Key Features and Advantages

The High Precision CNC Cut-to-Length Line employs a fully digital length measurement and control system. An encoder continuously monitors strip travel, with PLC-based controls automatically adjusting servo feed rates to maintain programmed lengths. This closed-loop system ensures consistent accuracy across all production runs.In this High Precision CNC Cut-to-Length Line, length tolerance of ±0.5mm per 2 meters is standard, with diagonal tolerance maintained within 1mm—critical for ensuring proper fit during drum body rolling and seaming operations.

Superior Flatness for Quality Seams

The precision leveler is the cornerstone of drum quality. Steel drums require panels thatare free from coil set and residual stress to ensure:

Consistent welding quality along the longitudinal seam

Proper flange formation during flanging operations

Accurate assembly of top and bottom covers

Leak-proof sealing of finished drumsLeveling precision of ≤1.5mm/m² is achieved through the 13-roller leveling configuration, with independent adjustment of entry and exit roll gaps.

 Production Workflow for Steel Drum Manufacturing

Step-by-Step Operation Sequence

Stage 1: Coil Loading

Coil positioned on hydraulic feeding trolley

Coil loaded onto uncoiler mandrel

Mandrel expanded and secured

Outboard support engaged

Stage 2: Strip Threading

Banding removed from coil

Strip fed through pinch rolls

Material passed through 13-roll leveler

Strip guided through deviation correction

Material enters servo sizing machine

Stage 3: Length Programming

Target length entered into PLC system

Cutting quantity and speed confirmed

Test blank produced and measured

Encoder calibration verified

Stage 4: Production Run

Line started at operating speed

Continuous monitoring of:

Strip tracking and alignment

Leveling performance

Shear operation

Stacking quality

First-run inspection confirms quality

Stage 5: Blank Stacking and Transfer

Finished blanks automatically stacked

Stacking alignment verified

Completed packages transferred to downstream operations:

Drum body: Rolling → Welding → Flanging → Beading → Seaming

Covers: Punching → Pre-rolling → Gluing → Hole forming

Complete Steel Drum Production Flow

Coil Input → CTL Line → Body Blank → Rolling → Seam Welding → Flanging → Beading → 

                          ↓

                       Cover Blank → Punching → Pre-rolling → Gluing → 

                          ↓

                       Assembly → Seaming → Leak Testing → Painting → Drying → Finished Drum