Product category of passivation paste

Passivation paste for pickling stainless steel over 300 series

Alias: stainless steel pickling passivation paste, stainless steel pickling passivation paste, stainless steel passivation paste, pickling passivation paste, passivation paste, pickling passivation paste, stainless steel cleaning passivation paste, cleaning paste, cleaning passivation paste.

Applicable occasions (features):

It is required that the solder joint, scale and rust on the stainless steel surface be removed, and the corrosion-resistant passivation treatment can be completed in one step;

Comprehensive cleaning and passivation process of stainless steel equipment, pressure vessels and engineering components in chemical, pharmaceutical, paper, food, aviation, nuclear industry, construction and other industries;

Harmful ions, such as chloride ions, are not needed to protect the stainless steel surface and the complete intergranular structure;

After cleaning, it is necessary to improve the salt spray resistance of stainless steel and prolong the service life of the equipment.

Usage: Apply the original pulp for 20-30 minutes.

Reference flow: This paste is washed-washed-neutralized-washed-dried.

Product advantages:

1. Stainless steel pickling passivation paste is easy to use and can be evenly applied by brushing;

2. One kilogram of this product can handle 3-4 square meters;

Performance characteristics: This product is used for pickling and passivation of welding joints and surfaces of large stainless steel workpieces to remove oxygen generated after welding and high temperature processing.

Peeling makes it bright as silver, and an oxide film with nickel and chromium as the main substances is formed on the treated surface, which will not cause secondary oxygen corrosion and achieve the purpose of passivation, thus improving the surface anticorrosion quality of stainless steel products and prolonging the service life of equipment. This product completes degreasing, pickling and passivation in one step, which changes the traditional degreasing, pickling and passivation processes and has the advantages of simple operation, convenient construction and low cost. The use of this product does not require special equipment and venues, heating equipment and power supply, and skilled operators, saving time, effort and energy. This product is a stable paste, easy to transport, can be stored for a long time, and is very convenient to take at any time. When a small amount of precipitate is used, it can be used by stirring evenly without affecting the use effect. Applicable materials:

1. Suitable for 300 series stainless steel (304, 3 16, 3 16L, 32 1, etc. ).

Main uses: It can effectively improve the corrosion resistance of stainless steel and prolong the service life of workpieces. It is widely used for surface treatment of stainless steel equipment, pressure vessels and engineering components in chemical, pharmaceutical, papermaking, food, machinery manufacturing, construction and other industries. Usage and recommended technology:

1. According to the processing situation of the workpiece, grease should be removed first, and wax should be removed for the workpiece polished mechanically to ensure the absolute cleanliness of the surface.

2. Apply the passivation paste on the stainless steel surface with a brush for more than 20 minutes until a light green color appears, indicating that passivation is over.

3. Rinse the passivation paste on the surface of the workpiece with clear water.

4. Finally, soak in clean water (purified water or filtered water) with chloride ion content less than 25PPM for washing 1-3min.

5. dry.

6. Concentrate the wastewater, add alkaline lime water or sodium hydroxide for neutralization, and discharge it when the PH value is close to 7, which has no impact on the environment.

Precautions:

1, this product is corrosive. If it spills into eyes and mouth, rinse it with clear water immediately;

2, don't let the children contact, don't eat;

3, sealed in a cool place, shelf life of 3 years.

Typical process:

1, degreasing-cleaning-pickling passivation-rinsing-drying

Effect after treatment:

1. It can keep the original color of the workpiece after machining, and improve the surface quality without changing the size of the workpiece.

2. Improve the corrosion resistance of stainless steel, the breakdown potential of the passive film can be improved by several hundred millivolts compared with that of untreated stainless steel, and it can pass the "blue spot method" test specified by the state, and there is no blue spot for 30 seconds.

Packaging:

The package of this product series is 25Kg, (1kg/ bottle, 24 bottles/box).