Aluminium anodizing process 2. Aluminium trichrome passivation (TCP process) 3. Stainless steel passivation proces Type II anodizing : black coated clear coated, HNi sealing 2. Type III anodizing: clear coated, Hot water sealing Material of work pieces: most are Al6061 (containing Mg and Si as major alloying elements)
PMAS Training Process PMAS Training Process Aluminium anodizing process Aluminium tri-chrome passivation (TCP process) Stainless steel passivation process Anodizing Process Jigs, Racks and Fixtures Al anodizing process PMAS work pieces: Type II anodizing : black coated & clear coated, HNi sealing Type III anodizing: clear coated, Hot water sealing Material of work pieces: most are Al6061 (containing Mg and Si as major alloying elements) Jig material: Aluminium Pretreatment Process epclen‐20 W/R x Caustic soda epick 50 epclen‐20 W/R x epclen‐AD3S W/R x Caustic soda epick 50 W/R x W/R x H2SO4 or HNO3 epclen‐AD3.1 W/R x W/R x 5xxx All Series and ADC Al anodizing process epclen‐20 W/R x epclen‐AD3.1 W/R x All Series ADC Full Anodizing process Al anodizing process Mild Alkaline cleaner Cleaning epclen 20N Alkaline Etching epick 50 Desmut epclen AD3.1 Anodizing Sulfuric acid Anodising Neutralization Sodium bicarbonate Neutralization Dyeing Anodye series Sealing eploxer HNi S Drying Hot air Etching additives and scale inhibitors Nitric acid free Acid Emulsion Desmutting Premium Dyestuff Hot Sealing Hot air This diagram does not represent the process of Anodising Degreasing Al anodizing process epclen 20N: Chemical Temp Time Tank Process o HG Name ( C) (min) 1.1 epclen 20N 2.1 2.2 Cascade rinse Cascade rinse Degreas 60-70 ing Tank size (cm) Bath Tank Agitati Exhau scrubb Rectifi Heat/Co vol water Filter mat'l on st er er oler (L) Heater 850 PP RO air ○ ○ SUS W L H 100 100 85 100 50 85 425 PP CW air - 100 50 85 425 PP CW air - Degreasing Al anodizing process * Analysis of solution concentration after make –up and periodicity is required * Analysis procedure is shown in TDS and TA Etching Al anodizing process NaOH + epick 50: Tank 2.3 3.1 3.2 3.3 Chemical Proces Temp Time Name s (oC) (min) NaOH 98% Flake Etching 50-60 epick 50 Cascade rinse Cascade rinse Cascade rinse Tank size (cm) HG Bath vol (L) Tank Agitati Exhaus scrubb Rectifi Heat/Co water Filter mat'l on t er er oler W L H 100 50 85 425 PP CW air 100 50 85 425 PP CW air - 100 50 85 425 PP CW air - 100 50 85 425 PP CW air ○ ○ Heater SUS Etching Al anodizing process From caustic soda etchant reaction 2Al + 2NaOH + 2H2O 2NaAlO2 + H2 2NaAlO2 + 4H2O 2Al(OH)3 + 2NaOH This produces an insoluble precipitate aluminum hydroxide 10 Hot Sealing Al anodizing process * Analysis of solution concentration after make –up and periodicity is required * Analysis procedure is shown in TDS and TA 35 Quality Measurement Al anodizing process Coating thickness Dye stain test Weight loss test Sunlight fastness UV fastness Heat fastness 36 TCP Process 37 TCP Process Passivation chemical: * Analysis of solution concentration after make –up and periodicity is required * Analysis procedure is shown in TDS and TA 38 Quality Measurement Corrosion testing: Salt Spray test Exposed time shall be mutually agreed upon btw purchaser and the seller 39 SUS Passivation Process Chemical Loading epclen 62 Surfin DM1 Cascade rinse Cascade rinse epclen P12 Cascade rinse Cascade rinse Cascade rinse Type VI Cascade rinse VI Cascade rinse VI Cascade rinse VI Hot rinse VI Type II Cascade rinse II Cascade rinse II Cascade rinse II Hot rinse II Air blow Oven Unload Process Degreasing Temp (oC) Time (min) HG 60-70 10-20 Activation RT 1-2 Passivation 20-30 30 Passivation 60-80 50-55 1-2 20 60-80 RT 80 1-2 Until dry 20-30 Tank size W L H Bath volume Tank Mat'l Water Agitation Exhaust Scrubber (L) 100 100 85 850 SUS 304 RO air 1 1 1 1 1 1 1 1 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 70 70 70 70 70 70 70 70 70 70 70 100 70 70 70 70 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 595 595 595 595 595 595 595 595 595 595 595 850 595 595 595 595 PP PP PP PP PP PP PP PP PP PP SUS 304 PP PP PP PP SUS 304 CW CW RO DI DI DI DI RO RO RO RO DI RO RO RO RO air air air air air air air air air air air air air air air air o o o o o o o o 40 SUS Passivation Process Degreasing epclen 62 Surfin DM Activation epclen –P12 Passivation Type II, Type VI Hot rinse Drying Alkaline cleaner Acid salt Nitric acid, sodium dichromate DI or RO water Hot air 41 Degreasing SUS passivation process Epclen 62 + Surfin DM1: Tank size Chemical Temp Time Process o ( C) (min) HG Degreasi 60-70 10-20 ng Bath Tank Agitati Exhaus Scrubb volum Water Mat'l on t er e (L) W L H 100 100 85 850 SUS 304 RO air Cascade rinse 1 100 70 85 595 PP CW air Cascade rinse 100 70 85 595 PP CW air epclen 62 Surfin DM1 o o 42 Degreasing SUS passivation process * Analysis of solution concentration after make –up and periodicity is required * Analysis procedure is shown in TDS and TA 43 Degreasing SUS passivation process 44 Activation SUS passivation process epclen P12: Tank size Chemical Temp Process (oC) Time (min) HG 1-2 Bath Tank Agitati Scrubb volume Water Exhaust Mat'l on er (L) W L H 100 70 85 595 PP RO air Cascade rinse 1 100 70 85 595 PP DI air Cascade rinse 100 70 85 595 PP DI air Cascade rinse 100 70 85 595 PP DI air Activatio epclen P12 n RT o o 45 Activation SUS passivation process * Analysis of solution concentration after make –up and periodicity is required * Analysis procedure is shown in TDS and TA 46 Passivation SUS passivation process Type II: Make up solution: 20-25v% Nitric, 2-2.5 w% Sodium dichromate Temp.: 49-54 oC (120-130 oF) Time: 20 Type VI: Make up solution: 25-45 v% Nitric acid Temp.: 21-32 oC (70-90 oF) Time: 30 * Analysis of solution concentration after make –up and periodicity is required * Analysis procedure is shown in TDS and TA 47 Quality Test Method SUS passivation process Water Immersion Test High Humidity Test Salt Spray Test Copper Sulfate Test 48 Thank you for your attention 49