The steel structure engineering company reminds you of the processing precautions of the color coated plate

Steel structure processing is an important link affecting the color steel coating version, many manufacturers in order to ensure the quality of the product will have different regulations in many aspects, the following and steel structure engineering companies to understand some matters that need to be paid attention to when processing steel structure.

Because the surface of the prepainted plate is coated, there are many differences between it and ordinary cold-rolled plate and coated plate during processing, and the main difference is that it must be formed under the premise of ensuring that the coating is intact. Precautions when processing are as follows:

a) Mechanical properties (such as yield strength, tensile strength, elongation) are important indicators to measure forming, are important parameters for determining and adjusting processing technology, and are one of the main factors considered during processing.

b) Coating properties (such as pencil hardness, T bending value, impact work) are closely related to processing performance, and are another major factor to consider during processing.

c) Some mechanical properties (such as yield strength, elongation) and partial coating properties (such as pencil hardness, T bending value, impact work) of the prepainted plate usually change with the increase of storage time, thus affecting the processing and forming, which should be paid enough attention to.

d) When the shape of the part is complex and the degree of deformation is large, multi-pass forming should be used. If it is formed once, the adhesion of the coating may be destroyed due to excessive deformation.

e) When processing, appropriate gaps should be set according to mold shape, deformation characteristics, process conditions and other factors, and the thickness of the coating should be considered when setting the gaps.

f) Most coatings can be used as solid lubricants and can meet the lubrication requirements of most forming processes, and some coatings can improve the lubricity of the coating by adjusting the formulation. If the lubricity of the coating is insufficient, the lubricity can be improved by oiling, waxing, covering peelable protective film and other methods. However, it should be noted that the wetting agent solvent is easy to absorb dirt, should be removed before installation, and the peelable protective film should also be removed as soon as possible after processing.

g) Reasonable processing speed should be set according to equipment conditions, process conditions, part shapes and other factors, and too high deformation speed can easily lead to coating peeling. The flexibility of the coating decreases at low temperatures, so low-temperature processing should be avoided. If the ambient temperature is low, the material should be preheated to a certain temperature before processing.

h) The cut section generated during processing is prone to corrosion, so necessary protective measures should be taken, such as applying protective coatings, embedded seals, etc.

i) During processing, the burr of the cutting surface should be minimized to prevent the burr from scratching the surface.

j) All surfaces in contact with the coating should be kept clean and tidy, and chips and metal particles generated during processing should be cleaned up in time to prevent foreign matter from damaging the surface of the coating.

k) During processing, the wear of the forming roller roll surface or mold surface should be minimized, the contact surface should be kept smooth, and the coating surface should be prevented from indentation, scratches and other defects.

l) The construction method of factory pre-assembly and then sent to the site for installation should be adopted as far as possible, and protective measures should be taken during installation to prevent damage to the coating.

m) If the surface of the coating is found to be damaged during processing, special repair coatings should be used in time to repair to prevent corrosion at the damaged place.

I hope the above introduction to the precautions when processing steel structure will be helpful to you. Xirong steel structure specializes in the undertaking of steel structure engineering, call directly to consult more!