A complete analysis of the production process of stainless steel thermos cups
As a modern, everyday drinking utensil, thermos flasks are ubiquitous. However, few understand the complex manufacturing process. Even experienced technicians may not be able to fully explain the entire process. This article systematically explains the complete production process of a stainless steel thermos flask, from raw materials to finished product, allowing you to experience this art form that blends traditional craftsmanship with modern technology.
- Shell Precision Machining Process
Raw Material Preparation: Outer Tube Material Collection → Precision Cutting
Forming: Segmented Bulging → Secondary Bulging → Rolling of Center Angles
Bottom Processing: Bottom Shrinkage → Precision Cutting → Rib Reinforcement
Fine Finishing: Top Smoothing → Bottom Stamping → Bottom Smoothing
Cleaning and Quality Inspection: Deep Cleaning → High-Temperature Drying → Strict Inspection (Drilling Test) → Qualified Shell
- Liner Professional Manufacturing Process
Tube Material Preparation: Inner Tube Material Collection → Precision Cutting → Smoothing of Tube Ends
Forming: Bulging → Rolling of Top Angles
Port Processing: Top and Bottom Smoothing → Thread Rolling
Cleaning and Inspection: Deep Cleaning → High-Temperature Drying → Strict Inspection (Knock-Out Test)
Sealing Test: Laser Butt Welding → Hydraulic Leak Testing → Secondary Drying → Qualified Inner Liner
3. Final Assembly and Surface Treatment Process
Assembly Process: Precision Fitting → Laser Welding → Midsole Lamination → Bottom Welding → Solder Spot Inspection
Vacuum Treatment: Getter Spot Welding → High-Vacuum Extraction → Temperature Calibration
Surface Finishing: Electrolytic Polishing → Secondary Temperature Measurement → Polishing Quality Inspection
Exterior Finishing: Outsole Lamination → Multi-Layer Painting → Paint Quality Inspection
Final Processing: Screen Printing → Finished Product Packaging → Quality Inspection → Warehousing
Through these three rigorous process steps and over twenty precision steps, we create a high-quality thermos with excellent thermal insulation performance and a beautiful appearance. Every step embodies the perfect fusion of the inherited spirit of craftsmanship and modern manufacturing technology.
