Welding Flux

  F7A0

Introduction: JQ.SJ301C is a kind of neutral calcium-silicate type sintered flux for ships. The alkalinity is approximately 1.0. Black round grains. The granularity is 2.0~0.28mm (10~60 meshes/inch). It has excellent welding performance, stable arc, good slag detachability and beautiful appearance of weld. The deposited metal has excellent low temperature impact toughness. AC/DC. When welding with direct current, the wire should be connected to the positive terminal.

Uses: If used together with appropriate wires (such as H08A), they can be used for welding hull structures, and also used for welding general structural steel, boiler steel, pipeline steel, etc. Able to be used for multi-pass welding, single pass welding by both sides and multi-wire welding.

Introduction: F7A2 is a kind of aluminate-rutile type acid sintered flux. The alkalinity is 0.5. Round grains. The granularity is 2.0~0.28mm (10~60 meshes/inch). It has excellent welding performance, stable arc, good slag detachability, beautiful appearance of weld and strong blowhole-resistance. It is especially suitable for high speed welding. When welding water-cooling walls of utility boilers, the welding speed can reach over 70m/h. AC/DC. When welding with direct current, the wire should be connected to the positive terminal.

Uses: If used together with the wire H08A, they can be used for welding key low-carbon steel and some low-alloy steel structures, such as boilers, pressure vessels, etc.