Quartz stone sheet forming process

Quartz stone sheet forming process

The synthesis of quartz stone plates is currently mainly controlled by a computer in a vacuum die casting machine. In the process, the curing is mostly at medium temperature. Mix the fillers of different meshes according to the required ratio, mix with the resin that has been added with the medium temperature initiator and color paste, and pump it to the hopper on the upper part of the casting machine for mixing. At the pouring port, use the console to control the moving speed and direction of the pouring port and the cutting speed to pour into the prepared mold. After the pouring is completed, the mold is sent to the bottom of the press, and then compressed by vacuum and high pressure. High temperature treatment, and finally polished to produce quartz stone plates.

1. Selection and mixing of raw materials 1/4 Looking for high-quality quartz minerals and other additives, quartz mineral raw materials of various particle sizes are purified by special purification equipment to remove possible impurities such as wood chips and metal fragments. Then it is transported into the raw material mixing tower, and the minerals and other additives are uniformly mixed step by step. The impurity-free raw materials and uniform mixing are the fundamental guarantee for the defect-free board.

2. The thickness setting ratio and the mixed raw materials enter the super-large forming machine, and the flatness and thickness of the sheet blank are accurately adjusted by the computer-induced thickness setting device, and then directly placed on the belt conveyor after forming. , Only one sheet is formed at a time.

3. The blank material formed by vacuum die-casting is precisely controlled by the computer in the vacuum die-casting machine. The vacuum equipment installed underground exhausts the air in the mineral voids to close to the vacuum, forming the closest accumulation of ore, mineral powder, and other additives. , To achieve a non-porous effect, the working time of each sheet is about 15 minutes. The vacuum die-casting of each super large size plate is used to ensure the material is dense and non-porous. The larger the plate size, the more complicated the process guarantee.

4. The plates from the vacuum die-casting machine are directly sent to the drying room at 90-110°C and cured at medium temperature for 50-120 minutes. During the period of baking in the baking room, the quartz stone plate reaches a certain degree of curing. Ensure the excellent properties of the board.

5. The surface is polished on an automated roller conveyor line, the large plate is moved slowly, through 36 large and thin large special grinding heads, high-speed rotation and front and back uniform motion, supplemented by a large amount of cooling water and different Abrasive, the surface is polished into a particularly glossy mirror effect. Thus the surface treatment is fully revealed. In addition to the above-mentioned medium temperature curing, one sheet at a time forming process, there are two other methods that customers use. Curing at room temperature is consistent with the above process, only adding a certain proportion of room temperature cobalt accelerator (0.4-0.6%) and curing agent methyl ethyl ketone peroxide (0.8-1.2%). After pressing and forming, without going through the above-mentioned 4-step medium temperature baking, at room temperature, after the plate has a certain degree of solidification, enter the oven for baking. 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 the quartz stone, the lower the amount of resin, the better the quality, the closer it is to natural, and the less likely to be deformed.