So Is It Possible To Grind Faster Using A Concrete Grinder?
The main thing that causes a diamond to stop cutting is that the matrix that holds the diamond chips is not wearing out fast enough to keep fresh diamonds exposed and the diamond chips lose their edge. This means that the diamond chip ends up not protruding out of the segment and therefore rounding off and not cutting the concrete or stone. Hence, the grinding process slows down a lot. Faster diamonds or diamonds that cut faster have a feature common to them. Changing the following variables within the disc or plugs and segments mounted on them creates a faster cut:
– Diamond Grit:
Most diamonds are #16 grit – Which is very aggressive for cleaning up concrete slabs.
But they go all the way up to #3,000 grit – Which is for very fine polishing of concrete slabs.
You will mostly use #16 & #30 grit – For removal and prep work on concrete, anything above that is heading towards polishing the concrete slab.
– Number Of Segments:
Using a diamond disc with fewer segments means that there is more pressure per segment applied to the cutting surface. This wears the matrix faster and exposes the diamond chips.
– Softer Matrix That Holds The Diamond Chips:
This means that the matrix will wear at the same rate as the diamond chip or slightly faster meaning there is always a fresh edge to the diamond itself.
Here are a few tips that you can try: (You can try more than one of these at a time to grind faster).
Turn Your Dust Extraction Down:
– This will leave the dust from the grinding process under the head of the grinder and this creates wear to the matrix of the diamond segment which exposes the diamond chip again)
Add Weight To The Head Of The Concrete Grinder If The Power Available Permits:
– This will put more pressure on each segment and wear out the matrix to expose the diamond chips.
– More pressure per segment helps wear the matrix at the same rate as the diamonds wear.
– The extra weight does little to the wear factor of the diamond chips.
Use “Soft Bond” Discs With Fewer Segments To Overcome The Issue:
– The softer bond refers to the matrix, not the diamonds. the result of a softer bond is that the matrix wears out faster and keeps the diamonds fresh and exposed.
Throw A Little Bit Of Sand (Or Dust From Previous Grinding Work) Onto The Slab:
– This is where the matrix away which will increase the chance of opening up the diamonds again.
Add A Misting Of Water To The Concrete:
– This will make a slight paste between the diamonds and the concrete which will increase the chance of opening up the diamonds again.
Grind Or Cut On A Soft Concrete Slab To Open Up Fresh Diamonds:
– Using a known soft slab or even a paver can open the diamonds up again so they have a fresh edge.
Reverse The rotation If That Function Is Available On Your Machine:
– Reversing the rotation of the machine can change the dynamics of the way the diamonds are being worn out and give a fresh edge to the diamonds.
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