Third, copper and copper alloy surface treatment method
[method 1]
Degreasing commonly used solvents: trichloroethylene, acetone, butanone, ethyl acetate.
[Method 2]
After sandblasting or emery cloth, it is roughened and degreasing.
[Method 3]
Dipping in the following solution at 25-30 ° C 1min;
Concentrated sulfuric acid 8 concentrated nitric acid 25 water 17
It is then washed with water and dried at 50-60°C.
[Method 4]
Immerse in the following solution at 60-70 °C for 10 min:
Concentrated sulfuric acid 40 Iron sulfate 4.5 Water 38
It is then washed with water and dried at 60-70°C.
[Method 5]
Immerse for 10-15min at 25-30°C in the following solution:
Concentrated sulfuric acid 10 sodium dichromate 5 water 85
Then it was washed with water and dried at room temperature.
[Method 6]
Immerse 1-2min at 25-30°C in the following solution:
Ferric chloride 15 Concentrated nitric acid 30 Water 200
Then it was washed with water and dried at room temperature.
[Method 7]
After degreased, it was etched in the following solution for 10 minutes at a temperature of 66-71°C:
Iron sulfate 4.5 Concentrated sulfuric acid 3.4 Water 450
Then wash in cold water at 20 °C for 5 min, then dip in the following solution:
Sodium dichromate 5 Concentrated sulfuric acid 10 Water 85
Then wash in cold water, immerse in ammonium hydroxide (d = 0.85) for 10 min, rinse with cold water for 5 min, wash with distilled water, and dry at 40 °C. This method is used for brass and bronze treatment.
[Method 8]
Oxidation in the following solution:
Potassium persulphate 1.5 Sodium hydroxide 5 Water 100
Immerse for 15-20min at 60-70°C, the surface is black, wipe once with carbon tetrachloride before glueing. This method is used for copper foil processing.
Fourth, stainless steel surface treatment method [Method 1]
Degreasing common solvents: trichloroethylene, acetone, butanone, benzene, ethyl acetate.
[Method 2]
After sandblasting or emery cloth, it is greased.
[Method 3]
Immerse in the following solution at 70-85 °C for 10 min:
Sodium silicate 6.4 Sodium pyrophosphate 3.2 Sodium hydroxide 3.2 Detergent powder 1 Water 32
After washing with cold water, dry at 93°C.
[Method 4]
After degreased, immersed in the following solution for 10 minutes at a temperature of 80°C, PH=12.65:
Sodium Phosphate 8.5 Sodium Pyrophosphate 4.2 Sodium Hydroxide 4.2 Surfactant 1.4 Water 380
Take out the water and dip in the following solution at 65 °C for 3 min:
Chrome oxide 20 water 380
After washing and drying.
[Method 5]
Immerse in 65-70°C for 5-10min in the following solution:
Hydrochloric acid (37%) 2 Hexamethylenetetramine 5 Water 20
Then 30% hydrogen peroxide was added, and the water was taken out and dried at 93°C.
[Method 6]
Immerse in 50°C for 10min in the following solution:
Potassium dichromate saturated solution 0.35 Sulfuric acid (d=1.84 ) 10
Then the carbon residue was brushed off, washed with distilled water, and dried at 70°C. This method is suitable for applications where maximum peel strength is required.
[Method 7]
In lead-lined tank, the concentration of sulfuric acid is 500g/l, anodization is 90s, voltage is 6V, rinse with water, wash with distilled water, dry at 70°C, and the adhesive is an anode, after treatment, in a 5-10% chromium oxide solution Passivation for 20 minutes.
[Method 8]
Immerse in 85-90°C for 10min in the following solution:
Oxalic acid 37 Sulfuric acid (d=1.84) 36 Water 300
After washing with distilled water, dry it with warm air.
[Method 9]
After degreased, immersed in a solution at 65°C for 10 minutes:
Hydrochloric acid (d=1.19) 52 Hydrogen peroxide (30%) 2 Formaldehyde (38%) 10 Water 45
After washing with water, immersed in the following solution for 10 minutes at a temperature of 65°C:
Sulfuric acid (d=1.84) 100 sodium dichromate 10 water 30
After washing with distilled water, it was dried at 70°C.
