The Manufacture Method And Formula Of Artificial Quartz Stone Slabs

Artificial Quartz Slab Formula

721-3 resin 8%
800 mesh quartz powder 19%
400 mesh quartz powder 11%
80 mesh quartz sand 13%
60 mesh quartz sand 17%
80 mesh glass 8%
10 mesh glass 6%
40 mesh white glass 18%
coupling agent 2% (resin content)

Artificial Quartz Stone Slabs Molding Process

The synthesis of quartz stone is mainly controlled by a computer in a vacuum casting machine. In the process, medium-temperature curing is most common. The filler of different mesh quartz sand is mixed according to the required proportion, and the resin has been mixed with the medium temperature initiator and color paste, and it is pumped to the hopper of the pouring machine, stirring and mixing.

During the pouring, use the console to control the moving speed and direction of the pouring mouth, also the blanking speed to pour into the prepared mold. After the pouring is completed, the mold is sent to the bottom of the press machine, pressed by vacuum at high pressure, then treated at high temperature, and finally polished into the finished product.

Step 1

Raw material selection and mixing 1/4 to find high-quality quartz minerals and other additives, a variety of granular sizes of quartz mineral raw materials, and then transport the minerals and other additives, step by step, into the raw material mixing tower for uniform mixing. Raw materials without impurities and uniform mixing are the fundamental guarantees of a slab without defects.

Raw Material Selection And Mixing - Quartz Stone Production — Raw-Material

Step 2

The fixed thickness molding ratio and the mixed raw materials into the large forming machine. The computer induced thickness equipment to the flatness and thickness of the slab embryo for accurate adjustment, directly places it on the belt conveyor after forming, only one slab each time.

Manufacture Method And Formula Of Artificial Quartz Stone Slabs

Step 3

The vacuum die-casting molding of the embryo in the vacuum die-casting machine by the computer’s precise control of the entire process, installed in the underground vacuum equipment, will bring the air in the mineral gap close to the vacuum. the formation of ore, mineral powder, and other additives between the closest accumulations, to achieve the effect of no holes, and a slab operation time of about 15 minutes. The vacuum die casting of each oversized plate is used to ensure the density and non-porosity of the material, and the larger the plate size, the more complex the process protection.

Step 4

The slab is poured out from the vacuum die casting machine, directly into the 90–110 °C drying floor, medium temperature curing for 50–120 min. For a period of time, the quartz stone plate reaches a certain curing degree. Ensure the excellent properties of the slab.

Step 5

Surface polishing In the automatic roller conveyor line. the large slab is slowly moved, through 36 large special grinding heads, which are thick and fine, with high-speed rotation and uniform movement before and after, Supplemented by a lot of cooling water and different abrasives, the surface is polished into a special glossy mirror effect. Thus, the surface treatment is fully revealed.

In addition to the above molding process of medium temperature curing, one slab at a time, there are two other methods used by manufacturers. Normal temperature curing, consistent with the above process, only to add a certain proportion of normal temperature cobalt accelerator (0.4–0.6%) and curing agent methyl ethyl ketone peroxide (0.8–1.2%). After pressing and forming, do not go through the above 4 steps of medium temperature baking, at room temperature, wait until the slabs have cured, and then put them into the oven to bake.

It should be pointed out that the quality of quartz stone is directly related to the content of resin. The higher the content of quartz in quartz stone, the lower the amount of resin, the better the quality, the closer it is to nature, and the more difficult it is for it to deform.

In The End

Experts pointed out that when the content of resin in quartz stone is greater than 10%, the corresponding technical indicators will decline, and the quartz stone can no longer be called real quartz stone.