Methods and maintenance skills of stone renovation

Many kinds of natural stones have become the first choice for decorating halls, floors and walls because of their beautiful patterns and hard physical characteristics. Due to long-term use, the surface of natural stone will be weathered, damaged, worn and scratched, making it lose its luster. In order to make the stone surface beautiful again, we usually use the method of stone renovation to deal with it, and adopt more scientific and correct maintenance methods to maintain the stone surface, thus continuing the brightness and beauty of the stone surface.

1. Renovation of marble floor

2. Granite Renovation Granite, commonly known as granite, is mainly composed of Yingshi (35%), feldspar (45%) and mica, and its Mohs hardness is about 6.5. Stone is hard in texture, and it is naturally weathered and worn in the process of long-term use, which shows mica falling off. At this point, there are a few pits on the stone surface. When there are more and more pits, the brightness of granite surface decreases, losing its original luster, and it feels concave and convex by hand. The luster of stone can be restored by renovation. Because of the hard texture of granite, when the surface of granite is damaged, it is difficult to achieve the ideal effect simply by using chemical curing agent and abrasive.

After years of exploration and research, it is considered that the effect of physical grinding is better than that of chemical products in granite reconstruction project. So now we have to renovate it by physical polishing. To renovate by physical grinding, two conditions must be met: first, the weight of the refurbished machine; Second, the speed of the refurbished machine. In other words, the stone grinding process requires weight and low speed; In the polishing process, low weight and high rotation speed are needed. At present, the ordinary weighting machine used in the market cannot meet the two necessary conditions of physical polishing for granite renovation because of its light weight and low rotation speed, so the effect of granite renovation is not ideal, which is far from people's expectation of stone renovation effect. According to the above situation, our company finally recommends using ASL Mei Jie T2 professional stone refurbished machine for granite renovation. Because the weight of the refurbished machine is 165KG, the rotating speed is 0-900 rpm, the frequency conversion is adjustable, and the operation is convenient, which meets the requirements of granite renovation. The brightness of the renovated granite is very good, and the ground brightness recorded by photometer is above 70-80 degrees, even reaching 90 degrees.

Can be close to the brightness of the original stone. Luminance recorded by photometer is only one of our detection methods. According to the specific situation of the site, observe the brightness of the stone with your eyes, and finally judge the transformation results. Equipment, accessories and consumables required for granite renovation: ASL Mei Jie professional stone renovation machine T2, 3-inch metal grinding sheet, renovation sheet, 9-inch red polishing pad, water absorber, signboard, watering can, photometer, glass scraper, wiper and bucket. Working procedures and construction methods of stone renovation: ① Set up a signboard at the work site. Stick the plastic transparent film on the bottom of the wall around the construction site to prevent mud and dirt from splashing on the wall. Add fresh water to the water tank of the stone refurbished machine, turn on the power supply, prepare various types of metal grinding plates and refurbished plates, adjust the level of the equipment and the ground, and make good preparations. If there is old wax on the ground, wax it first. (2) Use 6 pieces of 50# metal grinding discs and install them on two grinding heads respectively, add two pieces of * * * 50kg counterweight iron, adjust the speed of ASL Mei Jie refurbished machine to about 500rpm, drain water, and start the motor for grinding. Every time the grinding area is about 1 m2, push and pull it repeatedly for 3~5 times to grind the cut part of the stone until it is smooth. When grinding, the amount of water is moderate, and dry grinding is prohibited. Suck up the ground with a water suction machine. ③ Replace 150# metal grinding plate and 300# metal grinding plate, grind them in turn, and level the incision.

Eliminate rough wear marks. Grinding, scraping and drying the floor repeatedly. ④ Using 200#, 400# and 800#, the machine speed is 500 rpm, and the marble surface continues to be refurbished and polished. ⑤ Use 1500# and 3000# polishing sheets to polish the granite surface. At this time, the two counterweight irons were removed from the machine, and the rotation speed was increased from 500 rpm to 650 rpm. Finally, the stone surface was cleaned and dried, showing beautiful colors. After renovation, some dark stones will become lighter in color and appear chromatic aberration. The reason is that special coloring treatment was done before leaving the factory to reduce the color difference. Once the stone is renovated, we grind off the special colorant before leaving the factory and restore the original color of the stone, so the dark stone will fade, become lighter and appear color difference. According to the characteristics of each different dark stone, our company can reduce the color difference and basically restore the original color of the stone.

Once the stone is renovated, we grind off the special colorant before leaving the factory and restore the original color of the stone, so the dark stone will fade, become lighter and appear color difference. According to the characteristics of each different dark stone, our company can reduce the color difference and basically restore the original color of the stone.