Phosphate type: different formulations of phosphating solution (such as zinc, manganese, iron phosphating solution) have different temperature requirements. Zinc phosphating solution: usually in the range of 35-45 ℃. Manganese phosphating solution: usually in the range of 80-95 ℃. Iron phosphating solution: usually in the range of 40-60 ℃. Additive components: phosphating solution in the accel
What is the process temperature of a phosphating tank related to?
Author: Robby
The process temperature of the phosphating tank is a key parameter in the phosphating treatment process, which directly affects the quality of the phosphating film, the formation rate and the stability of the phosphating solution. The process temperature of the phosphating tank is mainly related to the following factors:
1. Phosphate solution formulation
Phosphate type: different formulations of phosphating solution (such as zinc, manganese, iron phosphating solution) have different temperature requirements.
Zinc phosphating solution: usually in the range of 35-45 ℃.
Manganese phosphating solution: usually in the range of 80-95 ℃.
Iron phosphating solution: usually in the range of 40-60 ℃.
Additive components: phosphating solution in the accelerator, stabiliser and other additives will affect the temperature range of the phosphating reaction.
2. Phosphate film quality requirements
Film thickness and densification: higher temperatures can usually speed up the phosphating reaction rate, the formation of thicker phosphate film, but too high a temperature may lead to rough or loose film.
Film uniformity: too low a temperature may lead to incomplete phosphating reaction, the film is not uniform.
3. Workpiece material
Type of steel: different materials of the workpiece on the phosphating temperature requirements are different. For example, low carbon steel and medium carbon steel phosphating temperature may be slightly different.
Surface condition: the cleanliness and roughness of the surface of the workpiece will also affect the choice of phosphating temperature.
4. Production efficiency
Reaction speed: Higher temperature can accelerate the phosphating reaction speed, shorten the treatment time and improve the production efficiency.
Energy consumption and cost: the higher the temperature, the greater the energy consumption, the production cost will also increase, so you need to find a balance between efficiency and economy.
5. Stability of phosphating solution
Too high a temperature: may lead to decomposition or precipitation of phosphate components, affecting the stability and service life of the phosphate solution.
Too low a temperature: may lead to incomplete phosphating reaction, phosphate solution of the effective components of the utilisation rate is reduced.
6. Environmental factors
Ambient temperature: the ambient temperature of the workshop will affect the phosphating tank insulation effect and temperature control precision.
Tank insulation performance: phosphating tank insulation design will affect the stability of the temperature and energy consumption.
7. Process requirements
Phosphating type: different phosphating process (such as room temperature phosphating, medium temperature phosphating, high temperature phosphating) on the temperature requirements are different.
Normal temperature phosphating: 15-35 ℃, energy saving but slower reaction speed.
Medium temperature phosphating: 35-65 ℃, taking into account the efficiency and quality.
High-temperature phosphating: 65-95 ℃, fast reaction speed but high energy consumption.
Summary
Phosphating tank process temperature and phosphate formula, workpiece material, phosphate film quality requirements, production efficiency, phosphate stability, environmental factors and process requirements are closely related. In actual production, according to the specific needs and conditions, need to choose the appropriate temperature range to ensure the quality of the phosphating film and production efficiency.