The FOURTH step of the manufacturing process of CRGO Transformer Cores is to deburr and stress relief anneal the material by other health annealing finance. This is done as per the mill's specification at 820 ยบ C for a few minutes depending upon the thickness and grade of CRGO material. Since the electrical properties of CRGO cores are very critical, every core is tested on a specially designed test bench. The ampere turnscm (magnetization current) are measured on every core to ensure that they are within the specified limits.
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