pickling-free treatment line
This processing line revolutionized pickling processing surface quality of steel coil traditional process, greatly improved the coil at the back of the process of production efficiency, energy conservation and environmental protection level and the product added value. This method adopts special equipment in the airtight space, water and steel shot (high hardness, size within 0.30-0.71 mm, we can use automatic cycle of 1000 times) – the mixture of mortar injection up to the plate surface,Mortar in a jet on the action of forces in addition to the steel plate surface accounts for about 2% of the ferric oxide Fe2O3 rust and about 18% of the top layer of magnetic ferroferric oxide and accounts for about 80% of the bottom of wustite (mainly ferrous oxide FeO)  finally the formation of a surface about 200 Mr Thick protective layer, the layer is very thin layer of protection is a very stable “membrane”, can inhibit further corrosion, and no residual oxide, therefore, can make steel plate surface is smooth and clean surface of the so-called green without acid clean surface.
At the same time, EPS mortar injection technology has completely different characteristics from conventional blasting machine:
1. Medium is the mix of steel sand and water to form a wet medium — that is, the so-called mortar, use does not produce smoke and dust to the work environment pollution-free very quiet.
2. The steel shot is still clean after recycling, and the water in the medium has passivation effect on the surface of the steel plate.
3. Different surface roughness (different Ra value and very low Rz value to meet the needs of different occasions) can be produced by adjusting the injection speed and Angle of the medium to the steel plate.