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There are three ways to test the corrosion resistance of hot-galvanized sheet: salt spray test; Wet test; Erosion test.
View：86 Date: 05-08-2023
Chromate passivation treatment of galvanized sheet can form passivation film, its chemical reaction formula is as follows: Zn+H2GrO4-ZnGrO2=H2The trivalent chromium in solution pas···
View：83 Date: 05-08-2023
large zinc flower is normal zinc flower, according to the normal production process can produce large zinc flower, its crystal core diameter is not less than 0.2mm.
View：85 Date: 05-08-2023
Dark spots are formed by further oxidation of white rust. The main causes of white rust are:Poor passivation, passivation film thickness is not enough or uneven; No oil on the surf···
View：81 Date: 05-08-2023
The main reasons for zinc layer shedding are: Surface oxidation, silicon compounds, cold bound emulsion is too dirty, NOF section oxidation atmosphere and protective gas dew point ···
View：78 Date: 05-08-2023
What is the length of the coil?
View：76 Date: 05-08-2023
Mainly: peeling, scratches, passivation spots, zinc particles, thick edge, air knife stripes, air knife scratches, exposed steel, inclusion, mechanical damage, poor steel base perf···
View：83 Date: 05-08-2023
There are two kinds: air-cooled and water-cooled.
View：79 Date: 05-08-2023
There are three kinds of vertical, horizontal and vertical annealing furnaces.
View：74 Date: 05-08-2023
Product categories: General coil (CQ), structural galvanized sheet (HSLA), deep drawing hot galvanized sheet (DDQ), baking and hardening hot galvanized sheet (BH), duplex steel (DP···
View：78 Date: 05-08-2023
It can be divided into two types of in-line annealing and out-of-line annealing, which are also called protective gas method and flux method.
View：89 Date: 05-08-2023Sales hotline：
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