1.Rusting treatment
2.Rust layer curing treatment
3.The difference between Rusting and rust layer curing treatment
1.Weathing steel Rusting treatment:
1). Wipe oxide skin on steel body through sand blast or pickling.
2). Confect handling hydrojet for weathering resistant steel. Blend weigh percentage of 0.1%～3%NaCl、0.3%～3%FeSO4、0.1%～3%CuSO4 and 0.3%～3%NaHSO3 with water and pour into bucket. Whip equably and wait the color of solution turning azure. Hydrojet handling for weathering resistant
steel is finished.
3). Inject concocted hydrojet for weathering resistant steel into spray. Spray steel surface for 3-5 seconds evenly, until its color turns brown. After once, let the surface dry naturally. Meanwhile, absorb residual solution under steel bottom through absorbent material to guarantee the upper and lower have same drying time. Spray again after the steel is dry. Dry twice to ensure the surface form Uniform and dense rust layer.
2.Weathering steel Rust layer curing treatment:
1). Weight percentages of dope of rust layer surface on weathering resistant steel components are PVB 4.1%～6.5%; chromium sulfate 8.5%～8.7%; corrosion inhibitor 3.7%～5.7%; iron oxide red 12.9%～13.2%；barium sulfate 28.3%～28.9% respectively. Other solution is absolute ethyl alcohol. Corrosion inhibitor is sodium molybdate or at least one of them(sodium molybdate, zinc phosphate and talcum powder). Thereinto, zinc phosphate weight percentage is 0～1.0% gross and talcum powder is 0～2.0% gross. They both are made from
common dope manufacture technology.
2). Its components and handling technology is simple. Coat through painting without many procedures; Coat could become solidification in short time. Coat also could improve the anti-corrosion property and stable feature of weathering resistant steel. And coat could make corrosion output with repair capacity and enhance rust solution hanging phenomenon. So it can be used in metallurgy enterprises and construction spots.
3.The difference between Rusting and rust layer curing treatment:
Colour:
1). Rusting: The color of rust will undergo a series of change processes from light yellow, orange red, rust red, bronzing and dark bronzing without solidification.
2). Rusting + Rust layer curing treatment: Its color will fix without large changes if it is handled through rusting and Curing treatment .
State:
1). Rusting treatment: Rust layer could be formed on its surface. And there is rust fallen when you touch it.
2). Rusting + Rust layer curing treatment: Rust won't fall and feel smooth through rust and solidification.
Weathering steel Color formation time:
1)Rusting: Color in the form of the gradient, 2-3days will to be changed one color, Basically, the color will fixed the reddish-brown color after 2months around.
2)Rusting + Rust layer curing treatment: The color is reddish-brown after solidified, and the color is finalized. The cured film can maintain two years around.(According to the environment.) After taking off the film, the color won't have big change.
Get Free Programme and Budget About how to make core tin steel rust
