A novel process of ambient temperature parkerizing and blackening for ferrous metals was studied, as also the effect of factors on the finishing quality.
提出了一种新型黑色金属常温磷化发黑工艺，研究了影响膜层质量的各种因素。
A novel process of ambient temperature parkerizing and blackening for ferrous metals was studied, as also the effect of factors on the finishing quality.
提出了一种新型黑色金属常温磷化发黑工艺，研究了影响膜层质量的各种因素。
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