A full-frequency instant core-loss equation built from the induction physical model of magnetic materials, where the iron loss, eddy loss, and hysteresis loss no longer have an integral term, and this new equation pro...A full-frequency instant core-loss equation built from the induction physical model of magnetic materials, where the iron loss, eddy loss, and hysteresis loss no longer have an integral term, and this new equation provides high simulation accuracy and performs dynamic core loss analysis on non-sinusoidal or pulse magnetic fields. The simulation examples use a high-grade electrical steel sheet 65CS400 by Epstein experimental data covering magnetic field 0.1 - 1.8 T and frequency 50 - 5000 Hz, and the average error of the simulated core loss is less than 4%. Since the simulation is converged by magnetic physical parameters, so the physical relevance of the similar laminated materials can be compared with the coefficient results. .展开更多
To promote the solution of chromium in copper and the purity of copper-chromium(Cu-Cr) alloy,vacuum continuous casting(VCC) process was employed to fabricate the Cu-Cr alloy required for electrode material. Cu-0.6Cr(c...To promote the solution of chromium in copper and the purity of copper-chromium(Cu-Cr) alloy,vacuum continuous casting(VCC) process was employed to fabricate the Cu-Cr alloy required for electrode material. Cu-0.6Cr(containing 0.6%(mass fraction) chromium) alloy bar with a diameter of 12 mm was cast with a constant rate of 250 mm/min. The microstructure,mechanical properties,and physical properties were discussed. After solid solution strengthening and aging treatments,Cu-0.6Cr alloy fabricated by VCC process has higher tensile strength(σ≥314 MPa),elongation rate(δ≥34%),conductivity(≥80.5% IACS),and hardness(80 HRB) compared to the as-cast alloy.展开更多
文摘A full-frequency instant core-loss equation built from the induction physical model of magnetic materials, where the iron loss, eddy loss, and hysteresis loss no longer have an integral term, and this new equation provides high simulation accuracy and performs dynamic core loss analysis on non-sinusoidal or pulse magnetic fields. The simulation examples use a high-grade electrical steel sheet 65CS400 by Epstein experimental data covering magnetic field 0.1 - 1.8 T and frequency 50 - 5000 Hz, and the average error of the simulated core loss is less than 4%. Since the simulation is converged by magnetic physical parameters, so the physical relevance of the similar laminated materials can be compared with the coefficient results. .
文摘To promote the solution of chromium in copper and the purity of copper-chromium(Cu-Cr) alloy,vacuum continuous casting(VCC) process was employed to fabricate the Cu-Cr alloy required for electrode material. Cu-0.6Cr(containing 0.6%(mass fraction) chromium) alloy bar with a diameter of 12 mm was cast with a constant rate of 250 mm/min. The microstructure,mechanical properties,and physical properties were discussed. After solid solution strengthening and aging treatments,Cu-0.6Cr alloy fabricated by VCC process has higher tensile strength(σ≥314 MPa),elongation rate(δ≥34%),conductivity(≥80.5% IACS),and hardness(80 HRB) compared to the as-cast alloy.
