What should be done on the surface of high-frequency anti-corrosion spiral steel pipe?
With the non-stop improvement of China's economy, the united states of america vigorously develops the strength industry. Pipeline long-distance oil and fueloline pipelines are an critical manner of strength security. In the anti-corrosion creation manner of oil (fueloline) pipelines, the floor remedy of anti-corrosion spiral metal pipes determines the carrier existence of pipelines. One of the important thing elements is the basis that the anti-corrosion layer and the metal pipe may be firmly combined. According to the studies institute's verification, the existence of the anti-corrosion layer relies upon at the coating type, coating great and creation environment. The floor remedy of the anti-corrosion spiral metal pipe influences the existence of the anti-corrosion layer via way of means of approximately 50%. Therefore, it must be strictly according with the anti-corrosion layer. Standardize the necessities at the floor of metal pipes, constantly discover and summarize, and constantly enhance the floor remedy strategies of metal pipes. What must be performed at the floor of high-frequency anti-corrosion spiral metal pipe?
1, cleansing Use solvent and emulsion to smooth the floor of metal to take away oil, grease, dust, lubricant and comparable natural matter, however it can't take away rust, scale, flux, etc. at the floor of metal pipe, so it's far best used as an auxiliary manner in anti-corrosion manufacturing of metal pipe.
2, device rust elimination The floor of the metal pipe is in particular polished via way of means of the usage of a cord brush or the want to take away loosened or lifted scale, rust, welding slag, and the like. The rust elimination of the hand device can attain the Sa2 level, and the rust elimination of the strength device can attain the Sa3 level. If the floor of the metal fabric is adhered to the iron oxide scale, the rust elimination impact of the device isn't always ideal, and the anchor intensity required for the anti-corrosion creation can't be achieved.
3, pickling Generally, chemical cleansing and electrolysis are used for pickling remedy. Anticorrosive spiral metal pipe is best handled with chemical pickling, that may take away scale, rust and antique coating, and may now and again be used as re-remedy after sandblasting and rust elimination. Although chemical cleansing can obtain a positive diploma of cleanliness and roughness, its anchor sample is shallow and it is simple to pollute the environment.