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The causes and solutions for various quality problems of quartz stone plates

Artificial quartz stone is an artificial stone synthesized by using quartz sand as the main filler and resin. The content of quartz sand is more than 90%. Many transparent particles can be seen from the plate, that is quartz, artificial quartz stone countertop inheritance. Some of the characteristics of quartz, such as the highest hardness of up to Mohs hardness of 7 grades, high temperature resistance of 300 ° temperature will not hurt it, beautiful color and so on. The disadvantage is that it is not easy to process, the fracture cannot be repaired, and the basic surface can only be made flat. As the quartz stone market continues to mature in China, it is supplemented by numerical control equipment. At present, the problem of difficult modeling and seamless splicing has been basically solved!

The following is a description of the causes and solutions for various quality problems of quartz stone plates.

First, the stoma
Phenomenon: There are a number of round holes with different numbers and different sizes on the surface of the board.
Analysis of the cause: When the sheet is pressed, the vacuum in the press does not reach the requirement of -0.098Mpa, and the air in the material is not discharged. There are several reasons why the vacuum does not meet the requirements:
1. The vacuum pump is not strong enough to pump vacuum to -0.098Mpa.
2. The machine leaks. Air leaks in the pipeline connection, interface and seal of the press.
3. When the vacuum is not reached at -0.098Mpa, the vibration platen is started, mainly the uncompressed return plate.

Solution: 1. Check whether the press leaks: Close the bleed valve, vacuum to -0.098Mpa, close the valve connecting the pipe between the press and the vacuum pump, and observe whether the vacuum gauge pointer is going back. If the pointer goes back, the compressor is leaking and the machine is notified. If the pointer does not move, the press is not leaking, check other possible causes.
2. Check whether the vacuum in the press can reach -0.098Mpa with the McGee vacuum gauge. If it does not reach -0.098Mpa, the compressor leaks or the vacuum pump is not enough. Check whether the press leaks first. If the press does not leak, notify the machine to check the vacuum pump.
3. The plate that is not compacted and needs to be back pressure must be vacuumed to -0.098Mpa and then pressed, otherwise it will easily produce pores.

Second, the sand hole
Phenomenon: There are a variety of holes on the surface of the plate with different sizes and different rules.

Analysis of the reasons: 1. The board is not compacted.
2. The board is fast solidified (cured during the pressing process).

Solution: 1. Uncompressed plates must be back pressure.
2. The color paster masters the amount of blue water and white water, and reduces the amount of white water when the temperature is high.

Third, variegated
Phenomenon: 1. Black produced by friction between material and iron. 2. The variegated color produced by the decolorization of the mirror glass.

Analysis of the reasons: 1. The impeller is leaking iron, or the iron is leaking from the discharge port, causing the material to rub against the iron to produce black.
2. The vibration force of the press is not uniform, causing discoloration of the mirror glass in parts of the plate.
3. The debris in the environment enters the board and causes mottling.

Solution: 1. When producing the board (especially the fine-grain pure white board), carefully check whether the mixer bottom and the stirring pad are leaking iron. If there is leakage, solve it immediately.
2. Use a white mirror glass when producing mirror glass plates (except black).
3. Clean up the hygiene around the production site.

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