[Method 10]
After washing with water-soluble industrial soap, 40°C hot water for 5 minutes, 120°C drying, then dipping in the following solution at 100°C for 2 minutes:
Hydrochloric acid 200 Phosphoric acid 30 Hydrofluoric acid 10
It was washed with hot water at 40°C for 5 minutes and dried at 40°C for 30 minutes.
Fifth, carbon steel and ferroalloy surface treatment methods
[method 1]
Degreasing commonly used solvents: trichloroethylene, acetone, ethyl acetate, gasoline, benzene, anhydrous ethanol.
[Method 2]
Sandblasting or emery cloth after grinding and degreasing.
[Method 3]
It was dipped in a 10% aqueous solution of water glass at 60°C for 10-15 minutes, then washed with water and dried.
[Method 4]
It was dipped in 18% aqueous hydrochloric acid at room temperature for 5-10 min, washed with cold water, washed with distilled water, and dried at 93° C. for 10 min.
[Method 5]
The mixture was treated with an equal amount of concentrated phosphoric acid and formaldehyde at 60C for 10 minutes, then washed with water and dried.
[Method 6]
After degreasing, immersing in 3.5% sodium hydroxide solution at 60°C for 20 minutes, rinsing with cold water, and then photochemicalizing in 5% nitric acid solution for 10 min, rinsing with cold water, and then immersing in the following solution:
Sodium dichromate 7.5 Sulfuric acid 24 Water 77
After being immersed for 20 minutes at 65°C, it was washed with 60°C hot water, washed with cold water, and dried at 70°C.
[Method 7]
Immerse in 71-77°C for 10min in the following solution:
Sodium dichromate 4 Sulfuric acid (d=1.84) 10 Water 30
After washing, distilled water, dried at 93 °C.
[Method 8]
Immerse in 60-65°C for 5min in the following solution:
Sodium Silicate 30 Sodium Alkyl Sulfonate 3 Water 967
After washing, hot distilled water was washed and dried at 100-105°C.
[Method 9]
Immerse in the following solution at 60 °C for 10 min:
Phosphoric acid (88%) 10 Ethanol 20
Carbon slag was washed away by running water, washed with distilled water, and dried at 120° C. for 30 minutes.
Six, titanium and titanium alloy surface treatment methods
[method 1]
Degreasing commonly used solvents: trichloroethylene, acetone, butanone, benzene, ethyl acetate, gasoline, anhydrous ethanol.
[Method 2]
After degreased, immersed in the following solution at 20 °C for 5-10 minutes:
Sodium fluoride 2 Chromium oxide 1 Sulfuric acid (d=1.84) 10 Water 50
After washing with water, wash with distilled water and dry at 93°C.
[Method 3]
Treat in the following solution at 20 °C for 2 minutes:
Hydrofluoric acid (conc.) 84 Hydrochloric acid (37%) 8.9 Phosphoric acid (85%) 4.3
Rinse with water, rinse with distilled water, and dry at 93°C.
[Method 4]
After degreasing, wash with a basic aqueous solution and then treat in the following solution at room temperature for 4-6 min:
Nitric acid (70%) 5 Ammonium fluoride 3 Water 92
After washing, treat in the following solution at room temperature for 2min:
Trisodium phosphate 5 Sodium fluoride 1 Hydrofluoric acid 1.5 Water 92.5
After washing and drying.
[Method 5]
After degreasing, scrub with the following solution for 2-3min:
Trisodium phosphate 5 Sodium fluoride 1.3 Hydrofluoric acid 2.9 Water 90.8
After washing, dry at 60°C.
Seven, zinc and zinc alloy surface treatment methods
[method 1]
Degreasing commonly used solvents: trichloroethylene, acetone, butanone, ethyl acetate, gasoline.
[Method 2]
After degreased, immersed in the following solution at room temperature for 2-4min:
Hydrochloric acid (37%) 10-20 Water 90-80
Wash with warm water, wash with distilled water, dry at 66-71 °C for 30 min.
[Method 3]
Immerse in 3-6min at 38°C in the following solution:
Sulfuric acid (d-1.84) 2 Sodium dichromate 1 Water 8
Rinse with cold water, wash with distilled water, and dry at 40°C.
[method 1]
Degreasing commonly used solvents: trichloroethylene, acetone, butanone, ethyl acetate.
