铝件阳极发黑(国外英文资料).docVIP

铝件阳极发黑(国外英文资料) Anodized aluminum parts The anodized aluminum alloy made of aluminum alloy is treated by hard anodizing. The surface can form a film with thickness of 30~50 m and hardness of about 500HV. It has excellent corrosion resistance and wear resistance. How to do anodic treatment at home -- I. conditions: aluminum or aluminium alloy must be the anode. Two, equipment: (Wagang, earthen pots can also be, as long as the resistance to acid corrosion, can put down parts on the line) Three. Power supply: 9.6V---12V battery or DC transformer Four, solution: the concentration of 12% sulfuric acid (H2SO4) solution. (for example, 100 ml solution, sulfuric acid accounts for 12 ml, water 88 ml), or electrolyte can also be sold (where the battery is available) Five, stainless steel plate 2 pieces (100mmX100mmX300mm size) Six, several wires; The steps are as follows - The first part thoroughly to the anode removing oil (including fingerprint, hand sweat, dirt and so on) such as using lukewarm water washing powder after scrubbing rinse thoroughly with water, dried. Pour 88% of the tap water into the glass tank, then stir it with a glass bar, and slowly add 12% of the concentrated sulfuric acid, Be careful! You must not put sulfuric acid into the water before, because the concentrated sulfuric acid and water will produce high heat, so that the water will boil!!! Very dangerous!!! The amount of solution has been submerged. It is estimated that it will take several hours to cool down to room temperature. When the solution temperature is below 10 degrees Celsius, the hardness of the anode is very high, and the effect is over 20 degrees Celsius. Please bear in mind!!! A stainless steel plate is welded to a wire, or a perforation is passed through the stainless steel wire to make it electrically conductive and connected in series. Immersion solution and in his (with pelvic wall) on both sides of the negative DC power supply is switched on. 4, the oil has been removed and dry par