Description

HJ350 is a kind of smelting-type mid-Mn mid-Si and mid-F flux.It appears brown to light-yellow glassy particles with the mesh of 8-40(2.5-0.45mm) and 14-40(1.5-0.45mm).During the course of welding,either direct-current or alternating-current main can be adopted and welding wires are connected to the positive electrode when the former is adopted.Its welding performance is excellent.

Usage

Can be used in the welding of low-alloy steel structures in conjunction with welding wires.It is widely used in the welding of ships ,boilers,high-pressure vessels etc.The flux with fine particle size can be used in the fine-wire submerge-arc welding of thin plate structures.

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