What are the factors that affect the choice of polishing pad disc?

The selection and use of grinding pieces are regular: the ground leveling and rough grinding use diamond grinding pieces or concrete thick grinding pieces; Fine sanding pieces can be handled well without coarse sanding pieces; Increasing the weight of the grinding machine or increasing the speed can improve the rate; Try not to skip the use of grinding disc; Dry grinding saves more consumables than water grinding, but water grinding treatment will make the ground more uniform and delicate; It is better to wash the ground, dry it and use a thin grinding piece for high-speed dry polishing. The use of sponge polishing can increase the brightness of the floor.

Today, the small edition of Qingdao Kaier Xiang Abrasive Co.,Ltd. water grinding plate affects the selection factors of the grinding plate, simple arrangement and share with you.

1, the flatness of the ground

Manual smoothing of the screed ground or loose, badly damaged old ground, need to screed or cut loose surface layer, need to use a high-power grinder, choose concrete diamond grinding pieces such as strong grinding force, suitable for screed.

Cement self-leveling ground or polishing machine mechanical leveling ground flatness is better, only diamond resin grinding sheet can make a beautiful polished ground, grinding sheet is also more saving.

2, the hardness of the ground

The concrete used in the design and construction of concrete ground is expressed by the label, that is, we usually talk about C20, C25, C30, etc., under normal circumstances, the higher the label, the better the strength and hardness of concrete, but due to the influence of various factors, the label of concrete and the hardness of the ground are often not corresponding.

The hardness of concrete floors is usually expressed as Mohs hardness. The hardness of the concrete floor is usually between 3-5, on the site, we can use some substitutes instead of Mohs hardness tester to understand the hardness of the ground: with iron nails, keys can mark the hardness of the dent damage scratch is less than 5, otherwise the hardness is greater than 5.

3, the weight and speed of the grinder

Floor grinding machines are usually divided into small, medium and large. Generally speaking, the larger the machine, the greater the power, the higher the rate; In actual use, it is not the bigger the machine, the better. Although the grinding rate is very high, the large and heavy grinder often leads to excessive grinding and increases the construction cost. Experienced workers will adjust the machine speed, moving speed, number of grinding pieces and machine counterweight according to the machine point, reduce construction costs and improve the construction rate.

4, the type and particle size of the grinding plate

The commonly used abrasives for floor treatment are PCD grinding, metal-based grinding and resin-based grinding, PCD grinding is used to remove the thick coating on the floor surface, metal-based grinding is used for floor surface pretreatment and rough grinding, and resin-based grinding is used for surface rough grinding, fine grinding, fine grinding and polishing.

Particle size refers to the size of the diamond particles contained in the abrasive tool, and the lower the number, the larger the particle size.

Metal grinding plate is usually divided into 30#, 60#, 100#, 120# and other numbers, which particle size should be determined according to the ground situation, such as the ground flatness is not good or the surface is relatively loose, it may be necessary to use 30# metal grinding plate to remove the loose surface layer and level the ground. The ground that needs to be frosted and ground stone fruit usually needs to use 50# or 100# metal grinding pieces; Resin grinding sheet is widely used, particle size 30#-3000#, different particle size with different colors of sticky cloth distinguish, used for ground rough grinding, fine grinding, fine grinding and polishing treatment, resin grinding sheet has a hard grinding sheet and soft grinding sheet difference, hard grinding sheet find flat fruit better, more suitable for medium and large floor grinding machine, soft grinding sheet polishing fruit better, Suitable for all types of floor grinding machines.