Ador SAW Flux for Submerged Arc Welding — Heavy Structural Fabrication

Three reasons SAW dominates heavy structural: (1) Deposition rate — SAW deposits 12-25 kg of weld metal per hour vs 4-6 kg/h for MIG and 1-2 kg/h for stick (SMAW). For long straight welds + heavy plate welding, SAW completes in 1/4 to 1/8 the time. (2) Weld quality — flux covers the arc completely, eliminating spatter + producing very clean welds. (3) Cost-effectiveness — flux + wire chemistry is engineered + consistent, requiring less skilled operator vs other processes. Trade-off: SAW is limited to flat or horizontal positions + needs straight long weld geometry.

Fused flux: raw materials melted + cooled + crushed. Lowest cost + good arc characteristics + suitable for general structural. Bonded flux: raw materials mixed with binder + dried at lower temperature. Better arc stability + lower hydrogen + tolerates moderate plate contamination. Higher cost. Agglomerated flux: raw materials agglomerated with binder + processed at intermediate temperature. Premium quality + lowest hydrogen + suitable for code-compliant work + pressure-vessel work. Highest cost. Match flux type to application: general structural — fused; critical structural / bridge — bonded; pressure vessel / code work — agglomerated.

Match flux chemistry with wire electrode chemistry per AWS A5.17 / A5.23 system. Standard combinations: F7A2-EM12K (general carbon-steel structural), F7A4-EM13K (intermediate strength), F8A4-EM14K (higher manganese + notch toughness), F10P0-EH14 (high-strength low-alloy structural). The 'F' code indicates flux class + the wire electrode designation. Cross-reference your project's WPS for exact flux + wire combination required.

Yes — unused SAW flux (covering the weld but not melted) can be vacuum-recovered + sieved + reused. Typically 30-50% of flux discharged is recoverable per pass. Reused flux mixed with fresh flux for next weld (typical mix 50/50 fresh-to-recovered). Vacuum recovery equipment standard at high-volume SAW installations. Reduces flux consumption + cost. Fully-melted flux ('slag') is not recycled — it's brittle + chemically modified.

Three parameters control SAW weld quality: (1) Voltage (typically 24-40 V) controls weld bead width + arc stability; (2) Current (typically 250-1500 A) controls deposition rate + penetration; (3) Travel speed (typically 30-100 cm/min) controls heat input + final bead geometry. Heat input (kJ/mm) = (Voltage × Current × 60) / (Travel speed × 1000). Match heat input to plate thickness + steel grade per WPS. Lower heat input = lower distortion but higher porosity risk; higher heat input = better penetration but more distortion. Application engineering with Ador technical team for non-standard installations.

Yes. Vasundhara is GeM-registered supplier for Ador SAW flux + wire electrode. PSU tender response within 3-5 working days: Ador OEM authorisation, AWS A5.17 / A5.23 type-test certificates, ASME Section IX support documentation, batch traceability + per-batch flux moisture certification, installation + application support capability statement. PSU customers: BHEL, BEL, defence-PSU, government heavy-engineering installations + private bridge + pressure-vessel + wind-tower contractors.