Many customers worry that the effect of the car saw machine is not ideal, in fact, there is no need to worry, the car saw machine is not a case, the technology is very mature and has been practical testing after the industry. This judgment of the section quality of the car saw machine meets the standard, can be based on the following key indicators:
1. Surface Roughness Analysis
- Measurement Method: Linear profilometry (Ra 0.8-3.2μm range)
- Acceptance Threshold:
- Fine cuts: Ra ≤1.6μm (equivalent to 150-400 grit finish)
- Production-grade: Ra ≤3.2μm
- Impact Factors: Blade tooth geometry (12-24 TPI configurations), feed rate (10-30m/min)
2. Kerf Width Consistency to Evaluate Section Quality
| Material Thickness | Allowable Variance | Laser Guidance |
|---|---|---|
| ≤50mm | ±0.15mm | CCD visual system |
| 51-100mm | ±0.20mm | Infrared positioning |
| >100mm | ±0.25mm | Pneumatic alignment |
Critical Application: Ensure minimal ID deviation (<0.5%) in spiral-wound cores
3. Perpendicularity Control
- Technical Basis: Laser beam divergence compensation (M² ≤1.3)
- Measurement:
- 90° ±0.5° (grade AA precision)
- 90° ±1.0° (standard production)
- Calibration Protocol: Hourly verification with digital angle cube
4. Linear Stability Assurance to Evaluate Section Quality
- Feed Speed Optimization:
Spool Diameter Base Speed Terminal Phase Adjustment Φ600mm 25m/min ↓18m/min final 500mm Φ800mm 20m/min ↓14m/min final 500mm Φ1000mm 15m/min ↓10m/min final 500mm
Effect: Eliminates ≥80% sheet wave distortion
5. Dimensional Accuracy Verification
- Tolerance Class Verification (ISO 2768-mK):
- Length: ±0.1mm/m
- Angularity: ±15′ arc
- Statistical Process Control:
- Cpk ≥1.33 (4σ process capability)
- 100% laser scan sampling on first article
6. Surface Integrity Inspection to Evaluate Section Quality
- Defect Classification (EN 10204 3.1):
Defect Type Acceptance Criteria Measurement Tool Fiber tear <0.2mm depth 20× digital microscope Edge burr ≤0.05mm height Surface contour gauge Compression marks No visible indentation 50-lux oblique illumination
Corrective Action Workflow
- Immediate Adjustment Protocol:
- Blade tilt correction (0.02° resolution)
- Tension system recalibration (50-200N gradient)
- Preventive Maintenance:
- Weekly blade edge angle verification (25°±2° primary bevel)
- Monthly linear guide cleaning (VG32 grease replenishment)
This evaluation system ensures compliance with global paper converting requirements while maintaining ≤0.8% scrap rate in high-speed production (120 cuts/hr). For dispute resolution, third-party verification via ISO/IEC 17025 accredited labs is recommended.