• Product Name：Stainless steel pickling passivation solution (HC-320)
• Add Time：2022-05-31 16:55:09
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• Tel：0550-7093728
  Email：web@chemhc.cn
  

English name: Passivation solution of stainless steel

Alias: stainless steel pickling passivation liquid pickling passivation liquid stainless steel purification liquid purification liquid

Features and uses

      Passivation: After the metal is treated with an oxidizing medium, the corrosion rate is significantly lower than that before the original treatment, which is called the purification of the metal. The passivation mechanism is mainly explained by the film theory, that is, it is believed that passivation is due to the action of the metal and the oxidizing medium, and a very thin, dense, and good covering performance is formed on the metal surface during the action, and can be firmly attached to the metal. Passivation film on the surface. This film exists as a separate phase, usually a compound of oxygen and metal. It plays the role of completely separating the metal from the corrosive medium, preventing the direct contact between the metal and the corrosive medium, so that the metal basically stops dissolving and forms a passive state to prevent corrosion.

Scope of application

       This product is mainly suitable for small and medium-sized stainless steel workpieces with large batches, large output and convenient soaking (recommended to use when the workpiece volume is less than 3 cubic meters or less, and more than 3 cubic meters or small batches, it is recommended to use stainless steel passivation paste, the effect is equivalent) such as Screws, small furniture, food machinery, digital electrical parts, hardware parts, etc.

product instructions

       1. Soak in passivation solution and use the original solution. The recommended soaking time is 5-60 minutes. If the oxide layer is thick and there is a lot of dirt, the time should be appropriately extended. It is recommended that it be 10-20 minutes in summer and 30-50 minutes in winter. (When the new potion is just used, the passivation time should not be too long, and a shorter time should be used.) Users can control the time according to the degree of color they need. When used at room temperature, the color of the liquid will gradually change from colorless to green, which is a normal reaction.

       2. With the increase of passivation times, the effectiveness of the passivation solution will gradually weaken. At this time, new potions can be added to it or the passivation time can be slightly extended accordingly (the specific time can be grasped from the surface color and cleanliness of the workpiece) , If the passivation time is extended for more than 1 hour, it is recommended to update a new liquid medicine.

       3. The pH value should be controlled within 2. When it is greater than 2, new liquid should be replenished in time. The waste liquid is used to remove slag and floating matter, and then add new liquid to adjust the pH value to 2 and continue to use.

       4. This product is used in stock solution at room temperature. Considering the climatic characteristics of northern my country, the temperature should be kept greater than 15 degrees Celsius when used in winter.

       5. The cleaning can not be washed with well water, and the surface of the workpiece should be washed with tap water without residue.

Storage and Packaging

       1. When storing, loading and unloading of this product, refer to SH/TO164. The higher temperature should not exceed 75 degrees Celsius, and if stored for a long time, the higher temperature should not exceed 45 degrees Celsius. This product does not burn, does not explode, and is weakly corrosive.

       2, 25kg/drum and 200kg plastic drum, transported as general chemicals.

       3, the shelf life is three years.