Color change program for thermal constant flow channel

Color change program for thermal constant flow channel

1. Raise the mold temperature above 15 degrees Celsius above the process temperature

2. Increase the temperature of the splitter plate and hot nozzle by 50 degrees Celsius respectively

3. Injection molding machine melt cylinder backward

4. Automatically clean the injection molding machine barrel with cleaning material

5. Manually clean and use the colorless standard raw materials required for the next production

6. Inject again, cycle production 6 times

7. Reduce the temperature of the splitter plate and hot nozzle by 20 degrees Celsius - injection molding once

8. Reduce the temperature of the splitter plate and hot nozzle by 20 degrees Celsius again - injection molding once

9. Reduce the temperature of the splitter plate and hot nozzle by 10 degrees Celsius again - injection molding once

10. Reduce mold temperature by 15 degrees Celsius

What are the working principles and scope of application of vacuum drying boxes?

Introduction to Vacuum Drying Oven

The vacuum drying oven is designed specifically for drying heat sensitive, easily decomposable, and oxidizable substances, capable of injecting inert gases into the interior, especially for fast drying of complex components.

The vacuum drying oven is an ancient drying device, which is divided into several layers by a heating plate. Fill the heating plate with hot water or low-pressure steam as the heating medium, place the material tray for drying on the heating plate, close the box door, and use a vacuum pump to create a vacuum inside the box. The heating plate heats the drug to the specified temperature in the circulating flow of the heating medium, and the water begins to evaporate and gradually withdraws with vacuum pumping. This device is easy to control and can condense and recover evaporated solvents. During the drying process, drugs are not easily contaminated and can be used for drug drying, packaging sterilization, and heat treatment. In the 1980s, this equipment was commonly used as the main dryer in the raw material pharmaceutical industry. However, due to the difficulty of online cleaning and sterilization of the material tray, the drying speed was slow, the labor intensity of workers was high, and in order to achieve drug uniformity, the drying process had to be mixed through a powder mixing device. Nowadays, it is rarely used in large-scale production of raw material pharmaceuticals and is mostly used for medium and small scale trial production or packaging material heat treatment of Shouli air compressor accessories.

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