In hydraulic systems, the cylinder barrel is the backbone of performance. Its internal surface quality directly impacts seal longevity, friction reduction, and operational efficiency. At DATONG HYDRAULIC, we elevate cylinder barrel manufacturing to an art form through our advanced skiving and burnishing process, delivering unmatched precision and durability for demanding applications.
Why Skiving and Burnishing Matter
Traditional honing or boring methods often fall short in achieving the ultra-smooth, hardened surfaces required for modern hydraulic systems. Our skiving and burnishing process combines two critical steps to overcome these limitations:
Skiving (Precision Cutting): Removes material to achieve tight dimensional tolerances and prepare the surface for burnishing.
Burnishing (Cold Working): Compresses and smoothens the metal surface without material removal, enhancing hardness and fatigue resistance.
This tandem process ensures cylinder barrels meet the highest standards for:
Surface Finish: Ra ≤ 0.1 µm, minimizing wear on seals and pistons.
Straightness: ≤ 0.02 mm/m, critical for smooth piston movement.
Hardness: Surface hardness increased by 15–20% through work hardening.
Our Proprietary Skiving and Burnishing Process: A Technical Breakdown
1. Precision Skiving: The Foundation of Accuracy
Advanced Tooling: CNC-controlled skiving heads with diamond-tipped inserts ensure consistent material removal (tolerances ±0.01 mm).
Chip Control: Optimized cutting parameters prevent micro-scoring, preserving subsurface integrity.
Multi-Stage Correction: Real-time feedback systems adjust for barrel straightness, achieving roundness ≤ 5 µm.
2. High-Pressure Burnishing: Engineering Perfection
Roller Burnishing Technology: Hydrostatic rollers apply controlled pressure (up to 300 MPa) to eliminate microscopic peaks and valleys.
Subsurface Compression: Creates a residual compressive stress layer (depth: 0.05–0.2 mm), boosting fatigue life by 3–5×.
Mirror Finish: Achieves a near-optical surface finish (Ra 0.04–0.1 µm), reducing friction losses by up to 30%.
3. Integrated Quality Assurance
In-process laser measurement systems monitor diameter, roundness, and surface roughness.
Post-process eddy current testing detects subsurface defects.
100% traceability via barcoded serialization for ISO 9001 compliance.
At DATONG GROUP, we don’t just manufacture cylinder barrels—we engineer hydraulic perfection. Our skiving and burnishing process is backed by over 20years of innovation, client success stories, and a commitment to pushing the boundaries of what’s possible.
Contact us today to request a free sample or discuss your project’s technical requirements. Let us help you build hydraulic systems that outperform and outlast.
