HJ431 is a kind of smelting-type red brown to light-yellow colored glassy granulated flux with high manganese and silicon but low fluorine mesh 8-14(2.5-1.5mm), 8-40(2.5-0.45mm)and 14-40(1.5-0.45mm).Either alternating or direct current can be used and welding wires must be connected with the positive electrode when direct current is used.The welding technology has good performance.

Usage

When applied to welding wires such as H08A,H08Mn,and H10MnSi, it can weld low-carbon steel and some low-alloy steel like 16Mn and 15MnV,as well as ships boilers and high-pressure vessels.And it also can be sued for electro-slag and copper welding.

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 300-400C before it is used