Production process of brass strip
The production process of brass strip is divided into 6 steps. Every step in the process of operation should be carefully operated to ensure product quality. Brass strip is a very common metal element, which is mainly conductive, heat conducting and corrosion resistant equipment. There are six areas for brass strip production, namely furnace area, laboratory, cutting area, hot rolling area, washing area and plate rolling area.
1. Embryo production:
According to the predetermined production target, different amount of zinc blocks are added into the waste copper material to produce different specifications of copper raw materials.
2. Laboratory test:
In order to ensure the production of both qualified and economic benefits of finished products, the accuracy of test results is very important. The responsibility of the laboratory is to quickly and accurately report the test results to the furnace master according to the copper block submitted for inspection.
3. Cut off:
The complete copper strip is pulled by the sling and placed stably on the special cutting table. Then it is cut by the cutting wheel saw, and the uneven surface of the copper strip is polished by the copper strip washing machine, which is conducive to the flatness and smoothness of the copper strip surface processed in the later stage.
4. Hot rolling:
The cut copper strip is heated at 1000 ℃ and then hot rolled to form a copper strip with a thickness of about 2.3cm.
5. Water washing:
Due to the existence of impurities on the surface of each copper block after blooming, in order to avoid affecting the quality of the finished product, it is necessary to seal the furnace again and then wash it with water. The water washing area is divided into two kinds of pools according to the acidity. The high concentration is 6-8 degrees, and the low concentration is 3-5 degrees. The medium red patches on the surface of copper rod and strip can be washed away by the acid in the washing pool, while the dark red patches can be removed by the iron fine brush during the washing period. After a series of treatment, the copper strip obviously shines out the inherent luster of copper. In the same way, if there are still red patches and red patches during the rolling process, the washing process should be repeated. During water washing, the acidity in the pool should be checked regularly, and acid should be added in time to avoid insufficient water washing due to too low acid content.
6. Plate rolling:
The rolling area is divided into 180 primary rolling and 110 intermediate rolling. According to the different sizes of various rollers, the hot rolled copper strip which has been forged in the sealed furnace is processed from rough to fine through the above two steps.
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