Blackening is sometimes used in the production of Oven Coil Electric Tubular Heating Element. Blackening is a common method of chemical surface treatment. The principle is to produce an oxide film on the metal surface to isolate the air and achieve the purpose of rust prevention. Blackening treatment can be used when the appearance requirements are not high, and the surface of the steel parts is blackened, and it is also called blue. After the heat treatment, the wear resistance of the surface of the electric heating pipe is improved, the hardness of the surface is improved, and the components inside the electric heating pipe are not affected.
Under the normal working conditions, the easiest way to blacken the surface of the Oven Coil Electric Tubular Heating Element is as follows:
1. First clean the surface of the metal tube and keep it clean;
2, the second is the surface of the degreasing treatment, this process can completely place the metal tube in the degreasing liquid. The pH of the degreased solution is preferably around 13, and the time is not less than half an hour. Wash off with water after degreasing.
3, washing;
4. Next, pickling can be carried out. The pH value of the pickling solution is about 3, the treatment time is not longer than 10 minutes, and the water is washed after pickling;
5, washing
6, blackening treatment: pool liquid concentration PH value 2-4, processing time 10 minutes up and down, after the black is incomparably clean;
7, washing;
8. Drying;
9. Oiling;
According to the above 9 points, the blackening treatment of the electric heating tube can be performed, which is a very effective method.
Also known as the Black Oxide Industrial Tubular Heating Element, the heating tube, the scientific name of the tubular electric heater element, is a coiled heating wire (resistance wire) placed in the metal tube, and is filled with good heat resistance and thermal conductivity around the gap portion. And insulating insulating powder (MgO), the ends of the heating wire are connected with a lead rod or a lead wire. The utility model has the advantages of simple structure, high mechanical strength, high thermal efficiency, safety and reliability, simple installation and long service life.
The Black Oxide Industrial Tubular Heating Element is an electrical component that converts electrical energy into heat energy. Because of its low price, convenient use, convenient installation and no pollution, it is widely used in various saltpeter tanks, water tanks, oil tanks, acid and alkali tanks, fusible metal melting furnaces, and air. Heating furnace, drying furnace, drying oven, hot stamping and other devices. The types of Black Oxide Industrial Tubular Heating Element are quite numerous. Common ones are: single-head electric heating pipes, explosion-proof electric heating pipes, and heterogeneous Black Oxide Industrial Tubular Heating Element. The Black Oxide Industrial Tubular Heating Element is a device used for heating in the industry, and the electric heating pipe has the characteristics of simple operation and convenient use, and is an industrially unaccessible device.