金融界2025年5月24日消息，国家知识产权局信息显示，奥钢联钢铁公司申请一项名为“用于将由电工钢带或电工钢片制成的钣金件叠装成带有至少一个冷却通道的至少一个叠片组的方法”的专利，公开号CN120035926A，申请日期为2023年11月。
专利摘要显示，示出一种用于将由电工钢带(3)或电工钢片制成的钣金件(4)叠装成带有至少一个冷却通道(2a)的至少一个叠片组(2)的方法。为了得到无泄漏的冷却通道(2a)而提出：对预粘接的所述叠片组(2)的冷却通道(2a)进行密封性测试(11)并且在检测到泄漏的情况下，在彼此叠置的钣金件(4)的轴向方向(A)上对彼此叠置的钣金件(4)的粘合剂(8)施加第二压力(P2)，以便由此产生所需的密封性。
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