Founded in 2007, Dongguan Merrock Industry Co., Ltd specializes in researching&developing, production and export of all kinds
of floor grinder machines, abrasives and diamond tooling. We also produce stone&concrete chemicals for the construction industry.
Merrock has now been developed into a leading company in China
serving the global market. We are renowned for the high quality and
reliability of our products. We choose superior spare parts for our equipment to make sure they run smoothly and durably.
We also provide OEM/ODM service to satisfy your needs. At present,
Merrock has been spread all around the world, and has earned a
great reputation for our products.
How to Grind the Hard Concrete?
As the dust from hard concrete is soft and unabrasive, the metal
matrix that the segment is made of needs to be 'soft bond' and
easily eroded to expose the diamonds. Often having a coarser grit
can be beneficial because it may produce coarser dust to help erode
the matrix.
In addition, reducing the contact area with fewer segments makes a
difference. This also has the effect of increasing the weight per
square inch on the surface so that the diamond grit will
occasionally crack a little bit off the peak to create a fresh
sharp peak and start grinding again.
Things need to noted when grinding hard concrete
1. Use diamond tooling with a soft bond or less segments to grind.
And increase the weight on the diamond tooling.
2. Do not use hard bond diamond tooling on hard concrete since they
will almost certainly wear out incredibly fast.
3. Turn down the vacuum so there is plenty of dust under the
machine. This will help the diamonds to expose. Careful addition of
sand may also help. Don't overdo sand or it could cause premature
wear.
4. Inspect your diamond tooling when grinding. If there is hardly
any diamond exposed out of the matrix, and/or the diamond tooling
is getting hot, stop and change to a softer bond or less segments.
Tips for grinding hard concrete
When the concrete is hard, often wetting it before grinding helps
to expose the diamonds a little more. And grinding will be more
productive. You can also try spreading a small amount of sand on
the floor and lightly wetting it to help further break down the
bond of the diamonds.
