I. Brand & Equipment Overview

Sinobakr (Baker Industrial Equipment Suzhou Co., Ltd.) has focused on industrial precision cleaning for 26 years. As a high-tech, specialized, sophisticated and innovative enterprise, we develop equipment matching European imported cleaning machinery. Our CNC high-pressure deburring washing machine is a dedicated integrated equipment for deburring and precision cleaning specially designed for automotive aluminum die-castings. It combines CNC machining center logic with high-pressure water jet technology, complying with mandatory automotive component cleanliness standards VDA19 and ISO16232 required by vehicle OEMs, and supports full-process treatment of aluminum die-castings for traditional fuel vehicles and new energy three-electric systems.

Full View of Sinobakr CNC High-Pressure Washing Machine

Side View of the Equipment

Core Hardware Specifications (Special Model for Aluminum Die-Castings)

1. High-pressure System: Variable-frequency adjustable high-pressure booster pump with a maximum pressure of 50MPa, equipped with wear-resistant gemstone nozzles. It supports multi-mode water jets including straight spray, 45° inclined spray and 90° side spray to remove burrs deep inside intersecting holes, blind holes and threaded oil galleries.

2. CNC Motion Axes: Standard 3/5-axis linkage with CNC rotary table and telescopic rotary water jets. Self-programmable trajectories enable targeted precise impact on burr roots without any uncleaned blind spots.

3. Integrated Working Chamber: The fully enclosed single chamber integrates high-pressure deburring & washing, multi-stage circulating filtration, deionized water rinsing, hot air drying and oil-water separation. The entire process from feeding to finished dry parts is completed on one machine without intermediate transfer.

4. Water Circulation System: Equipped with three-stage precision filtration and magnetic aluminum scrap collectors, the system recycles 95% of washing water for low water consumption. A built-in oil-water separator automatically separates die-casting release agents and cutting fluids.

5. Intelligent Control System: 10-inch touchscreen storing hundreds of product process programs. Pressure, feed speed and spraying duration can be switched with one click. The system supports MES production line connection and remote maintenance.

6. Safety Protection: Fully enclosed sound-insulated cabin, overpressure protection, emergency stop interlock and anti-corrosion water circuit design for aluminum parts. The whole machine holds CE and UL certifications, suitable for dust-free workshops of vehicle manufacturers.

II. Application Scope of Automotive Aluminum Die-Castings (Core Applications)

Main Scenario: Aluminum Die-Castings for New Energy Vehicles

Motor housings, electric control housings, battery pack water-cooled housings, inverter die-castings, aluminum valve bodies for water/oil pumps, reducer boxes, water-cooled end covers, battery tray structural components

Aluminum Die-Castings for Traditional Fuel Vehicles

Engine cylinder heads / oil sumps, gearbox housings, turbocharger aluminum housings, steering knuckles, hydraulic valve blocks, valve chamber covers, aluminum brake pump castings

Common Processing Pain Points of Aluminum Die-Castings Solved by the Equipment

1. Die-casting flash and soft aluminum burrs on machined intersecting holes / intersecting lines (inner holes cannot be cleaned by manual grinding);

2. Residual aluminum scraps, die-casting sand and accumulated release agents inside blind inner cavities;

3. Cutting fluids and drawing oils adhering to surfaces, causing oil gallery blockages and seal wear after assembly;

4. Water stains, aluminum oxidation and unqualified cleanliness (excessive particulate matter) after washing;

5. Slow product changeover for mixed multi-variety production, high manual grinding costs and workshop dust pollution.

Comparison of Aluminum Parts Before and After Deburring

III. Complete Process Flow of Sinobakr CNC High-Pressure Washing (Standard Process for Aluminum Die-Castings)

Standard Fully Automatic Procedures (Completed in a single enclosed machine, cycle time: 3–8 mins per piece, adjustable according to workpiece size)

1. Positioned Feeding with Tooling FixturesCustom quick-change fixtures clamp aluminum die-cast housings to align oil galleries and intersecting holes with water jet paths. For mass production, robotic arms can be matched for automatic loading and unloading to connect with production lines.

2. CNC Targeted High-Pressure Deburring (Core Process)Pre-stored CNC programs are called up, and 5-axis linked water jets spray evenly along hole passages, parting lines and thread roots with dynamically adjustable pressure ranging from 30 to 50MPa:

• 30–35MPa for thin-walled housings to prevent aluminum deformation;

• 40–50MPa for thick-walled valve bodies and deep intersecting holes to thoroughly break off burrs on intersecting lines;Aluminum scraps and die-casting residues attached to surfaces are flushed off simultaneously.

