Users, purchasers or producers all know that if the electric heating tube is used for a long time, the electric heating tube will turn black over time. If it is used for a long time in a liquid, it will be attached with scale. Today we are going to discuss how to optimize the blackening of the electric heating tube? To help more troubled people and solve their troubles.
Under normal working conditions, the easiest way to blacken the surface of the electric heating tube is as follows:
1. First, clean the surface of the metal pipe to keep it clean;
2. The second is degreasing treatment on the surface. This process can completely place the metal tube in the degreasing liquid. The pH value of the degreasing liquid is preferably around 13, and the time is not less than half an hour. After degreasing, rinse with water;
3. Next, pickling can be carried out. The pH of the pickling solution is about 3, and the treatment time should not be longer than 10 minutes. After pickling, rinse with clean water;
4. Blackening treatment: the pH value of the pool solution is between 2-4, and the treatment time is 10 minutes up and down. After the blackening, it is extremely cleaned;
5. Finally, drying and oiling;
The blackening treatment is used in the production process of the electric heating tube. If the above five points are followed, the blackening treatment of the electric heating tube can be carried out. Heat treatment is a process of heat treatment of metal objects such as stainless steel. After treatment, there will be an oxide film on the surface to achieve the purpose of anti-corrosion and anti-rust. After the heating treatment, the wear resistance of the surface of the electric heating tube will be improved, and the hardness of the surface will be improved, and the parts inside the electric heating tube will not be affected.
JINBAO HEATING PRODUCTS FACTORY specializes in the production, research and development of special precision electric heating tubes, heating tubes, electric heating wires and other electric heating equipment.
