Due to the decorative effect of Shandong white hemp stone in decoration engineering, it is widely loved by people. The application of white hemp stone is becoming more and more widespread, so people have put forward higher requirements for the decorative effect of stone. The maintenance of white hemp stone is an important part of the production process of building decoration stone. Stone renovation involves renovating white hemp stone that has been contaminated or damaged, such as uneven surface, deep scratches, and deep stains. So how to deal with stains during the renovation process of white hemp stone?
1. Oil stains (oils, cooking oils, cosmetics, etc.)
Oil stains can cause the surface of white hemp stone to darken and lose its luster. It usually requires the use of chemical substances to remove it, such as dripping liquid cleaning agents or household cleaning agents with rinsing function, acetone cleaning agents, etc. onto a soft cloth, or using paste like cleaning agents.
2. Organic pollution (coffee, tea, fruit stains, tobacco, paper, food, urine, leaves, bark, etc.)
The pink or brown marks on the surface of white hemp stone are caused by organic pollution. After removing the stains, these marks will also disappear. The stains on outdoor white hemp stone usually disappear after being exposed to sunlight or washed away by rainwater, while the organic pollution on indoor white hemp stone can be cleaned by using a 12% hydrogen peroxide solution with a few drops of ammonia.
3. Metals (iron, rust, copper, bronze)
The pollution of iron or rust appears orange or brown, and is consistent in shape with the object of the pollution source, such as nails, screws, metal furniture, etc; The pollution color of copper and bronze is green or light brown. The reason for this pollution is due to the rusting of bronze, copper, and brass caused by the placement of white hemp stone in a humid environment. The copper rust generated seeps into the surface of the stone, and a paste like cleaning agent should be used to remove the metal pollution. Due to the difficulty in removing deep-rooted rust, it may cause pollution to the stone.
4. Microbial contamination (algae, mold, lichen, moss, fungi, etc.)
You can use a lower concentration of ammonia solution, rinse or hydrogen peroxide (1/2 cup to 1 gallon of water) to remove such stains. It should be noted that bleach should not be mixed with an aqueous solution of ammonia, as this can produce deadly harmful gases.
5. Paint
You can use paint thinner or a blade to carefully scrape off small pieces of paint, but if the surface of the stone is covered with a thick layer of paint, tools need to be used to peel it off. But the paint peeler may scratch the surface of the white hemp stone, so it is usually re polished; When using a paint peeler, follow the instructions in the user manual and clean it with clean water after scraping off the paint. Use a wooden or plastic scraper to remove uncured or solidified paint. Scratching off rubber and acrylic paint will not leave any marks, while oil-based coatings, flaxseed oil, putty, sealants, etc. can also cause oil stains and leave marks.
6. Weathering
Weathering refers to the phenomenon of a layer of white powder appearing on the surface of white hemp stone. The reason for weathering is that the mineral salts inside the stone rise from the inside to the surface with the circulation of water, and then evaporate to form powder. When the water on the surface evaporates, the powdery substance is left on the surface of the stone. If installing new stone, clean the dust on the surface with a cloth or vacuum cleaner. It should be repeated several times before the stone is completely dry. It is important not to rinse the powder with water, as this will only temporarily disappear the powder.
7. Scratches and small gaps
Dry car plush grinding discs should be used for polishing or the above-mentioned corrosion removal methods should be used to treat slight scratches on the surface of the stone. If there are deep scratches or small gaps, they need to be re polished.