stainless steel sheets wire mesh

Stainless steel wire mesh stainless steel has good corrosion resistance , high temperature oxidation resistance , good low temperature performance and excellent mechanical properties. It is widely used for acid and alkali conditions screening and filtering , chemical packing , qiyi stainless steel sheet metal and other industries. Its main purpose is to corrosion and rust . Corrosion-resistant stainless steel mesh rely mainly on surface passivation film , if the film is incomplete or defective , stainless steel will corrode. Typically pickling passivation engineering , the corrosion potential of stainless steel to play larger. Bring surface oil , rust, dirt nonmetallic , low melting point metal contaminants , paints , welding slag forming , assembly , welding, weld inspection , such as testing , magnetism stainless steel and construction markings process equipment and components in stainless steel and spatter , these substances affect the surface quality of the stainless steel equipment and components , destruction of the oxide film on the surface

stainless steel sheet 304 mesh shaker maintenance

In stainless steel mesh shaker maintenance methods should pay attention to the following points. First, stainless steel mesh surface contamination caused by washing with 10% nitric acid or abrasive detergents, can also be washed with a special wash drugs. Second, the surface of the 430 grade stainless steel mesh shaker rainbow pattern, is caused by excessive use of detergents or oil , wash with warm water and mild detergent to wash. Third, the surface of the stainless steel mesh and various acids attached bleach , rinse immediately with water and then ammonia solution or neutral carbonated soda water immersion, neutral detergent or washing with warm water . Fourth, grease, oil , oil pollution qiyi stainless steel supplier mesh surface , wipe clean with a soft cloth , after using a neutral detergent or ammonia solution or cleaning with special detergents. Fifth, we should promptly remove the dirt stainless steel mesh , stainless steel mesh deformation can not squeeze destroy the passive film . Scrub with warm water or organic solvents.

Vulnerable duplex 430 stainless steel sheets

Universality ( 1 ) applications and multi -faceted as good as austenitic stainless steel , such as its temperature must be controlled at 250 degrees Celsius.
( 2 ) its plasticity and toughness lower than the austenitic qiyi stainless steel sheet 304 , cold and hot forming process and performance ( 3 ) exists in the temperature brittle zone , the need for strict control of heat treatment and welding technology system to avoid harmful phase hurt performance.
Compared with the ferritic stainless steel , duplex stainless steel strengths are as follows :
( 1 ) better than the overall mechanical properties of ferritic stainless steel , especially plastic toughness , not like that kind of ferritic stainless steel brittle sensitive .
( 2 ) In addition to resistance to stress corrosion , the other is superior resistance to localized corrosion of ferritic stainless steels.
( 3 ) cold cold forming process performance and the performance is far superior to ferritic stainless steel .
( 4 ) is also far superior weldability of ferritic 430 stainless steel magnetic , the former general welding without preheating , without heat treatment after welding .
( 5 ) the scope of application than the ferritic stainless steel wide.

Application of stainless steel sheets will increase year by year

Stainless steel ratio in developed countries is generally used in industrial facilities to 15 % -20 % , the proportion of domestic applications small. This is partly due to the introduction of complete sets of industrial equipment , 430 stainless steel sheets materials are not statistics , on the other hand is not yet adopted by domestic materials . Chemical, petrochemical, chemical , paper, food, medicine , energy ( nuclear power, thermal power, fuel cells ) and other areas need to stainless steel. In addition , the existing equipment has been imported into the maintenance phase . With the development of improved quality of products made ​​of stainless steel and special grades of products, the domestic application of stainless steel industrial facilities will increase year by year in the future .
Slightly higher than the density of carbon ferritic and martensitic stainless steel, and slightly lower than the austenitic stainless steel ; resistivity by carbon steel, ferritic , martensitic and austenitic qiyi 304 stainless steel sheets sort ascending ; linear expansion Sort coefficient size is similar, austenitic stainless steel of the highest minimum ; steel, ferritic and martensitic stainless steel magnetic, austenitic stainless steel non-magnetic, but it generates a work hardening martensitic phase transformation when will generate magnetism , heat treatment method can be used to eliminate this martensite and restore its non-magnetic.

