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Product Description
| thing | describe |
| Design/Size | According to customer's drawings or samples |
| Material |
Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc. Stainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416 Steel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc. Alloy steel (15Cr, 20Cr, 42CrMo), etc. Brass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc. Copper, bronze, copper, etc. Titanium: TC4 (TiAl6v4, Grade f5) Plastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc. |
| process | CNC machining, turning, milling, stamping, turning, cutting, etc. |
| Delivery time | Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval. |
| Surface treatment | Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting |
| Test equipment | Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer. |
| Quality Management System |
ISO 9001:2015 ISO 13485:2016 |
| application | Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment. |
| File Format | Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS |
| Package | Inner plastic bag, outer standard carton, or as per customer's requirements |
| Shipping | Sea freight, air freight, international express (DHL, FedEx, TNT, UPS). |
| Serve | The professional foreign trade team provides enthusiastic and fast response services. Dimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing RoHS report/Salt spray test report/Hardness test report |
Refrigerant Locking Cap (Anti-Theft Type)
Product Overview ✨
This anti-theft refrigerant locking cap is specially designed for refrigeration system pipelines, serving two core purposes: preventing unauthorized refrigerant theft, accidental release, or tampering with the system, while protecting pipeline interfaces from dust, moisture, and contaminants to ensure stable operation of refrigeration equipment.
- Material & Finish: Made of lightweight, high-strength aluminum alloy with clear anodized surface treatment. Custom color options (such as silver, pink, green, etc.) are available to meet aesthetic and corrosion resistance requirements.
- Structural Features: Unique keyhole-shaped anti-theft opening, which can only be operated with a dedicated tool, effectively preventing disassembly by common tools. Clear surface markings ensure easy identification of product purpose and compliance information.
- Application Scenarios: Widely used in commercial air conditioners, refrigeration units, industrial refrigeration systems, and other scenarios, acting as a critical precision component for anti-theft protection in high-end refrigeration systems.
Manufacturing Process (Cold Extrusion + Precision Machining) 🛠️
As a custom precision machining factory, we adopt a cold extrusion + precision CNC machining hybrid process to ensure high accuracy, material efficiency, and production scalability:
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Raw Material PreparationSelect qualified aluminum alloy bar stock, conduct incoming material inspection to ensure material purity and mechanical properties meet industry standards.
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Cold Extrusion Preforming
- Cut bar stock to specified length, then anneal to soften the material for improved formability.
- Load the prepared blank into a custom cold extrusion die, and form the main body contour and basic inner hole in one high-pressure operation, achieving near-net-shape production and significantly reducing subsequent machining allowance.
- This process refines the material grain structure, enhancing product strength and deformation resistance, while minimizing material waste compared to pure turning.
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Precision CNC Machining
- Finish the outer contour and end faces of the cold-extruded blank to meet tight dimensional and geometric tolerances.
- Use 5-axis CNC machining or custom jigs to precisely form the anti-theft keyhole opening, the core step to realize the anti-theft function.
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Deburring & Surface Treatment
- Remove all machining burrs via tumble deburring to ensure smooth edges.
- Apply clear anodizing to form a uniform, wear-resistant oxide film, improving corrosion resistance and visual appeal.
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Marking StampingUse high-precision stamping equipment to emboss product identification at the designated position, ensuring clear, durable markings that resist wear.
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Final Inspection & PackagingConduct dimensional and functional verification to confirm product accuracy and anti-theft performance. Clean and package each part carefully to avoid scratches or contamination during transportation.
Key Manufacturing Challenges & Solutions 🎯
| Challenge | Technical Difficulty | Our Solution |
|---|---|---|
| Cold Extrusion Forming Accuracy | Incomplete filling, dimensional deviation, or surface cracking during extrusion can affect machining allowance and product strength. | Optimize die design and lubrication system; use finite element analysis (FEA) to simulate extrusion forces and adjust pressure/speed parameters for defect-free forming; precisely control annealing to balance ductility and grain refinement. |
| Anti-Theft Keyhole Precision | Shape, position, and depth errors in the keyhole can prevent compatibility with the dedicated tool, failing the anti-theft function. | Deploy custom jigs and 5-axis precision machining with in-process probing to correct tool paths; validate fit with custom go/no-go gauges post-machining to ensure 100% compatibility. |
| Anodizing Uniformity | Color variation or uneven film thickness, especially in inner holes and corners, can compromise appearance and corrosion resistance. | Refine pre-treatment processes (alkali cleaning, acid pickling) with strict time/concentration control; optimize rack design for uniform current distribution; monitor bath parameters in real time to ensure consistent film thickness and color. |
| Marking Clarity & Product Integrity | Insufficient stamping force leads to wear-prone markings, while excessive force causes deformation in thin-walled sections. | Use high-hardness stamping dies; apply FEA to optimize stamping force and position to avoid deformation; integrate pre-press positioning jigs for accurate, clear embossing. |
| Thin-Wall & Coaxiality Control | Residual stress from cold extrusion can cause deformation during machining, affecting coaxiality and sealing performance. | Add stress-relief aging treatment after cold extrusion; use low-cutting-force tools and optimized tool paths in finishing; employ high-precision fixtures to maintain tight coaxiality tolerances. |
Our Customization Advantages 💡
- Hybrid Process Advantage: The cold extrusion + precision machining combination improves material utilization by over 30% compared to pure turning, delivering higher production efficiency and stronger mechanical properties.
- Customization Flexibility: We can tailor keyhole designs, dimensions, surface treatments, and anti-theft levels to match specific refrigeration system interface requirements.
- Quality Control System: Full traceability from raw material to finished product, with 100% inspection of critical processes to guarantee consistent anti-theft and protective performance.
- Cost & Lead Time Optimization: Leveraging mature cold extrusion and precision machining expertise, we offer competitive pricing and flexible delivery schedules without compromising quality.
Tel: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp: +86 187 5714 8656
Website: https://www.cncliq.com/