The utility model relates to a low-frequency sending coil consisting of a plastic noumenon with slab structure and a conducting material wound around the plastic noumenon.
本实用新型涉及一种低频发送线圈，包括塑料本体和缠绕塑料本体的导电材料，所述塑料本体为平板结构。
The slab surface cracks will degenerate the quality of hot-rolled coil, even worse affect the production schedule badly and disrupt production Rhythm.
而铸坯的表面裂纹则会直接恶化热轧板卷的质量，更有甚者还会影响生产调度，打乱生产节奏。
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