Steps For Surface Treatment Of Linear Optical Axis

①Immerse in the solution at 60°C for 10 minutes: Phosphoric acid 10 ethanol 20 wash away carbon residues with running water, wash with distilled water, and dry at 120°C for 30 minutes. the

② Commonly used solvents for degreasing: trichloroethylene, acetone, ethyl acetate, gasoline, benzene, absolute ethanol.

③ After degreasing, soak in 3.5% sodium hydroxide solution at 60°C for 20 minutes, rinse with cold water, then actinize in 5% solution for 10 minutes, rinse with cold water, and then soak in the following solution: heavy chromium Sodium acid 7.5 sulfuric acid 24 water 7765 ° C after soaking for 20 minutes, washed with 60 ° C hot water, then washed with cold water, dried at 70 ° C.

④ Degrease after sandblasting or emery cloth grinding.

⑤Immerse in the following solution at 60-65°C for 5min: sodium silicate 30 sodium alkylarylsulfonate 3 water 967, wash with water, wash with hot distilled water, and dry at 100-105°C.

⑥Immerse in 10% water glass aqueous solution at 60°C for 10-15min, then wash with water and dry.

⑦Immerse in 18% hydrochloric acid aqueous solution at room temperature for 5-10min, rinse with cold water, wash with distilled water, and dry at 93°C for 10min.

⑧Treat in a mixture of equal amounts of concentrated phosphoric acid and formaldehyde at 60°C for 10 minutes, then wash with water and dry.

⑨Immerse in the solution at 71-77°C for 10 minutes: Sodium dichromate 4 sulfuric acid 10 water 30, washed with water, washed with distilled water, and dried at 93°C.