As the saying goes: "one-third by the material, seven by construction," from all steel construction project quality control, the use of paint as paint is just the semi-finished products, will be a reliable quality assurance and meet protection standards request planning, both have the appropriate quality rust grade standards, supporting a reasonable and accurate planning and paint coating varieties to choose from, but also a sound quality assurance system engineering and construction skills in place to ensure the ability to achieve induction; but the quality of work on the steel structure rust appearance , the people in the industry thought: this step will affect more than 60% of the coating quality, even directly determines the maintenance cycle and the use of steel construction years of construction.

   The following is the author in Qingyuan steel coating application engineering practice encountered several problems and treatment measures:

    1, Qingyuan steel workers at the factory, even though for the steel member by shot blasting, but also concerned about the quality rust and see if it can reach the planning request. Such as the I-beam, H-beam welding parts of the female angle, with the laminated steel welded into a group of member intersections or gaps and other parts. This situation does not rust in place, usually can stand up twice and then throw law, member slow moving velocity method, and the pre-shot blasting steel parts after welding methods to deal with.

    2, see the relevant personnel are not equipped to view things. If there is no appearance of rust steel quality grade visual comparison of sample or photo, the construction site without coating thickness, fireproof coatings stylus etc; construction workers without specialized manual mechanical descaling things, such as small hammer, knife, chipping and electric angle grinder and so on. There are some workers trouble, something is not willing to bring alone a wire brush to rub back and forth several times, so there are weld, welding slag adhesion portion and the female corner portion of rust is difficult to guarantee the quality!

    3, coating construction program targeted not prepared. Although the construction organization planning the tender documents or the total package is also mentioned, but not usually described in depth, no guidance, lack of maneuverability, many managers do not pay attention to this, because it is thought that painted brush brushing job anyone capable, quality and safety tests, without skills, tests, or a mere formality. Some construction Painting "professional team" without skills training, operator skill is low, and if asked why you need curing time? Why pay attention to Coating interval time? Why when joints without testing the welds and the surface should not be painted with the basic conflict issues such as paint, often confused I do not know why.

    4, shoddy, shoddy paint and construction work is not in place to affect the picture quality of the project. Such as: painting a steel construction project a total area of ​​4,000 square meters, although according to the plan selected request regular manufacturers of paint product, but in practice the use of the total amount of the project in just over 2 tons of paint, found a uniform coating of dry film thickness only total as 60μm, painting over the number and the total thickness of the coating does not reach the planned request; Another example of a steel structure brackets and pipe anti-corrosion coating gallery of Chemical Plant, indiscriminately purchase and use of the general anti-red iron on the market rust paint and phenolic mixed paint, coupled with this type of pipe rack structure shape messy, rust quality simply not up to the quality level of planning requests, more than a year after painting, coating began to rattle large drop can not be not to re-paint the replacement varieties, completely rework repair.