[ Method 1] Degreasing treatment. Commonly used solvents are: trichloroethylene, acetone, ethyl acetate and methyl ethyl ketone.
[ Method 2] After degreasing, in the following solution at 70 -75 °C Immersion for 5 min : sodium hydroxide 12 water 100 rinsed with cold water and then in the following solution 20 ° C  Dipping 5min: chromium oxide 10 100 over anhydrous sodium sulfate 2.8 Water rinse with cold water, then washed with distilled water, the 40 ° C  dry.
[ Method 3] After degreasing, in 6.3% sodium hydroxide solution 70 ° C  After immersing for 10 min , washing with water, and then in the following solution 55 ° C Immersion for 5 min : chromium oxide 13.8 calcium sulfate 1.2 water 85 washed with distilled water, and then in the following solution 55 ° C Immersion for 3 min : chromium oxide 10 sodium sulfate 0.5 water 89.5 after washing with water 60 ° C  Dry below.
[ Method 4] in the following solution 20 ° C  Immersion for 3 min : chromium oxide 16.6 sodium nitrate 20 glacial acetic acid 105 water 100 rinsed with cold water, washed with distilled water, at 40 ° C  Dry below
[ Method 5] in the following solution at 60 -70 °C Dipping 3min: Sodium dichromate, manganese sulfate 10 5 5 Magnesium sulfate 80 water rinse with cold water, distilled water, in 70 ° C  Dry below.
[ Method 6] After degreasing, it was immersed in the following boiling solution for 20 minutes : sodium dichromate 1.5 ammonium sulfate 3 ammonia water (d = 0.88) 0.3 water 93.7 was rinsed with warm water, washed with distilled water, and dried.
[ Method 7] In 30 ° C  The following ammonium hydride ammonium 10% solution is anodized to a current density lower than 0.45A /m2 (one electrode panel), AC voltage 90-120V , then washed with water and dried.
[ Method 8] at 20 -30 °C Following anodization solution: potassium aluminum 12 0.75 3.4 sodium phosphate, potassium fluoride, anhydrous potassium permanganate 3.4  1.5 water 80 AC voltage 85V , current density 1.1 -1.4A /m2 , then washed with cold distilled water and dried.
[ Method 9] After degreasing 70 ° C  Wash the following lye for 5-15min : sodium hydroxide 23-34 water 400 is washed with cold water for 5min , then immersed in the following solution for 5-15min , temperature 55 ° C  : chrome oxide 57-68 calcium nitrate 5 water 450 washed with cold water for 2min , and then immersed in the following solution for 3-12min , temperature 55 ° C  : chrome oxide 45 sodium phosphate 8 water 450 washed in cold water for 2min , then 40 ° C  Dry for 30 min . Â
CNC Busbar Bending Machine is the computer-controlled equipment dedicated for busbar bending, performing various bending operations through the coordination of X-axis and Y-axis movements, assisted with manual feeding. The selection of different dies can complete the plane bending, side bending and other processes of busbar. The machine can be used in combination with GJ3D software, and is able to accurately calculate the spread length of the bend. As to the frequently bent workpiece, it can automatically find the bending order to achieve programming automation, simulate the bending order to place busbar and avoid errors in determining the bending positions.
Busbar Bending Machine
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