PRODUCTS

Application

Suitable for welding important structures such as ships, bridges, high-pressure pipelines, pressure vessels, boilers, and offshore platforms.

Characteristics

The JL-J507Ni is a specialized non-alloy steel electrode for pressure equipment, featuring a basic coating type. It employs DC reverse polarity and enables all-position welding. This electrode exhibits excellent welding process performance with stable arc, minimal spatter, easy slag removal, and aesthetically pleasing weld bead formation. The weld metal demonstrates good plasticity, toughness, and crack resistance properties.

Deposited metal chemical composition:%

Diffusion hydrogen content of deposited metal:≤5.0mL/100g(Mercury method) X-ray inspection requirements for deposited metal:Grade I

Mechanical properties of deposited metal

Reference welding parameter:(DC+)

Note

The welding electrode must be baked at 350-380°C for 1 hour before welding, then stored in a thermostat at 100-150°C for immediate use when needed.

Remove rust, oil, water, and other impurities from the work piece before welding.

During welding, short arc operation should be used, with the oscillation amplitude not excessively large, and narrow weld bead welding is preferable.

To prevent the occurrence of arc initiation porosity, arc initiation plates or the arc initiation return method should be used for welding.