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Blackening Technology of fastener

2018/6/9 12:16:15 Viewers:
Fastener is a kind of part which is widely used in our daily life, and the blackening of fastener is a kind of technology to optimize the fastener and prevent the rust and aging.
Blackening is the blackening of tempering in the heat treatment process. The black production process has a variety of specific technical quality problems due to different enterprises. These changes directly affect the quality of the fasteners.
During the process of fastener blackening, the quality of the product can be blackened once again, the concentration of blackening agent is adjusted, and the cleaning fluid is replaced.