空气预热器制造及双锥导流体成型工艺技术

空气预热器是碳黑工程设备,其结构复杂,壳体带有两个双锥导流体和一组三波形膨胀器,制造加工难度大。换热器结构复杂采用体外穿管及合理装焊工艺。由于该设备有特殊折边封头锥体,为此采用＂多用可变内环胎模折边成型＂六种8件折边锥形体;对于多波形膨胀器制造,则采用热煨管切割展开内外环对接法成型技术。

Technologies of Air Preheater Manufacturing and Bicone Diversion Body Mould

Air preheater belongs to the black carbon engineering device. The preheater has complicated structure, and its body consists of two bicone diversion body and a set of three wave form expander. The manufacturing and pro- cessing is very difficult, technologies of tube circling outside the core and reasonable assembly welding are adopted. Regarding to this type device has a special fold side seal head cone, 6 types and $ pieces fold side cone-shaped body was processed by fold side and mould method of multifunction variable inner ring tube mould, furthermore, for multi- wave form expander manufacturing, the mould technique of machine cutting and expanding heating tube and butt weld- ing of inner ring and outer ring was carried out.