1）开齿：将型材上要插入热条的槽口部分开齿打毛，以增加隔热条与型材槽口复合时的咬合效果，这道工序是高复合型材抗剪切力的关键，通过使用硬质打磨轮，在专用设备上将槽口部分开齿打毛。

　　1) Teeth opening: The part of the groove on the profile where the hot strip is to be inserted is toothed and roughened to increase the interlocking effect between the insulation strip and the groove of the profile. This process is the key to the high shear resistance of the composite profile. By using a hard grinding wheel and specialized equipment, the toothed part of the groove is roughened.

　　（2）穿条：将隔热条穿入需要复合的内外两根铝型材的相应槽口内，利用穿条设备，确保隔热条准确地插入两根铝型材的已开齿的槽口内，为下一工序进行滚压，提供准确位置，并大大提高生产率。断桥铝穿条设备，断桥铝滚压机，断桥铝开齿机

　　(2) Strip threading: Thread the insulation strip into the corresponding slots of the inner and outer aluminum profiles that need to be composite. Use strip threading equipment to ensure that the insulation strip is accurately inserted into the already toothed slots of the two aluminum profiles, providing accurate positioning for rolling in the next process and greatly improving productivity. Broken bridge aluminum threading equipment, broken bridge aluminum rolling machine, broken bridge aluminum gear opening machine

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