What to clean stainless steel welds and how to deal with stainless steel welds

There are two methods, one is to use passivation paste, which is specially used to clean short stainless steel welds, which only need to be applied to the weld for 20 minutes and wiped off; The other is for more welds, first put the workpiece into the mixture of nitric acid and hydrofluoric acid to soak and clean for 15 minutes, take it out and rinse it with water, and then put it into nitric acid to passivate for 20 minutes, take it out and rinse it clean.

Stainless steel welds have a new way to clean, we used to use manual grinding, groove and groove seam grinding can not be polished, and then bought worldtek weld laser cleaning, which can be called an artifact, quickly and effectively remove the welding rust, and can also do pre-welding treatment.

Three words: Sibanjing is commonly known as pickling cream.

Stainless steel weld cleaning machine, solve the welding discoloration, one brush will be white.

Hello! The method steps are as follows: 1. The surface of stainless steel after welding needs to be treated, which can be directly cleaned, or can be treated with anti-oxidation, and then polished, so that it can not only meet the aesthetics, but also achieve corrosion resistance in the later stage. Especially in the process of welding, some welding scars or welds will be generated, and the weld scars can be removed by grinding and polishing.

2. Especially for some high strength requirements, it is first necessary to spray directly on the surface through the pickling process, and then through passivation. Or by sandblasting, using glass or ceramic particles, spraying and then polishing. 3. After the polishing is completed, in order to increase its corrosion resistance, electrolytic polishing is carried out through chemical methods, so that a layer of electroplating layer can be formed on the surface, which can increase its corrosion resistance, and it is not easy to corrode in the later stage, which delays the service life.

Surface treatment method after stainless steel welding: After stainless steel welding, it should be treated, such as cleaning, protection, anti-oxidation, grinding and polishing, wire drawing, etc. Here's how:

1. The weld must be pickled and passivated to remove the oxide scale on the weld, so that it can regenerate an oxide film and play a role in corrosion resistance. 2.There are two pickling methods, dipping method and brushing method, dipping method is suitable for small objects, can be directly put into the acid, for large objects, such as pipes, etc. can not be immersed in the container, so be sure to use the brushing method, that is, keep brushing until the formation of white bright color, and then rinse it off with water.

3.After the pickling is completed, there will be a passivation treatment, which is to apply the passivation solution on the surface of the object, then rinse it with cold water, scrub it again and then rinse it with warm water.

Hello, stainless steel rust removal paste is the first choice for pickling stainless steel welds, and it is not recommended to use the cleaning soaked in the pickling bath liquid. Because if the weld is soaked in the pickling solution, there will be a large amount of residue trapped in the gap, even if it is washed and neutralized with water, it will not be clean. Stainless steel rust paste is short, fast, thorough removal, can be used vertically, not sagging, suitable for a variety of materials of stainless steel rust and weld spot removal, but also will not remain in the weld, after the treatment of stainless steel surface is silver-white primary color.

Hope it helps!

Summary. The effect of laser cleaning after stainless steel weld treatment can clearly see the difference between before and after cleaning, and the surface is as smooth as new after laser cleaning, returning to the original color of the substrate.

Laser cleaning can be used to clean the oxide layer on the surface before stainless steel welding, and can also strengthen the adhesive strength of the weld, making the weld more perfect. After welding, there will be black and yellow dirt on both sides of the weld surface and dust loss, and the use of laser cleaning can directly clean off this colored dirt and restore the slag to the original color of the substrate.

After the stainless steel weld is treated with the effect of laser cleaning, you can clearly see the difference between the key before cleaning and after cleaning, the surface is smooth and clean after laser cleaning, and the silver returns to the original color of the substrate.

Black stains are oxides produced by high temperatures and can be cleaned using the following methods:

1. Polishing once with fine sand thousand blades, then throwing wax with a cloth wheel, and then slowly grinding with a grinder.

2. Wipe with 15% acetic acid solution, soak the black part in acetic acid solution, and rinse it with water after a few hours.

3. Wet the black part of the weld with 10% citric acid solution, then soak it in concentrated salt water, and clean it the next day.

4. Use hydrofluoric acid for cleaning, and finally clean the residual liquid.