Winding silicon steel core silicon steel sheet coating problem

2019 - winding silicon steel core silicon steel sheet coating problem 03 - 30 15:05:20 ( 1) Cold rolling without oriented silicon steel belt by the nominal thickness ( 100 times the value of the) A + + code iron loss guarantee value ( The frequency 50 hz, magnetic flux density is 1. 5 t at the time of the iron loss value expand after 100 times) 。 Such as thickness of 50 a470 said to 0. 5 mm, iron loss guaranteed value & le; 4. Seven of the cold rolled silicon steel without orientation. （ 2) Orientation of cold rolled silicon steel belt by the nominal thickness ( 100 times the value of the) Code + G: ordinary material, P: high orientation material + iron loss guarantee value ( The frequency 50 hz, magnetic flux density is 1. 7 t at the time of the iron loss value expand after 100 times) 。 Such as 30 g130 said thickness of 0. 3 mm, iron loss guaranteed value & le; 1. 3 the orientation of cold rolled silicon steel belt. Coating: oriented silicon steel surface insulation coating in organic coating, inorganic coating and inorganic coating three categories. Inorganic coating is the basic composition of phosphate coating and coating of aluminum phosphate colloidal silicon dioxide, magnesia, and boric acid is added. Inorganic coating has good heat resistance and welding performance, but its coining and poor bonding. Half inorganic coating of basic components in phosphate, chromate, latex resin solution, dispersion agent and surfactant, the dispersion promoter and surfactant plays an important role in the quality of the coating. Half inorganic coating has good coining and caking property, but its heat resistance and weldability less than inorganic coating. A thin coating A coating for half an organic coating, it has excellent plate resistance, corrosion resistance, freon resistance and high resistance, especially the welding performance, suitable for medium and small motor, household electrical appliances, motor and small EI transformer core, A1 coating of jfe and T4 coating of wisco. H H coating coating for half an organic coating thickness, good plate resistance, corrosion resistance, freon resistance and high resistance, suitable for medium and small motors. The equivalent of jfe A1 coating and T4 coating of wisco. D D coating for coating inorganic coating, this coating has excellent weldability and heat resistance, suitable for medium and small motors, especially to eliminate stress under the high temperature annealing. C - the equivalent of AISI 4 coating and wisco T3 coating. Unless special instructions, A coating in all the surface of the steel grade design insulation coating. Hysteresis loss is due to the core in the process of repeated magnetization, & other; Internal friction & throughout; The loss caused by it with the nature of the core material ( Permeability, coercive force) Induced current generated by the eddy current loss is due to the core - - Joule heat generated in the eddy current loss caused by using coated with varnish thin silicon steel sheet pile into the iron core can greatly reduce eddy current losses. When the supply voltage must be iron loss is basically constant quantitative, has nothing to do with the size of the load current, nature, so basically metal loss is equal to its no-load loss.