Description

HJ107 is a kind of smelting-type non-Mn mid-Si and mid-F flux,which appears grey-black pumice-like particles with the mesh of 10-60 (2.0-0.3mm) or 8-40(2.5-0.45mm).It uses direct-current main.When it is used under higher arc voltage,the penetration is shallow,the arc is stable and the appearance of weld is pleasing to the eyes.Meanwhile,the consumption of flux is low and it is easy to detach the welding slag.Because it contains more CaF2and also cryolite is added in its ablity of anti-porosity and anti-cracking is greatlyimproved.In additon, adding Cr203into it not only makes the weld face appear pumice-like but also reduces the loss of Cr in the jprocess of stainless welding.

Usage

Excellent surfacing layers can be gained when it is used in the build-up welding in conjunction with appropriate welding wires or bands.It is suitable for the build-up welding of nuclear containers and petrochemical equipments’s corrosion-proof layers,stain-less clad layers and pressure vessels.In conjunction with HOCr16Mn16,it can be used in the build-up welding of the switchof austenitic manganese steel(Mn13)and welding of Nb-contained stainless steel.etc.

Performance of Surfacing Layers:

It can be used in the transition-layer welding in conjunction with HOOCr26Ni12 and in the build-up weliding of 50mm-thick18MnMoNb steel plate in conjunction with HOOCr21Ni10 as the surface-layer welding band.

Cautions:

1. Impurities on the welding surface must be removed before welding ,such as oil soil,moisture,iron dust.etc.
2. The flux must be baked for 2 hours under the temperature of 250-300C before it is used.