Vacuum flask line surface treatment between welding and final assembly
Introduction: Vacuum flask line surface treatment is easier to understand when welding seam grinding is viewed as one possible step, not a complete line. In vacuum flask manufacturing discussions, the phrase “surface treatment” can be too broad if it is not tied to a real process position. A reader may see a vacuum flask line supplier with welding seam grinding machine content and assume that one machine defines the whole manufacturing route. A better reading is more precise: welding seam grinding may support the transition from welded metal parts toward cleaner edges, refined visible areas, and later assembly-related work, while the exact order still depends on each factory’s product design, welding method, equipment layout, and quality requirements. Flask structure explains why mouth and bottom areas attract post-welding attention A vacuum flask is not just a simple metal cup. Its thermal performance depends on an inner container, an outer shell, and an insulating...