Copper plate and strip production is divided into six major areas, including the furnace area, laboratory, cutting area, hot rolling area, water washing area, and plate rolling area. The production method and process of copper strips are as follows:
The first step: embryo making; according to the predetermined production target, allocate different grades of alloy element composition requirements to obtain different types of copper raw materials, and then use the up-drawing method in the ingot to cast the copper block. The up-drawing method refers to the melting process. The water is directed upward, and the precision is better.
Step 2: Testing; In order to ensure the production of finished products that are both qualified and economically beneficial, the accuracy of the test results is particularly important. The responsibility of the laboratory is to quickly and accurately report the test results to the furnace master based on the copper blocks submitted for inspection.
The third step: cutting; the complete copper bar is pulled by a hanging rope, placed stably on a special cutting table, and then cut by a cutting wheel saw, and then the uneven surface of the copper bar is polished smooth by a copper strip milling machine, so that It is beneficial to the flatness and smoothness of the surface of the copper strip processed later.
Step 4: Hot rolling; after being cut by the cutting table, the copper bars are heated at a high temperature of 1000°C and then hot-rolled into a copper strip with a thickness of about 2.3cm; or cold-rolled into a copper strip with a thickness of about 2.3cm. A copper tape of about 1.3cm.
Step 5: Water washing; after each copper block has undergone the preliminary rolling process, due to the presence of surface impurities, in order to avoid affecting the quality of the finished product, it must go through the sealing furnace again for water washing. The water washing area is divided into two types of pools according to the degree of acidity. The higher concentration is 6-8 degrees, and the lower concentration is 3-5 degrees. Among them, the red patches produced on the surface of copper plates and copper strips can be washed away by the acid in the washing tank, while the dark red patches can be removed by brushing with fine iron hair during washing. The copper strips after this series of treatments are obviously Shine out the inherent luster of copper. There are still red patches during the rolling process, and the water washing step still needs to be done again. During the washing period, you should also pay attention to regularly checking the acidity in the pool and adding acid in time to avoid insufficient washing due to low acid content.
Step 6: Plate rolling; the plate rolling area is divided into 180 rough rolling and 110 mid rolling. According to the different sizes of various rollers, the copper strips that are hot rolled and calcined in the beacon furnace are processed from rough to fine through the above two steps.
