Hot-dip galvanized steel welding precautions, galvanizing, also known as hot dip galvanizing : is an effective metal anti-corrosion method that can prevent rust and corrosion and reduce wear welded tube manufacturers. The rust-removed steel is immersed in a zinc solution melted at about 500 ° C to adhere the zinc layer to the surface of the steel member, thereby preventing corrosion. With the ban of cold-galvanized steel pipes, hot-dip galvanized steel pipes have developed rapidly, and hot-dip galvanizing has also increased. Let’s take a look at the welding of hot-dip galvanized steel.
Can the steel after hot-dip galvanizing be welded?
The galvanized steel may be welded as long as the welding conditions such as the welding material, the welding surface, the welding current, the welding speed, and the welding method are appropriate.
Generally, the welding strength of the steel does not decrease. However, as the thickness of the galvanizing increases, the range of suitable welding conditions becomes narrow, which makes the welding difficult. Therefore, it is preferable to completely remove the zinc in the welded portion during welding.
When welding galvanized steel, the following points must be noted:
(1) A large amount of smoke is generated during welding, and the welder may have emotional adverse effects when inhaling, so it is necessary to wear a mask or install a smoke evacuation device.
(2) After welding, the welding slag shall be removed, and the zinc layer peeling part shall be repaired with high zinc paint or repaired by zinc welding.
It can be seen that there is no special problem with welding. However, on-site welding is always harmful to the appearance, so bolts are used as much as possible.
Hot-dip galvanized steel welding precautions are here. Hot-dip galvanized steel pipes are used for transportation and construction. Hot-dip galvanizing is a process technology for immersing metals such as steel, stainless steel and cast iron into molten liquid metals or alloys to obtain coatings. Hot-dip galvanizing is the most widely used and cost-effective steel surface treatment method in the world. I hope the above can help you.