Welding is a way to use heat and some kind of bonding material to put together two or more pieces of metal. There are several kinds of welding, and they each have their best settings and pros and cons. But there is one thing that they all have in common, and that's spatter.
When you look at someone doing some welding, you see a huge spray of sparks flying up from where they are working. Those sparks are caused by the heat or electricity used to weld when it interacts with the flux. But, the stuff that gets thrown up from the workpiece isn't just sparks. It also contains bits of material, slag, and flux called spatter. That spatter can get all over the workpiece, welding table, and in several other places. The spatter can ruin a workpiece and it can be very difficult to get off of everything. There are ways to handle the spatter and try to control it: anti-spatter coating.
These coatings are a way to keep spatter off the material being worked on as well as the work surface. The coating can be put on the material in several ways. For example, you could use gels and sprays. Te coatings can be water-based or solvent-based, and generally contain some kind of silicone. There are also ceramic-based coatings, but those are used for the nozzles of the welding machines, and in most cases, the nozzle has to be dipped into the coating so that it gets covered.
The coatings act as a barrier between the spatter and the material. It is like using a cooking spray on a pan. It acts as a barrier between your food and the pan, and you can easily clean the food off the pan—even really sticky food. The anti-spatter coatings are sprayed or rubbed onto the workpiece as well as the working surface. When a spatter happens, the welder can just wipe it off and easily clean it. It is slightly easier to wipe spatter off using a water-based coating, but a water-based coating can cause rust on the workpiece. A solvent-based coating won't cause rust, but it will be harder to clean up and it might cause some discoloration.
Welding can be messy, anti-spatter coatings make it a little less so and easier to clean up after. For more insight into anti-spatter coating, contact various companies like Safe n Clean.