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What are the types of Stone Garden Decor surface damage

June 26, 2023

Now stone carving is more and more widely used in our cities, especially Stone Garden Decor, but the Stone Garden Decor that has been outdoors for a long time has some damage on its surface. How should we remove these damages? Stone Garden Decor manufacturers will talk about the common damage types of Stone Garden Decor in detail for everyone, let's find out together.

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1. Rust spots: rust is sometimes seen on stainless steel products or equipment before or during the production process, which indicates that the surface is seriously polluted. It must be removed before the equipment is put into use, and the thoroughly cleaned surface should be inspected by iron test or water test.
2. Flux: The welding processes using flux include manual welding, flux-cored arc welding and submerged arc welding. These welding processes will leave fine flux particles on the surface, which cannot be removed by ordinary cleaning methods. These particles will be a corrosion source for crevice corrosion, and mechanical cleaning must be used to remove these residual fluxes.
3. Welding arc strike marks: When welders strike arcs on the metal surface, it will cause rough surface defects. The protective film is damaged, leaving a potential source of corrosion. The welder should start the arc on the already welded bead or on the side of the welded joint. The pilot arc trace is then melted into the weld.
4. Welding defects: Welding defects such as: undercut, incomplete penetration, dense pores and cracks not only reduce the firmness of the joint, but also become a corrosion source of crevice corrosion. They also entrain solid particles during cleaning operations to improve this result. These defects can be repaired by re-welding or re-welding after grinding.
5. Thermal tempering color and other oxide layers: Thermal tempering color is caused by staying at a high temperature or at a relatively high temperature for a long time. When any of these oxide layers are present, the chromium content of the metal surface is reduced, resulting in reduced corrosion resistance in these areas. In this case, not only should the thermal temper and other oxide layers be removed, but also the chromium-poor metal layer beneath them should be cleaned.
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