TIG/FCAW automatic overlaying technology of stainless steel corrosion resistant layer on nozzle inner wall of 20MnMoNb
The carbon nozzle inner wall overlaying corrosion resistant layer was a common structure type on nozzle of media and heavy composite plate pressure vessel.This type was characterized by limited overlay space on small diameter nozzle and large overlay area on large diameter nozzle.Taking the corrosion resistant overlaying layer on 20MnMoNb nozzle inner of stainless steel composite plate three-phase separator as an example,by welding procedure qualification test,the weldability of 20MnMoNb forging was analyzed in the paper,made reasonable TIG/FCAW automatic overlaying procedure and process quality control measures,and got corrosion resistant layer with good quality,met the mechanical properties and corrosion resistance requirements of the nozzle.
20MnMoNbforgingoverlaying on inner wallstainless steel corrosion resistant overlaying layerTIG/FCAW
万方数据
维普
