Tinned copper tape is a kind of metal tape with tin coated on the surface of copper tape, which has good electrical conductivity and corrosion resistance. Its continuity and adhesion are important indicators that affect its quality and performance.
Continuity: The continuity of tin-coated copper tape refers to the uniformity and integrity of the tin layer on the surface of the copper tape. Good continuity can ensure that the tin layer in the use of the process does not flake and fracture, thus ensuring that the electrical conductivity and corrosion resistance of the copper tape. Evaluation of continuity can be carried out by visual inspection, microscopic observation and chemical analysis.
Adhesion: The adhesion of tinned copper tape refers to the bonding strength between the tin layer and the copper tape. Good adhesion can ensure that the tin layer is not easy to peel off or fall off in the process of use, so as to ensure the electrical conductivity and corrosion resistance of the copper tape. Adhesion can be evaluated by tensile force test, peeling test and scratching test.
In order to ensure the continuity and adhesion of tinned copper tape, the following points need to be noted during the manufacturing process:
Pre-treatment: Before tin-plating, the surface of the copper tape needs to be properly pre-treated, such as cleaning, degreasing and pickling, in order to remove surface contaminants and oxides and to improve the bonding strength between the tin layer and the copper tape.
Tin plating process: the tin plating process needs to control the temperature, concentration and pH value of the plating solution and other parameters to ensure the uniformity and quality of the tin layer. At the same time, it is also necessary to control the tin plating time and current density and other factors to ensure the bonding strength between the tin layer and the copper tape.
Inspection and quality control: The continuity and adhesion of tinned copper tape need to be inspected regularly during the production process, so as to find and solve problems in time and take appropriate quality control measures to ensure that the product meets the requirements.
In short, the continuity and adhesion of tinned copper tape is an important indicator of its quality and performance, which needs to be properly pre-treated and controlled during the manufacturing process to ensure the bonding strength and uniformity between the tin layer and the copper tape.
