The cleaning step of the Q345B seamless pipe is to remove the surface layer of the Q345B seamless pipe organically and chemically when applying the heating furnace step by step in advance, in order to better remove the machinery and equipment and its production process. The high-temperature oxide scale formed during the process is also during the entire transportation process of the heating furnace and after the equipment is finished. During storage, there will be some fine sand or vegetable oil coating, and some serious corrosive substances, which will make it adhere to the surface layer and form an excellent passivation layer on the surface of the Q345B seamless pipe. Chemical treatment membrane. When cleaning, a cleaning plan is required.
The actual operator should have a practical grasp of the heating furnace, analyze the material of the heating furnace, determine the cleaning method, select the type of cleaning liquid, and adjust the concentration of the cleaning liquid. Pay attention to the cleaning method, cleaning time, and appropriate temperature to formulate a more effective solution, and at the same time formulate some safety protection measures. Q345B seamless pipes are divided into general Q345B seamless pipes, low and high pressure heating furnace Q345B seamless pipes, geological environment Q345B seamless pipes and other Q345B seamless pipes. There are more classifications of cold-rolled alloy steel pipes than hot-rolled steel pipes. The diameter of Q345B seamless pipe is generally above 32mm, and the wall thickness is 2.5-75mm. The diameter of cold-rolled alloy steel pipe can reach 6mm, and the thickness can be reduced to 0.25mm. The diameter of thick-walled pipe can reach 5mm, and the wall thickness is less than 0.25mm. The specification precision of cold rolling is higher than that of hot tie.
The Q345B seamless tube can optimize the crystal and eliminate the shortcomings of the microscope mechanism, thereby promoting the improvement of the compactness and physical properties of the stainless steel plate mechanism. This improvement is mainly reflected in the direction of cold rolling, so that the stainless steel plate is no longer anisotropic to a certain extent. First, after hot rolling, the non-metallic material inclusions inside the stainless steel plate are rolled into a plate shape, forming a layered (sandwich) state. The second is the internal stress caused by symmetrical cooling. The third is hot-rolled stainless steel plate products, which are difficult to handle in terms of thickness and side width. An obvious feature of Q345B seamless pipe is heat resistance, because this heating furnace Q345B seamless pipe is mainly used in machining positions.
Because Q345B seamless pipe must be heated at high temperature during production and processing. However, only Q345B seamless pipes can withstand such a high temperature, and can perform various rough deformations better. Therefore, the heat resistance of Q345B seamless pipe is also very good. It is not easy to melt at high temperature, so if the raw material of Q345B seamless pipe must be heated at high temperature, it will be a very good choice to choose Q345B seamless pipe. Hot rolling is cold rolling performed above the work hardening temperature, and cold rolling is cold rolling performed below the work hardening temperature. Regardless of everything is multifaceted, so is Q345B seamless pipe, which has its own advantages and disadvantages.
Seamless steel pipes have a hollow cross-section and are widely used as pipes for transporting fluids, such as pipes for transporting oil, natural gas, gas, water, and certain solid materials. Compared with welded tubes, steel pipes are lighter in weight when they have the same bending and torsional strength. They are economical cross-section steels and are widely used in the manufacture of structural parts and mechanical parts.
Article source: https://article-realm.com/article/Finance/34257-Introduction-of-Q345B-seamless-pipe-cleaning-method.html
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