we are doing blackening on the c55 steel sheet and also doing same process on a investment casting of same metal on a lot basis.casting we took from same lot and a sheetmetal component we take from one large sheet. always we found that 20-30 % component either casting or sheetmetal component instead of being blackening allover it is somewhere rediish or some thing like this type of color.
may anybody have the solution for the problem. is it a defect of material? i m not sure since rest o the qty we found ok
blackening thru electroplating
Re: blackening thru electroplating
