3
4,5

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

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

14. MDC Diamond Cut – POWER M
MDC Power M 125x22,2
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

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

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

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

18. 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

19. 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

20. 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

21. 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

23. Thank you for you attention!