Today, Landscape Stone play a vital role in urban construction, but since they are often placed outdoors, some damage is inevitable.
1. Welding arc traces
When welders arc across the metal surface of landscaping stones, they create rough surface defects. The protective film is damaged, leaving a potential source of corrosion. The welder should strike the arc on or to the side of the weld. The pilot arc trace then melts into the weld.
2. Rust spots
Before or during the production of Landscape Stone, rust is sometimes seen on Landscape Stone products or equipment, indicating serious surface contamination. Rust must be removed before equipment is put into service, and thoroughly cleaned surfaces should be tested for iron and/or water.
3.Welding defects
Welding defects such as undercuts, incomplete welding, dense pores, and cracks not only reduce the firmness of the joint, but also become the source of crevice corrosion. When cleaning operations are performed to improve this result, solid particles are also carried away. These defects can be repaired by re-welding or grinding and then re-welding.
4.Scratches
To prevent the build-up of process lubricants or products and/or dirt, scratches and other rough surfaces must be mechanically cleaned.
5. Oils and greases
Organic matter such as oil, grease and even fingerprints can become sources of localized corrosion. Since these substances act as barriers, they can affect the effectiveness of chemical and electrochemical cleaning and must be thoroughly cleaned.
6. Paint, Chalk and Marker Printing
The effects of these contaminants are similar to those of oil and grease. It is recommended to clean with a clean brush and water or alkaline detergent, or rinse with high-pressure water or steam.
7. Thermal tempering color and other oxide layers
Thermal temper color is caused by staying in high temperature or high altitude for a long time. When any kind of oxide layer occurs, the chromium content of the metal surface is reduced, resulting in reduced corrosion resistance in these areas. In this case, the
stone carving must not only remove the oxidation layer such as thermal tempering color, but also clean the chromium-poor metal layer underneath it.
8.Dust
The production of
stone sculpture is often carried out in dusty places, and there is a lot of dust in the air that constantly falls on the surface of the equipment. Can be removed with water or alkaline solution. However, organic bentonite clay with sticky dirt will need to be cleaned with high-pressure water or steam.
9. Residual adhesive
When the tape and protective paper are removed, a portion of the adhesive always remains on the surface of the Landscape Stone. If the adhesive is not hard, it can be removed with an organic solvent. However, when the stone sculpture is exposed to light or air, the adhesive hardens, forming a source of crevice corrosion. Mechanical cleaning with fine abrasives is then required.