3. Spray Degreasing with Water-Based Neutral ChemicalsLow-pressure composite spraying adopts special neutral cleaning agents for aluminum parts to dissolve release agents and cutting fluids. No strong alkali is used to corrode aluminum surfaces and avoid whitening oxidation.

4. Multi-Stage Precision Rinsing with Deionized WaterHigh-pressure rinsing with deionized water eliminates residual chemicals to prevent watermarks and white spots, meeting strict automotive cleanliness requirements.

5. Circulating Hot Air DryingClean hot air at 80–120°C blows uniformly across all surfaces to remove water trapped in deep holes and interlayers. Workpieces come out completely dry and free from short-term rust during storage.

6. Automatic Water Circulation PurificationFiltration runs synchronously with processing: magnetic rods collect aluminum scraps → bag filters remove micron particles → oil-water separation. Waste liquid is treated centrally on a regular basis to realize water recycling.

Two Customized Process Options for Selection

Option A: Standalone Single Machine (For small & medium batches, frequent product switching)

Single-chamber CNC high-pressure washing machine with small footprint. Programs for different housings can be recalled with one click, ideal for component suppliers and mixed production of multiple die-cast models.

Option B: Automated Connected Production Line (For mass production lines of vehicle OEMs)

Consists of CNC washing main unit, loading/unloading robotic arms, material storage conveying lines and online cleanliness inspection. It connects to post die-casting and post-CNC machining processes to support 24-hour unattended continuous production.

IV. Core Technical Advantages for Aluminum Die-Castings (Compared with Traditional Processes)

1. Superior deburring effect vs. manual grinding, wire brushing and sandblastingThe non-contact high-pressure water jet causes no tool wear, scratches or thermal deformation, preserving the dimensional accuracy of die-cast parts.It removes burrs inside deep intersecting holes and tiny oil galleries inaccessible by manual work, eliminating risks of assembly jamming and oil gallery blockage caused by residual burrs.Consistent burr removal avoids incomplete cleaning and unstable quality from manual grinding, satisfying OEM sampling inspection standards.

2. Qualified cleanliness complying with strict automotive standardsThe full-process neutral water-based cleaning plus deionized water rinsing controls cavity particulate matter ≤50μm, stably passing VDA19 particle testing and solving rework issues of new energy three-electric housings due to unqualified cleanliness.

3. Flexible production with zero commissioning cost for product changeoverModular stored CNC programs allow model switching between motor housings and gearbox housings simply by recalling programs, paired with quick-change fixtures. Product changeover efficiency is improved by 70% compared with dedicated spray washing lines.

4. Energy-saving & eco-friendly, lowering overall production costs

• Recycled filtered water reduces water consumption to 1/5 of traditional water washing;

• Replaces 3–6 grinding workers and eliminates continuous procurement costs of brushes and grinding heads;

• Fully enclosed cabin prevents dust and chemical volatilization for qualified workshop environment and easy environmental assessment approval;

• Low-energy high-pressure pump consumes less energy per workpiece than hydrocarbon vacuum cleaning.

5. Exclusive anti-corrosion design for aluminum partsAll water circuits, nozzles and chambers are made of 304 stainless steel, matched with special neutral cleaning agents for aluminum. Cleaned workpieces feature bright surfaces free from oxidation, blackening or whitening, with no extra rust prevention process required.

V. Practical Industry Application Case (Typical New Energy Aluminum Die-Casting Project)

Case: Post-Cleaning of New Energy Integrated Die-Cast Motor Housings

Workpiece: Integrated aluminum die-cast motor housing with multi-layer water cooling channels and dozens of threaded intersecting oil galleriesPain Points: Flash on parting lines, aluminum burrs on water channel intersecting lines, residual die-casting release agents; internal water channels cannot be cleaned manually, resulting in persistently unqualified cleanlinessSinobakr Solution: BK-CNC50 5-axis high-pressure deburring washing machine

1. Custom telescopic rotary side spray nozzles for 360° spraying deep inside water cooling channels;

2. 40MPa dynamic high pressure removes burrs on channel intersections while stripping die-casting sand inside passages;

3. Integrated process of neutral chemical spraying, deionized water rinsing and hot air drying.

Application Results: Single-piece cycle time of 4.5 minutes, stable cavity particulate matter ≤30μm, one-time pass of OEM VDA19 inspection. The manual grinding station is eliminated, cutting comprehensive processing cost per piece by 42%.