Colored galvanized steel coil aging or photochemical reaction of the first necessary condition is the color coated coil surface components can absorb radiation energy;Secondly, when the radiation energy absorbed by the molecule is greater than the bond energy, the coating can degrade.The shorter the wavelength, the higher the energy.
Product Specification
| Thickness | 0.11mm-1.5mm | ||
| Thickness tolerance | +/- 0.02mm | ||
| Width | 600mm-1250mm | ||
| Width tolerance | +/-2mm | ||
| Zinc coating | Z40-Z275 | ||
| Color | Grey white, sea blue, red or any RAL standard | ||
| Painting | Top:20+/-5um Back:5mic---7mic | ||
| Standard | ASTM, AISI, DIN, GB,JIS | ||
| Material | SGCC , SGCD,SECC , SECD, DX51D+Z, S350GD, S450GD, S550GD | ||
| Technique | Cold rolled, hot-dipped galvanizing, color coated, galvanized | ||
Color Galvanized Steel Coil
Gloss Chromatic Aberration Original Thickness
In addition, here are two points to explain the current misunderstandings in the domestic market:
First, there is a large amount of white primer in the country.
The purpose of the white primer is to reduce the thickness of the topcoat because the corrosion-resistant primer for normal construction is yellow-green (and therefore has a strontium chromate pigment) and must have sufficient topcoat thickness for good hiding power.
In this way, the corrosion resistance is very dangerous. First, the primer has poor corrosion resistance, and the topcoat is greatly reduced to less than 10 microns.
Such a color-coated steel plate looks glamorous, and in a few years it will cause corrosion in different places (cutting, bending, under-film, etc.).
Second, the color coated steel plate for construction engineering uses different manufacturers and different batches of color-coated steel plates. It seems to have the same color in the construction, but after several years of sunlight, the color changes of different coatings are different. Different trends,
There are so many examples that lead to serious chromatic aberrations. Even if the products of the same supplier, it is strongly recommended that the same project be ordered once.
Because different batches are likely to use products from different coating suppliers, the possibility of chromatic aberration is increased.
Reasonable material selection not only improves the service life of buildings, but also reduces costs, thus truly achieving environmental friendliness and resource conservation.
Prodcution Coating
Color Galvanized Steel Coil
The aging of Colored galvanized steel coil in atmospheric environment is caused by the coating molecules absorbing the energy of ultraviolet wavelength in the sunlight which is higher than its molecular bond energy, leading to the degradation of coating molecules.With the aging of coating,
base material body gradually lost, coating surface gradually become rough and lose light.This loss of base material eventually leaves relatively stable pigment particles that remain on the surface of the coating as unbonded powders, a process known as pulverization. Polyester coating coil of different coating thickness has a big difference in aging resistance performance, thin coating coating roll aging resistance ability is poor, normal thickness coating aging resistance performance is relatively good. Color Galvanized Steel Coil
Packing
Color Galvanized Steel Coil Production Line
The calculation of the thermal stress of Colored galvanized steel coil in the process of coiling and
uncoiling is based on the calculation of differential equation of rolled steel as a ductile thin-walled tube or ductile composite tube.As a matter of fact, the color coating roll is usually thin and thick, and the color
coating roll has significant non-circular characteristics along the circumferential direction. If the color
coating roll is solved according to the circular curve, the calculation error will be very large.
Color Galvanized Steel Coil
Contact us
Chloe
Sales Manager
Henan Li Cheung Steel Co., Ltd
Address: DEVELOPMENT ZONE HUIGUO TOWN, ZHENGZHOU CHINA
Tel:+86 371 89812229 Fax:+86 371 89812228
MP: +86 13213178890 Wechat/Whatsapp: + 86 13213178890
E-mail: sales@licheungsteel.com
Website: www.jianhuissteel.com
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