[Method 2]
After sandblasting or emery cloth, it is roughened and degreasing.
[Method 3]
Dipping in the following solution at 25-30 ° C 1min;
Concentrated sulfuric acid 8 concentrated nitric acid 25 water 17
It is then washed with water and dried at 50-60°C.
[Method 4]
Immerse in the following solution at 60-70 °C for 10 min:
Concentrated sulfuric acid 40 Iron sulfate 4.5 Water 38
It is then washed with water and dried at 60-70°C.
[Method 5]
Immerse for 10-15min at 25-30°C in the following solution:
Concentrated sulfuric acid 10 sodium dichromate 5 water 85
Then it was washed with water and dried at room temperature.
[Method 6]
Immerse 1-2min at 25-30°C in the following solution:
Ferric chloride 15 Concentrated nitric acid 30 Water 200
Then it was washed with water and dried at room temperature.
[Method 7]
After degreased, it was etched in the following solution for 10 minutes at a temperature of 66-71°C:
Iron sulfate 4.5 Concentrated sulfuric acid 3.4 Water 450
Then wash in cold water at 20 °C for 5 min, then dip in the following solution:
Sodium dichromate 5 Concentrated sulfuric acid 10 Water 85
Then wash in cold water, immerse in ammonium hydroxide (d = 0.85) for 10 min, rinse with cold water for 5 min, wash with distilled water, and dry at 40 °C. This method is used for brass and bronze treatment.
[Method 8]
Oxidation in the following solution:
Potassium persulphate 1.5 Sodium hydroxide 5 Water 100
Immerse for 15-20min at 60-70°C, the surface is black, wipe once with carbon tetrachloride before glueing. This method is used for copper foil processing.
Fourth, stainless steel surface treatment method [Method 1]
Degreasing common solvents: trichloroethylene, acetone, butanone, benzene, ethyl acetate.
[Method 2]
After sandblasting or emery cloth, it is greased.
[Method 3]
Immerse in the following solution at 70-85 °C for 10 min:
Sodium silicate 6.4 Sodium pyrophosphate 3.2 Sodium hydroxide 3.2 Detergent powder 1 Water 32
After washing with cold water, dry at 93°C.
[Method 4]
After degreased, immersed in the following solution for 10 minutes at a temperature of 80°C, PH=12.65:
Sodium Phosphate 8.5 Sodium Pyrophosphate 4.2 Sodium Hydroxide 4.2 Surfactant 1.4 Water 380
Take out the water and dip in the following solution at 65 °C for 3 min:
Chrome oxide 20 water 380
After washing and drying.
[Method 5]
Immerse in 65-70°C for 5-10min in the following solution:
Hydrochloric acid (37%) 2 Hexamethylenetetramine 5 Water 20
Then 30% hydrogen peroxide was added, and the water was taken out and dried at 93°C.
[Method 6]
Immerse in 50°C for 10min in the following solution:
Potassium dichromate saturated solution 0.35 Sulfuric acid (d=1.84 ) 10
Then the carbon residue was brushed off, washed with distilled water, and dried at 70°C. This method is suitable for applications where maximum peel strength is required.
[Method 7]
In lead-lined tank, the concentration of sulfuric acid is 500g/l, anodization is 90s, voltage is 6V, rinse with water, wash with distilled water, dry at 70°C, and the adhesive is an anode, after treatment, in a 5-10% chromium oxide solution Passivation for 20 minutes.
[Method 8]
Immerse in 85-90°C for 10min in the following solution:
Oxalic acid 37 Sulfuric acid (d=1.84) 36 Water 300
After washing with distilled water, dry it with warm air.
[Method 9]
After degreased, immersed in a solution at 65°C for 10 minutes:
Hydrochloric acid (d=1.19) 52 Hydrogen peroxide (30%) 2 Formaldehyde (38%) 10 Water 45
After washing with water, immersed in the following solution for 10 minutes at a temperature of 65°C:
Sulfuric acid (d=1.84) 100 sodium dichromate 10 water 30
After washing with distilled water, it was dried at 70°C.
[Method 10]
After washing with water-soluble industrial soap, 40°C hot water for 5 minutes, 120°C drying, then dipping in the following solution at 100°C for 2 minutes:
Hydrochloric acid 200 Phosphoric acid 30 Hydrofluoric acid 10
It was washed with hot water at 40°C for 5 minutes and dried at 40°C for 30 minutes.
