Execution Standard :GB/T 5293 SU08A                                 

                                              AWS A5.17 EL8

Description:H08A is a copper plated carbon steel submerged arc welding wire, combined with melting flux HJ431, HJ433, HJ434, sintered flux SJ301, SJ302, SJ501, SJ502, SJ503, SJ522, etc., arc combustion is stable, the weld is beautiful, easy to desagging, and the weld has good impact toughness.

Usage

Widely used in boiler, ships, pressure vessels and pipelines and other industries of carbon steel (such as Q195, Q215, etc.) and some low alloy steel (such as 09Mn2, 16 MnCu, 16Mn, 15MnTi) welding.

Chemical composition of welding wire: (mass percentage)%

Example of mechanical properties of deposited metal

Non-alloy steel and fine grain steel submerged arc welding wire precautions and operation points

Note

1, the size of the welding current should be selected according to the actual situation, too small will lead to poor welding forming, welding penetration, slag inclusion and other defects; Excessive assembly will cause deterioration of physical and chemical properties and crack resistance of welded joints, burning through, rough weld forming, etc.

2, the diameter of the welding wire and the size of the conductive nozzle should be consistent, the conductive diameter of the conductive nozzle is too large, resulting in poor conduction, deterioration of weld molding and even arc break;

3, after opening the package, the welding wire directly exposed to the air should avoid contact with water, paint, oil, etc., so as not to affect the use of the welding wire:

4, the flux must be baked for 1-2 hours at 300℃ -350℃ before use;

5, the welding line energy will directly affect the performance of the weld, special attention should be paid when using;

6, because of the different flux used by the user, the welding parts and processes are different, it is recommended to evaluate the welding process of the selected flux and wire before use, in order to be more in line with their own reality.

Welding wire handling and storage:

1. When handling the welding wire, it should be handled gently to prevent damage or deformation;

2. Welding wire is afraid of water, not near fire, and not resistant to high temperature;

3, the welding wire should be stored in a closed, dry and clean room, the room temperature should not be less than 5℃, the relative humidity is not more than 60%;

4, the warehouse storage, welding wire should be placed on the wooden tray or iron rack, the distance from the wall should be greater than 30cm, and according to the specifications, models, etc., placed respectively, to prevent mixing, the use should be in accordance with the "first in first out" principle.