讲解洁净系统风管制作要点:

　　Interpretation of the clean air duct system to make the point: 

　　After processing semi-finished products should be into next working procedure after another scrub, duct under bite immediately after combination molding, don't put too long. 

　　风管法兰加工要保证法兰平面平整，规格要准确，与风管相配，以保证风管组合连接时接口密封性好。

　　Duct flange processing to ensure the flange surface level off, the specification to be accurate, to suit the duct, in order to guarantee good duct connection interface sealing combination. 

　　Duct can not have at the bottom of the transverse joint, and try to avoid the longitudinal seam, the specification of duct should be as far as possible to the whole plate production, minimize the stiffener, must set stiffeners also shall not use muscle strengthening and wind pipe stiffener. 

　　Duct should be made by the joint Angle or the Angle of bite, 6 magnitude of clean air duct shall not use buckle type bite. Bite damage to the galvanized layer, rivet hole and the galvanized layer of flange welding place preservative must fill do damage. 

　　Flanging duct joints and cracks around the rivet hole should be coated with silicone seal, duct flange must be smooth uniform. 

　　翻边宽度及铆钉孔，法兰螺孔必须严格按规范要求进行。柔性短管必须内壁光滑，一般可选用人造革或塑胶，风管检查门垫料要用软性橡胶。