The Practice of Large Diameter Spiral Pipe Demagnetization

The current demagnetization of large diameter spiral steel pipe is usually used in the DC demagnetization coil, the demagnetization coil will be added to the magnetic particle inspection machine in the future, but the demagnetization effect does not enable customers to meet the problem is that the DC demagnetization field occurs only reverse half of the magnetic field, How to demagnetize the internal remanence magnetic steel reverse some offset, the external performance of the residual magnetism to stay in the required range, so the role is very unstable. Often in the field can pass, after the transfer, hit, the magnetic field and overrun. The reason is that the internal magnetic domain is not through the "magnetic exercise" in a very unstable situation.

The demagnetization of large diameter spiral steel tube is the national standard 30GS following, HT30D steel tube demagnetization system can be remanufactured steel tube stability to 10GS remnant, in order to avoid the future in the process of remanence and then rebound. Specifications: Dimensions: 400 * 500 * 600mm, operating voltage: 220V, operating current: 5-20A successive adjustable, operating frequency: 0-50Hz successive adjustable, demagnetization coil diameter scale: 100-250 (or customer demand meter).