What is Copper Tape?

Copper tape is a metal component. The product specifications are copper tape products in various states of 0.1 3 × 50 250mm. It is mainly used for the production of electrical components, lamp caps, battery caps, buttons, seals, and connectors. , Thermal and corrosion resistant equipment. Such as electrical components, switches, gaskets, gaskets, electric vacuum devices, radiators, conductive base materials and automotive water tanks, heat sinks, cylinders and other components.

Copper strip

After understanding and familiarizing myself with the copper strip production workshop for a while, I made the following summary for reference. In the summary, the production workshop is divided into the following six areas according to the production process:

Copper tape (5 photos)

Copper strip furnace area

According to the predetermined production goals, the furnace master adds unequal amounts of zinc blocks to the waste copper materials to produce different specifications of copper raw materials.

Among them, the market value of zinc materials is 20,000-25,000 yuan / ton. The current capacity of the copper smelting furnace in our workshop is about 2 tons. Based on 130 kilograms of copper strips, 0.4 tons of waste residue must be removed from the furnace, and about 8-9 pieces of complete copper strips can be made in one operation. The copper smelting furnace was opened every two hours, and two thumb-sized copper blocks were obtained and sent to the laboratory for further analysis of copper purity. Based on the purity analysis results and predetermined copper strip purity control values, the furnace master added Corresponding weight of copper and zinc, so that you can produce the required qualified copper bar.

Copper strip laboratory

Laboratory:

In order to ensure that a finished product that is both qualified and economically profitable is produced, the accuracy of the test results is even more important. The responsibility of the laboratory is to quickly and accurately tell the furnace master the results of the test based on the copper blocks submitted for inspection. At present, the purity of copper products in our factory is controlled between 60.02-60.08, and according to my statistics, the purity of copper materials submitted for inspection each time is about 60.9-62.20, and the results are satisfactory.

However, it is worth noting that an episode occurred during my understanding of the laboratory process. The furnace just opened that day, and the shift technician found that one of the starch reagents had precipitated and deteriorated. This would cause the laboratory work to continue, and the consequences would be It is impossible to discharge the copper bars in a timely manner, resulting in direct power consumption and loss of time for no reason. Fortunately, the laboratory technician responded fast enough. It took about 40 minutes under the effect of cold air conditioning to rush out the starch reagent before the copper block was sent for inspection. It was found that the starch reagent deteriorated at higher room temperature after six days. During this period, the laboratory technician did not check the various reagents in advance, and he was inescapable to prepare for production. This incident gives us a wake-up call. Our laboratory technicians must regularly check and dispense a variety of reagents in advance, so as to avoid recurrence of reagents or insufficient dosage, which will cause production delays.

Copper strip cut-off area

Cut-off area:

The complete copper bar is pulled by a hoisting rope, placed on a dedicated cutting table, and then cut by a cutting wheel saw. Each piece of copper is 100cm × 9.2cm × 18.5cm in length and width, and weighs about 130 kg. The copper strip washing machine smoothes the uneven surface of the copper strip surface, which is conducive to the flatness and smoothness of the surface of the copper strip processed later. At present, the surface of the produced copper bar is not ideal, so the thickness of 2 mm is cut on both sides. If the copper bar still has protrusions after washing, it can be polished with a grinding wheel.

Copper strip hot rolled zone

Hot rolled area:

The cut copper bar is heated at a high temperature of 1000 ° C, and then over-rolled, and then rolled into a copper strip with a thickness of about 2.3 cm. During the test, I used a stopwatch to test the time when the copper bar was rolled into a rough copper strip. The first time was 01:47, the second time was 01:53, the third time was 01:59, the fourth time was 01:44 The fifth time was 01:52. The average time for each of the above strips is 01:51. This step processes an average of 37 copper strips per hour.

Copper strip washing area

Washing area:

Each copper block is passed through the preliminary rolling step. Due to the presence of surface impurities, in order to avoid affecting the quality of the finished product, it must be passed through a sealing furnace and then washed with water. The washing area is divided into two pools according to the difference in acidity. The high concentration is 6-8 degrees, and the low concentration is 3-5 degrees. Among them, the medium red patches on the surface of the copper strip can be washed away by the acid solution of the washing pool, and the dark red patches are removed by the iron hairs during the washing process. The copper strips after this series of treatment methods obviously shine The inherent sheen of copper. During the same rolling process, there are still red patches and red patches, so you need to repeat the washing step. Periodically check the acidity in the pool during washing, and add acid in time to avoid insufficient washing due to too low acid content.

Water washing time: 04:53 for the first time, 04:43 for the second time, 04:58 for the third time, 04:30 for the fourth time, and 04:37 for the fifth time. The average time for each of the above strips is 04:40. This step processes an average of 13 copper strips per hour.

Copper strip rolling area

Rolling plate area

The rolling plate area is divided into 180 initial rolls and 110 intermediate rolls according to wheel rolls. According to the different sizes of various wheel rolls, the copper strips that have been hot-rolled and fired in a sealing furnace are processed from rough to fine through the above two steps. Similarly, I have recorded the time spent in each step:

Initial rolling time: 05:37 for the first time, 05:53 for the second time, 05:59 for the third time, 05:14 for the fourth time and 05:22 for the fifth time. The average time for each of the above strips is 05:37. This step processes an average of 12 copper strips per hour.