Chengdu Branch-brand LH-19 low temperature without surface conditioning zinc phosphate solution

(Photo for phosphate coating microstructure micrograph) 1. Scope: This product is at (phosphate coating metallurgical micrograph) at room temperature and low temperature can be used, at low temperatures without table transfer, phosphate can be directly used dipping or spray can be applied to automobiles, motorcycles, instruments, auto parts, motorcycle parts, household appliances and other industries of steel parts before painting phosphate treatment, supporting and electrophoresis, spray, paint, painting and other crafts. 2. Main features: 2.1 at low temperatures can be eliminated table transfer process, saving cost, simple process. 2.2 bath stability, less sediment, long life, low comprehensive cost. 2.3 phosphate coating for fine crystal, silver or gray, good corrosion resistance, strong rust resistance, phosphate coating surface without hanging ash or bottom drain phenomenon. 3. The main technical indicators: Item Index Category concentrate Amount (%) 10 Appearance Green liquid working fluid total acidity (point) from 20 to 35 free acidity (point) 1.0 to 2.0 phosphate temperature (℃) 30 ~ 50 Time (min ) Baptist: 8 to 15 spray: 1.5-3 phosphate dipping manner, spraying 4. Process: Oil rust workpiece phosphate → washing → drying 5. Preparation and Maintenance: 5.1 1000 liters working solution preparation 5.1.1 first adding about 200kg of water in the tank, and then to add concentrated liquid, make up the water and stir. Finally, add the right amount of neutralizer Stir the free acid index adjusted range of technology. 5.1.2 confirm the temperature, sampling determination of free acidity and total acidity. 5.2 Detection 5.2.1 Total acidity (TA): Take 10ml phosphate bath in flask with bromophenol blue as indicator, with 0.1mol / L standard NaOH solution was titrated to a solution by the time of yellowing blue the number of milliliters end, consumed NaOH standard solution of free acidity, with "dot" numbers. Consumption standard solution 1mL, free acidity is 1:00. 5.3 bath 5.3.1 Calculation of additional use when phosphate solution to a certain extent, need additional concentrates, additional amount calculated as follows: V conc = C0-C1 / C2-C0 × V1 V concentrated: that the required amount of concentrate additional volume; C1: actual total acidity bath; C2: total acidity concentrate; C0: bath requires total acidity; V1:. Volume bath 6. Packaging storage: 25kg, 30kg plastic drums, as a general chemical transport, storage in a cool place.