Vacuum tin coating and anti-rust process for soldered seam of tinplate can
By using laser microtextured boundary bands and vacuum tin plating in the weld seam area of the steel strip, the stability problem of the local tin-plated functional area of the weld strip was solved, achieving clear boundary control between the welding functional area and the non-functional area and stable adhesion of the coating, thus improving the overall performance of the steel strip for can making.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- QINGDAO JINTE BEER NEW TECH CO LTD
- Filing Date
- 2026-04-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing can-making processes struggle to accurately form and maintain stable local tin-plated functional areas in weld strips during continuous processing. This results in a lack of clear and controllable termination boundaries between the functional and non-functional areas, and the local tin plating layer is prone to loss of control during heat treatment, affecting adhesion stability and weldability.
The process employs a combination of laser microtextured boundary bands and vacuum tin plating. Laser microtextured boundary bands are formed on both sides of a predetermined weld strip area on a steel strip. The strip is then cleaned with a nitrogen ion beam. Subsequently, tin vapor is deposited in a vacuum chamber through a mask, followed by heat treatment and rapid cooling of a localized pure tin plating layer to form an iron-tin interface layer and edge termination morphology.
The localized construction of the tin-plating functional area in the weld strip was achieved, ensuring the stability of the plating edge and the weldability, and improving the overall application performance of the steel strip for can making.
Smart Images
Figure CN122406152A_ABST