Flame spraying is one of the common spraying processes used by thermal spraying manufacturers. Generally, flame spraying can be used for metallic and non-metallic substrates. Flame spraying is generally not limited by the shape and size of the substrate, and the coating materials are also very wide. Metal, alloy, ceramic and composite materials can be used as coating materials to make the substrate surface have the functions of corrosion resistance, wear resistance, high temperature resistance and heat insulation. features. Thermal spraying manufacturers generally need to implement the following safety protection measures when using flame spraying: 1. Before installing the pressure reducer on the oxygen cylinder, open the oxygen valve slightly and blow off the dirt to prevent dust and garbage from entering the pressure reducer and causing accidents. 2. It is forbidden to put oxygen cylinders, acetylene cylinders and other combustible gas cylinders together; All inflammables, greases and articles with oil stains cannot be transported with oxygen cylinders in the same vehicle. 3. When transporting oxygen cylinders and acetylene cylinders, install protective caps at the bottle mouth. When using, please place it in a proper and reliable place so that the protective cap of the bottle mouth can be removed. When pulling the bottle cap, it can only be unscrewed by hand or wrench. It is forbidden to knock with a metal hammer to prevent sparks and accidents. 4. Screw the nut of the oxygen pressure reducing gauge at least 6 to 8 turns on the oxygen bottle mouth. Tighten the threaded joint and loosen the adjusting screw of the pressure gauge. 5. After the oxygen cylinder and pressure reducer are installed, slowly open the oxygen valve, check whether the connection between the pressure reducer and the oxygen cylinder is leaking, and whether the indicator is flexible. When opening the oxygen valve, do not face the pressure instrument, and stand at the side or behind the pressure reducer. Do not use fireworks or open flames when checking for air leakage. You can use soapy water to check whether there is leakage before use. 6. Do not touch grease at the oxygen cylinder mouth, or use a wrench coated with grease to tighten the oxygen cylinder valve and pressure reducing connecting screw. It is also not allowed to wear oily gloves to avoid combustion and explosion accidents. 7. Oxygen cylinder, acetylene cylinder and pressure reducer shall be properly placed before and after use to avoid impact and vibration. 8. When using acetylene cylinders and oxygen cylinders, they should be placed vertically and fixed with brackets to prevent falling. 9. Keep the distance between oxygen cylinder and acetylene cylinder, flammable and explosive articles or other open flames at least 8-10 meters. 10. The oxygen in the oxygen bottle is not allowed to be used up completely, and at least 1~2 kg/cm2 of residual pressure shall be left. 11. If the bottle valve and pressure reducer are frozen in winter, they can be thawed with hot water, steam or infrared light bulb. It is forbidden to use open fire for heating. 12. It is forbidden to use iron tools to strike all parts of the cylinder, nor to screw the adjusting screw of the pressure reducing gauge, to prevent accidents caused by high temperature caused by local friction due to the high speed of the air flow. 13. When operating in the open air in summer, oxygen cylinders and acetylene cylinders should be protected from direct exposure to the hot sun, so as not to cause gas expansion and explosion. They must be placed in a cool shed or covered with wet cloth.