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Knowledge | Six Common Problems And Solutions For Quartz Stone Plates
Jul 09, 2018

Knowledge | Six common problems and solutions for quartz stone plates

    Artificial quartz stone is an artificial stone which is die-casted with quartz sand as the main filler. The hardness of the plate can reach up to 7 grades of Mohs hardness, 300° of high temperature resistance and beautiful color. The disadvantage is that it is not easy to process, the fracture can not be repaired, and basically only a flat countertop can be made. As the quartz stone market continues to mature in China, it is supplemented by CNC 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.



    1. Porosity: There are a number of round holes with different sizes and different sizes on the surface of the plate. 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. The vacuum does not meet the requirements for the following reasons: 1. The vacuum pump is not strong enough to pump vacuum to -0.098Mpa. 2. The compressor 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 uncompacted return plate. Solution: 1. Check if 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.



    2, the variegated phenomenon: 1. The black produced by the friction between the material and the 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 the sanitation around the production site.



    3, the phenomenon of powder group: on the board surface, there are different sizes, only the powder has no particles. Reason analysis: 1. The stirring paddle can not be stirred, and there is no mixing on the side of the mixer. 2. The material on the mixer wall is dropped into the material. 3. Stirring is uneven. Remedy: 1. The mixing paddle is responsible for the production and maintenance of the specified machine. When the paddle is not mixed, the machine will be notified to replace it. 2. The material on the mixer wall is shoveled into the mixer after adding the resin, or shovel from the mixer after the material is discharged. 3. The mixer hand is operated strictly in accordance with the process requirements.



    4, the phenomenon of uneven particles: uneven distribution of large particles on the surface of the board, local dense, local evacuation. Analysis of the causes: 1. Insufficient stirring time leads to uneven mixing. 2. The granules and powder are added to the color paste without even stirring. The powder and the color paste form a mass. If the stirring time is insufficient, the particle distribution is uneven. Solution: 1. Operate in strict accordance with the process requirements. 2. The big dough must be smashed and then clothed. 3. The granules and powder are mixed well in the raw material workshop.



    5. Impurity phenomenon: The raw materials required for this model are not available on the board surface. Reason analysis: 1. Bring in the raw materials: Bring in the raw materials, bring in the weighing process, the bag is not cleaned. 2. Brought in the production process: Bring in during the weighing process of the color paste, bring in the impurities during the mixing process (import impurities when the material is poured, impurities are not cleaned around the mixer), and the environment is brought in (impurities floating in the air), Brought in the fabric process (mainly gloves). Solution: 1. The impurities in the raw materials must be selected, the weighing place should be cleaned up, and the loaded bags must be cleaned (if necessary). 2. Clean the sanitation on the mixing platform and pay attention to whether the gloves are clean. 3. Clean the mixer and its surroundings before production.



Sixth, honeycomb phenomenon: the surface of the plate is not thick enough to leave the rough surface when the blank plate is still left. Analysis of the reasons: 1. The thickness of the blank board is not enough. 2. The deformation of the sheet causes the local part to be not thickened. 3. The amount of grinding is insufficient when the thickness is set. Solution: 1. Adding material to increase the thickness of the blank board 2. Control the deformation of the sheet. 3. The bottom plate is kept at 18-18.5mm and the large plate is kept at 18.5-19mm.