Metal welding leader

Language

Home page

Project Introduction: Exhaust Ring Projection Welding Machine

Aug 13,2026

The automotive exhaust outlet is a critical sealing component of the whole exhaust system. Traditional welding processes feature discontinuous welds, scattered heat input and inconsistent forming, which easily lead to uneven fusion, cold solder joints and workpiece deformation. During vehicle operation, such defects cause tail gas leakage, louder exhaust noise and corrosion cracking of weld seams. Haifei exhaust ring projection welding machine is custom-developed for annular exhaust structures. It adopts integral synchronous full-circle welding technology to produce continuous, uniform, sturdy and low-deformation welds, thoroughly solving various drawbacks of conventional welding and fitting mass production of automotive exhaust parts.

I Customer Background & Production Pain Points

A manufacturer specializes in processing chassis components including automotive exhaust ports and exhaust connecting end caps.

Deficiencies of the original welding process:

1.Traditional segmented welding creates many breakpoints; incomplete fusion and micro-pores easily form at joints, leading to leakage and weld cracking under high temperature.

2.Conventional welding delivers excessive, uneven heat input, causing warpage and flatness deviation of thin-walled parts.

3.Unstable pressure and energy output of old machines result in inconsistent penetration width and weak local weld strength.

4.Lack of parameter management; welding quality fully relies on operator experience with large batch fluctuation and untraceable process data.

II Customer Requirements

1.Adopt integrated full-circle welding to eliminate joint gaps and welding defects, improving sealing and durability.

2.Optimize low-heat-input process to control heat-affected zones and reduce warpage & deformation.

3.Equip closed-loop pressure stabilization system for uniform penetration and neat full-circle welds.

4.Support storable, traceable process data and stable long-hour machine operation.

III Custom R&D Solutions

The dedicated R&D team repeatedly adjusted parameters to overcome annular welding difficulties of exhaust parts:

1.Process Verification: Conduct batches of annular welding tests on exhaust components of various sizes.

2.Equipment Selection: Specialized exhaust ring projection welder with balanced, stable pressure & energy output and uniform weld penetration.

3.Fixture Design: Custom exclusive positioning tooling to lock processing benchmarks and reduce alignment & assembly gaps.

4.Core Advantages

Stable Sealing: Uniform welds, zero air leakage

Low Deformation: Balanced heat input, easy assembly

Wide Versatility: Quick model switching, simple process control

IV Delivery & After-sales Feedback

Pre-acceptance and on-site machine inspection completed. Continuous trial runs maintain stable welding pass rate. After commissioning, all original production pain points are fully resolved. Customers speak highly of timely, professional and thoughtful after-sales service.

V Haifei Corporate Mission

Meeting customers’ customized welding demands is Haifei’s core mission. We adhere to the tenet "Create Value for Customers". No matter you need standalone automatic machines, integrated stations or full production lines, tell us your welding requirements and Haifei will carry out targeted R&D and customization for you