SGPGB1000 Edge Rounding Machine – The Key to Reliable Coating in EV Battery Tray Manufacturing

Why Edge Quality Is Critical in EV Battery Tray Coating

When coating fails, the problem usually starts at the edge.

In EV battery trays, coatings must ensure not only aesthetic appeal but corrosion resistance, sealing performance, and long-term reliability under thermal and mechanical stress. However, sharp or inconsistent edges often lead to:

• Micro-cracks in powder coating

• Peeling under vibration

• Seal failure in waterproof enclosures

Real Case:
An EV battery tray supplier faced a 12% reject rate due to paint peeling. Manual deburring caused uneven edges and inconsistent results.

How SGPGB1000 Solves the Coating Problem

JONSEN's SGPGB1000 automated finishing system offers a single-pass solution combining:

• ✅ Abrasive belt grinding: removes bulk burrs from laser-cut or stamped parts

• ✅ Planetary brush system: creates uniform, consistent R0.2–R0.5 edge radius

• ✅ Polishing unit: prepares surface for powder coating or electro-deposition

Key Insight: Edge rounding isn’t just cosmetic — it’s the foundation of downstream coating reliability.

Results from Real-World Applications

After switching to SGPGB1000, the supplier achieved:

• ✔ Reject rate reduced from 12% to under 2%

• ✔ Coating adhesion improved by 30%

• ✔ Labor hours cut by 50%, reducing safety risks

• ✔ Passed Tier 1 OEM edge & Ra roughness quality audits

Why Manual Deburring Fails in Critical Applications

The Bigger Picture: What’s at Stake for EV & Industrial Manufacturers

• Sharp edges crack coatings → expose substrate → lead to corrosion and short circuits

• Unrounded edges prevent proper sealing strip bonding → water/dust ingress

• Poor consistency leads to OEM audit failures and warranty returns

• Manual methods are unsustainable in high-volume or quality-sensitive production

From Selling Machines to Delivering Solutions

At JONSEN, we help you move from “equipment purchase” to “process control.”

Consistency & Traceability

Our PLC-controlled system stores standard recipes for each part type, ensuring OEM-level repeatability.

Automation-Ready

SGPGB1000 supports robotic loading/unloading and integration into automated production lines.

ROI Focus

Our customers achieve ROI in 6–12 months, by reducing warranty costs, labor dependence, and increasing throughput.

Use Cases by Industry

• EV & Automotive: Battery trays, structural brackets, sealing frames

• Commercial Vehicles & Rail: Chassis parts, doors, step panels

• Heavy Equipment: Machine covers, guards, controller enclosures

• Electrical Cabinets & Enclosures: Powder-coated boxes, sealed panels

• Appliance & Sheet Metal Products: Oven backs, stainless exteriors

Key Questions Buyers Ask (and We Answer)

How does edge rounding improve sealing performance?
It ensures gasket adhesion by removing coating cracks near corners, essential for IP-rated enclosures.

What if our parts have both sharp corners and protective films?
SGPGB1000 offers optional film protection modules, ensuring safe deburring without surface damage.

Can we maintain consistent results across 3 shifts or multiple factories?
Yes — recipes can be cloned via PLC & stored digitally for cross-site standardization.

Conclusion: Your Edges Determine Your Reliability

✅ Finishing is no longer optional — it’s the foundation of quality assurance, brand reputation, and cost control in modern manufacturing.

Want to see results in action?
Contact us to book a live or remote demo using your actual parts, and receive a surface finish evaluation report.