Manufacturing process of copper foil

Copper foil is a thin sheet of copper used in insulating materials, electronic components and decorations. Copper foil is widely used for its good electrical and thermal conductivity and corrosion resistance. The following is the manufacturing process of copper foil.

The first step is to select copper plates: the first step in making copper foil is to select raw materials, and high-quality copper is the key to producing high-quality copper foil. These copper materials must be carefully screened and tested to ensure that the copper plates are of acceptable quality.

The second step is to plan the copper plate: the selected copper plate should be surface treated, put it on the bottom of the composite material machine, adjust the height of the cutter, and plan the uneven part to form a flat surface.

The third step is to clean the copper plate: cleaning the copper plate is an important step in the manufacture of copper foil. In this step, use a professional cleaner to remove dirt and oxides from the surface of the copper plate.

The fourth step is to stretch the copper plate: Next, the copper plate needs to be processed by a stretching machine. During the stretching process, the copper sheet is passed over a wheel, making it longer without losing its width, until it reaches the desired thickness.

The fifth step, annealing and flattening: The next step in the copper foil manufacturing process is to place the copper foil in a high-temperature furnace for annealing. In this process, the copper foil is heated to a fairly high temperature to increase its flexibility. After annealing, the copper foil goes through a leveling machine to fine-tune any unevenness on the top or bottom of the sheet.

Step 6, Cutting the Copper Foil: After the copper foil has been annealed and flattened, it can now be cut to the desired size. Cutting copper foil can use advanced machines such as laser cutting machines or programmable CNC cutting machines for high-precision, high-efficiency production.

The seventh step is to inspect the quality: it is very necessary to inspect the quality of the copper foil. There is an electronic testing device for testing the conductivity, hardness, flexibility, etc. of the copper foil. If the copper foil does not meet the standard, it will be sorted to ensure that the end user gets a product that meets the standard.

The above is the production process of copper foil. This process requires advanced production equipment and professional technology, and finally produces high-quality copper foil materials, which are widely used in high-tech electrical appliances, decorations, electronics and construction fields.