1）開齒：將型材上要插入熱條的槽口部分開齒打毛，以增加隔熱條與型材槽口復合時的咬合效果，這道工序是高復合型材抗剪切力的關鍵，通過使用硬質打磨輪，在專用設備上將槽口部分開齒打毛。

　　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）穿條：將隔熱條穿入需要復合的內外兩根鋁型材的相應槽口內，利用穿條設備，確保隔熱條準確地插入兩根鋁型材的已開齒的槽口內，為下一工序進行滾壓，提供準確位置，并大大提高生產率。斷橋鋁穿條設備，斷橋鋁滾壓機，斷橋鋁開齒機

　　(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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