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前言我厂自行设计的SZL4—13—AⅡ型双锅筒纵置式水管快装链条炉排锅炉,以其设计性能良好,热效率高,节约煤炭,结构新颖,安装方便等特点,于1983年获得机械工业部科技成果二等奖。SZL 系列锅炉产品已成为我厂的主导产品。但是,这种锅炉的两个主要零部件——φ159和φ219锅炉集箱管的管端系采用鼓形端盖手工焊接单面成型焊制而成,工序繁锁,工艺落后,焊接质量得不到控制和保证,合格率低,X 射线无损探伤一次合格率仅有
Preface Our factory self-designed SZL4-13-A Ⅱ double-drum vertical type pipe quick chain grate boilers, with its good design performance, high thermal efficiency, saving coal, novel structure, easy installation and other characteristics, in 1983 to obtain machinery Ministry of Industry Science and Technology Achievement Award. SZL series boiler products have become the leading products of our factory. However, the two main components of this boiler, the φ159 and φ219 boiler header tubes, are welded using a drum-shaped end cap by hand-welding one-side forming and welding, with complicated processes, poor workmanship and poor welding quality To the control and assurance, low pass rate, X-ray non-destructive testing a pass rate only