Supply of KB-326 trivalent chromium blue zinc passivation agents

First, the performance and features: 1, hexavalent chromium, lead, cadmium, mercury and other elements, for green products, has passed the SGS international standards. 2, various types of zinc coating film formed on the surface layer of blue, for rack and barrel plating operations. 3, finished pure blue, not yellow, not hair spray, corrosion resistance, neutral salt spray test barrel for more than 48 hours, rack up more than 72 hours. 4, simple to operate, easy to maintain solution. Second, the operation process: Name passivation solution composition and operating conditions recommended value KB-326 trivalent chromium blue zinc passivation agents open cylinder volume 30-60ml / L 50ml / L Temperature 20-30 ℃ 25 ℃ PH value of 1.8-2.8 2.0 The immersion time 10-35s 15s stirred need consumed barrel 6000-8000dm2 / L, rack 4000-6000dm2 / L Third, the process: galvanized - water - light - two washing - passive - two water - hot water (45-55 degrees) - (Closed) - drying - drying (60-70 degrees) Fourth, the process of using note 1, during normal operation, PH value will rise, with nitric acid is adjusted to a predetermined range. 2, can be used for heating, but the temperature should not exceed 40 ℃. 3, non-working fluid remaining in the workpiece or other metal objects. 4, the working fluid in the iron concentration exceeds 0.3g / L, zinc ion concentrations in excess of 8.0g / L, should be drained 1/4 old working solution, the addition of new working fluid. 5, the coating thickness of the workpiece is preferably not less than 6 microns. Hot 6, in order to ensure the quality of the passivation film, nitric acid passivation passivation before the light of aging and drying can not be omitted. 7, to maintain a good working condition of the plating solution, to avoid organic impurities and other heavy metal impurities into. 8, the workpiece after passivation, should be placed 48 hours, to be aging before making a passivation film entirely neutral salt spray test, the result was accurate and reliable. Five reasons for passivating film coloration common faults and troubleshooting Symptom possible to correct (1) passivation time is short (2) temperature is too low (3) PH value is too low or too high. (4) the zinc layer The thickness is not enough. (5) work concentration is low. extended passivation time adjustment to adjust the PH value warmed to a predetermined value. increased coating thickness added KB-326 passivator passivation film fog zinc layer itself with fog fluid concentration higher than the aging working fluid light liquid zinc, iron ion concentration is high (1) Check and improve quality galvanized (2) diluted working solution. (3) Replace the light liquid (4) of replacement liquid zinc layer passivation film gloss difference rough, shiny light was poor or poor light a short time to check and improve the quality inspection of galvanized and improve the quality of the passivation film light hair color, yellow passivated PH value is too high or too low for too long working fluid in a high concentration of zinc insufficient pump iron too high or swing enough to adjust the PH value to 1.7-2.1 passivation time reducing dilution fluid replacement part of the work was to increase efforts to boost the morale and swing Cambon Shenzhen Science and Technology Co., Ltd. National Hotline: 400-686-0933 Online Service QQ: 2569046591 Contact: Mr. Chen Mobile: 13923748923 Tel: 0755-27147559 Fax: 0755-27469526 E-mail: 008@chinakangbang.com Website: http: //www.chinakangbang.com Address: Bao'an District, Shenzhen City, Guangdong Province, Pine Building, post 松瑞路朗廷