1, iron, iron and boron deoiling: alkaline deoiling agent, emulsifier, and organic deoiling is very corrosive to iron and iron, and easy to rust after oil and water washing, forming a yellow rust film.
2, iron iron boric acid wash, iron iron boron oxide, iron easy to moisture absorption, can shorten the processing step can reduce consumption of iron iron boron province, large part of corrosion on the iron iron boron produced in the process of pickling, relatively dilute nitric acid + corrosion inhibitor application more, pickling, shorter time, because of dilute nitric acid oxidation, easy cause iron iron oxide, dilute nitric acid liquid quickly change from colorless to yellow, the main point is the combination of iron and iron Their formation; Pickling time is too long, its surface ash, not easy to clean, pickling surface in the activated state, easier to rust.
3, ferric ferric boron passivation: the production process of ferric ferric boron is different from the formation of stainless steel through smelting, mainly powder bonding and sintering formation, hinge, iron, and laying bricks between the crystal structure is not dense, is the multi-pore material containing adhesives, strong oxidation acid passivation liquid will only increase corrosion; Alkaline passivation solution used for ferrous products (package, including stainless steel passivation, the effect is relatively general), general alkaline passivation solution for iron iron boron is main or temporary antirust effect, add close after processing, the effect may be better, and passivation of alkaline degreasing, washing, pickling, washing and passivation, washed, such as step cannot little, closed, or clean with alcohol, working hours and cost Relatively large; Phosphating for iron shed surface treatment, can only play the role of temporary rust, complex process.
4, iron and iron sealing hole treatment: iron, iron and boron sealing hole is mainly used for electroplating or electroless plating before treatment, spray paint bubbles also need to seal the hole in four in one treatment: based on the analysis of iron, iron and the process, the development of oil removal, rust removal, passivation rust prevention, sealing hole four at room temperature (temperature 30-40 degrees is better) , the use of ultrasound with iron iron build by laying bricks or stones four unified treatment fluid do cleaning processing, time, generally in about 10 minutes, for the surface grease, showed only floating (not rusty spot) iron rust iron products to do four processing is very suitable for combination, effect is better than that of phosphating, very suitable for post-processing technology (post-processing: electroplating, electroless plating, electrostatic painting, epoxy resin) iron iron boron four one surface treatment It is the development of simple and effective pretreatment, the more the iron treatment process, the greater the consumption.
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