During the annealing process of iron cores, several common quality issues may arise, affecting the performance and reliability of the iron cores. Here are some common quality issues during iron core annealing:

Excessive Softening: If the iron core undergoes excessive softening during annealing, it may result in a decrease in magnetic performance, rendering it inadequate for transformer or motor requirements.

Carburization: Carburization refers to the infiltration of carbon elements into the iron core during annealing. This can lead to uneven hardness in the iron core, causing performance instability.

Grain Growth: During annealing, the grains of the iron core may grow, potentially impacting its magnetic performance and hysteresis loss.

Internal Stress: Improper annealing can create non-uniform internal stress within the iron core, leading to warping or deformation.

Oxidation: Inadequate annealing conditions can result in surface oxidation of the iron core, reducing its electrical performance.

Cracks and Defects: Inappropriate annealing processes may lead to surface or internal cracks and defects in the iron core, potentially reducing its strength and reliability.

To avoid these quality issues, it is essential to strictly adhere to the temperature, time, and atmosphere requirements recommended by the manufacturer during the iron core annealing process. Regular quality control and inspections are also critical steps in ensuring the quality of iron core annealing to meet performance and reliability requirements.

LuShan, est. 1975,  is a Chinese professional manufacturer specializing in power transformers and reactors for 48 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

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