High temperature blackening electric heating tube is a type of electric heating tube used for metal surface treatment. Its surface is formed with a protective film through high temperature blackening process, which has anti-corrosion, wear resistance, temperature resistance and other characteristics. It is widely used in industries such as metal surface treatment, chemical industry, food, medicine, etc. The characteristic of high-temperature blackened electric heating tubes is that they can withstand harsh environments such as high temperature, high humidity, and high pressure, and have high thermal efficiency and service life. Its specifications, dimensions, and power can be customized according to different needs.
High temperature blackening electric heating tubes are widely used, as shown in the following examples:
1. Used in metal surface treatment, chemical, food, pharmaceutical and other industries.
2. Used for heating, drying, baking and other processes in industrial production.
3. Used for heating equipment such as electric ovens, rice cookers, and microwaves in household appliances.
The process flow of high-temperature blackening electric heating tube is as follows:
1. Pre cleaning preparation: Clean the surface of the electric heating tube, remove impurities, and ensure the cleanliness and cleanliness of the surface of the electric heating tube.
2. Degreasing treatment: Immerse the electric heating tube in a degreasing night with a pH value of around 13, hold for about 30 minutes, and then treat the surface of the heating tube. Use clean water to remove impurities generated by chemical reactions on the surface, ensuring surface cleanliness.
3. Acid cleaning: After degreasing treatment, there will be alkaline and alkaline substances on the surface of the heating tube, so acidic liquid cleaning is required. Generally, the pH value of the acid solution is about 3, and the immersion time is about 10 minutes. After treatment, clean the electric heating tube with clean water.
4. Blackening treatment: Ensure that the liquid pH value is between 2-4, and the treatment time is about 10 minutes. After the treatment, clean the surface of the heating tube.
5. Drying and oiling: After completing the surface chemical treatment and cleaning of the electric heating tube, it is necessary to dry and remove the surface water. After drying, the electric heating tube is oiled.
