In terms of material structure, wet pads usually use water-resistant bonding agents, such as special resins, to ensure that they do not decompose after a long period of immersion; dry pads use more anti-static and easy-to-dissipate materials as the substrate to adapt to the high-temperature environment of high-speed dry polishings.
Wet polishing pads use water-cooled grinding technology to cool down, lubricate and remove grinding debris through water flow, reducing thermal deformation and dust generation; while dry grinding pads do not require the addition of water, and dissipate heat and remove grinding debris through air circulation, which is easier to use, but may generate more dust.
Difference between dry and wet pads
When to use dry polishing pads
When to use wet polishing pads
Dry polishing pads and wet polishing pads, that is, stone grinding with and without water, what is the difference between them, when should dry grinding? When to wet grinding?
Diamond polishing pads
Diamond polishing pads are made of diamond particles combined with resin.
When grinding the stone, the abrasive disc rubs against the surface of the stone and generates high temperature instantly under the speed and pressure of the machine rotation, and this temperature can melt the general resin, and the inferior abrasive discs are easy to be deformed and twisted when grinding.
Stone wet grinding with water can accelerate the heat distribution, the requirements of the composition of the pad is slightly lower, and dry grinding without water, the heat distribution is slow, so the resin used in dry polishing pads must be selected to withstand high temperatures of high-quality resin binding agent.
So simply put, dry polishing pads can be wet grinding, but ordinary wet grinding pads can not be dry grinding for a long time.
Wet polishinig on the stone less damage
The high temperature generated when grinding stone can produce some damage to the structure of the stone crystal. For example, the main component of marble is calcium carbonate, after high temperature burning into calcium oxide, easy to crack, pulverization, loss of luster and a series of problems.
So if the stone grinding is wet grinding with water, can accelerate the dissemination of heat, reduce the damage to the stone.
Wet polishing of the gloss is more beautiful
Stone in the grinding and polishing process, all the high temperature polishing out of the luster and natural temperature polishing out of the luster is not the same.
Natural temperature polishing out of the luster, looks crystal bright crystal bright, and high temperature conditions, due to friction instant heat on the crystalline structure of the ingredients have a certain destructive effect, so dry grinding produced by the luster of dazzle, ablation, stem, not enough translucent phenomenon.
General black stone polishing, easy to whiten, using wet polishing than dry polishing is better. White stone throughout the dry polishing, will find that the color is not translucent, gloss is dry, fuzzy.
Dry grinding heat generated by any stone is harmful, in the light-colored stone is not obvious, but in the black stone is particularly obvious, so the dark stone, recommended wet grinding.
Dry polishing produces pollution difficult to deal with
Dry grinding dust, most of the dust flying in the air, a small amount of dust will be dissolved or absorbed into the holes of the stone with the polishing and grinding to go, which is extremely fine dust, into the interior of the stone, the stone will be contaminated over time.
Stone when dry polishing?
Choose to dry grind there are three cases:
Have not done protection of the stone
Done sealing glaze, mirror, or the surface of the serious aging of the stone in the coating protective agent before the need to open the surface of the stone, the specific method is through the grinding of the surface of the crystallization, sealing glaze layer, or aging layer grinding off, in order to facilitate the absorption of protective agent.
Stone coating protective agent, in order to achieve good results, the requirements in the stone clean and dry, without having done the protection of the stone is easy to absorb water, if the use of wet grinding way to open the surface of the stone, the stone will absorb water to extend the construction period.
Therefore, there is no protection of the stone, before tinting protection, you can open the surface by dry grinding, brushing protective agent.
Wet polishing and after dry polishing
After grinding to 1000 mesh using wet grinding, the stone can be less water or even no water to semi-dry grinding or completely dry grinding, the actual application will find that this is to help the stone out of the light is very practical skills.
The reason is that the low section of the wet grinding period, the stone has absorbed water, the ground is wet, so you can dry grind after 1000 mesh, and through the heat of dry grinding, but also accelerate the evaporation of water, in advance of the stone is dry, for the back of the crystallization of the glaze operation to save waiting time.
Suitable for polishing stone countertops,corners
Some do not have wet grinding conditions of the region, you imagine, brand new furniture, and your hand throwing machine, the water slurry dumped wherever …..
For example, wall edges, corners of the machine can not reach the area, small surface imperfections, repair countertops, you can use the dry grinding method. Dry sanding will be more convenient.
How to properly use a wet polishing pads
Apply proper pressure
In the use of wet polishing pads, it is important to apply the appropriate pressure, too much pressure will lead to increased wear and tear of the pads and breakage, how small the pressure will reduce the efficiency of the work, the operation should be maintained at an even pressure, so that the pads and the processed surface uniform contact.
Control the rotating speed
The rotational speed of the wet abrasive film has an effect on the sanding effect, too high rotational speed will lead to overheating of the abrasive film and abrasive off, too low rotational speed will reduce the sanding efficiency. According to the specification of the diaphragm and the nature of the material, the appropriate rotational speed should be selected.
Maintain the correct angle of use
When using water abrasive discs, the proper angle of use should be maintained, usually between 15-30 degrees, which can ensure that the abrasive discs and the processed surfaces are evenly contacted, avoiding excessive localized abrasion and rupture of abrasive discs.
Adequate water cooling
When using wet abrasive discs, sufficient water cooling can effectively reduce the temperature of the surface of the disc to prevent the abrasive from falling off and the bond from failing. Ensure that the supply of cooling is sufficient to avoid damage to the abrasive discs due to insufficient cooling, and adjust the flow rate of cooling water appropriately according to the actual situation during the grinding process.
Keep the working area clean
In the use of wet abrasive discs, should keep the working area clean, dust and impurities generated during the grinding process will affect the grinding effect and life of the abrasive discs. The working area should be cleaned in time.
Wear protective eqipment
The grinding process generates a lot of dust, which may affect the operator’s health. Operators should wear protective equipment such as protective glasses, masks and gloves to ensure their own safety.
Correct use can improve the life and effectiveness of the abrasive pads. By choosing and is the wet abrasive pads, appropriate pressure, control the speed, maintain the angle of use, adequate water cooling, keep the operating environment clean, you can give greater play to the performance of the water abrasive pads, improve work efficiency and reduce production costs.
