Pure titanium plate warm pickling process

The warm pickling process of pure titanium plates and strips includes a pre-cleaning process, which is characterized in that: the warm pickling process of pure titanium plates and strips also includes the following processes after the pre-cleaning process:
Water washing process and pickling process. The water washing process uses water with a water temperature in the range of 35°C to 45°C; the composition and content of the solution used in the pickling process are: HNO3: 190~280g/l; HF: 15~45g/l; metal ions in the acid Content: 10~35g/l; Pickling time: 1.5~1.75min, acid temperature: 35℃~45℃. This pure titanium plate warm pickling process can reduce the number of combinations of strong acid solutions, effectively reduce the re-acidification rate, ensure passivation protection of the surface of pure titanium plates, solve the problem of macular defects on the surface of pure titanium plates, and improve production efficiency without the need for special Passivation treatment process reduces production costs.

Pure titanium plate is a metal material with excellent corrosion resistance and high strength. It is usually widely used in chemical industry, marine engineering, aerospace and other fields. Warm pickling is a commonly used surface treatment process that can remove oxides, contaminants and other undesirable substances on the surface of pure titanium and improve its surface quality and corrosion resistance. The following is a brief introduction to the general warm pickling process of pure titanium plates:
Preparation: Ensure that operators wear appropriate personal protective equipment, such as protective glasses, gloves, protective clothing, etc.
Prepare the required chemicals. The acids usually used in warm pickling include sulfuric acid, hydrofluoric acid, etc.
Cleaning the surface: Before warm pickling, clean the surface of the pure titanium plate to remove dust, grease and other impurities on the surface.
Alkaline cleaners or other suitable cleaning methods can be used to ensure the surface is clean.
Immersion warm pickling: Put the pure titanium plate into an acid solution, usually a mixture of sulfuric acid and hydrofluoric acid. Control the temperature. Generally, the temperature range of warm pickling is between 50°C and 80°C. The specific temperature depends on the process requirements.
Time is also critical, with washing times usually ranging from tens of minutes to hours to ensure adequate removal of surface oxides and contaminants.
Neutralization and rinsing: After the warm pickling is completed, the acid solution is neutralized. An alkaline solution can be used to neutralize the acid solution.
Rinse the pure titanium plate to ensure that all acid is washed away to prevent acid residue from causing corrosion.
Drying: The washed pure titanium plate can be dried by air drying or other appropriate methods to ensure surface dryness and prevent secondary pollution.
Warm pickling is a relatively common surface treatment method for pure titanium, but it should be noted that safe operating procedures should be strictly followed during the operation to prevent harm to the human body and the environment. In addition, the specific process parameters and chemical selection should be adjusted according to the actual situation and requirements.