What are the surface treatment methods for cold drawn steel tube?
Apr 12, 2019
Cold drawn steel tube is a round, square, rectangular steel with a hollow section and no joints around the whole steel pipe which is produced by drawing, extrusion and perforation. When the cold drawn steel tube is made, it is made by ingoting a steel ingot or a solid tube blank, and then making it by cold drawing.
The surface treatment of cold drawn steel tube is closely related to their service life. The surface treatment is better than the longer service life, so the surface treatment of cold drawn steel tube is very important. There are many surface treatment methods for cold drawn steel tube. The high-power motor drives the high-speed rotation of the blades to make the steel sand, steel balls, wire segments, minerals and other abrasives under the centrifugal force Spraying and spraying, on the one hand, completely cold-drawn seamless steel pipe to remove rust, oxides and dirt, on the other hand, the cold drawn seamless steel pipe achieves the required uniform roughness under the action of abrasive violent impact and friction.
The surface of the cold drawn steel tube is covered with scale, rust and welding slag. Wire brush and sandpaper can be used to clean and polish the surface. The descaling of manual tools can reach the sa2 standard, and the descaling of electric tools can reach the sa3 standard. If the surface of the cold drawn steel tube is attached with a particularly strong scale or rust, it may be removed by manual or electric tools. It is necessary to find another method.
The grease, dust, lubricant, organic matter, etc. adhering to the surface of the cold drawn steel tube are usually washed with a solvent, an emulsion, or kerosene. Common pickling includes both chemical and electrolytic methods, but the corrosion protection of the pipeline is only chemical pickling. Chemical pickling can achieve a certain degree of cleanliness and roughness on the surface of the steel pipe, facilitating subsequent processing procedures.www.skivingtubelw.com
