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The essence of the controlled rolling and controlled cooling process of AH36 Steel is to combine deformation and heat treatment. Its main purpose is to refine the grains, obtain the desired structure, and improve the mechanical properties of the material. AH36 Steel was once the driving force behind the development of controlled rolling technology. It was the first to adopt the miniaturization method "normalizing treatment method" to produce high-grade thick AH36 Steel. Later, the micro-alloying and controlled rolling process was gradually adopted, so that the produced AH36 Steel had excellent comprehensive mechanical properties and met the needs of AH36 Steel development.
The controlled rolling process is to control the process parameters in the hot rolling process of AH36 Steel, the main parameters of which are heating temperature, deformation amount and deformation temperature, combined with the precipitation of carbonitrides of microalloying elements Nb, V, Ti and other elements, increasing the austenitic the nucleation site of the transformation from solid to ferrite, so as to refine AH36 Steel after phase transformation, and achieve the purpose of improving strength, plasticity and toughness for AH36 Steel.
Controlled rolling of AH36 Steel is generally divided into three stages: controlled rolling in austenite recrystallization region, controlled rolling in austenite non-recrystallized region, and controlled rolling in austenite and ferrite two-phase region.
GB T 5312 Carbon and carbon-manganese steel seamless steel tubes and pipes are mainly for ship use, also known as shipbuilding steel pipes. Under GB T 5312, there are mainly 5 steel grades: grade 320, 360, 410, 460 and 490. Each grade covers three levels: I, II, III.
Angle steel, commonly known as angle iron, is a long strip of steel whose sides are perpendicular to each other. There are equal angle steels and unequal angle steels. The two sides of equal angle steel are equal in width. The unequal angle steel is also known as L shape profile steel.
Flat bar steel can be produced according to the user's needs, with fixed thickness, width and length. It can reduce the cutting process for users, reduce the consumption of labor and materials, and also reduce the processing loss of raw materials.
Bulb flat steel for shipbuilding
The bulb flat steel is a kind of medium section material which is mainly used in the field of shipbuilding and bridge building, and the shipbuilding bulb flat steel is an auxiliary medium section material for shipbuilding.
The steel for shipbuilding and oil platform---FH40, is the high tensile strength steel.The shipbuilding steel FH40 is the Hull structural steel.We can provide FH40 shipbuilding steel plate price.
The steel for shipbuilding and oil platform---EH40, is the high tensile strength steel.The shipbuilding steel EH40 is the Hull structural steel.We can provide EH40 shipbuilding steel plate price.
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BBN SHIP STEEL FACTORY
