Study on the Effect of Insulation Cover on the Microstructure and Physical Properties of High-speed Wire Coil
When producing high-speed wire coil products,two different cooling methods were used:natural cooling without an insulation cover after air cooling and slow cooling with an insulation cover after air cooling.Combined with comparative analysis of microstructure and physical properties,the microstructure of both methods was F+P,and there was a small amount of Weinstein structure(similar in magnitude and different in grade)at the edges of the samples.There was no significant change in mechanical properties,and the yield plateau of the tensile curve was obvious.Only from the microstructure comparison,the covered insulation cover was slightly better than the uncovered insulation cover.