What are the requirements for weathering steel?

When weathering steel is used, what are the requirements for use? Let weathering steel screen manufacturer JBL garden take you to understand.

Garden screen panels 

Weathering steel engineering installation is mainly used for rolling, hot die and hot forging die, mineral grinding roll, pipe die and other wear-resistant, heat-resistant hard surface welding and size restoration. In the submerged arc surfacing welding, DC reverse connection (weathering steel engineering installation connection) is used. According to the specific product situation, with the corresponding flux. Hard weathering steel engineering installation is a thick wire, the specification is usually in φ2.6 ~ 4.0mm. Generally, when the installation specification of weathering steel engineering is φ3.2mm, it is recommended to use 260 ~ 400A current, 28 ~ 36V arc voltage, 450 ~ 550mm/min welding speed, about 20 ~ 50mm dry stretch length and other welding parameters to implement surfacing welding.

Wall screen panels

When the base material [C] is ≥0.30%, the temperature between the first layer should be increased by 50 ~ 100℃; When the base material [C] is ≥0.60%, it is appropriate to select the appropriate transition layer weathering steel engineering installation for transition (lap amount 50 ~ 60%); When the base material [C] is ≥0.70%, the preheating temperature should be increased by 50 ~ 100℃. When [C]≥0.90%, surfacing welding is generally not recommended to obtain high hard layer.

Fence screen panels

As usual, all welding materials, fluxes and base materials shall be moisture-proof, rust-proof, oil-free and paint-free. Can choose KN107, KN260, KN101, KN105 and other flux, but the first matching use must be surfacing welding evaluation. The rising and cooling speed is controlled at 20 ~ 50℃/ hour. The corresponding hardness value is the hardness of the third layer after tempered surfacing.