What are the common problems of floor grinding machine application?

1.What is the difference between ground concrete and polished concrete?

Concrete grinding is used to remove unwanted coatings or concrete features. Grinding is almost always a step you perform before another process. For example, before installing tile, paint, epoxy, linoleum or other floor coverings...or concrete polishing, remove old adhesive to get to the surface. The purpose of grinding is to restore the concrete surface after pouring and troweling to its original state.

Concrete polishing is the process of making concrete "glow", that is, beautifying it. It is achieved by using increasingly finer and finer diamond polishes until the desired look is achieved, then "locking" it with densifiers and sealants. Dyeing is usually done after polishing in order to obtain patterns, artwork, company logos, etc.

Ground grinding effect display

2.Can your machine do grinding and polishing at the same time?

yes. You can grind the ground with our machines, then remove the grinding attachment and install the polishing attachment. It's a simple process using simple tools that only takes a few minutes.

Floor preparation for big floor jobs is often times the bulk of the work. That's why we are here to talk about how to add ease and speed up your floor jobs with a concrete grinder.

Our grinders are available in various models, and different models are suitable for different construction areas and construction surfaces, If you're interested in learning more about them, read on to find out.

3 What Applications Are They Used For?

Concrete restoration can oftentimes require tedious and laborious floor preparation. Pre-existing coatings, surface imperfections, residue, organic matter, oxidation, and other contaminants are some of the things that build up on floors and need removal in order to restore.

Concrete grinders come in handy wherever a pre-existing concrete floor needs to be completely smooth and free of any organic or non-organic material—typically for concrete restoration sealing purposes.

4.How Does a Concrete Grinder Work?

A concrete grinder is a machine used as a finishing tool for floor restoration. It levels and smooths out surfaces by the use of rotating discs engineered with abrasive diamond bits.

5.What kind of grinders do you have?

Concrete grinders can be handheld, walk-behind, or even ridden. 

HAND-HELD CONCRETE GRINDERS

At times walk-behind grinders aren't able to get into corners or tight areas. That's where hand-held grinders come in handy. They're smaller and offer more maneuverability in smaller areas like corners, etc.When large areas of concrete need resurfacing, walk-behind grinders are used. There are many different types and sizes of walk-behind grinders available. The two main categories are rotary grinders and planetary grinders.

ROTARY GRINDERS

Rotary grinders use a single large pad that spins at high speeds. Because these grinders have a higher rotational speed and are heavier, they are great for jobs that require heavy removal of surface matter.

A skilled operator will use the advantage of a heavy machine with higher-rotation speed to remove thick layers of mastic or paint. Rotary grinders can also create a better polish on concrete floors if done right.

However, because they're heavier and have high-speed rotating discs, they're often more difficult to maneuver. These grinders take more training in order to operate skillfully. Rotary grinders can often leave irregular scratch patterns in the concrete if the operator is not correctly trained. 

PLANETARY GRINDERS

Instead of only using one disc like the rotary grinder, planetary grinders make use of multiple pads to get the job done. These pads spin simultaneously albeit at different speeds. Multiple discs with different abrasiveness allow a planetary grinder to remove material and finish a concrete floor at the same time.

These grinders are more lightweight and easier to maneuver than the rotary grinder. Their design allows the operator to maneuver in straight lines without having to struggle.

Because they're more lightweight and easier to operate,  They're ideal for jobs that don't require heavy concrete restoration—like smoothing and finishing a residential garage floor for an epoxy coating.

6.About dry and wet grinding

When using a grinder for floor restoration, there sometimes is a question of whether to dry or wet grind. Most floor grinder operators will grind dry for the primary reason of not having to clean up a soupy mess.Dust is generated during the dry grinding process. To prevent dust, you can match the grinder with our RV series industrial vacuum cleaner!

In addition, our machines above R460 can be used for wet grinding. During the wet grinding process, according to the specific ground conditions, the corresponding counterweight iron can be added to increase the grinding force of the grinding head.

7.About diamond tools

Diamond tooling plates consist of diamond segments that are bonded to a backing plate or sometimes a removable block insert. The diamonds are embedded into a metal or resin block that eventually wears away from use—exposing more diamond segmented layers.

Diamond tools work best for jobs that require removing thin films of coatings that have a high hardness value, such as urethanes and epoxies. They come in various grits and their applications include removing minor surface imperfections and polishing.

One thing that is often overlooked when using diamond tooling is the bond hardness of the material that holds the diamond segments. In order to achieve the best efficiency and to give maximum life to the tool, use a hard bond when grinding soft materials and a soft bond for hard materials. 

8.How to choose the right grinder for ground grinding?

Some concrete grinders are more versatile than others while some grinders are more job-specific and take more skill to operate. There's no doubt that using the right type of high-quality grinder can speed up job productivity and deliver professional results.

Our floor grinders of the R460 model and above all adopt the planetary structure, which greatly increases the speed of the grinding disc, so the efficiency is also significantly improved. Because the speed of the box body is relatively low, the work is safe and reliable. The planetary polishing disc includes a large turntable mounted on the frame and driven by the prime mover to rotate, a plurality of rotatable planetary polishing blocks are installed on the large turntable, and the rotating shaft of each planetary polishing block is provided with a transmission wheel,

It is characterized in that: the planetary polishing blocks are distributed on at least two concentric circles, the central axis of the concentric circles is collinear with the central axis of the large turntable, and the transmission wheels on the rotating shafts of all the planetary polishing blocks share a transmission belt and a sun gear. Coiled meshing, the central axis of the sun gear and the central axis of the large turntable are collinear, the sun gear and the frame are circumferentially fixed and axially slidably coupled. The rotation and revolution of all planetary polishing blocks can be realized with one prime mover, which simplifies the transmission mechanism. On the other hand, since the planetary polishing blocks are distributed on at least two concentric circles, the orbital orbits of the planetary polishing blocks will not completely overlap, thereby improving the uniformity of polishing and grinding operations and improving the operation efficiency.

If you want to know how to choose the right concrete grinder for your job, You can fill in the form below to get in touch with us, We will recommend reasonable machines and excellent solutions for you! thanks.