The overall composition of stainless steel

Bulk containers of stainless steel has been used as a cargo of bulk bag container for loading liquefied natural gas (LNG), chemicals, stainless steel suppliers and so on. LNG cargo containers in the habit of using Sheng 304L stainless steel, its purpose is not to take into account corrosion but mechanical properties at low temperature state . Shipping containers for chemicals , stainless steel main purpose is to take into account its resistance to corrosion, chemicals and land which storage is different. If the vessels are generally occasional freighter , the container carrying chemicals can transport anything from acetic acid , bad pulp to xylene. 304 stainless steel sheets  is generally used for valves, cargo pumps, pipes were , heating coil and the container itself . Containers can be made ​​from the whole of stainless steel or carbon steel cladding layer of 0.06 ~ 0.08in (1.5-2.0mm) stainless steel plate . Before use, the sheet must be careful to check whether there are defects and a thorough cleaning and passivation.

stainless steel 304 sheet industrial pipes

Water contamination in its storage and transportation problems has been growing attention. Practice has proved that a large , qiyi 304 stainless steel coil water preparation, storage, transportation , purification , recycling, desalination and other water industry 's best selection . Its advantages are: corrosion resistance, earthquake , water , sanitation ( no rust and patina ) , light weight ( to reduce 1 / 3 ) , less maintenance , long life ( can use 40 years), life cycle cost (LCC) Low , is a recyclable green materials . According to reports, Tokyo, Japan region reached 76% of stainless steel pipes , pipe leakage rate from the current 14.7 % to 7.5 %. After Osaka, Japan suffered a major earthquake , stainless steel water tanks intact. Recently, the stainless steel sheet coil bellows joints, so that the construction cost of the stainless steel water pipeline reduced by 20% , 3% of the total costs , maintenance costs are reduced by 3 /4.

International stainless steel sheets labeling method

American Iron and Steel Institute is three numbers to mark a variety of standard grade wrought qiyi stainless steel 430ba. Where:
① austenitic stainless steel with 200 and 300 series of numerals,
② ferritic and martensitic stainless steel 400 series is represented by numbers. For example, some of the more common austenitic stainless steel is marked 201,304,316 and 310,
③ ferritic stainless steel coil suppliers is marked 430 and 446, 410, 420 and 440C martensitic stainless steel is marked, duplex (austenitic - ferritic),
④ stainless steel, precipitation hardening stainless steel and high-alloy iron content of less than 50% usually uses proprietary name or trademark name.

High-chromium stainless steel sheet 304 first

Good heat resistance, corrosion resistance is weak , 11% Cr, 8% of Ni.
409 - the cheapest model ( BAR ) , commonly used as automobile exhaust pipe, is a ferritic qiyi stainless steel 304 sheet ( chrome steel ) .
( High-strength chrome steel ) , good wear resistance , corrosion resistance is poor .
Similar to Brandt 's first high-chromium stainless steel this . Also used in surgical tools , can do very bright .
Good formability , but heat resistance and corrosion resistance worse .
Carbon is slightly higher , after appropriate heat treatment to obtain a higher yield strength and hardness up to 58HRC, are among the most hard stainless steel sheet 304 . The most common application example is the " razor blades ." ( Easy processing ) .

stainless steel sheets Corrosion

Experience has shown that the degree of corrosion of the atmosphere varies from region to region . For ease of explanation , qiyi 409 stainless steel plate to be divided into four areas , namely: rural, urban , industrial areas and coastal areas.
Country is essentially pollution-free zone. Low population density of the area , only non-polluting industries.
Typical urban residential, commercial and light industrial areas , the region has a mild contamination , such as traffic pollution.
Industrial area of air pollution caused by heavy industry area . Contamination may be other gases formed in the gas fuel , such as sulfur and nitrogen oxides, or the release of chemical or processing plant . Particles suspended in air travel , as the deposition of dust or iron oxide generated 430 stainless steel sheets roduction also cause corrosion increases.