Automatic Snap Band Welding Machine – High-Speed Rivet-Free Welding for Stainless Steel Bands and Sealing Rings

Cleaner, Stronger, and More Durable Welds – Across Multiple Industries

The World’s First Fully Automated Snap Band Welding Line

The KABORY Fully Automatic Snap Band Welding Machine is the world’s first high-speed, rivet-free welding solution for stainless steel bands, sealing rings, and industrial connectors. Unlike traditional riveting, our four-point resistance welding delivers metallurgical-strength joints that exceed the base material, ensuring long-term durability under vibration, high temperatures, and corrosive environments. With a stable output of 8–10 pieces per minute and minimal maintenance, this system reduces labor, eliminates consumables, and guarantees cleaner, stronger, and more consistent results across multiple industries.

Why Connection Reliability Matters

In sealing systems—whether in a baghouse filter, a flexible connector, or other industrial sealing applications—the snap band must withstand:

• Heavy loads and vibration cycles
• Harsh environments (temperature, corrosion, dust, or pressure)
• Continuous operation without loosening or leaking

Once the connection fails, the consequences include dust leakage, production downtime, and costly maintenance.
That is why structural strength and reliability of the snap band connection are critical performance and safety factors.

World’s First — KABORY’s Fully Automated Welding Technology

After years of refinement and real-world testing, KABORY successfully applied four-point resistance welding technology to stainless steel snap bands and sealing rings, enabling industrial-scale, stable mass production.

• High Efficiency: 8–10 pieces/minute (~2,800 pieces per shift)
• High Reliability: Welding strength ≥ base material; fatigue life far beyond riveting
• Cross-Industry Compatibility: Suitable for filter bags, BFM-style connectors, high-temperature and corrosive sealing rings

Why Upgrade from Riveting to Welding?

Inherent Weaknesses of Riveting

• Stress Concentration: Drilling weakens steel, leading to cracks and early failure
• Loosening Over Time: Rivets loosen under vibration and pulse cycles
• Inconsistent Quality: Manual or semi-auto processes vary from batch to batch
• Invisible Defects: Loosening often cannot be detected visually

Issues with Automatic Riveting Machines

• Complex Design: 70–80 sensors/actuators; frequent failures = downtime
• High Maintenance: Frequent calibration and part replacement → higher costs
• Limited Stability: Rivet and hole variations compromise speed and quality

Engineering Advantages of Welding

• No Punch → Eliminates holes and stress points
• Metallurgical Bond → Weld strength equals or exceeds base material
• Traceable Quality → Online monitoring of current/voltage/energy
• No Consumables → Eliminates rivets, reduces changeover time
• Superior Performance → Ideal for high-temperature/corrosive environments
• Cleaner Appearance & Sealing → Smooth finish, airtight joints

Technical Specifications

Parameter	Specification
Weld Diameters	90–220 mm, 90–300 mm (custom sizes available)
Weld Thickness	0.20–0.450 mm
Steel Band Width	25–30 mm
Edge Alignment Accuracy	±0.2 mm
Production Speed	8 pieces per minute (stable)
Welding Points	4-point resistance welds per ring
Voltage	Three-phase, 380–480 V, 50 Hz
Power Consumption	Approx. 8 kW
Air Pressure Requirement	0.5–0.7 MPa
Welding Technology	Medium Frequency Direct Current (MFDC) Welder
Control System	PLC-based automatic control
Operation Mode	Automatic feeding, positioning, cutting, and welding
Material Compatibility	Stainless steel snap bands
Safety Features	Emergency stop, protective housing

Riveting vs Welding — Snap Band Joint Comparison

Feature / Comparison	Riveting	Welding
Connection Method	Drilling + rivet	Four-point resistance welding
Strength	Limited; prone to rivet pull-out or hole tearing	≥ Base material; failure mode shifts to band itself
Defect Rate & Detectability	High, defects invisible	Low, monitored in real-time
Fatigue Life	Loosens quickly under vibration	Superior fatigue resistance
Sealing / Appearance	Holes, prone to leaks	No holes, airtight, clean finish
Suitable Materials	Standard conditions only	High-temp, corrosive (Aramid, PPS, P84, fiberglass)
Maintenance & Cost	Rivets + tooling = high cost	Simple, low long-term cost
Automation Compatibility	Complex, unstable	Simple, stable, faster cycle

Welding Process for High-Temperature Materials

• Aramid/Nomex® (200 °C) → Stable under repeated pulse cleaning
• PPS (corrosive incineration gases) → Superior sealing and fatigue life
• P84 Polyimide (260 °C) → High structural strength at extreme temps
• Fiberglass (brittleness) → Avoids cracking from drilled holes

Snap Band Connection by Working Condition

Working Condition	Recommended Connection	Description
Standard temperature ≤120 °C	Riveting possible	Low cost for non-demanding use
Medium temperature ≤160 °C	Riveting/Welding	Riveting works, welding improves stability
High-temp filter media (Aramid, PPS, P84)	Welding preferred	Riveting loosens, welding remains stable
Fiberglass filter bags	Welding preferred	Prevents hole-induced cracking
Corrosive gas / chemical incineration	Welding essential	Better sealing and corrosion resistance
Long lifespan / reduced downtime	Welding	Weld strength ≥ base material, superior fatigue life

Real-World Test Results

Test	Riveting	KABORY Welding
Shear Force (0.40×25 mm steel)	3.2–6.1 kN	6.8 kN
Failure Mode	Rivet pull-out / hole tear	Base material rupture (weld intact)
Visual Defects	Often invisible	Real-time monitoring (current/voltage)

✔ Conclusion: Weld strength exceeds base material. No holes = no cracks, no fatigue failures.

Fully Automated Production Workflow

1. Automatic Feeding

2. Fixed-Length Cutting

3. Band Forming

4. 4-Point Resistance Welding

5. Output Counting & Stacking

• ⚙ High-Speed: 8–10 pieces/min

• 👤 Low Labor: 1 operator manages multiple lines

• 🧯 Low Maintenance: Simple structure, fewer points of failure

• 📦 High Volume: ~2,800 pieces per 8-hour shift

Summary

• Riveting still dominates the industry, but it suffers from stress points, loosening, and hidden defects.
• Welding delivers stronger joints, longer fatigue life, superior sealing, and lower costs — the clear upgrade path.
• KABORY leads the way as the world’s first company to mass-produce fully automatic snap band welding systems, validated by years of industrial field data.

Your Benefits

• ✅ No Rivets: Eliminates consumables and tooling costs

• ✅ No Holes: Stronger structure with no drilled stress points

• ✅ No Rework: Welded joints are air-tight, clean, and stable

• ✅ Cleaner Surface: No burrs or scratches; ideal for sanitary or visible applications

• ✅ Universal Fit: Suitable for filter bags, flexible connectors, and custom sealing rings

• ✅ Higher Output: Up to 2,800 pieces per 8-hour shift

• ✅ One Operator: Manages multiple machines with minimal training

Your Next Step

Upgrade your snap band production today.
Deliver stronger, cleaner, and more reliable sealing rings — without rivets.
🔧 Contact KABORY for a technical consultation and machine demo.