The dual phase in the name of duplex stainless steel mainly comes from the microstructure of the alloy. Duplex stainless steel will usually contain about 50/50 mixture of austenite phase and delta ferrite phase. Compared with austenitic stainless steel (such as 304 or 316 stainless steel), duplex stainless steel has better corrosion resistance, especially chloride stress corrosion and chloride pitting corrosion, and higher strength.

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904L is a super austenitic stainless steel with low carbon and high nickel and molybdenum. It has very good activation and passivation transformation capabilities, and excellent corrosion resistance. It has excellent performance in non-oxidizing acids such as sulfuric acid, acetic acid, formic acid, and phosphoric acid.

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The purpose of heating stainless steel plate is mainly to increase the plasticity of stainless steel, make the internal and external temperature of the billet tend to be uniform, and improve the metallographic structure of the material. In addition, the quality of the heating treatment will directly affect the output, quality and service life of the production equipment.

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After the production and processing of stainless steel plates is completed, the acceptance steps are indispensable. Usually there are corresponding quality standards for acceptance. This quality standard includes two types of product common standards and special standards. First check whether the common standards meet the requirements, and then check whether the special standards meet the standards on the basis of their compliance.

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Common types of continuous annealing furnaces for stainless steel strips include horizontal and vertical types. Because the indirect heating of vertical annealing furnaces has corresponding advantages in strip surface quality control, it has developed rapidly in recent years, while horizontal continuous annealing furnaces The tension in the furnace is smaller than that of the vertical furnace, which is more suitable for the production of stainless steel, so it has been adopted by many stainless steel factories.

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Because the cutting performance of stainless steel itself is poor, it is more dependent on the cutting fluid to provide cooling, lubrication and cleaning characteristics, and the quality requirements for the cutting fluid are relatively high.

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At present, the production of stainless steel plates is basically cast by continuous casting machines. The thickness of the slab is about 140-200mm, and the width is about 900-1600mm. According to the use of the stainless steel plate to be produced, the slab can be cut Into the length ranging from 5-12m.

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The removal of iron scale on the surface of hot-rolled stainless steel strip is usually a combination of mechanical and chemical methods. Mechanical methods mainly include shot blasting, scale breaking and steel brush cleaning. Because the surface cracks are all inside the iron scale layer, these are relatively easy to remove.

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While there are thousands of different alloys of stainless steel, they can all be divided into five categories:

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What is the difference between stainless steel 1Cr18Ni9Ti and 0Cr18Ni9? In fact, stainless steel 1Cr18Ni9Ti is what we often call 321 stainless steel, and 0Cr18Ni9 is what we often call 304 stainless steel. So what is the difference between the two?

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202 stainless steel 304 which one is better? In fact, there is no standard answer to this question. We can only say which one is more suitable for you, 202 stainless steel and 304 stainless steel. This article will teach you how to distinguish 202 stainless steel and 304 stainless steel from the composition of stainless steel and the difference between the two.

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After the stainless steel plate is stretched and formed, its surface will appear rough, which is called the orange peel phenomenon. As the name suggests, the surface has textures like orange peel, and it becomes rough to the touch. Obviously, this is very different from the smooth surface of our common stainless steel plates.

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The following precautions should be understood when using stainless steel plates: 1. When using stainless steel plates, if there are welding shavings, cement, oil stains, white ash, putty, sand ash, etc. attached to the surface of the product, it should be cleaned in time, otherwise it will cause rust or mildew after a certain period of time.

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Steel is obtained by properly mixing carbon into iron. In the iron and steel industry, those with a carbon content of less than 2.11% are called steel, and those with a carbon content greater than 2.11% are called iron. Stainless steel is also called alloy steel. Cobalt, Chromium, nickel, tungsten, titanium and other metals.

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Stainless steel will also rust under certain conditions. Stainless steel has the ability to resist atmospheric oxidation -- that is, rust resistance, and also has the ability to resist corrosion in media containing acids, alkalis, and salts -- that is, corrosion resistance However, the size of its anti-corrosion ability is changed with the chemical composition of the steel itself, the state of interaction, the use conditions and the type of environmental media.

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