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Project Introduction: Special Projection‑Welding Machine for Wind‑Turbine Ventilation Ducts

Aug 18,2026

Ventilation ducts of wind‑power generators undertake air guiding, heat dissipation and ventilation functions. Conventional welding brings high heat input and coarse weld appearances. I‑steel beams tend to deform, suffer poor flatness, weld slag inclusions and cold joints. Under long‑term fan vibration, weld cracking, structural loosening and duct deformation may occur, resulting in poor heat dissipation, overheating and emergency shutdown of generating units. The Haifei special projection‑welding machine for wind‑turbine ventilation ducts is developed for I‑beam welding of ventilation ducts. With dedicated projection‑welding technology, it produces compact weld nuggets, high structural strength and low component deformation, ensuring regular duct geometry and stable heat dissipation performance.

I Customer Background & Production Pain Points

The customer manufactures components including wind‑generator ventilation ducts, I‑steel support frames and wind‑power heat‑dissipation structural parts.

Drawbacks of original welding processes:

1.Traditional welding has scattered heat input and wide heat‑affected zones. I‑steel beams twist, warp and lose flatness, which deforms ventilation ducts and causes assembly misalignment and degraded heat dissipation.

2.Unequal fusion in conventional welding easily generates pores, slag inclusions and incomplete fusion inside weld spots.

3.Manual welding delivers limited positioning accuracy and obvious component deformation.

4.Rough weld appearance, lack of targeted process systems, mismatched pressure‑energy parameters and non‑traceable process data.

II Customer Requirements

1.Adapt to I‑beam welding conditions, optimize projection‑welding parameters to improve weld compactness and structural strength, reduce weld cracking and structural loosening.

2.Implement controllable low heat‑input welding, narrow heat‑affected zones, minimize twisting and warping of I‑beams and guarantee dimensional accuracy and assembly performance of ventilation ducts.

3.Stabilize welding pressure and energy output to achieve full nuggets and uniform weld‑spot strength.

4.Improve welding surface quality; support parameter storage & quick switching for multiple product specifications, with storable and traceable process data.

III Custom R&D Solutions

The specialized R&D team iteratively optimized schemes addressing welding challenges of I‑beams for wind‑power ventilation ducts:

1.Process Verification: Multiple groups of welding tests for ventilation ducts of different specifications.

2.Equipment Selection: Deploy Haifei special projection‑welding machine for wind‑turbine ventilation ducts. It supplies sufficient welding pressure and concentrated, stable energy output. Compact weld fusion is realized with good surface finish. It effectively mitigates section‑steel warping and distortion. Welding parameters remain steady, delivering uniform penetration and strength.

3.Mechanical‑structure Design: Custom exclusive tooling with stable operation and precise positioning to reduce component deformation and alignment offset.

4.Core Advantages

High Strength: Solid fusion, excellent load‑bearing capacity.

Fine Weld Quality: Even heating, low deformation.

Stable Performance: Uniform forming, high consistency.

IV Delivery, After‑Sales & Customer Feedback

Pre‑acceptance and on‑site equipment inspection were completed. Continuous trial operation yields stable welding pass rate. After commissioning, all original production pain points are fully resolved. Timely, professional and thoughtful after‑sales service wins high customer recognition.

V Haifei Corporate Mission

Meeting customers’ customized welding demands is Haifei’s core mission. We adhere to the philosophy “Create Value for Customers”. Start from your practical requirements: whether you need standalone automatic machines, integrated workstations or complete production lines, please share your welding needs, and Haifei will carry out targeted R&D and customization for you.