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根据全位置立向下焊接的特点和要求,在对现有各类焊条渣系的物理性能及工艺性能进行试验分析的基础上,通过大量的试验,确定了具有短渣特性的高氧化钛渣系及高发气量的微晶纤维作为电焊条的基本配方,并加入适量的铁砂,利用其在焊接时冶金化学反应中的放热反应,提高电焊条的熔敷效率.新研制的纤维素型电焊条,在全位置立向下焊时基本上满足了:(1)对熔池及焊缝成型的有效控制;(2)产生强的电弧吹力,大的熔深度,以便打底时可以保证单面焊双面成型;(3)高的熔敷速度以及良好的工艺性能和物理化学冶金性能等
According to the characteristics and requirements of all-position vertical welding, based on the test and analysis of the existing physical properties and technological properties of various existing slag slag lines, through a large number of tests, the high titanium oxide slag Department and the high gas volume of the microcrystalline fiber as the basic formula for welding electrodes, and add the right amount of iron sand, the use of its metallurgical chemical reaction in the reaction of the exothermic reaction to improve the welding electrode deposition efficiency. The newly developed cellulose-based welding electrodes basically meet the requirements of all-position vertical welding: (1) effective control of the weld pool and the weld formation; (2) strong arc blowing, large penetration depth , So that when the bottoming can guarantee single-sided welding double-sided molding; (3) high deposition rate and good process performance and physical and chemical metallurgical properties