The environment when the steel plate is placed or processed and manufactured is usually dust and float. The lubricated appearance of the steel plate will be covered by these dusts from time to time, so use an alkaline solution or water to stop the liquidation process, but if the dust falling on the surface of the steel plate is Strong adhesion, it must be cleaned with steam or high-pressure water to be effective. Before delivery, the steel plate produced by the steel plate manufacturer may be severely contaminated, causing local rust spots on the surface, and these rust spots are often not easy to be found. Therefore, water experiments or iron experiments should be used to stop serious inspections and promptly remove the rust spots. Liquidate talents and put them into use. The steel plate usually undergoes a pickling process to remove the rust and oxide on the surface, but machining and grinding will cause the surface of the steel plate to show defects such as stacking, burrs, and grooves, and the damage level is relatively deep. The rough surface of the steel plate will become generated The origin of deposits and corrosion, and even after electropolishing, shot blasting and pickling, these defects are removed, so it is necessary to use fine abrasive grinding to remove weld defects.
How to make the surface defects of the steel plate become smaller and smaller
If the welding parameters of the welding process dispose of the Q345B steel plate improperly, a large amount of spatter will appear. The general welding spatter has a great influence on the welding process. You can apply the anti-splash agent to each side of the joint before welding, or adjust the parameters appropriately. Can effectively deal with the problem of welding spatter. Arc welding with flux core, submerged arc welding, and manual sweat are all common welding processes. When the steel plate is stopped, it will often leave small flux particles on the surface. If it cannot be removed in time, it will become the source of crevice corrosion, and only It can be removed by mechanical liquidation algorithm, and ordinary liquidation methods cannot be removed.
The steel plate is not a title of steel type, there are many types of steel, there are currently more than 180 kinds, which does not include the special steel grades developed by many steel mills. Different steels, their corrosion resistance, magnetic properties and workability can be quite different. There is no corrosive environment in all steels, but in the ordinary atmospheric environment, most steels are less likely to rust. The fundamental definition of steel is that iron-based materials can apply heat treatment to change their properties. However, there are only a few steel grades that can be modified by heat treatment to change their strength and material structure.
The steel plate has the ability to resist ordinary corrosion with unstable nickel-chromium. Heat in the temperature range of chromium carbide levels may affect the alloy in harsh corrosive media. Mainly used in high temperature applications. High temperature materials have strong sensitization to avoid intergranular corrosion at lower temperatures. All steel plates have high temperature oxidation resistance, but the oxidation rate will be affected by the factors of the exposed product form. In addition to the thermal conductivity of the metal, the total heat transfer coefficient of the metal depends on other factors. Under most conditions, the film layer dissipates heat. In my country's steel plate industry, it is currently in a state of improvement, and many steel industries are preparing to reopen the old market and relaunch my country's steel industry.
