整体锌筒的外观和内在质量不仅影响到电池厂的流水线生产操作,更重要的是影响干电池的质量提高。现在除了尚有一部分地区由于设备条件与技术水平的限止仍有一些焊接锌筒外,大部分地区象上海、湖南、广州、北京、哈尔滨等地均采用冷挤一次成形的整体锌筒做干电池外 The appearance and inherent quality of the overall zinc cylinder not only affect the assembly line production operations of the battery plant, more importantly, affect the quality of the dry cell. Now there are still some areas in addition to the limitations of equipment and technology there are still some welded zinc tube, the majority of areas like Shanghai, Hunan, Guangzhou, Beijing, Harbin and other places are using a cold extrusion forming a whole zinc cylinder outside the battery