Composite bottom stainless steel steamer pot pot bottom corroded by edible salt can still continue to use?

The safety of stainless steel utensils is mainly the migration of heavy metals, and stainless steel in the iron, chromium, nickel, manganese, trace amounts of beneficial to the human body, the excess is each a cold killer of human health. Compared with the lack of these partially polluting elements in the body of the excess may be more worrying than the lack,? Because the elements are easy to compensate for if they are simply deficient,? whereas excesses can be difficult to remove,? or the removal process can have side effects.

The weight ratio of chromium in the material reaches 12.5% or more in order to be called stainless steel, chromium content of 18%, nickel content of 8% stainless steel in order to have edible stainless steel utensils need to have the ability to resist corrosion and rust. According to this standard, manganese content is naturally less than 2%. In this content ratio, stainless steel is not easy to rust, chromium, nickel, manganese precipitation are not harmful to human health. But if manganese to replace nickel, will lead to stainless steel surface chromium oxidation protective film is very easy to be destroyed, chromium, manganese, nickel and other metals are easy to excessive precipitation. Therefore, the key to the current boiling stainless steel pot safety debate, lies in the product itself is too low chromium and nickel content, too high manganese content. Chromium nickel manganese are not the less the less likely to precipitate, but the higher the stability of the more difficult to precipitate, substandard stainless steel products, not only the potential hazards of manganese escape, nickel and chromium over-release hazards may be more dangerous. Therefore, to meet the standard dosage is the basic premise of safe use.

The cost of raw materials in the cost of stainless steel accounted for 70-80%, therefore, nickel, chromium raw material prices directly affect the cost of production. Merchants in order to reduce costs, the use of some grades of the so-called stainless steel? Its nickel content is even only ?1% or so, because consumers are wrong to think that there is no magnetic stainless steel is stainless steel, manufacturers in order to achieve this non-magnetic properties and then reduce the chromium content, so that the stainless steel corrosion resistance is worse, more prone to rust. Between the addition of chromium and nickel, manganese and other metals, it is easy to migrate from the edible utensils, contamination of our food, in the silent place between the jeopardy of our health. Especially in the high temperature of cooking, coupled with the acidic qualities of the ingredients, washing the alkaline conditions, but also migrate smoothly.

Manufacturers can claim that their pots do not exceed the amount of heavy metal precipitated in the heavy metal migration test, but it is not difficult to imagine that the pots sent for testing by manufacturers must be new pots. Our laboratory with the national standard 4% acetic acid solution immersion, inductively coupled plasma mass spectrometry detection of stainless steel kitchen utensils in the migration of various metals, found that the migration of the old pots and pans to the new pots and pans of dozens of times. Experiments show that even if the stainless steel material content is greatly discounted substandard utensils, in the just purchased when the test migration is mostly in line with the standard, but with the use of time, the migration continues to multiply, brand-name products such as, of course, those who shouted at a loss to sell a number of ten dollars of stainless steel utensils since not to mention. Na?ve stainless steel products to resist the erosion of the years is quite tenacious and trustworthy. Manufacturers pursue profits to reduce costs is not wrong, but the products manufactured in the process of consumer use can not be released on the health of toxic and harmful substances, which can not be overstepped the bottom line.

Because Julia Roberts starred in the movie "Never Compromise", the danger of chromium has been y rooted in people's hearts, once the hustle and bustle of the harm of leather milk also lies in the chromium, will not repeat here.

No cases of dietary nickel deficiency due to normal diet have been found, so nickel does not require additional supplementation, what we need is to be wary of excessive nickel intake. Nickel on the human body to produce allergic reactions and carcinogenic toxicity, has aroused the European and American medical community and the material community attaches great importance to banning the use of nickel-containing alloys to manufacture products in contact with the human body has become a trend of the climate, but as we mentioned earlier, in order to stainless steel, nickel stability, nickel must be added and also to reach a certain amount, so, following the nickel-free medical implantable materials after the nickel-free revolution, nickel-free plating widespread popularity, nickel-free stainless steel edible utensils will also be the inevitable orientation. But it should be emphasized that removing nickel and simply replacing it with manganese is a much worse choice.

