1. CNC Precision Targeted Flushing Solves the Industry-wide Difficulty of Cleaning Intersecting Oil Passages

Unlike ordinary spray cleaning that only cleans outer surfaces while contaminants remain trapped inside oil passages, the 6-axis CNC system follows preset coordinates based on the 3D drawings of crankshafts. Nozzles automatically extend into all inclined, through and branched oil passages. Pulsed high-pressure water jets strip micro burrs and abrasive dust from inner walls, achieving an oil passage cleaning rate of 99.8%. It consistently complies with ISO 16232/VDA 19 standards with no hard particles ≥200μm left, fundamentally eliminating engine bearing seizure and abnormal noise failures.

2. Flexible Compatibility for Multiple Product Types; One-click Switch for 4/6/8-Cylinder Crankshaft Production Lines

The equipment comes with a built-in library of dedicated cleaning programs for all types of crankshafts. Product changeover only requires program recall and simple replacement of V-shaped fixtures, completing model switching within 5 minutes. CNC trajectories support offline programming import for quick adaptation to new crankshaft models. It flexibly meets the mixed production demands of OEMs without repeated manual adjustment of nozzle positions and pressure parameters.

3. Intelligent Zoned High/Low Pressure Control Fully Protects Precision Machined Crankshaft Surfaces

Low-pressure spray is adopted for quenched and precision-machined journal surfaces to avoid erosion, while 30–50 MPa high pressure is applied inside oil passages for powerful deburring. Automatic segmented pressure switching prevents damage to crankshaft surface hardness and dimensional tolerances. No strong acidic or alkaline corrosive chemicals are used throughout the process, leaving ductile iron and quenched steel free from oxidation discoloration and pitting corrosion.

4. Fully Enclosed Unmanned Automatic Operation Greatly Reduces Labor Costs

It seamlessly connects with crankshaft grinding, heat treatment and flaw detection production lines via gantry robots and AGVs to support 24-hour continuous production. The fully enclosed cabin prevents splashing wastewater and dust leakage to improve workshop environment. All process parameters are automatically stored and connect to the factory MES (Manufacturing Execution System), enabling full quality traceability of crankshaft cleaning procedures and satisfying IATF16949 audit requirements.

5. Multi-stage Closed-loop Filtration & Energy-saving Design Cuts Long-term Operating Costs

Four-stage composite filtration continuously separates iron chips and abrasives, extending filter element service life by 3 times. Cleaning fluid circulates and recycles in a closed loop with only 1/5 of the consumption of traditional open spray lines. Variable-frequency high-pressure pumps and waste heat recovery for hot air reduce overall energy consumption by 28%. One single unit replaces 3–5 operators equipped with manual high-pressure spray guns.

6. Flexible Process Combinations for Dual-process Matching (Pre-cleaning + Final Precision Cleaning)

1. Standalone CNC high-pressure equipment: Applied for pre-cleaning and deburring after machining to remove most iron chips and burrs inside oil passages.

2. Combined production line solution: CNC high-pressure pre-cleaning followed by Bakr vacuum hydrocarbon precision final cleaning. Large particles are flushed away first, then vacuum solvent treatment delivers micron-level cleanliness and streak-free drying to fully meet OEM warehousing standards for assembly.

3. Independent CNC high-pressure drying line: Suitable for remanufactured crankshaft renovation and mass rough blank pre-treatment.