1. Material selection and proportioning

The main materials for the manufacture of carbon brushes are toner, ink, polystyrene resin, graphite, copper powder, etc., and the selection of materials should be carried out according to the use and specifications of the product. Among them, the selection of toner is the key to the manufacture of carbon brushes, and high-purity toner with moderate particle size should be selected. In terms of proportioning, auxiliary materials such as lubricants and adhesives should be added appropriately according to different process parameters to ensure the performance and quality of carbon brushes.

2. Molding

The molding of carbon brushes is divided into two methods: compression molding and injection molding. Pressing molding needs to be carried out by a special pressing machine, which is suitable for manufacturing smaller specifications of carbon brushes; Injection molding requires the production of molding molds, and the material is heated and shaped by an injection molding machine, which is suitable for the manufacture of large-size carbon brushes. In the molding process, mold setting, powder filling, pressing and other operations should be carried out according to the process requirements and product specifications to ensure the quality of the finished product.

3. Processing

After forming, the carbon brush also needs to be post-processed, including processing, grinding, drying and other links. Among them, processing and grinding are mainly to remove burrs and uneven parts generated during the production process, and drying is to evaporate the water inside the carbon brush to prevent product deformation or oxidation.

4. Precautions

1. The selection and ratio of materials should be scientific and reasonable, so as not to affect the quality of products;

2. When molding, the mold and operating parameters should be appropriately adjusted according to the specifications and models to ensure that the product size and quality meet the requirements;

3. During the processing process, special attention should be paid to controlling the strength, time and other parameters of processing and grinding to prevent damage to the carbon brush.

In short, the process of manufacturing carbon brushes is very important, and it is necessary to grasp every link in terms of materials, molding and treatment in order to obtain high-quality carbon brush products.