This 60℃-80℃ phosphating agent is a medium-temperature and low-slag zinc phosphating liquid with an improved formula. This product has lower oil removal requirements than traditional zinc-based phosphate-free phosphating liquids. Generally, even if there is a slight oil removal on the surface of cold-rolled or hot-rolled plates, it will not affect the coating.
The technical problem that this 60℃-80℃ phosphating agent can solve is to provide an improved medium-temperature and low-slag zinc-based phosphating liquid in view of the technical problem that the existing medium-temperature zinc-based phosphating liquid will produce a large amount of phosphorus slag during the phosphating process.
Generally phosphate conversion coating is used to provide long lasting corrosion protection. Almost all automotive industries use this type of conversion coating. It is suitable for the products come against hard weather conditions. It forms 2 - 5 gr/m coating on the metal surface when used as under paint.
This 60℃-80℃ phosphating agent can be applied by immersion or spray.
This 60℃-80℃ phosphating agent compounds like nickel and manganese are added to the bath to increase the coating performance. Also activation can be used to form small phosphate crystals on the metal surface before phosphating.
This 60℃-80℃ phosphating agent phosphate reaction happens in amorphous shape with gray - black color.
pH optimizers are added to accelerate the reaction. Temperature, application time, concentration, pH, total acid and free acid values are the parameters which must be under control, phosphates, coating range between 7 - 15 gr/m, are used in wire drawing, tube drawing and cold forming industries. Phosphated metal workpieces are prepared to the next stage by application of protective lubricans and soap
Supplementation of phosphating solution: According to the point of total acidity, add 3-4 liters of this product for every 1000 liters of working fluid, which can increase the total acidity by about 1 point. Maintenance of tank fluid: The sediment should be properly removed every month according to the workload. It is necessary to make up for it frequently and add less to improve product performance.
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