In order to increase the plasticity of roller transformer steel after high-temperature annealing at the Leningrad Steel Rapatos and Elektrostal plants, the strip was passed through a long oven at a temperature of 800-900 ° C at a speed of 3-10 mmm. The speed of the strip is determined by the design of the furnace, including the length of the heating zone, and the annealing temperature.
The deformation of the heat -treated cold -rolled transformer steel worsens its magnetic properties. The experiments conducted at the Novosibirsk Metallurgical Plant established that the editing of the metal significantly reduces magnetic induction and increases specific losses, which is confirmed by the following data. E. Gunter 41 indicates that after annealing, the watt losses of the subjects of the samples of 0.07-0.1 VTCG are higher than the samples that were not corrected.
Metal products are very vast in our life and always help to solve a lot of construction and repair issues. For example, having manufactured metal frames on which canopies for summer cafes, tent tents and the like are strong and reliable structures.
IN. IN. Druzhinin, who studied the anisotropy of the magnetic properties of cold -rolled transformer steel on samples that have riveted from cutting on scissors, and on the samples subjected to annealing, notes the significant influence of the stick on the properties of the steel. Work experience confirmed that from cutting a sheet or samples on scissors, the magnetic properties of steel are worsening. As the knives are blown up on the scissors for cutting samples, the magnetic properties of steel worsened.
After editing sheets, unwinding the roll strip and other operations associated with mechanical influences, it is recommended to conduct additional annealing transformer steel to relieve stresses. The experience of a number of factories shows that the annealing of the metal at 700-800 ° C after deformation completely restores the magnetic properties that steel had after high-temperature annealing, and in some cases ensures their significant improvement.
A. AND. Belyakov showed that magnetic properties (medium) depending on the conditions of cutting strips for testing are characterized by data.