304 stainless steel seamless pipes,oxidized skin, pipe surface,treatment methods.
304 stainless steel seamless pipe in long-term use may be damaged by the oxidized skin and thus the so-called oxidized skin effect. At this time, it should be treated accordingly to avoid corrosion damage to the steel pipe.
Here are several methods to remove the oxidized skin on the surface of 304 stainless steel seamless pipe:
- Removed by water bursting pool
Water explosion pool is the use of room temperature circulating water as a cooling medium, into the high-temperature billet, with the ‘water explosion’ way to remove the surface of the billet oxide skin. When the water meets the high-temperature billet will be instantly vaporized, resulting in a large number of high-pressure steam, through the impact of the steam to make the surface of the oxide peeling. This method is less investment, low cost, low maintenance, but also less suitable for steel, only suitable for some austenitic 301, 304 and other stainless steel.
- Treatment with ferric chloride skin cleaner
Iron oxide cleaning machine, you know what it does by its name. It is mainly composed of steel brush rollers, driving device, high pressure water system and cooling water system and clamping device. Two rollers with steel wire are mounted on the roller conveyor seat, and the rollers rotate at high speed along the direction opposite to the running direction of the steel billet, utilizing the steel wire to scour the surface and thus removing the oxidized skin. Iron oxide cleaning machine is applicable to many steel grades, but the cleaning is not thorough.
- Cleaning by shot blasting machine
The shot blasting machine is mainly composed of blasting head, blasting room, blasting conveyor system, steel shot cleaning device, steel shot replenishment device, dustproof system, lubrication system and electrical control system. The high-speed steel shot thrown by the shot blasting machine removes the oxidized skin by hitting the oxidized skin.
The above is the introduction of three treatment methods for removing the oxidized skin on the surface of 304 stainless steel seamless steel pipe.Hope it can do some help .
