China Galvalume steel coil suppliers china introduces galvanized materials

Release time:

Mar 28,2023

China Galvalume steel coil suppliers china introduces galvanized materials

China Galvalume steel coil suppliers china tells you that the defects of galvanized materials mainly include: shedding, scratches, passivation spots, zinc particles, thick edges, air knife streaks, air knife scratches, exposed steel, inclusions, mechanical damage, steel Poor base performance, wavy edge, warped ladle, inconsistent size, embossing, the inconsistent thickness of zinc layer, roll printing, etc.

China Galvalume steel coil suppliers china tells you that the main reasons for the peeling of the zinc layer are: surface oxidation, silicon compounds, too dirty cold-rolled emulsion, the too high dew point of oxidizing atmosphere, and protective gas in the NOF section, unreasonable air-fuel ratio, and low hydrogen flow rate, Oxygen infiltration into the furnace, low temperature of the strip steel entering the pot, low furnace pressure in the RWP section and suction of the furnace door, low furnace temperature in the NOF section, endless evaporation of grease, low aluminum content in the zinc pot, and too fast unit speed. The reduction is insufficient, the residence time in the zinc solution is too short, and the coating is too thick.
China Galvalume steel coil suppliers china tells you that the reasons for white rust and black spots are as follows: black spots are formed by further oxidation of white rust. The main causes of white rust are: (1) poor passivation, insufficient or uneven passivation film thickness; (2) no oil on the surface or residual moisture on the strip surface; (3) moisture on the strip surface during coiling; (4) Passivation is not completely dried; (5) Moisture or rain during transportation or storage; (6) The finished product is stored for too long.
Through the above introduction and analysis of China Galvalume steel coil suppliers china introduces galvanized materials, hope it helps you.

On 25 November 2022 , 50 tons of Galvalume steel coil were delivered from Lianfeng Steel to Jakarta Port, Indonesia. The following is the whole process of order production and shipment.

The main purpose of color-coated board

Coated steel plate is also known as color-coated steel plate and color-coated steel plate. Color-coated steel plate is a kind of color-coated steel plate. Products made by rolling coating paint and baking and cooling after conversion treatment. The substrates of color-coated plates include cold-rolled substrates, hot-dip galvanized substrates, electro-galvanized substrates, and aluminum-zinc-plated substrates. The types of paint coating on color-coated plates can be divided into polyester, silicon-modified polyester, vinylidene fluoride, high weather-resistant polyester, etc. The production process has developed from one coating and one baking to two coating and two baking. Three coating and three baking processes have also appeared. There are many colors of color-coated panels, such as white gray, sea blue, orange, sky blue, crimson, brick red, ivory white, porcelain blue, etc. The surface state of color-coated panels can be divided into ordinary coated panels, embossed panels and printed panels. The market uses of color-coated panels are mainly divided into construction, home appliances and transportation.

We are located in China's industrial province - Shandong Province, on the verge of the Bohai Sea and the Yellow Sea, with convenient export and transportation conditions. Shandong Banghong New Material Co., Ltd. has diversified products.

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