XAR400 Hardox400-welding process

Welding process of wear-resisting steel plate

Key points of welding process

(1) Preheating measures are taken before welding to ensure that the preheating temperature of steel plate ≥200℃.

(2) Before welding, Hardox400 or XAR400 wear-resistant plate should clean up the groove and oil, rust and other dirt within the range of 30~50 mm from both sides of the groove.

(3) It is recommended to use low hydrogen and ultra-low hydrogen welding materials for welding materials.   Solid wire is recommended for CO2 welding.   Low temperature cracks (hydrogen - induced cracks) are less likely to occur in welding materials with low strength levels.  

(4) Manual arc welding electrode for 350 ℃ drying, drying temperature reaches 1~2 h, as needed.

(5) In the welding process, control the temperature between welding layers ≥200℃.  

(6) After welding, the welding seam of NM500 wear-resistant plate takes asbestos insulation, so that it is slowly cooled.