The grinding disc is one of the tools in the floor renovation process. The grinding discs suitable for the floor treatment of different materials are also different. The following SANG diamond tools will introduce the factors that affect the selection of grinding discs.
flatness of the ground
Manually troweling and leveling the ground or the loose and severely damaged old ground, it is necessary to level or remove the loose surface layer, and it is necessary to use a high-power grinder, and choose a grinder with strong grinding force, such as a concrete diamond grinding disc, which is suitable for leveling. piece. Cement self-leveling ground or mechanically leveled ground with a trowel has better flatness. Only diamond resin grinding discs can be used to make beautiful polished floors, and grinding discs are also more economical.
hardness of the ground
The concrete used in the design and construction of the concrete floor is represented by the label, which is what we usually call C20, C25, C30, etc. Under normal circumstances, the higher the label, the better the strength and hardness of the concrete, but due to various Due to the influence of factors, the grade of concrete and the hardness of the ground often do not correspond. The hardness of concrete floors is usually expressed by Mohs hardness. The hardness of the concrete floor is usually between 3-5. On the construction site, we can use some substitutes to replace the Mohs hardness tester to understand the hardness of the ground: the hardness of the nails and keys can be used to draw depressions, damages and scratches. The hardness is less than 5, otherwise Hardness is greater than 5.
Grinder quality and speed
Floor grinders are usually divided into small, medium and large. Generally speaking, the larger the machine, the higher the power and the higher the efficiency; in actual use, the bigger the machine is not the better, although the grinding efficiency is high, the grinding machine that is too large and heavy will often lead to excessive grinding and increase the construction cost. Experienced workers will adjust the machine speed, moving speed, number of grinding discs and machine counterweight according to the characteristics of the machine, so as to reduce the construction cost and improve the construction efficiency.
Types and particle sizes of grinding discs
The commonly used abrasives for floor treatment are PCD abrasive discs, metal-based abrasive discs and resin-based abrasive discs. PCD abrasive discs are used to remove thick coatings on the surface of floors, and metal-based abrasive discs are used for floor surface pretreatment and rough grinding. Resin-based abrasive discs are used for surface roughing, fine grinding, fine grinding and polishing. The particle size of the abrasive disc refers to the size of the diamond particles contained in the abrasive tool. The lower the number, the larger the particle.
The above are the 4 factors that affect our choice of polishing pads. I believe you have already understood it. In the future floor treatment, if you are still wondering what kind of polishing pads to choose, you can refer to this list we listed.
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