How can the newly bought stainless steel thermos cup have a layer of black things when wiped?

This "black thing" is called polishing wax and needs to be cleaned after purchase. The edges of those stainless steel dishes, wiped with a paper towel, will have black marks. Because the newly bought dishes are used after washing, the way to clean in supermarkets is to use dish soap.

Cleaning can be cleaned.

How to clean the stainless steel thermos cup for the first time.

You can use rice washing water.

The role of adsorbing dirt to clean the stainless steel thermos cup you just bought, the following are the specific steps:

Tools needed: Baking soda.

Rice. 1. First, pour a handful of rice into a stainless steel thermos cup.

2. Pour in an appropriate amount of baking soda to increase the decontamination ability.

3. Pour water into the cup.

4. After screwing the cap, shake it vigorously for a while.

5. Open the cup and pour out all the contents.

6. Rinse the cup with water several times.

7. In this way, the inside of the stainless steel thermos cup just bought back is brighter and cleaner, and it can be used, and the effect is good.

1. It may be that the quality of the mechanical oil used in the production process is poor, and the general washing cannot be removed, so the hand will be black and greasy after holding it by hand. Method: Add a little more detergent to the water, boil for 5 minutes, and then rinse.

2. It is possible that there will be a layer of polished metal particles on the surface of stainless steel products. You can wash it with dish soap or detergent before use, and then use it so that your hands will not turn black.

3 may be wax, stainless steel by waxing and polishing to increase its brightness, it is recommended to wipe it with a cotton cloth, and it is no problem to brush it with hot water.

Wash the newly bought stainless steel basin rubbed a hand black, the quality of this stainless steel is not inconsistent.

It is not a problem of stainless steel quality, the stainless steel basin needs to be polished by manual mechanical grinding from a flat plate to stretching and forming.

If there is something black in the stainless steel thermos cup, or after holding it with your hands, your hands will be a little black, which means that your stainless steel material is relatively poor, not real stainless steel, but stainless iron.

If this happens to the newly bought thermos cup, it is very likely that the quality of the cup is very poor, not made of real high-quality stainless steel materials, but of inferior alloy materials.

Newly bought stainless steel thermos cup, how can there be a layer of black things when you wipe it. I think that the newly bought thermos cup must have a layer of iron filings on the surface, so the newly bought thermos cup must be cleaned before it can be used.

If the material is not good, it will get darker and darker, and it is best to choose a brand of thermos cup! The top three in the ranking can basically guarantee non-toxic materials!

If there are black spots in the thermos cup, it is estimated that it is a scratch if it can't be washed off, which is just a flaw. Stainless steel scratches, and in the frosted walls, the scratches will be smoother than the surrounding ones, and there will be a mirror effect, as if you look at the smooth stainless steel sideways is black.

This is the quality of the thermos cup, you can contact the seller to ask for a return, if the seller does not return, you can complain to the Industrial and Commercial Bureau, if it is a metal liner thermos cup, the small black spot may be the appearance of rust spots, this situation is not recommended to continue to use, so as not to cause heavy metals in the water to exceed the standard.

Precautions for the use of thermos cups.

Before use, you can open the package, then blanch it several times with boiling water or detergent, sterilize it at high temperature, and do not hold carbonated drinks such as milk, dairy products and juices for a long time.

When washing, it can be cleaned with a soft cloth and detergent diluted with warm water, and alkaline bleach cannot be used.

In addition, in order to prevent odors or stains, please wash and dry them fully after use, these are common ways to use thermos cups, and you should pay more attention to do better.

1. Normal phenomenon.

It is normal for general stainless steel products to have a certain amount of oil stain on the wall of the cup due to grinding, rust prevention and other reasons, so it should be cleaned and soaked before use.

2. Ferric oxide.

There is also a situation where ferric oxide is present, and it does not matter if it enters the body, there is no need to worry.

3. Unqualified stainless steel products are used.

There is also a situation where unqualified stainless steel products are used, and after high temperature, stainless steel will have dissolved metal ions absorbed into the blood, such as chromium, nickel and other substances, which is not good for the human body. Do not use substandard stainless steel products.

The reason for the blackening of the surface of stainless steel is the result of thermal oxidation of stainless steel, and it can be used to wipe it clean.

The best tool for cleaning stainless steel is a rag and stainless steel oil, just pour the stainless steel oil on the rag and then wipe it on the stainless steel object until all the transformation parts are removed.

Related Notes:1.Made of stainless steel, it is sturdy, unbreakable, durable, and beautiful.

2.It can be used for a long time, and it can be used for a lifetime if you cherish it.

3.Origin: It was only used in modern times, but it quickly became popular.

4.Variety of shapes.

Defective stainless steel cups also have quite a few defects. If it cannot be used to contain traditional Chinese medicine, it will be harmful to the human body.

Most of the stainless steel is stainless steel.

Use a cloth dipped in water to stick some edible alkali and rub it.

What should I do if I put salt in the stainless steel thermos cup and there are black spots?

Hello dear, thank you for waiting, let me explain to you, 1. Black spots appear after soaking in salt water for a day, indicating that the surface of stainless steel has been slightly corroded. The better quality stainless steel has a higher nickel content and strong anti-corrosion ability, so the burning ridge will not easily appear black spots. Your material is probably stainless iron!

2. It is best not to clean the black spots without chemical solutions, because improper use is likely to cause greater corrosion! The appearance of dark spots is simply aesthetically pleasing. If you regret that if you use iron wire scrubbing, it is likely to destroy the surface plating of metal materials, and it will rust faster!

3. It is completely usable to appear black. 4. The cleanest material is ceramic or glass. Thermos cups made of metal or plastic parts are always somewhat polluted.

I hope you can be satisfied, give a thumbs up and encouragement, thank you!