The processing methods of stainless steel thermos include welding stretching process and water swelling stretching process. Most of the stainless steel thermos processing of Guangdong thermos manufacturers use welding stretching process, and most of the stainless steel thermos processing of Zhejiang thermos manufacturers use water swelling stretching process. It is understood that diobao can produce stainless steel thermos processing with the above two processes at the same time.
The water swelling and stretching process for the processing of stainless steel thermos bottle is produced and processed by welding stainless steel pipe into stainless steel pipe with pipe welding machine as the main raw material. The approximate production and processing process flow chart is as follows:
- Processing flow of outer bladder
Welded pipe of outer liner body – pipe cutting – bulging – segmentation – bulging – rolling middle angle – bottom shrinking – bottom cutting – reinforcement – flat upper mouth – bottom flushing – flat bottom mouth – cleaning and drying – Inspection and pit knocking – qualified outer liner body
- Processing process of inner tank body (there are two processes, one is sensory process, and the other is stamping, but stamping has great limitations)
Inner tank body welding pipe – cutting pipe – flat pipe – bulging – rolling upper corner – flat upper mouth – flat bottom mouth – rolling thread – cleaning and drying – Inspection and pit knocking – butt welding – water test and leak detection – drying – qualified inner tank body
- Exhaust bottom processing flow
Exhaust bottom cutting – punching disc – disc stretching – trimming – Cleaning – drying – Welding getter
- Processing flow of liner bottom
Liner bottom cutting – disc punching – disc stretching – trimming – Cleaning – drying
- Processing flow of outer liner bottom
Outer liner bottom cutting – disc punching – disc stretching – trimming – Cleaning – drying
- Assembly process of outer body and inner body
Inner tank body and inner tank bottom welding – seam pressing – pot mouth – welded junction – pressure exhaust bottom – Welding exhaust bottom – Inspection welded junction welding bottom – vacuum pumping – temperature measurement – sand blasting – electrolysis – polishing – temperature measurement – Inspection polishing – temperature measurement – pressing outer bottom – Painting – silk screen printing – packaging – finished product warehousing