It can be installed pipe is not removed, as long as the hydraulic components disconnect with a hose can be connected, which is the so-called online cycle pickling. The recipe and technology used in this unit for a long time have been integrated. It is not easy to cause over pickling, the construction of the harm to the operator is small, conducive to safe operation. The required equipment, equipment is simple, but also to ensure the quality of pickling rust. Pickling technology, so far this technology has been successfully applied to the cold-rolled plant 2 charging line price galvanizing unit, rail beam cooling and finishing the second phase, two cold-rolled pickling, rail beam finishing steel two and 100m waste heat quenching, steel hardware machinery parts billet new RH vacuum and other major projects in the hydraulic, lubrication system, a total of nearly 500,000 meters of carbon steel pipe construction, and achieved a good pickling effect and economic benefits. Such as some of the shorter pipe or not in the installation position of the loop to remove the pipe, in situ with a hose or connector connected to the loop for acid pickling, which is called the line outside the pickling. Here, a simple and convenient acid pickling technology with low cost and good pickling effect is introduced here.
The implementation of the new technology saves a lot of manpower, material and financial resources, reduces the difficulty of construction and shorten the construction period, the market economic benefits significantly, more importantly, breaking the conventional hydraulic, lubrication pipeline pickling technology, To shorten the construction period to lay a solid foundation and conditions. Therefore, the installation of hydraulic system equipment, in addition to pumping station equipment, a lot of work is the installation of the pipeline, in the pipeline installation process the most important work is the pipeline of online cycle pickling rust, especially carbon steel pipe, because the corrosion ratio stainless steel pipe is serious, and a little water on the return to rust, carbon steel pipe rust process than a lot of complex stainless steel pipe, but the material price is much cheaper than stainless steel pipe, so 90% of the hydraulic system is used in more than carbon seamless steel pipe, so the corrosion of carbon steel pipe is the whole hydraulic system piping construction process is very important part of the advantages and disadvantages of pickling effect is a measure of the quality of the main pipe signs, it will directly related to the hydraulic system cleanliness , And ultimately affect the system can function properly.
With the dissolution of iron, the relative increase in the carbon content of steel pipe, steel pipe brittle; reaction of hydrogen will penetrate the wall, resulting in hydrogen embrittlement phenomenon; the other iron dissolved too much, wall thinning, pressure decreased.Circulation pickling method is to pipe with a hose or union joints constitute a loop, with acid pump acid into the pipeline for acid pickling.
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