Summary for descaling welded parts Discussion
Descaling of CR & HR mig welding is the core issue here: Jhon Santos asks how to remove weld scale from cold-rolled and hot-rolled steel by immersion only, because his current HCl process still needs manual cleanup and he wants to fit descaling into a 5-minute semiautomatic acid zinc plating line. The excerpt provided contains only the question, so no answerer’s recommendation is available in the source. The practical need is clear: he is looking for a faster, fully immersion-based method that can eliminate weld scale before plating without hand work. Since no replies are shown, the thread does not establish whether such a process is feasible or what chemistry or pretreatment would be best.
Q. Hi, I have a problem with descaling of welded parts (MIG & ELECTRIC WELDING) with CR STEEL & HR STEEL, the descaling I’m doing now is with HCl but this needs manual job to eliminate all the scale. Is there any way to eliminate this scale just by immersion in the bath. I plan to balance a semiautomatic acid zinc plating line and just have 5 minutes for descaling. I will appreciate your help.
JHON SANTOS
– Bogota, Colombia
July 29, 2022