Black treatment of silicone rubber heater

Blackening treatment is sometimes used in the production of silicone rubber heaters. New energy vehicle battery heater solves the heating system solution for low-temperature environment charging of power batteries: The silicone heating system is a thin and pure resistive heating element, which is very soft and has a thickness of 1.5mm. Lithium battery heaters have basic functions, such as heating, constant temperature, and temperature control. The electric vehicle battery heater uses the thermal energy generated by the auxiliary heater to heat the battery pack, which does not consume battery power and therefore does not affect the power and range of the electric vehicle. At the same time, it can also ensure the heat required by the air conditioning system. The vehicle controller distributes heat by controlling the opening of each electronic control valve, and the control method is simple. Heat treatment is the process of heat treatment on metal objects such as stainless steel. After treatment, there will be a layer of oxide film on the surface, achieving the purpose of anti-corrosion and rust prevention. After heating treatment, the surface wear resistance of the heating tube is improved, the surface hardness is increased, and it will not affect the internal components of the silicone rubber heater.

Under normal working conditions, blackening generally involves the following steps:

1. Firstly, data cleaning can be performed on the surface of the metal tube to maintain a relatively clean appearance;

Secondly, degrease the surface, during which the metal tube can be completely placed in the degreasing solution.

3. Next, it can be pickled. The pH value of the pickling toner is about 3, and the processing time should not exceed 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 up and down for 10 minutes. Very clean after turning black;

5. Later on, it can be processed, dried, and oiled;

This is a relatively easy method to make the surface of the heating tube black.