This 60℃-80℃ zinc phosphating agent is a medium-temperature, low-slag zinc-based phosphating solution. The phosphating solution is composed of components with the following mass concentrations: phosphoric acid 100~200g/L, nitric acid 30~50g/L, zinc oxide 30~50g/L, Manganese carbonate 40~60g/L, nickel nitrate 3~5g/L, sodium sulfosalicylate 3~5g/L, tartaric acid 1~2g/L.
This 60℃-80℃ zinc phosphating agent controls the acid ratio of the solution to make PO4 3- and HPO4 2- in the solution precipitate slower. The second is to use appropriate complexing agents to exist in the form of complexes such as Fe2+, Zn2+, Mn2+ and other metal ions produced during the phosphating process, so that the concentration of Fe2+, Zn2+, Mn2+ in the solution is reduced, thereby reducing sediment.
The traditional medium-temperature zinc-based phosphating solution will produce a large amount of phosphorus slag during the phosphating process. If these phosphorus slag cannot be removed in time, the accumulation of Fe2+ in the phosphorus tank will be very high, affecting the phosphorus effect. Therefore, slag needs to be broken every day during use, which increases labor intensity. On the other hand, these phosphorus slags contain a large amount of effective Zn2+, PO4 3-, and HPO4 2- ions. The phosphating solution consumes a lot and needs to be replenished every day. In order to reduce labor intensity and reduce the consumption of phosphating solution, the low-slag zinc phosphating solution of this product is of great practical significance.
This product is simple to operate and easy to use: the phosphating film has good effect and weighs about 2-3G/square meter; it has low absorption, low material consumption and less precipitation; its rust prevention power is stronger than that of ordinary zinc-manganese phosphating liquids.
Pre-phosphating treatment matters: oil, rust and other external attachments must be removed, otherwise the quality of the phosphating film will be affected; rust removal can be carried out by using hydrochloric acid or sulfuric acid; the choice of degreasing agent is also very important.
Hot Tags: 60℃-80℃ zinc phosphating agent, China 60℃-80℃ zinc phosphating agent manufacturers, suppliers, factory, garden tool blackening agent, luggage tag blackening agent, knife blade blackening agent, liquid blackening agent, quick drying degreaser, chemical plating alternative blackening agent