While manganese is essential to the human body is an important trace of yuan soar, but too little, can also cause poisoning of the body. Of course,? As with other essential trace elements, ingestion from food alone is not enough to cause manganese poisoning. Chronic manganese toxicity is a progressive and irreversible pathology, which is now shifting from the clinical to the subclinical type and is very insidious. Manganese absorption in the digestive tract is very low, and in addition to guarding against escape from stainless steel utensils, it is more important to be alert to respiratory intake, which is the main intake channel. For example, methylcyclopentadienyl manganese tricarbonyl has been used in succession to replace tetraethyl lead as an antiknock agent for gasoline, is with the daily increase of automobile exhaust, so that manganese diffused into the environment at an unprecedented rate. Therefore, the new national standard of manganese release in stainless steel edible utensils, but such as is to be improved, and now some countries not only to test the manganese content, iron content is also included in the scope of migration testing.

Summary: completely stainless steel is just an advertising slogan, usually stainless steel in the sense of nothing more than resistance to weak corrosive media corrosion of steel, corrosion rate of less than 0.01mm per year is known as fully corrosion-resistant, the corrosion rate of less than 0.1mm is known as corrosion-resistant. Therefore, stainless steel is not unable to be corroded, only to be corroded at a slower rate. There is no need to myths about stainless steel, superstitious stainless steel, other safe traditional kitchenware, as well as exuding the charm of fashion.

When we buy stainless steel tableware, you can look at the top of the logo, of course, some stainless steel products are not, "13-0", "18-0", "18-8 "Three kinds of code, the number in front of the code indicates the chromium content, and the number behind it represents the nickel content, as mentioned before, 18-8 is better.

Don't use stainless steel cutlery to cook acidic food for a long time under high temperature, and don't use it to decoct Chinese medicine, don't use strong alkali or strong oxidizing chemicals to wash it, and the principle of rust-proof use of common iron products are applicable to stainless steel. Stainless steel can be completely recovered and recycled, so the rate of family renewal must exceed the corrosion rate of stainless steel pots and pans, especially the nickel-cadmium content does not meet the standards of the fake stainless steel pots and pans should be more careful, and when the time to change the new bar. Produced a substandard product manufacturers if you can return to the right path, the best crisis public relations is no better than the old for the new. Widely carried out, vigorously carried out, only recognize the pot, regardless of the invoice.?

Composite stainless steel pot cleaning:

Exposed in the corrosive environment of the metal surface all electrochemical reaction or chemical reaction, uniformly subject to corrosion. Cleaning the stainless steel surface must pay attention to the phenomenon of no surface scratches, avoid the use of bleaching ingredients as well as abrasive detergent solution, steel wire ball, grinding tools, etc., in order to get rid of the detergent solution, the end of the washing and then rinse the surface with clean water.?

Stainless steel surface with dust and easy to remove dirt, available soap, weak detergent or warm water washing. Stainless steel surface of the trademark, film, with warm water, weak detergent to wash, binder composition, use alcohol or organic solvents (ether, benzene) scrubbing.? Stainless steel surface grease, oil, lubricant pollution, wipe clean with a soft cloth, and later clean with neutral detergent or ammonia solution or with a special detergent.

Stainless steel surface with bleach as well as a variety of acid attached, immediately rinse with water, and then ammonia solution or neutral soda carbonate aqueous solution immersion, with neutral detergent or warm water washing.?

Stainless steel surface with rainbow pattern, is too much use of detergent or oil caused by washing with warm water neutral detergent can be washed away. Stainless steel surface dirt caused by rust, available 10% nitric acid or abrasive detergent washing, can also be used to specialize in washing drugs.

Tips:

Mirror stainless steel in the last resort, it is best not to use medicine to clean,. In the good all-purpose cleaner also do not use.?

As long as the chemicals are generally stainless steel products will have a certain impact, stainless steel and marble, even if the same batch of products will appear different materials and chemical composition of the different. Such as cleaning mirror stainless steel with potion sometimes due to material problems and make stainless steel oxidation reaction and make the surface black.