In-Depth Comparative Analysis of Two Manufacturing Processes for the Same Stainless Steel Vacuum Flask (Process Selection Chapter)

"Every cup tells a story, every life carries warmth." Hello everyone, welcome to "Dong Dong's Cup Talk" At recent trade shows, many visitors consistently asked the same question: What are the differences between tube-drawing and deep-drawing processes for manufacturing identical vacuum flasks? Why are tube-drawn products more expensive? http://www.umbottle.com/ProductsDetail-VB-10500.htmlToday, we'll examine the key differences between these two manufacturing processes for the same stainless steel vacuum flask. Given the extensive content, we'll present this in multiple installments.

To provide concrete understanding, we'll analyze a standard cylindrical stainless steel vacuum flask (350ml capacity, 70mm diameter, 180mm height) as a case study. We'll conduct separate analyses of the laser-welded tube-drawing process versus traditional multi-stage deep-drawing, incorporating real-world production challenges and solutions. http://www.umbottle.com/ProductsDetail-VB-10500.htmlThese views represent my personal perspective - please feel free to point out any inaccuracies via private message or comments. Let's learn and discuss together.

Process Selection Decision Tree

Shape Complexity:

Simple rotational bodies → Deep-drawing preferred

Multi-plane/curved surfaces → Welding process required

Material Thickness:

≤0.6mm → Tube-drawing more economical

≥0.8mm → Deep-drawing more reliable

Surface Finish Requirements:

High mirror polish →http://www.umbottle.com/ProductsDetail-VB-10500.htmlPrioritize deep-drawing (avoids weld treatment)

Matte/coated finishes → Welding process acceptable

Vacuum Retention:

>72 hours → Must use deep-drawing

<48 hours → Welding process permissible

Current industry data shows that for specialty-shaped flasks with monthly production exceeding 30,000 units, laser-welded tube-drawing offers 14% lower overall costs compared to deep-drawing. With advancements in automated welding technology, manual labor involvement has decreased from 45% in 2017 to just 19% in 2024. http://www.umbottle.com/ProductsDetail-VB-10500.htmlWe recommend conducting process feasibility verification during early product development to avoid systemic risks during mass production.