What should be paid attention to when using stainless steel products

1. When stainless steel products are in use, if their surface is stained with some cement lime or other dirt, they should be cleaned up in time. If they are not handled properly, after a long time, the dirt will easily cause this phenomenon such as mildew or rust. For stainless steel, if this appears rusty or moldy, it is more difficult to deal. 2. The water quality of each place is different. For places with high iron content in water quality, when using stainless steel products, it is necessary to pay attention to the above water stain. After a long time, it will be attached to the surface. After a long time, it will become scale, and it will be difficult to clean it up.

What can be used to make tableware stainless steel

Although the material of stainless steel has many advantages, in fact, not all stainless steel can be used to make tableware. Stainless steel is also divided into many different types. Each type of stainless steel has its different functions, especially for making tableware. Stainless steel has strict requirements and regulations. After making tableware, stainless steel will directly contact with food. If it does not meet the standards, then I am likely to endanger our health. Therefore, our country has strict regulations on food and stainless steel that directly contact with food. At present, only stainless steel that meets the national mandatory standard GB4806.9-2016 "National Food Safety Standard Food Contact Metal Materials and Products" can be called food-grade stainless steel. In this standard, arsenic, cadmium, lead, chromium, and nickel in stainless steel products The upper limit of the migration of five heavy metals under specific measurement methods is restricted. We are more familiar with 304 stainless steel, even if it is a kind of food grade stainless steel, can be used to make ordinary prescription loose, in addition to this there are 316 stainless steel, 316 the nickel content of stainless steel is higher than 304, so the corrosion resistance is better and stronger, and other elements are added in the production process, so this 316 stainless steel is mainly used in the food industry or surgical equipment. When we buy stainless steel tableware or other kitchen utensils, we must see whether the above marked 304 or 316, other types of stainless steel must not buy, especially inferior stainless steel, it is likely to contain some heavy metal elements, there is also a great harm to our health.

What is food grade stainless steel?

Food-grade stainless steel refers to metal materials that comply with the GB4806.9-2016 provisions of the the People's Republic of China National Standard/Hygienic Standard for Stainless Steel Tableware Containers, and stainless steel will not dissolve various alloys and harmful substances in the process of using acid and alkali in food production. Specific standards Food grade stainless steel Various containers for storing food and food The processing machinery shall be austenitic or ferritic stainless steel (1 Cr18Ni9Ti,0 Cr19Ni9, 1 Cr18Ni9,1 Cr17Ni2). For the processing part of the abrasive drilling tool can also choose martensitic stainless steel (0Cr13,1Cr13,2Cr13,3Cr13). The specific physical and chemical indicators are as follows: Items Austenitic Stainless Steel Ferritic Martensitic Stainless Steel Lead (as Pb),mg/L 4% acetic acid immersion solution ≤ 1.0 1.0. Chromium (calculated as Cr),mg/L in 4% acetic acid soaking solution ≤ 0.5 Nickel (as Ni),mg/L 4% acetic acid immersion solution ≤ 3.0 1.0. Cadmium (Cd),mg/L 4% acetic acid solution ≤ 0.02 0.02. Arsenic (as),mg/L 4% acetic acid solution ≤ 0.04 0.04. Note: The soaking conditions are boiling for 30min and then 24h at room temperature.

The harm of inferior stainless steel to human body

If stainless steel tableware or kitchenware contains excessive nickel, it is likely to cause damage to the human skin, and even cause respiratory diseases, which are prone to edema or bleeding. If stainless steel contains excessive chromium, then this element accumulates too much in the human body, it will cause diarrhea and abdominal discomfort, and may cause allergic dermatitis or eczema. If there is excessive lead in stainless steel, the harm will be even greater. In severe cases of lead poisoning, many organs in the human body will cause irreversible damage.

What can be used to make tableware stainless steel

Although the material of stainless steel has many advantages, in fact, not all stainless steel can be used to make tableware. Stainless steel is also divided into many different types. Each type of stainless steel has its different functions, especially for making tableware. Stainless steel has strict requirements and regulations. After making tableware, stainless steel will directly contact with food. If it does not meet the standards, then I am likely to endanger our health. Therefore, our country has strict regulations on food and stainless steel that directly contact with food. At present, only stainless steel that meets the national mandatory standard GB4806.9-2016 "National Food Safety Standard Food Contact Metal Materials and Products" can be called food-grade stainless steel. In this standard, arsenic, cadmium, lead, chromium, and nickel in stainless steel products The upper limit of the migration of five heavy metals under specific measurement methods is restricted. We are more familiar with 304 stainless steel, even if it is a kind of food grade stainless steel, can be used to make ordinary prescription loose, in addition to this there are 316 stainless steel, 316 the nickel content of stainless steel is higher than 304, so the corrosion resistance is better and stronger, and other elements are added in the production process, so this 316 stainless steel is mainly used in the food industry or surgical equipment. When we buy stainless steel tableware or other kitchen utensils, we must see whether the above marked 304 or 316, other types of stainless steel must not buy, especially inferior stainless steel, it is likely to contain some heavy metal elements, there is also a great harm to our health.

There are several models of stainless steel

Stainless steel is used more than one kind of material, this material in order to meet the needs of people, the model is also there are many kinds. The following small series will introduce several models of stainless steel. There are several models of stainless steel More commonly used models are 301, 304, 306, 309S, 310S and so on. Stainless steel can also be called stainless acid-resistant steel. This material has the brightness of a mirror. When people touch it, they will feel tough and cold. It is a relatively avant-garde material. It has the advantages of corrosion resistance, formability, strength and toughness. It is suitable for use in heavy industry and daily necessities industry.

What are the reasons for stainless steel rust

1, stainless steel this surface is also with other metal substances, it can be said that this is also easy to make electrochemical corrosion, it will cause rust. 2. Stainless steel also has stains, such as fruit juice. It can be said that these will also cause organic acids under the action of water and oxygen, so after too long, rust will appear. 3. The surface of stainless steel will also have some acid, salt and other stains, which will cause local corrosion and rust of stainless steel. Summary: There are several models of stainless steel that are introduced here. The more commonly used models are 301, 304, 306, 309S, 310S, etc. The choice can be made according to your own needs.

Stainless steel pot how to maintain?

Stainless steel mechanical strength and chemical stability are very strong, stainless steel pot almost no special maintenance. If you want to maintain, only 3 suggestions are provided: 1. Avoid touching; 2. Clean in time after use to avoid local corrosion caused by long-term corruption of food residues (more important); 3. For composite bottom stainless steel pots, it is necessary to prevent large firepower from drying for a long time. Dry burning will cause several layers of composite bottom to peel off, which will seriously affect heat conduction (very important).