What kinds of mandrels are used for bending?

In the process of bending pipe processing, the service life of its anti-corrosion coating mainly depends on the type of coating, the coating quality of the product surface and the construction conditions. The surface treatment of elbow processing has an impact on the service life of the product anti-corrosion coating about 50%. Therefore, it is necessary to treat the surface of the elbow strictly according to the standard of the anti-corrosion coating of the elbow.
Cleaning process of bending pipe
In the process of cleaning elbow, it is necessary to effectively use its emulsion and solvent to effectively clean the surface of its steel, which can effectively remove the organic matters of grease, oil and smooth agent to a certain extent, but this method can not remove the rust, oxide scale, welding flux and so on.
In the process of operation, it is necessary to effectively polish the surface of the product with wire brush, which can remove the cocked oxide skin, rust, welding slag, etc. The rust removal by hand can reach SA2 level.
If the elbow is effectively treated by chemical and electrolytic acid pickling, only chemical acid pickling will be used for the anti-corrosion of elbow, which can effectively remove oxide scale, rust and old coating to a certain extent.
The effective use of its chemical cleaning elbow can make the appearance of the knot cleanliness and coarseness to a certain extent, but the shallow anchor pattern will effectively form its pollution on the situation. The spray rust removal of the product is driven by a high-power motor to rotate the jet blade at a high speed.
Elbow will effectively use its wire section, steel shot, steel sand and other abrasives, in the effect of centrifugal force on the surface of the elbow pipe spray treatment, in the process of processing can not only remove rust, oxide and dirt.