Fifth, carbon steel and ferroalloy surface treatment methods
[method 1]
Degreasing commonly used solvents: trichloroethylene, acetone, ethyl acetate, gasoline, benzene, anhydrous ethanol.
[Method 2]
Sandblasting or emery cloth after grinding and degreasing.
[Method 3]
It was dipped in a 10% aqueous solution of water glass at 60°C for 10-15 minutes, then washed with water and dried.
[Method 4]
It was dipped in 18% aqueous hydrochloric acid at room temperature for 5-10 min, washed with cold water, washed with distilled water, and dried at 93° C. for 10 min.
[Method 5]
The mixture was treated with an equal amount of concentrated phosphoric acid and formaldehyde at 60C for 10 minutes, then washed with water and dried.
[Method 6]
After degreasing, immersing in 3.5% sodium hydroxide solution at 60°C for 20 minutes, rinsing with cold water, and then photochemicalizing in 5% nitric acid solution for 10 min, rinsing with cold water, and then immersing in the following solution:
Sodium dichromate 7.5 Sulfuric acid 24 Water 77
After being immersed for 20 minutes at 65°C, it was washed with 60°C hot water, washed with cold water, and dried at 70°C.
[Method 7]
Immerse in 71-77°C for 10min in the following solution:
Sodium dichromate 4 Sulfuric acid (d=1.84) 10 Water 30
After washing, distilled water, dried at 93 °C.
[Method 8]
Immerse in 60-65°C for 5min in the following solution:
Sodium Silicate 30 Sodium Alkyl Sulfonate 3 Water 967
After washing, hot distilled water was washed and dried at 100-105°C.
[Method 9]
Immerse in the following solution at 60 °C for 10 min:
Phosphoric acid (88%) 10 Ethanol 20
Carbon slag was washed away by running water, washed with distilled water, and dried at 120° C. for 30 minutes.
Six, titanium and titanium alloy surface treatment methods
[method 1]
Degreasing commonly used solvents: trichloroethylene, acetone, butanone, benzene, ethyl acetate, gasoline, anhydrous ethanol.
[Method 2]
After degreased, immersed in the following solution at 20 °C for 5-10 minutes:
Sodium fluoride 2 Chromium oxide 1 Sulfuric acid (d=1.84) 10 Water 50
After washing with water, wash with distilled water and dry at 93°C.
[Method 3]
Treat in the following solution at 20 °C for 2 minutes:
Hydrofluoric acid (conc.) 84 Hydrochloric acid (37%) 8.9 Phosphoric acid (85%) 4.3
Rinse with water, rinse with distilled water, and dry at 93°C.
[Method 4]
After degreasing, wash with a basic aqueous solution and then treat in the following solution at room temperature for 4-6 min:
Nitric acid (70%) 5 Ammonium fluoride 3 Water 92
After washing, treat in the following solution at room temperature for 2min:
Trisodium phosphate 5 Sodium fluoride 1 Hydrofluoric acid 1.5 Water 92.5
After washing and drying.
[Method 5]
After degreasing, scrub with the following solution for 2-3min:
Trisodium phosphate 5 Sodium fluoride 1.3 Hydrofluoric acid 2.9 Water 90.8
After washing, dry at 60°C.
Seven, zinc and zinc alloy surface treatment methods
[method 1]
Degreasing commonly used solvents: trichloroethylene, acetone, butanone, ethyl acetate, gasoline.
[Method 2]
After degreased, immersed in the following solution at room temperature for 2-4min:
Hydrochloric acid (37%) 10-20 Water 90-80
Wash with warm water, wash with distilled water, dry at 66-71 °C for 30 min.
[Method 3]
Immerse in 3-6min at 38°C in the following solution:
Sulfuric acid (d-1.84) 2 Sodium dichromate 1 Water 8
Rinse with cold water, wash with distilled water, and dry at 40°C.
Source: 21st Century Fine Chemicals Network
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| Name | Hanging steel brazier firepit |
| Material | Corten steel |
| Cooking plate Size | Diameter 800mm |
| Weight | 65KG |
| Packing | wooden box packing |
Packing
Packing will by wooden box.
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