There are two kinds of quartz stone on the kitchen counter surface, one is die-casting board and the other is casting board.
Die-casting board, as its name suggests, is produced after a series of procedures such as high temperature, high pressure, and high vibration. Because of the manufacturing process, its hardness and specific gravity are relatively high. Impermeability, crack resistance, heat resistance, and scratch resistance are very good.
The production process of the cast plate is improved from the original artificial stone production process, and the raw material is directly poured into the mold by vacuuming to form a vacuum. Without high temperature, high pressure, high vibration, its density and hardness are relatively low. Impermeability, crack resistance, heat resistance, and scratch resistance are relatively poor.
The difference between quartz stone casting and die casting:
1. Hardness, the hardness of the cast plate is lower than 4, and the hardness of the die-cast plate is equal to or higher than 5.
2, specific gravity (also known as relative density, the density of the substance and the ratio of the standard atmospheric pressure, pure H2O density (999.972 kg / m3) at 3.98 ° C), the specific gravity of the cast plate is less than 2.
3, environmental performance, cast plate is naturally cured under normal temperature conditions, without any treatment, the chemical residues of the plate constitute a hazard to the human body. The die-casting board is cured by OT curing and high-temperature curing. The chemical components left in the sheet are all treated with high temperature, which is an absolutely environmentally friendly surface material.
4. Appearance, the particles of the cast plate are larger, and the particle distribution is not uniform, and the back surface is obviously less than the front side. The particles of the die cast plate are uniform and evenly distributed.
Consumers are not experts, so you should learn a few simple identification methods when purchasing quartz stone:
1. Soak with hydrochloric acid or the like (test material composition)
In order to maximize profits, some manufacturers will do so in the quartz stone countertops with calcium carbonate. Calcium carbonate easily reacts with acid. If such a countertop is purchased, the countertop is easily deformed during later use. Therefore, when purchasing, you can take a sample and put it in dilute hydrochloric acid or other acidic liquid to soak. If the product contains calcium carbonate, it will react with the acid.
2. Paste with oily marker (test for anti-seepage and anti-fouling)
The high-quality quartz stone plate is dense and uniform, so the water absorption rate is low and the permeability resistance is strong; while the internal structure of the imitation quartz stone is loose and porous, and the penetration resistance is weak. When you purchase, you can use oily marker to write on the quartz stone countertop. The high-quality quartz stone can be wiped off with a wet rag. If it is left for a long time, it can be wiped off with detergent powder and decontamination powder. The inferior quartz stone can't be wiped off. Or there are imprints.
3. Check the wear resistance with a knife stroke (test scratch resistance)
The main component of the quartz stone countertop is silica, which has a high hardness and a quartz content of about 93%. Therefore, the possibility of occurrence of breakage is very small and relatively wear-resistant. The fake quartz stone resin has a high content and a low surface hardness, which is easy to scratch. When purchasing, you can use a knife to try to draw a stroke on the table.
4. Check the heat resistance with fire (test material ratio)
Inferior quartz stone resin content is too high, and heat resistance will also be reduced. Therefore, you can use this to burn a sample with a lighter, cigarette butt, etc., and then see if it leaves a trace.